From 707a633de3b4f47cf00396e16adb7946fa127880 Mon Sep 17 00:00:00 2001 From: hathach Date: Mon, 7 Mar 2022 23:03:37 +0700 Subject: added dcd_sof_enable(), tud_sof_isr_set() make number of interface configurable (default to 8) CFG_TUD_INTERFACE_MAX --- src/device/dcd.h | 15 +++++++++++++++ src/device/usbd.c | 18 ++++++++++++++++-- src/device/usbd.h | 6 ++++++ 3 files changed, 37 insertions(+), 2 deletions(-) (limited to 'src/device') diff --git a/src/device/dcd.h b/src/device/dcd.h index 8efbc90ef..3eac6711f 100644 --- a/src/device/dcd.h +++ b/src/device/dcd.h @@ -77,6 +77,11 @@ typedef struct TU_ATTR_ALIGNED(4) tusb_speed_t speed; } bus_reset; + // SOF + struct { + uint32_t frame_count; + }sof; + // SETUP_RECEIVED tusb_control_request_t setup_received; @@ -132,6 +137,9 @@ void dcd_connect(uint8_t rhport) TU_ATTR_WEAK; // Disconnect by disabling internal pull-up resistor on D+/D- void dcd_disconnect(uint8_t rhport) TU_ATTR_WEAK; +// Enable/Disable Start-of-frame interrupt. Default is disabled +void dcd_sof_enable(uint8_t rhport, bool en); + //--------------------------------------------------------------------+ // Endpoint API //--------------------------------------------------------------------+ @@ -185,6 +193,13 @@ extern void dcd_event_setup_received(uint8_t rhport, uint8_t const * setup, bool // helper to send transfer complete event extern void dcd_event_xfer_complete (uint8_t rhport, uint8_t ep_addr, uint32_t xferred_bytes, uint8_t result, bool in_isr); +static inline void dcd_event_sof(uint8_t rhport, uint32_t frame_count, bool in_isr) +{ + dcd_event_t event = { .rhport = rhport, .event_id = DCD_EVENT_SOF }; + event.sof.frame_count = frame_count; + dcd_event_handler(&event, in_isr); +} + #ifdef __cplusplus } #endif diff --git a/src/device/usbd.c b/src/device/usbd.c index 7926689b7..8662d5b84 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -67,7 +67,7 @@ typedef struct volatile uint8_t cfg_num; // current active configuration (0x00 is not configured) uint8_t speed; - uint8_t itf2drv[16]; // map interface number to driver (0xff is invalid) + uint8_t itf2drv[CFG_TUD_INTERFACE_MAX]; // map interface number to driver (0xff is invalid) uint8_t ep2drv[CFG_TUD_ENDPPOINT_MAX][2]; // map endpoint to driver ( 0xff is invalid ) struct TU_ATTR_PACKED @@ -269,6 +269,8 @@ static inline usbd_class_driver_t const * get_driver(uint8_t drvid) // DCD Event //--------------------------------------------------------------------+ +static tud_sof_isr_t _sof_isr = NULL; + enum { RHPORT_INVALID = 0xFFu }; static uint8_t _usbd_rhport = RHPORT_INVALID; @@ -393,6 +395,12 @@ bool tud_connect(void) return true; } +void tud_sof_isr_set(tud_sof_isr_t sof_isr) +{ + _sof_isr = sof_isr; + dcd_sof_enable(_usbd_rhport, _sof_isr != NULL); +} + //--------------------------------------------------------------------+ // USBD Task //--------------------------------------------------------------------+ @@ -435,11 +443,13 @@ bool tud_init (uint8_t rhport) driver->init(); } + _usbd_rhport = rhport; + _sof_isr = NULL; + // Init device controller driver dcd_init(rhport); dcd_int_enable(rhport); - _usbd_rhport = rhport; return true; } @@ -1121,11 +1131,15 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr) break; case DCD_EVENT_SOF: + // SOF Handler + if (_sof_isr) _sof_isr(event->sof.frame_count); + // Some MCUs after running dcd_remote_wakeup() does not have way to detect the end of remote wakeup // which last 1-15 ms. DCD can use SOF as a clear indicator that bus is back to operational if ( _usbd_dev.suspended ) { _usbd_dev.suspended = 0; + dcd_event_t const event_resume = { .rhport = event->rhport, .event_id = DCD_EVENT_RESUME }; osal_queue_send(_usbd_q, &event_resume, in_isr); } diff --git a/src/device/usbd.h b/src/device/usbd.h index b2bf8ba9d..72401a7e9 100644 --- a/src/device/usbd.h +++ b/src/device/usbd.h @@ -33,6 +33,8 @@ extern "C" { #endif +typedef void (*tud_sof_isr_t) (uint32_t frame_count); + //--------------------------------------------------------------------+ // Application API //--------------------------------------------------------------------+ @@ -84,6 +86,10 @@ bool tud_disconnect(void); // Return false on unsupported MCUs bool tud_connect(void); +// Set Start-of-frame (1ms interval) IRQ handler +// NULL means disabled, frame_count may not be supported on mcus +void tud_sof_isr_set(tud_sof_isr_t sof_isr); + // Carry out Data and Status stage of control transfer // - If len = 0, it is equivalent to sending status only // - If len > wLength : it will be truncated -- cgit v1.3.1 From f212899b54740479eff225d89432d88f0a14f17e Mon Sep 17 00:00:00 2001 From: Reinhard Panhuber Date: Mon, 14 Mar 2022 20:40:33 +0100 Subject: Add SOF callback function for feedback value determination in uac - wip! --- src/class/audio/audio_device.c | 83 +++++++++++++++++++++++++++++++++++ src/class/audio/audio_device.h | 23 +++++++++- src/device/usbd.c | 22 ++++++++-- src/device/usbd_pvt.h | 5 ++- src/portable/synopsys/dwc2/dcd_dwc2.c | 32 ++++++++++++-- 5 files changed, 156 insertions(+), 9 deletions(-) (limited to 'src/device') diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c index 06979b09e..0828f2e6f 100644 --- a/src/class/audio/audio_device.c +++ b/src/class/audio/audio_device.c @@ -306,6 +306,13 @@ typedef struct #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP uint32_t fb_val; // Feedback value for asynchronous mode (in 16.16 format). + +#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR + uint8_t n_frames; // Number of (micro)frames used to estimate feedback value + uint8_t n_frames_current; // Current (micro)frame number + uint32_t feeback_param_factor; // TODO: Set this value within some new tud_audio_set_feedback_params_fm_fs function as feeback_param_factor = f_s / (f_cpu * n_frames)! +#endif + #endif #endif @@ -421,6 +428,10 @@ static inline uint8_t tu_desc_subtype(void const* desc) } #endif +#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR +static bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback); +#endif + bool tud_audio_n_mounted(uint8_t func_id) { TU_VERIFY(func_id < CFG_TUD_AUDIO); @@ -1658,6 +1669,11 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * { audio->ep_fb = ep_addr; +#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR + usbd_sof_enable(rhport, true); // Enable SOF interrupt + audio->n_frames_current = 0; +#endif + // Invoke callback after ep_out is set if (audio->ep_out != 0) { @@ -1682,6 +1698,23 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * p_desc = tu_desc_next(p_desc); } + // Disable SOF interrupt if no driver has any enabled feedback EP +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR + + bool disable = true; + + for(uint8_t i=0; i < CFG_TUD_AUDIO; i++) + { + if (_audiod_fct[i].ep_fb != 0) + { + disable = false; + } + } + + if (disable) usbd_sof_enable(rhport, false); + +#endif + tud_control_status(rhport, p_request); return true; @@ -1970,6 +2003,52 @@ bool audiod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint3 return false; } +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR +bool tud_audio_set_feedback_params_fm_fs(uint8_t func_id, uint32_t f_m, uint32_t f_s) +{ + audiod_function_t* audio = &_audiod_fct[func_id]; + uint8_t n_frame = 1; // TODO: finalize that + audio->n_frames = n_frame; + audio->feeback_param_factor = f_s / f_m / n_frame; // TODO: Check the 16.16 precision! + return true; +} +#endif + +void audiod_sof (uint8_t rhport, uint32_t frame_count) +{ + (void) rhport; + (void) frame_count; + +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR + + // Determine feedback value - The feedback method is described in 5.12.4.2 of the USB 2.0 spec + // Boiled down, the feedback value Ff = n_samples / (micro)frame. + // Since an accuracy of less than 1 Sample / second is desired, at least n_frames = ceil(2^K * f_s / f_cpu) frames need to be measured, where K = 10 for full speed and K = 13 for high speed, f_s is the sampling frequency e.g. 48 kHz and f_cpu is the cpu clock frequency e.g. 100 MHz (or any other master clock whose clock count is available and locked to f_s) + // The update interval in the (4.10.2.1) Feedback Endpoint Descriptor must be less or equal to 2^(K - P), where P = min( ceil(log2(f_cpu / f_s)), K) + // Ff = n_cycles / n_frames * f_s / f_cpu in 16.16 format, where n_cycles are the number of CPU cycles within n_frames + + // Iterate over audio functions and set feedback value + for(uint8_t i=0; i < CFG_TUD_AUDIO; i++) + { + audiod_function_t* audio = &_audiod_fct[i]; + + if (audio->ep_fb != 0) + { + audio->n_frames_current++; + if (audio->n_frames_current == audio->n_frames) + { + uint32_t n_cylces = tud_audio_n_get_fm_n_cycles_cb(rhport, audio->ep_fb); + uint32_t feedback = n_cylces * audio->feeback_param_factor; + + tud_audio_n_fb_set(i, feedback); + audio->n_frames_current = 0; + } + } + } + +#endif +} + bool tud_audio_buffer_and_schedule_control_xfer(uint8_t rhport, tusb_control_request_t const * p_request, void* data, uint16_t len) { // Handles only sending of data not receiving @@ -2247,7 +2326,11 @@ static void audiod_parse_for_AS_params(audiod_function_t* audio, uint8_t const * #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP +#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR +static bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback) +#else bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback) +#endif { TU_VERIFY(func_id < CFG_TUD_AUDIO && _audiod_fct[func_id].p_desc != NULL); diff --git a/src/class/audio/audio_device.h b/src/class/audio/audio_device.h index f406cf281..c9d711a36 100644 --- a/src/class/audio/audio_device.h +++ b/src/class/audio/audio_device.h @@ -191,6 +191,11 @@ #define CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION 0 // 0 or 1 #endif +// Determine feedback value within SOF ISR within audio driver - if disabled the user has to call tud_audio_n_fb_set() with a suitable feedback value on its own. If done within audio driver SOF ISR, tud_audio_n_fb_set() is disabled for user +#ifndef CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR +#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR 1 // 0 or 1 +#endif + // Audio interrupt control EP size - disabled if 0 #ifndef CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN #define CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN 0 // Audio interrupt control - if required - 6 Bytes according to UAC 2 specification (p. 74) @@ -468,8 +473,23 @@ TU_ATTR_WEAK bool tud_audio_fb_done_cb(uint8_t rhport); // // Note that due to a bug in its USB Audio 2.0 driver, Windows currently requires 16.16 format for _all_ USB 2.0 devices. On Linux and macOS it seems the // driver can work with either format. So a good compromise is to keep format correction disabled and stick to 16.16 format. + +// Feedback value can be determined from within the SOF ISR of the audio driver. This should reduce jitter. If the feature is used, the user can not set the feedback value. +# if !CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback); static inline bool tud_audio_fb_set(uint32_t feedback); +# else + +// This callback function is called once the feedback value needs to be updated within the SOF ISR in the audio class. To determine the feedback value, some +// parameters need to be given. The user must implement this callback function and provide the current cycle count of the master clock. +// The feedback endpoint number can be used to identify the correct audio function in case multiple audio functions were defined. +TU_ATTR_WEAK uint32_t tud_audio_n_get_fm_n_cycles_cb(uint8_t rhport, uint8_t ep_fb); + +// f_m : Main clock frequency in Hz i.e. master clock to which sample clock is locked +// f_s : Current sample rate in Hz +bool tud_audio_set_feedback_params_fm_fs(uint8_t func_id, uint32_t f_m, uint32_t f_s); +#endif + #endif #if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN @@ -611,7 +631,7 @@ static inline uint16_t tud_audio_int_ctr_write(uint8_t const* buffer, uint16_t l } #endif -#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && !CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_WITHIN_SOF_ISR static inline bool tud_audio_fb_set(uint32_t feedback) { return tud_audio_n_fb_set(0, feedback); @@ -626,6 +646,7 @@ void audiod_reset (uint8_t rhport); uint16_t audiod_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len); bool audiod_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request); bool audiod_xfer_cb (uint8_t rhport, uint8_t edpt_addr, xfer_result_t result, uint32_t xferred_bytes); +void audiod_sof (uint8_t rhport, uint32_t frame_count); #ifdef __cplusplus } diff --git a/src/device/usbd.c b/src/device/usbd.c index 8662d5b84..170342072 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -139,7 +139,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = audiod_open, .control_xfer_cb = audiod_control_xfer_cb, .xfer_cb = audiod_xfer_cb, - .sof = NULL + .sof = audiod_sof }, #endif @@ -612,7 +612,7 @@ void tud_task (void) for ( uint8_t i = 0; i < TOTAL_DRIVER_COUNT; i++ ) { usbd_class_driver_t const * driver = get_driver(i); - if ( driver->sof ) driver->sof(event.rhport); + if ( driver->sof ) driver->sof(event.rhport, event.sof.frame_count); } break; @@ -1131,7 +1131,18 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr) break; case DCD_EVENT_SOF: - // SOF Handler + // SOF driver handler in ISR context + for (uint8_t i = 0; i < TOTAL_DRIVER_COUNT; i++) + { + usbd_class_driver_t const * driver = get_driver(i); + if (driver->sof) + { + driver->sof(event->rhport, event->sof.frame_count); + // TU_LOG2("%s sof\r\n", driver->name); // too demanding + } + } + + // SOF user handler in ISR context if (_sof_isr) _sof_isr(event->sof.frame_count); // Some MCUs after running dcd_remote_wakeup() does not have way to detect the end of remote wakeup @@ -1441,4 +1452,9 @@ void usbd_edpt_close(uint8_t rhport, uint8_t ep_addr) return; } +void usbd_sof_enable(uint8_t rhport, bool en) +{ + dcd_sof_enable(rhport, en); +} + #endif diff --git a/src/device/usbd_pvt.h b/src/device/usbd_pvt.h index dae95cebb..f9fb543df 100644 --- a/src/device/usbd_pvt.h +++ b/src/device/usbd_pvt.h @@ -48,7 +48,7 @@ typedef struct uint16_t (* open ) (uint8_t rhport, tusb_desc_interface_t const * desc_intf, uint16_t max_len); bool (* control_xfer_cb ) (uint8_t rhport, uint8_t stage, tusb_control_request_t const * request); bool (* xfer_cb ) (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes); - void (* sof ) (uint8_t rhport); /* optional */ + void (* sof ) (uint8_t rhport, uint32_t frame_count); /* optional */ } usbd_class_driver_t; // Invoked when initializing device stack to get additional class drivers. @@ -102,6 +102,9 @@ bool usbd_edpt_ready(uint8_t rhport, uint8_t ep_addr) return !usbd_edpt_busy(rhport, ep_addr) && !usbd_edpt_stalled(rhport, ep_addr); } +// Enable SOF interrupt +void usbd_sof_enable(uint8_t rhport, bool en); + /*------------------------------------------------------------------*/ /* Helper *------------------------------------------------------------------*/ diff --git a/src/portable/synopsys/dwc2/dcd_dwc2.c b/src/portable/synopsys/dwc2/dcd_dwc2.c index 37712d2d9..d92b17703 100644 --- a/src/portable/synopsys/dwc2/dcd_dwc2.c +++ b/src/portable/synopsys/dwc2/dcd_dwc2.c @@ -93,6 +93,9 @@ static uint16_t ep0_pending[2]; // Index determines direction static uint16_t _allocated_fifo_words_tx; // TX FIFO size in words (IN EPs) static bool _out_ep_closed; // Flag to check if RX FIFO size needs an update (reduce its size) +// SOF enabling flag - required for SOF to not get disabled in ISR when SOF was enabled by +static bool _sof_en; + // Calculate the RX FIFO size according to recommendations from reference manual static inline uint16_t calc_rx_ff_size(uint16_t ep_size) { @@ -126,6 +129,8 @@ static void bus_reset(uint8_t rhport) tu_memclr(xfer_status, sizeof(xfer_status)); _out_ep_closed = false; + _sof_en = false; + // clear device address dwc2->dcfg &= ~DCFG_DAD_Msk; @@ -588,12 +593,23 @@ void dcd_disconnect(uint8_t rhport) dwc2->dctl |= DCTL_SDIS; } +// Be advised: audio, video and possibly other iso-ep classes use dcd_sof_enable() to enable/disable its corresponding ISR on purpose! void dcd_sof_enable(uint8_t rhport, bool en) { (void) rhport; - (void) en; + dwc2_regs_t * dwc2 = DWC2_REG(rhport); + + _sof_en = en; - // TODO implement later + if (en) + { + dwc2->gintsts = GINTSTS_SOF; + dwc2->gintmsk |= GINTMSK_SOFM; + } + else + { + dwc2->gintmsk &= ~GINTMSK_SOFM; + } } /*------------------------------------------------------------------*/ @@ -1258,8 +1274,16 @@ void dcd_int_handler(uint8_t rhport) { dwc2->gotgint = GINTSTS_SOF; - // Disable SOF interrupt since currently only used for remote wakeup detection - dwc2->gintmsk &= ~GINTMSK_SOFM; + if (_sof_en) + { + uint32_t frame = (dwc2->dsts & (USB_OTG_DSTS_FNSOF)) >> 8; + dcd_event_sof(rhport, frame, true); + } + else + { + // Disable SOF interrupt if SOF was not explicitly enabled. SOF was used for remote wakeup detection + dwc2->gintmsk &= ~GINTMSK_SOFM; + } dcd_event_bus_signal(rhport, DCD_EVENT_SOF, true); } -- cgit v1.3.1 From 92ac041869b79aba6948e6440bbfc51ba77130ac Mon Sep 17 00:00:00 2001 From: Reinhard Panhuber Date: Wed, 16 Mar 2022 07:13:38 +0100 Subject: Add todos and comments --- src/class/audio/audio_device.c | 2 ++ src/device/usbd.c | 12 +++++++----- 2 files changed, 9 insertions(+), 5 deletions(-) (limited to 'src/device') diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c index 1dbeb7643..37bf76135 100644 --- a/src/class/audio/audio_device.c +++ b/src/class/audio/audio_device.c @@ -2047,6 +2047,8 @@ void audiod_sof (uint8_t rhport, uint32_t frame_count) uint32_t n_cylces = tud_audio_n_get_fm_n_cycles_cb(rhport, audio->ep_fb); uint32_t feedback = ((n_cylces - audio->n_cycles_old) << 3) * audio->feeback_param_factor_N / audio->feeback_param_factor_D; // feeback_param_factor_N has scaling factor of 13 bits, n_cycles 3 and feeback_param_factor_D 1, hence 16.16 precision + // TODO: Implement fast computation in case n_frames * f_s / f_m is a power of two + tud_audio_n_fb_set(i, feedback); audio->n_frames_current = 0; audio->n_cycles_old = n_cylces; diff --git a/src/device/usbd.c b/src/device/usbd.c index 6170c2bda..96ac19c8d 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -587,11 +587,12 @@ void tud_task (void) case DCD_EVENT_SOF: TU_LOG2("\r\n"); - for ( uint8_t i = 0; i < TOTAL_DRIVER_COUNT; i++ ) - { - usbd_class_driver_t const * driver = get_driver(i); - if ( driver->sof ) driver->sof(event.rhport, event.sof.frame_count); - } + // TODO: Should this really be done here in the queue? How to distinguish the calls here from those SOF events which should be handled directly in the ISR routine? If we do it like this, the SOF routines get called two time right now, once in the ISR context and once again here +// for ( uint8_t i = 0; i < TOTAL_DRIVER_COUNT; i++ ) +// { +// usbd_class_driver_t const * driver = get_driver(i); +// if ( driver->sof ) driver->sof(event.rhport, event.sof.frame_count); +// } break; case USBD_EVENT_FUNC_CALL: @@ -1410,6 +1411,7 @@ void usbd_edpt_close(uint8_t rhport, uint8_t ep_addr) void usbd_sof_enable(uint8_t rhport, bool en) { + // TODO: Check needed if all drivers including the user sof_cb does not need an active SOF ISR any more. Only if all drivers switched off SOF calls the SOF interrupt may be disabled dcd_sof_enable(rhport, en); } -- cgit v1.3.1 From 65b6b79e9954c4b8edceea040aba1a8fd80e975c Mon Sep 17 00:00:00 2001 From: hathach Date: Tue, 29 Mar 2022 16:53:45 +0700 Subject: clean up and comment out tud_sof_isr_set --- src/device/usbd.c | 61 +++++++++++++++++++++++---------------------------- src/device/usbd.h | 2 +- src/device/usbd_pvt.h | 2 +- src/tusb_option.h | 2 +- 4 files changed, 30 insertions(+), 37 deletions(-) (limited to 'src/device') diff --git a/src/device/usbd.c b/src/device/usbd.c index 96ac19c8d..8ab67c8de 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -98,7 +98,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = cdcd_open, .control_xfer_cb = cdcd_control_xfer_cb, .xfer_cb = cdcd_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif @@ -110,7 +110,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = mscd_open, .control_xfer_cb = mscd_control_xfer_cb, .xfer_cb = mscd_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif @@ -122,7 +122,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = hidd_open, .control_xfer_cb = hidd_control_xfer_cb, .xfer_cb = hidd_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif @@ -134,7 +134,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = audiod_open, .control_xfer_cb = audiod_control_xfer_cb, .xfer_cb = audiod_xfer_cb, - .sof = audiod_sof + .sof_isr = audiod_sof }, #endif @@ -146,7 +146,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = videod_open, .control_xfer_cb = videod_control_xfer_cb, .xfer_cb = videod_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif @@ -158,7 +158,7 @@ static usbd_class_driver_t const _usbd_driver[] = .reset = midid_reset, .control_xfer_cb = midid_control_xfer_cb, .xfer_cb = midid_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif @@ -170,7 +170,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = vendord_open, .control_xfer_cb = tud_vendor_control_xfer_cb, .xfer_cb = vendord_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif @@ -182,7 +182,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = usbtmcd_open_cb, .control_xfer_cb = usbtmcd_control_xfer_cb, .xfer_cb = usbtmcd_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif @@ -194,7 +194,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = dfu_rtd_open, .control_xfer_cb = dfu_rtd_control_xfer_cb, .xfer_cb = NULL, - .sof = NULL + .sof_isr = NULL }, #endif @@ -206,7 +206,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = dfu_moded_open, .control_xfer_cb = dfu_moded_control_xfer_cb, .xfer_cb = NULL, - .sof = NULL + .sof_isr = NULL }, #endif @@ -218,7 +218,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = netd_open, .control_xfer_cb = netd_control_xfer_cb, .xfer_cb = netd_xfer_cb, - .sof = NULL, + .sof_isr = NULL, }, #endif @@ -230,7 +230,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = btd_open, .control_xfer_cb = btd_control_xfer_cb, .xfer_cb = btd_xfer_cb, - .sof = NULL + .sof_isr = NULL }, #endif }; @@ -264,7 +264,7 @@ static inline usbd_class_driver_t const * get_driver(uint8_t drvid) // DCD Event //--------------------------------------------------------------------+ -static tud_sof_isr_t _sof_isr = NULL; +//static tud_sof_isr_t _sof_isr = NULL; enum { RHPORT_INVALID = 0xFFu }; static uint8_t _usbd_rhport = RHPORT_INVALID; @@ -373,11 +373,11 @@ bool tud_connect(void) return true; } -void tud_sof_isr_set(tud_sof_isr_t sof_isr) -{ - _sof_isr = sof_isr; - dcd_sof_enable(_usbd_rhport, _sof_isr != NULL); -} +//void tud_sof_isr_set(tud_sof_isr_t sof_isr) +//{ +// _sof_isr = sof_isr; +// dcd_sof_enable(_usbd_rhport, _sof_isr != NULL); +//} //--------------------------------------------------------------------+ // USBD Task @@ -422,7 +422,7 @@ bool tud_init (uint8_t rhport) } _usbd_rhport = rhport; - _sof_isr = NULL; + //_sof_isr = NULL; // Init device controller driver dcd_init(rhport); @@ -585,21 +585,12 @@ void tud_task (void) } break; - case DCD_EVENT_SOF: - TU_LOG2("\r\n"); - // TODO: Should this really be done here in the queue? How to distinguish the calls here from those SOF events which should be handled directly in the ISR routine? If we do it like this, the SOF routines get called two time right now, once in the ISR context and once again here -// for ( uint8_t i = 0; i < TOTAL_DRIVER_COUNT; i++ ) -// { -// usbd_class_driver_t const * driver = get_driver(i); -// if ( driver->sof ) driver->sof(event.rhport, event.sof.frame_count); -// } - break; - case USBD_EVENT_FUNC_CALL: TU_LOG2("\r\n"); if ( event.func_call.func ) event.func_call.func(event.func_call.param); break; + case DCD_EVENT_SOF: default: TU_BREAKPOINT(); break; @@ -1114,15 +1105,14 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr) for (uint8_t i = 0; i < TOTAL_DRIVER_COUNT; i++) { usbd_class_driver_t const * driver = get_driver(i); - if (driver->sof) + if (driver->sof_isr) { - driver->sof(event->rhport, event->sof.frame_count); - // TU_LOG2("%s sof\r\n", driver->name); // too demanding + driver->sof_isr(event->rhport, event->sof.frame_count); } } // SOF user handler in ISR context - if (_sof_isr) _sof_isr(event->sof.frame_count); + // if (_sof_isr) _sof_isr(event->sof.frame_count); // Some MCUs after running dcd_remote_wakeup() does not have way to detect the end of remote wakeup // which last 1-15 ms. DCD can use SOF as a clear indicator that bus is back to operational @@ -1133,6 +1123,8 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr) dcd_event_t const event_resume = { .rhport = event->rhport, .event_id = DCD_EVENT_RESUME }; osal_queue_send(_usbd_q, &event_resume, in_isr); } + + // skip osal queue for SOF in usbd task break; default: @@ -1411,7 +1403,8 @@ void usbd_edpt_close(uint8_t rhport, uint8_t ep_addr) void usbd_sof_enable(uint8_t rhport, bool en) { - // TODO: Check needed if all drivers including the user sof_cb does not need an active SOF ISR any more. Only if all drivers switched off SOF calls the SOF interrupt may be disabled + // TODO: Check needed if all drivers including the user sof_cb does not need an active SOF ISR any more. + // Only if all drivers switched off SOF calls the SOF interrupt may be disabled dcd_sof_enable(rhport, en); } diff --git a/src/device/usbd.h b/src/device/usbd.h index 72401a7e9..d485d8711 100644 --- a/src/device/usbd.h +++ b/src/device/usbd.h @@ -88,7 +88,7 @@ bool tud_connect(void); // Set Start-of-frame (1ms interval) IRQ handler // NULL means disabled, frame_count may not be supported on mcus -void tud_sof_isr_set(tud_sof_isr_t sof_isr); +// void tud_sof_isr_set(tud_sof_isr_t sof_isr); // Carry out Data and Status stage of control transfer // - If len = 0, it is equivalent to sending status only diff --git a/src/device/usbd_pvt.h b/src/device/usbd_pvt.h index 144736a46..603ffc936 100644 --- a/src/device/usbd_pvt.h +++ b/src/device/usbd_pvt.h @@ -48,7 +48,7 @@ typedef struct uint16_t (* open ) (uint8_t rhport, tusb_desc_interface_t const * desc_intf, uint16_t max_len); bool (* control_xfer_cb ) (uint8_t rhport, uint8_t stage, tusb_control_request_t const * request); bool (* xfer_cb ) (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes); - void (* sof ) (uint8_t rhport, uint32_t frame_count); /* optional */ + void (* sof_isr ) (uint8_t rhport, uint32_t frame_count); // optional } usbd_class_driver_t; // Invoked when initializing device stack to get additional class drivers. diff --git a/src/tusb_option.h b/src/tusb_option.h index b3c3f4c5e..e1e418f89 100644 --- a/src/tusb_option.h +++ b/src/tusb_option.h @@ -297,7 +297,7 @@ #endif #ifndef CFG_TUD_INTERFACE_MAX - #define CFG_TUD_INTERFACE_MAX 8 + #define CFG_TUD_INTERFACE_MAX 16 #endif #ifndef CFG_TUD_CDC -- cgit v1.3.1 From c5ba1ea8c17a379beb47d9689e85e2ce6e67206f Mon Sep 17 00:00:00 2001 From: hathach Date: Fri, 13 May 2022 22:54:47 +0700 Subject: changes proposal to audio feedback computation --- src/class/audio/audio_device.c | 239 +++++++++++++++++------------------------ src/class/audio/audio_device.h | 100 +++++------------ src/common/tusb_common.h | 6 -- src/device/usbd.c | 6 +- src/device/usbd.h | 2 +- 5 files changed, 129 insertions(+), 224 deletions(-) (limited to 'src/device') diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c index b0a49fb04..c3a252a2c 100644 --- a/src/class/audio/audio_device.c +++ b/src/class/audio/audio_device.c @@ -261,6 +261,13 @@ osal_mutex_def_t rx_supp_ff_mutex_rd_3[CFG_TUD_AUDIO_FUNC_3_N_RX_SUPP_SW_FIFO]; #endif #endif +enum { + FEEDBACK_COMPUTE_DISABLED, + FEEDBACK_COMPUTE_FLOAT, + FEEDBACK_COMPUTE_FIXED, + FEEDBACK_COMPUTE_POWER_OF_2, +}; + typedef struct { uint8_t rhport; @@ -305,38 +312,22 @@ typedef struct #endif #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER - uint32_t fb_val; // Feedback value for asynchronous mode (in 16.16 format). - uint8_t fb_n_frames; // Number of (micro)frames used to estimate feedback value -#endif -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER - volatile uint32_t fb_val; // Feedback value for asynchronous mode (in 16.16 format). - uint32_t fb_val_min; // Maximum allowed feedback value according to UAC2 FMT-2.0 section 2.3.1.1. - uint32_t fb_val_max; // Maximum allowed feedback value according to UAC2 FMT-2.0 section 2.3.1.1. - uint8_t fb_n_frames; // Number of (micro)frames used to estimate feedback value - volatile uint8_t fb_n_frames_current; // Current (micro)frame number - volatile uint32_t fb_n_cycles_old; // Old cycle count - uint32_t * fb_param_p_cycle_count; // Pointer to cycle counter + uint32_t fb_val; // Feedback value for asynchronous mode (in 16.16 format). + uint8_t fb_n_frames; // Number of (micro)frames used to estimate feedback value + uint8_t fb_n_frames_shift; + uint8_t fb_compute_method; + + uint32_t fb_val_min; // Maximum allowed feedback value according to UAC2 FMT-2.0 section 2.3.1.1. + uint32_t fb_val_max; // Maximum allowed feedback value according to UAC2 FMT-2.0 section 2.3.1.1. -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT + // should be union uint8_t fb_power_of_two_val; -#endif -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FLOAT float fb_float_val; -#endif -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FIXED_POINT - uint64_t fb_param_factor_N; // Numerator of feedback parameter coefficient - uint64_t fb_param_factor_D; // Denominator of feedback parameter coefficient -#endif -#endif // CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER - volatile uint32_t fb_val; // Feedback value for asynchronous mode (in 16.16 format). - uint8_t fb_n_frames; // Number of (micro)frames used to estimate feedback value -#endif + uint32_t fb_param_factor_N; + uint32_t fb_param_factor_D; #endif // CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP #endif // CFG_TUD_AUDIO_ENABLE_EP_OUT @@ -453,8 +444,8 @@ static inline uint8_t tu_desc_subtype(void const* desc) } #endif -#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER) -static bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback); +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP +bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback); #endif bool tud_audio_n_mounted(uint8_t func_id) @@ -1695,16 +1686,11 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN && desc_ep->bmAttributes.usage == 1) // Check if usage is explicit data feedback { audio->ep_fb = ep_addr; - audio->fb_n_frames = desc_ep->bInterval; - -#if ((CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER) || (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER)) - usbd_sof_enable(rhport, true); // Enable SOF interrupt -#endif + audio->fb_n_frames = 1 << (desc_ep->bInterval -1); + audio->fb_n_frames_shift = desc_ep->bInterval -1; -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER - audio->fb_n_frames_current = 0; - audio->fb_n_cycles_old = 0; -#endif + // Enable SOF interrupt if callback is implemented + if (tud_audio_sof_isr) usbd_sof_enable(rhport, true); // // Invoke callback after ep_out is set // if (audio->ep_out != 0) @@ -1725,6 +1711,24 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * // Invoke one callback for a final set interface if (tud_audio_set_itf_cb) TU_VERIFY(tud_audio_set_itf_cb(rhport, p_request)); + // Prepare feedback computation if callback is available + if (tud_audio_feedback_params_cb) + { + uint32_t sample_freq = 0; + uint32_t mclk_freq = 0; + uint8_t fixed_point = 0; + tud_audio_feedback_params_cb(func_id, alt, &sample_freq, &mclk_freq, &fixed_point); + + if ( sample_freq == 0 || mclk_freq == 0 ) + { + audio->fb_compute_method = FEEDBACK_COMPUTE_DISABLED; + }else + { + audio->fb_compute_method = fixed_point ? FEEDBACK_COMPUTE_FIXED : FEEDBACK_COMPUTE_FLOAT; + set_fb_params(audio, sample_freq, mclk_freq); + } + } + // We are done - abort loop break; } @@ -1734,22 +1738,17 @@ static bool audiod_set_interface(uint8_t rhport, tusb_control_request_t const * } // Disable SOF interrupt if no driver has any enabled feedback EP -#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && ((CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER) || (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER)) - bool disable = true; - for(uint8_t i=0; i < CFG_TUD_AUDIO; i++) { if (_audiod_fct[i].ep_fb != 0) { disable = false; + break; } } - if (disable) usbd_sof_enable(rhport, false); -#endif - tud_control_status(rhport, p_request); return true; @@ -2022,7 +2021,7 @@ bool audiod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint3 // Transmission of feedback EP finished if (_audiod_fct[func_id].ep_fb == ep_addr) { - if (tud_audio_fb_done_cb) TU_VERIFY(tud_audio_fb_done_cb(rhport)); + if (tud_audio_fb_done_cb) tud_audio_fb_done_cb(func_id); // Schedule a transmit with the new value if EP is not busy if (!usbd_edpt_busy(rhport, _audiod_fct[func_id].ep_fb)) @@ -2038,81 +2037,93 @@ bool audiod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint3 return false; } -#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && ((CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER) || (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER)) +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP uint8_t tud_audio_n_get_fb_n_frames(uint8_t func_id) { return _audiod_fct[func_id].fb_n_frames; } #endif -#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER) +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP -// This function must be called from the user within the tud_audio_set_itf_cb(rhport, p_request) callback function, where p_request needs to be checked as -// uint8_t const itf = tu_u16_low(p_request->wIndex); -// uint8_t const alt = tu_u16_low(p_request->wValue); -// such that tud_audio_set_fb_params() gets called with the parameters corresponding to the defined interface and alternate setting -// Also, start the main clock cycle counter (or reset its value) within tud_audio_set_itf_cb() -TU_ATTR_WEAK bool tud_audio_set_fb_params(uint8_t func_id, uint32_t f_m, uint32_t f_s, uint32_t * p_cycle_count) +static bool set_fb_params(audiod_function_t* audio, uint32_t f_s, uint32_t f_m) { - audiod_function_t* audio = &_audiod_fct[func_id]; - audio->fb_param_p_cycle_count = p_cycle_count; - // Check if frame interval is within sane limits // The interval value audio->fb_n_frames was taken from the descriptors within audiod_set_interface() - // n_frames_min is ceil(2^10 * f_s / f_m) for full speed and ceil(2^13 * f_s / f_m) for high speed - this lower limit ensures the measures feedback value has sufficient precision - if ((TUSB_SPEED_FULL == tud_speed_get() && ((2^10 * f_s / f_m) + 1) > audio->fb_n_frames) || (TUSB_SPEED_HIGH == tud_speed_get() && ((2^13 * f_s / f_m) + 1) > audio->fb_n_frames)) + // n_frames_min is ceil(2^10 * f_s / f_m) for full speed and ceil(2^13 * f_s / f_m) for high speed + // this lower limit ensures the measures feedback value has sufficient precision + uint32_t const k = (TUSB_SPEED_FULL == tud_speed_get()) ? 10 : 13; + if ( (((1UL << k) * f_s / f_m) + 1) > audio->fb_n_frames ) { - TU_LOG2(" UAC2 feedback interval too small\r\n"); TU_BREAKPOINT(); return false; + TU_LOG1(" UAC2 feedback interval too small\r\n"); TU_BREAKPOINT(); return false; } - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT // Check if parameters really allow for a power of two division - if ((f_m % f_s) != 0 || !tu_is_power_of_two(audio->fb_n_frames * f_m / f_s)) + if ((f_m % f_s) == 0 && tu_is_power_of_two(f_m / f_s)) { - TU_LOG2(" FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT not possible!\r\n"); TU_BREAKPOINT(); return false; + audio->fb_compute_method = FEEDBACK_COMPUTE_POWER_OF_2; + audio->fb_power_of_two_val = 16 - audio->fb_n_frames_shift - tu_log2(f_m / f_s); + }else if ( audio->fb_compute_method == FEEDBACK_COMPUTE_FLOAT) + { + audio->fb_float_val = (float)f_s / f_m * (1UL << (16 - audio->fb_n_frames_shift)); + }else + { + audio->fb_param_factor_N = f_s; + audio->fb_param_factor_D = f_m; } - audio->fb_power_of_two_val = 16 - tu_log2(audio->fb_n_frames * f_m / f_s); -#endif + // Minimal/Maximum value in 16.16 format for full speed (1ms per frame) or high speed (125 us per frame) + uint32_t const frame_div = (TUSB_SPEED_FULL == tud_speed_get()) ? 1000 : 8000; + audio->fb_val_min = (f_s/frame_div - 1) << 16; + audio->fb_val_max = (f_s/frame_div + 1) << 16; -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FLOAT - audio->fb_float_val = (float)f_s / audio->fb_n_frames / f_m * (1 << 16); + return true; +} #endif -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FIXED_POINT - - // f_s max is 2^19-1 = 524287 Hz - // f_m max is 2^29/(1 ms * n_frames) for full speed and 2^29/(125 us * n_frames) for high speed, this means for f_m fitting in an uint32, n_frames must be < 125 for full speed and < 1000 for high speed (1000 does not fit into uint8 so the maximum possible value cannot even be reached by UAC2 - we don't need to check for it) +uint32_t tud_audio_feedback_update(uint8_t func_id, uint32_t cycles) +{ + audiod_function_t* audio = &_audiod_fct[func_id]; + uint32_t feedback; - if ((f_s > (2^19)-1) || (TUSB_SPEED_FULL == tud_speed_get() && (audio->fb_n_frames > 125))) + switch (audio->fb_compute_method) { - // If this check fails, not every thing is lost - you need to re-evaluate the scaling factors of the parameters such that the numbers fit into uint64 again. feedback = n_cycles * S_c / (n_frames * S_n) * f_s * S_s / (f_m * S_m). In the end S_c*S_s / (S_n * S_m) = 2^16 for a 16.16 fixed point precision. If you find something, define your own function of tud_audio_set_feedback_params_fm_fs() and audiod_sof() and use your values - TU_LOG2(" FEEDBACK_DETERMINATION_MODE_FIXED_POINT not possible!\r\n"); TU_BREAKPOINT(); return false; - } + case FEEDBACK_COMPUTE_POWER_OF_2: + feedback = cycles << audio->fb_power_of_two_val; + break; - audio->fb_param_factor_N = (uint64_t)f_s << 13; - audio->fb_param_factor_D = (uint64_t)f_m * audio->fb_n_frames; -#endif + case FEEDBACK_COMPUTE_FLOAT: + feedback = (uint32_t) ((float) cylces * audio->fb_float_val); + break; + + case FEEDBACK_COMPUTE_FIXED: + { + uint64_t fb64 = (((uint64_t) cycles) * audio->fb_param_factor_N) << (16 - audio->fb_n_frames_shift); + feedback = (uint32_t) (fb64 / audio->fb_param_factor_D); + } + break; - audio->fb_val_min = ((TUSB_SPEED_FULL == tud_speed_get() ? (f_s/1000) : (f_s/8000)) - 1) << 16; // Minimal value in 16.16 format for full speed (1ms per frame) or high speed (125 us per frame) - audio->fb_val_max = ((TUSB_SPEED_FULL == tud_speed_get() ? (f_s/1000) : (f_s/8000)) + 1) << 16; // Maximum value in 16.16 format + default: return 0; + } - return true; + // For Windows: https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/usb-2-0-audio-drivers + // The size of isochronous packets created by the device must be within the limits specified in FMT-2.0 section 2.3.1.1. + // This means that the deviation of actual packet size from nominal size must not exceed +/- one audio slot + // (audio slot = channel count samples). + if ( feedback > audio->fb_val_max ) feedback = audio->fb_val_max; + if ( feedback < audio->fb_val_min ) feedback = audio->fb_val_min; + + tud_audio_n_fb_set(func_id, feedback); + return feedback; } -#endif -TU_ATTR_WEAK void audiod_sof (uint8_t rhport, uint32_t frame_count) +void audiod_sof_isr (uint8_t rhport, uint32_t frame_count) { (void) rhport; - (void) frame_count; // frame_count is not used since some devices may not provide the frame count value #if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP - -#if (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER) - // Determine feedback value - The feedback method is described in 5.12.4.2 of the USB 2.0 spec // Boiled down, the feedback value Ff = n_samples / (micro)frame. // Since an accuracy of less than 1 Sample / second is desired, at least n_frames = ceil(2^K * f_s / f_m) frames need to be measured, where K = 10 for full speed and K = 13 for high speed, f_s is the sampling frequency e.g. 48 kHz and f_m is the cpu clock frequency e.g. 100 MHz (or any other master clock whose clock count is available and locked to f_s) @@ -2126,59 +2137,13 @@ TU_ATTR_WEAK void audiod_sof (uint8_t rhport, uint32_t frame_count) if (audio->ep_fb != 0) { - audio->fb_n_frames_current++; - if (audio->fb_n_frames_current == audio->fb_n_frames) + uint32_t const interval = (1UL << audio->fb_n_frames); + if ( 0 == (frame_count & (interval-1)) ) { - uint32_t n_cylces = *audio->fb_param_p_cycle_count; - uint32_t feedback; - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT - feedback = (n_cylces - audio->fb_n_cycles_old) << audio->fb_power_of_two_val; -#endif - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FLOAT - feedback = (uint32_t)((float)(n_cylces - audio->fb_n_cycles_old) * audio->fb_float_val); -#endif - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FIXED_POINT - feedback = ((n_cylces - audio->fb_n_cycles_old) << 3) * audio->fb_param_factor_N / audio->fb_param_factor_D; // feeback_param_factor_N has scaling factor of 13 bits, n_cycles 3 and feeback_param_factor_D 1, hence 16.16 precision -#endif - - // For Windows: https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/usb-2-0-audio-drivers - // The size of isochronous packets created by the device must be within the limits specified in FMT-2.0 section 2.3.1.1. This means that the deviation of actual packet size from nominal size must not exceed +/- one audio slot (audio slot = channel count samples). - - if (feedback > audio->fb_val_max){ - feedback = audio->fb_val_max; - } - if ( feedback < audio->fb_val_min) { - feedback = audio->fb_val_min; - } - - // Buffer count checks ? - - tud_audio_n_fb_set(i, feedback); - audio->fb_n_frames_current = 0; - audio->fb_n_cycles_old = n_cylces; + if(tud_audio_sof_isr) tud_audio_sof_isr(i, frame_count); } } } - -#endif // (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER) - -#if (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER) - // Iterate over audio functions and call callback function - for(uint8_t i=0; i < CFG_TUD_AUDIO; i++) - { - audiod_function_t* audio = &_audiod_fct[i]; - - if (audio->ep_fb != 0) - { - tud_audio_sof_isr_cb(i, frame_count); - } - } - -#endif // (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER) - #endif // CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP } @@ -2459,11 +2424,7 @@ static void audiod_parse_for_AS_params(audiod_function_t* audio, uint8_t const * #if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER -static bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback) -#else bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback) -#endif { TU_VERIFY(func_id < CFG_TUD_AUDIO && _audiod_fct[func_id].p_desc != NULL); diff --git a/src/class/audio/audio_device.h b/src/class/audio/audio_device.h index e8721cf27..9ed7d1da4 100644 --- a/src/class/audio/audio_device.h +++ b/src/class/audio/audio_device.h @@ -191,41 +191,6 @@ #define CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION 0 // 0 or 1 #endif -// Possible options for determination of feedback value -#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER 1 // Feedback value must be determined by the user itself and set by use of tud_audio_n_fb_set(). The feedback value may be determined e.g. from some fill status of some FIFO buffer. Advantage: No ISR interrupt is enabled, hence the CPU need not to handle an ISR every 1ms or 125us and thus less CPU load, disadvantage: typically a larger FIFO is needed to compensate for jitter (e.g. 8 frames), i.e. a larger delay is introduced. -#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER 2 // Feedback value is calculated within the audio driver by use of SOF interrupt. The driver needs information about the master clock f_m from which the audio sample frequency f_s is derived, f_s itself, and the cycle count of f_m at time of the SOF interrupt (e.g. by use of a hardware counter) - see tud_audio_set_fb_params(). Advantage: Reduced jitter in the feedback value computation, hence, the receive FIFO can be smaller (e.g. 2 frames) and thus a smaller delay is possible, disadvantage: higher CPU load due to SOF ISR handling every frame i.e. 1ms or 125us. This option is a great starting point to try the SOF ISR option but depending on your hardware setup (performance of the CPU) it might not work. If so, figure out why and use the next option. (The most critical point is the reading of the cycle counter value of f_m. It is read from within the SOF ISR - see: audiod_sof() -, hence, the ISR must has a high priority such that no software dependent "random" delay i.e. jitter is introduced). -#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER 3 // Feedback value is determined by the user by use of SOF interrupt. The user may use tud_audio_sof_isr_cb() which is called every SOF (of course only invoked when an alternate interface other than zero was set). The number of frames used to determine the feedback value for the currently active alternate setting can be get by tud_audio_get_fb_n_frames(). The feedback value must be set by use of tud_audio_n_fb_set(). - -// Determine feedback value within SOF ISR within audio driver - if disabled the user has to call tud_audio_n_fb_set() with a suitable feedback value on its own. If done within audio driver SOF ISR, tud_audio_n_fb_set() is disabled for user -#ifndef CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION -#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER -#endif - -#ifdef CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION -#if (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION != CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER && CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION != CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER && CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION != CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER) -#error Unknown CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION. Possible choices are: CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER, CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER, or CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER! -#endif -#endif - -// Feeback calculation mode -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER - -#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT 1 -#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FLOAT 2 -#define CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FIXED_POINT 3 - -#ifndef CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE -#error You must tell the driver the feedback determination mode! Possible choices are: CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT, CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FLOAT, or CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FIXED_POINT! -#endif - -#ifdef CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE -#if (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE != CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE != CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FLOAT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE != CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FIXED_POINT) -#error Unknown CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE. Possible choices are: CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_POWER_OF_TWO_SHIFT, CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FLOAT, or CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_MODE_FIXED_POINT! -#endif -#endif - -#endif - // Audio interrupt control EP size - disabled if 0 #ifndef CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN #define CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN 0 // Audio interrupt control - if required - 6 Bytes according to UAC 2 specification (p. 74) @@ -493,45 +458,14 @@ TU_ATTR_WEAK bool tud_audio_rx_done_post_read_cb(uint8_t rhport, uint16_t n_byte #endif #if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP -TU_ATTR_WEAK bool tud_audio_fb_done_cb(uint8_t rhport); - -#if (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER) - -// This function is used to provide data rate feedback from an asynchronous sink. Feedback value will be sent at FB endpoint interval till it's changed. -// -// The feedback format is specified to be 16.16 for HS and 10.14 for FS devices (see Universal Serial Bus Specification Revision 2.0 5.12.4.2). By default, -// the choice of format is left to the caller and feedback argument is sent as-is. If CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION is set, then tinyusb -// expects 16.16 format and handles the conversion to 10.14 on FS. -// -// Note that due to a bug in its USB Audio 2.0 driver, Windows currently requires 16.16 format for _all_ USB 2.0 devices. On Linux and macOS it seems the -// driver can work with either format. So a good compromise is to keep format correction disabled and stick to 16.16 format. - -// Feedback value can be determined from within the SOF ISR of the audio driver. This should reduce jitter. If the feature is used, the user can not set the feedback value. - -bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback); -static inline bool tud_audio_fb_set(uint32_t feedback); +TU_ATTR_WEAK void tud_audio_fb_done_cb(uint8_t func_id); -uint8_t tud_audio_n_get_fb_n_frames(uint8_t func_id); -static inline uint8_t tud_audio_get_fb_n_frames(); - -#endif // (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER) - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER - -// f_m : Main clock frequency in Hz i.e. master clock to which sample clock is locked -// f_s : Current sample rate in Hz -// p_cycle_count : Pointer to main clock cycle counter register where the current count can be read from (e.g. a timer register) -// This function must be called from the user within the tud_audio_set_itf_cb(rhport, p_request) callback function, where p_request needs to be checked as -// uint8_t const itf = tu_u16_low(p_request->wIndex); -// uint8_t const alt = tu_u16_low(p_request->wValue); -// such that tud_audio_set_fb_params() gets called with the parameters corresponding to the defined interface and alternate setting -// Also, start the main clock cycle counter (or reset its value) within tud_audio_set_itf_cb() -bool tud_audio_set_fb_params(uint8_t func_id, uint32_t f_m, uint32_t f_s, uint32_t * p_cycle_count); +// determined by the user itself and set by use of tud_audio_n_fb_set(). The feedback value may be determined e.g. from some fill status of some FIFO buffer. Advantage: No ISR interrupt is enabled, hence the CPU need not to handle an ISR every 1ms or 125us and thus less CPU load, disadvantage: typically a larger FIFO is needed to compensate for jitter (e.g. 8 frames), i.e. a larger delay is introduced. -#endif // CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_AUDIO_DRIVER +// Feedback value is calculated within the audio driver by use of SOF interrupt. The driver needs information about the master clock f_m from which the audio sample frequency f_s is derived, f_s itself, and the cycle count of f_m at time of the SOF interrupt (e.g. by use of a hardware counter) - see tud_audio_set_fb_params(). Advantage: Reduced jitter in the feedback value computation, hence, the receive FIFO can be smaller (e.g. 2 frames) and thus a smaller delay is possible, disadvantage: higher CPU load due to SOF ISR handling every frame i.e. 1ms or 125us. This option is a great starting point to try the SOF ISR option but depending on your hardware setup (performance of the CPU) it might not work. If so, figure out why and use the next option. (The most critical point is the reading of the cycle counter value of f_m. It is read from within the SOF ISR - see: audiod_sof() -, hence, the ISR must has a high priority such that no software dependent "random" delay i.e. jitter is introduced). -#if (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER) +// Feedback value is determined by the user by use of SOF interrupt. The user may use tud_audio_sof_isr() which is called every SOF (of course only invoked when an alternate interface other than zero was set). The number of frames used to determine the feedback value for the currently active alternate setting can be get by tud_audio_get_fb_n_frames(). The feedback value must be set by use of tud_audio_n_fb_set(). // This function is used to provide data rate feedback from an asynchronous sink. Feedback value will be sent at FB endpoint interval till it's changed. // @@ -539,20 +473,35 @@ bool tud_audio_set_fb_params(uint8_t func_id, uint32_t f_m, uint32_t f_s, uint32 // the choice of format is left to the caller and feedback argument is sent as-is. If CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION is set, then tinyusb // expects 16.16 format and handles the conversion to 10.14 on FS. // -// Note that due to a bug in its USB Audio 2.0 driver, Windows currently requires 16.16 format for _all_ USB 2.0 devices. On Linux and macOS it seems the +// Note that due to a bug in its USB Audio 2.0 driver, Windows currently requires 16.16 format for _all_ USB 2.0 devices. On Linux and macOS it seems the // driver can work with either format. So a good compromise is to keep format correction disabled and stick to 16.16 format. // Feedback value can be determined from within the SOF ISR of the audio driver. This should reduce jitter. If the feature is used, the user can not set the feedback value. +// Determine feedback value - The feedback method is described in 5.12.4.2 of the USB 2.0 spec +// Boiled down, the feedback value Ff = n_samples / (micro)frame. +// Since an accuracy of less than 1 Sample / second is desired, at least n_frames = ceil(2^K * f_s / f_m) frames need to be measured, where K = 10 for full speed and K = 13 for high speed, f_s is the sampling frequency e.g. 48 kHz and f_m is the cpu clock frequency e.g. 100 MHz (or any other master clock whose clock count is available and locked to f_s) +// The update interval in the (4.10.2.1) Feedback Endpoint Descriptor must be less or equal to 2^(K - P), where P = min( ceil(log2(f_m / f_s)), K) +// feedback = n_cycles / n_frames * f_s / f_m in 16.16 format, where n_cycles are the number of main clock cycles within fb_n_frames + bool tud_audio_n_fb_set(uint8_t func_id, uint32_t feedback); static inline bool tud_audio_fb_set(uint32_t feedback); uint8_t tud_audio_n_get_fb_n_frames(uint8_t func_id); static inline uint8_t tud_audio_get_fb_n_frames(); -TU_ATTR_WEAK void tud_audio_sof_isr_cb(uint8_t func_id, uint32_t frame); +// Update feedback value with passed cycles since last time this update function is called. +// Typically called within tud_audio_sof_isr(). Required tud_audio_feedback_params_cb() is implemented +// This function will also call tud_audio_feedback_set() +// return feedback value in 16.16 for reference (0 for error) +uint32_t tud_audio_feedback_update(uint8_t func_id, uint32_t cycles); + +// mclk_freq : Main clock frequency in Hz i.e. master clock to which sample clock is locked +// sample_freq : sample frequency in Hz +// fixed_point : 0 float (default), 1 fixed point (for mcu without FPU) +TU_ATTR_WEAK void tud_audio_feedback_params_cb(uint8_t func_id, uint8_t alt_itf, uint32_t* sample_freq, uint32_t* mclk_freq, uint8_t* fixed_point); -#endif // (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER) +TU_ATTR_WEAK void tud_audio_sof_isr(uint8_t func_id, uint32_t frame); #endif // CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP @@ -695,7 +644,8 @@ static inline uint16_t tud_audio_int_ctr_write(uint8_t const* buffer, uint16_t l } #endif -#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP && ((CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_NO_SOF_BY_USER) || (CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION == CFG_TUD_AUDIO_ENABLE_FEEDBACK_DETERMINATION_OPTION_SOF_BY_USER)) +#if CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP + static inline bool tud_audio_fb_set(uint32_t feedback) { return tud_audio_n_fb_set(0, feedback); @@ -716,7 +666,7 @@ void audiod_reset (uint8_t rhport); uint16_t audiod_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len); bool audiod_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request); bool audiod_xfer_cb (uint8_t rhport, uint8_t edpt_addr, xfer_result_t result, uint32_t xferred_bytes); -void audiod_sof (uint8_t rhport, uint32_t frame_count); +void audiod_sof_isr (uint8_t rhport, uint32_t frame_count); #ifdef __cplusplus } diff --git a/src/common/tusb_common.h b/src/common/tusb_common.h index bcdf8933a..b1ee40a1a 100644 --- a/src/common/tusb_common.h +++ b/src/common/tusb_common.h @@ -134,12 +134,6 @@ TU_ATTR_ALWAYS_INLINE static inline uint32_t tu_offset4k(uint32_t value) { retur //------------- Mathematics -------------// TU_ATTR_ALWAYS_INLINE static inline uint32_t tu_div_ceil(uint32_t v, uint32_t d) { return (v + d -1)/d; } -/// inclusive range checking TODO remove -TU_ATTR_ALWAYS_INLINE static inline bool tu_within(uint32_t lower, uint32_t value, uint32_t upper) -{ - return (lower <= value) && (value <= upper); -} - // log2 of a value is its MSB's position // TODO use clz TODO remove static inline uint8_t tu_log2(uint32_t value) diff --git a/src/device/usbd.c b/src/device/usbd.c index 8ab67c8de..b32cee813 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -69,7 +69,7 @@ typedef struct volatile uint8_t cfg_num; // current active configuration (0x00 is not configured) uint8_t speed; - uint8_t itf2drv[16]; // map interface number to driver (0xff is invalid) + uint8_t itf2drv[CFG_TUD_INTERFACE_MAX]; // map interface number to driver (0xff is invalid) uint8_t ep2drv[CFG_TUD_ENDPPOINT_MAX][2]; // map endpoint to driver ( 0xff is invalid ), can use only 4-bit each tu_edpt_state_t ep_status[CFG_TUD_ENDPPOINT_MAX][2]; @@ -134,7 +134,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = audiod_open, .control_xfer_cb = audiod_control_xfer_cb, .xfer_cb = audiod_xfer_cb, - .sof_isr = audiod_sof + .sof_isr = audiod_sof_isr }, #endif @@ -170,7 +170,7 @@ static usbd_class_driver_t const _usbd_driver[] = .open = vendord_open, .control_xfer_cb = tud_vendor_control_xfer_cb, .xfer_cb = vendord_xfer_cb, - .sof_isr = NULL + .sof_isr = NULL }, #endif diff --git a/src/device/usbd.h b/src/device/usbd.h index d485d8711..30a27c5ee 100644 --- a/src/device/usbd.h +++ b/src/device/usbd.h @@ -33,7 +33,7 @@ extern "C" { #endif -typedef void (*tud_sof_isr_t) (uint32_t frame_count); +// typedef void (*tud_sof_isr_t) (uint32_t frame_count); //--------------------------------------------------------------------+ // Application API -- cgit v1.3.1