diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/class/audio/audio_device.c | 58 | ||||
| -rw-r--r-- | src/class/audio/audio_device.h | 46 |
2 files changed, 96 insertions, 8 deletions
diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c index a65d605b7..05339f9ce 100644 --- a/src/class/audio/audio_device.c +++ b/src/class/audio/audio_device.c @@ -341,7 +341,7 @@ typedef struct // Audio control interrupt buffer - no FIFO - 6 Bytes according to UAC 2 specification (p. 74) #if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - CFG_TUSB_MEM_SECTION CFG_TUSB_MEM_ALIGN uint8_t ep_int_ctr_buf[CFG_TUD_AUDIO_INT_CTR_EP_IN_SW_BUFFER_SIZE]; + CFG_TUSB_MEM_ALIGN uint8_t ep_int_ctr_buf[CFG_TUD_AUDIO_INT_CTR_EP_IN_SW_BUFFER_SIZE]; #endif // Decoding parameters - parameters are set when alternate AS interface is set by host @@ -464,7 +464,7 @@ bool tud_audio_n_mounted(uint8_t func_id) if (audio->ep_in == 0) return false; #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP if (audio->ep_int_ctr == 0) return false; #endif @@ -813,11 +813,13 @@ tu_fifo_t* tud_audio_n_get_tx_support_ff(uint8_t func_id, uint8_t ff_idx) #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP // If no interrupt transmit is pending bytes get written into buffer and a transmit is scheduled - once transmit completed tud_audio_int_ctr_done_cb() is called in inform user uint16_t tud_audio_int_ctr_n_write(uint8_t func_id, uint8_t const* buffer, uint16_t len) { + TU_VERIFY(_audiod_fct[func_id].ep_int_ctr != 0); + TU_VERIFY(func_id < CFG_TUD_AUDIO && _audiod_fct[func_id].p_desc != NULL); // We write directly into the EP's buffer - abort if previous transfer not complete @@ -1079,6 +1081,52 @@ static inline bool audiod_fb_send(uint8_t rhport, audiod_function_t *audio) } #endif +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP +static bool set_int_ctr_number(audiod_function_t *audio) +{ + + uint8_t const *p_desc = audio->p_desc; + // Get pointer at end + uint8_t const *p_desc_end = audio->p_desc + audio->desc_length - TUD_AUDIO_DESC_IAD_LEN; + + + // p_desc starts at required interface with alternate setting zero + while (p_desc < p_desc_end) + { + // Find correct interface + if (tu_desc_type(p_desc) == TUSB_DESC_INTERFACE && ((tusb_desc_interface_t const * )p_desc)->bInterfaceNumber == 0 && ((tusb_desc_interface_t const * )p_desc)->bAlternateSetting == 0) + { + + uint8_t foundEPs = 0, nEps = ((tusb_desc_interface_t const * )p_desc)->bNumEndpoints; + while (foundEPs < nEps && p_desc < p_desc_end) + { + // found :n endpoint + if (tu_desc_type(p_desc) == TUSB_DESC_ENDPOINT) + { + tusb_desc_endpoint_t const* desc_ep = (tusb_desc_endpoint_t const *) p_desc; + + uint8_t const ep_addr = desc_ep->bEndpointAddress; + + if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN && desc_ep->bmAttributes.xfer == 0x03) // Check if usage is interrupt EP + { + audio->ep_int_ctr = ep_addr; + TU_ASSERT(usbd_edpt_open(audio->rhport, desc_ep)); + } + + foundEPs += 1; + } + p_desc = tu_desc_next(p_desc); + } + break; + } + p_desc = tu_desc_next(p_desc); + } + + return true; + +} +#endif + //--------------------------------------------------------------------+ // USBD Driver API //--------------------------------------------------------------------+ @@ -1484,6 +1532,10 @@ uint16_t audiod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin // This is all we need so far - the EPs are setup by a later set_interface request (as per UAC2 specification) uint16_t drv_len = _audiod_fct[i].desc_length - TUD_AUDIO_DESC_IAD_LEN; // - TUD_AUDIO_DESC_IAD_LEN since tinyUSB already handles the IAD descriptor +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP + TU_ASSERT(set_int_ctr_number(&_audiod_fct[i])); +#endif + return drv_len; } diff --git a/src/class/audio/audio_device.h b/src/class/audio/audio_device.h index 0ef100fa4..0c394d235 100644 --- a/src/class/audio/audio_device.h +++ b/src/class/audio/audio_device.h @@ -191,9 +191,19 @@ #define CFG_TUD_AUDIO_ENABLE_FEEDBACK_FORMAT_CORRECTION 0 // 0 or 1 #endif +// Enable/disable interrupt EP (required for notifying host of control changes) +#ifndef CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP +#define CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP 0 // Feedback - 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) +// Audio interrupt control - if required - 6 Bytes according to UAC 2 specification (p. 74) +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP +#define CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN 6 +#else +#define CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN 0 +#endif #endif #ifndef CFG_TUD_AUDIO_INT_CTR_EP_IN_SW_BUFFER_SIZE @@ -388,7 +398,7 @@ uint16_t tud_audio_n_write_support_ff (uint8_t func_id, uint8_t ff_i tu_fifo_t* tud_audio_n_get_tx_support_ff (uint8_t func_id, uint8_t ff_idx); #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP uint16_t tud_audio_int_ctr_n_write (uint8_t func_id, uint8_t const* buffer, uint16_t len); #endif @@ -431,7 +441,7 @@ static inline tu_fifo_t* tud_audio_get_tx_support_ff (uint8_t ff_idx); // INT CTR API -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP static inline uint16_t tud_audio_int_ctr_write (uint8_t const* buffer, uint16_t len); #endif @@ -531,7 +541,33 @@ TU_ATTR_WEAK TU_ATTR_FAST_FUNC void tud_audio_feedback_interval_isr(uint8_t func #endif // CFG_TUD_AUDIO_ENABLE_EP_OUT && CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP +// UAC2 ยง9.6 +// Structure of "interrupt data message" +typedef struct TU_ATTR_PACKED +{ + uint8_t bInfo; + uint8_t bAttribute; + union TU_ATTR_PACKED + { + uint16_t wValue; + struct TU_ATTR_PACKED + { + uint8_t wValue_cn_or_mcn; + uint8_t wValue_cs; + }; + }; + union TU_ATTR_PACKED + { + uint16_t wIndex; + struct TU_ATTR_PACKED + { + uint8_t wIndex_ep_or_int; + uint8_t wIndex_entity_id; + }; + }; +} audio_status_update_t; + TU_ATTR_WEAK bool tud_audio_int_ctr_done_cb(uint8_t rhport, uint16_t n_bytes_copied); #endif @@ -663,7 +699,7 @@ static inline tu_fifo_t* tud_audio_get_tx_support_ff(uint8_t ff_idx) #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP static inline uint16_t tud_audio_int_ctr_write(uint8_t const* buffer, uint16_t len) { return tud_audio_int_ctr_n_write(0, buffer, len); |