diff options
Diffstat (limited to 'src/class/cdc/cdc_host.c')
| -rw-r--r-- | src/class/cdc/cdc_host.c | 668 |
1 files changed, 339 insertions, 329 deletions
diff --git a/src/class/cdc/cdc_host.c b/src/class/cdc/cdc_host.c index beef03eff..4441222c8 100644 --- a/src/class/cdc/cdc_host.c +++ b/src/class/cdc/cdc_host.c @@ -29,6 +29,8 @@ #include "tusb_option.h" +#include <stdint.h> + #if (CFG_TUH_ENABLED && CFG_TUH_CDC) #include "host/usbh.h" @@ -41,13 +43,14 @@ #include "serial/pl2303.h" // Level where CFG_TUSB_DEBUG must be at least for this driver is logged -#ifndef CFG_TUH_CDC_LOG_LEVEL - #define CFG_TUH_CDC_LOG_LEVEL 2 -#endif + #ifndef CFG_TUH_CDC_LOG_LEVEL + #define CFG_TUH_CDC_LOG_LEVEL 2 + #endif -#define TU_LOG_DRV(...) TU_LOG(CFG_TUH_CDC_LOG_LEVEL, __VA_ARGS__) -#define TU_LOG_CDC(_cdc, _format, ...) TU_LOG_DRV("[:%u:%u] CDCh %s " _format "\r\n", _cdc->daddr, _cdc->bInterfaceNumber, \ - serial_drivers[_cdc->serial_drid].name, ##__VA_ARGS__) + #define TU_LOG_DRV(...) TU_LOG(CFG_TUH_CDC_LOG_LEVEL, __VA_ARGS__) + #define TU_LOG_CDC(_cdc, _format, ...) \ + TU_LOG_DRV("[:%u:%u] CDCh %s " _format "\r\n", _cdc->daddr, _cdc->bInterfaceNumber, \ + serial_drivers[_cdc->serial_drid].name, ##__VA_ARGS__) //--------------------------------------------------------------------+ // Host CDC Interface @@ -96,6 +99,7 @@ typedef struct { typedef struct { TUH_EPBUF_DEF(tx, CFG_TUH_CDC_TX_EPSIZE); TUH_EPBUF_DEF(rx, CFG_TUH_CDC_RX_EPSIZE); + TUH_EPBUF_DEF(ctrl, 8); } cdch_epbuf_t; static cdch_interface_t cdch_data[CFG_TUH_CDC]; @@ -113,63 +117,59 @@ static void cdch_set_line_coding_stage1_baudrate_complete(tuh_xfer_t *xfer); static void cdch_set_line_coding_stage2_data_format_complete(tuh_xfer_t *xfer); //------------- ACM prototypes -------------// -static bool acm_open(uint8_t daddr, tusb_desc_interface_t const * itf_desc, uint16_t max_len); -static bool acm_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); -static void acm_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); - -static bool acm_set_line_coding(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool acm_set_control_line_state(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static uint16_t acm_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len); +static bool acm_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static void acm_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static bool acm_set_line_coding(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool acm_set_control_line_state(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -//------------- FTDI prototypes -------------// -#if CFG_TUH_CDC_FTDI + //------------- FTDI prototypes -------------// + #if CFG_TUH_CDC_FTDI static uint16_t const ftdi_vid_pid_list[][2] = {CFG_TUH_CDC_FTDI_VID_PID_LIST}; -static bool ftdi_open(uint8_t daddr, const tusb_desc_interface_t * itf_desc, uint16_t max_len); -static bool ftdi_proccess_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); -static void ftdi_internal_control_complete(cdch_interface_t* p_cdc, tuh_xfer_t *xfer); -static bool ftdi_set_baudrate(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool ftdi_set_data_format(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool ftdi_set_modem_ctrl(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -#endif +static uint16_t ftdi_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len); +static bool ftdi_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static void ftdi_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static bool ftdi_set_baudrate(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool ftdi_set_data_format(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool ftdi_set_modem_ctrl(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + #endif -//------------- CP210X prototypes -------------// -#if CFG_TUH_CDC_CP210X + //------------- CP210X prototypes -------------// + #if CFG_TUH_CDC_CP210X static uint16_t const cp210x_vid_pid_list[][2] = {CFG_TUH_CDC_CP210X_VID_PID_LIST}; -static bool cp210x_open(uint8_t daddr, tusb_desc_interface_t const * itf_desc, uint16_t max_len); -static bool cp210x_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); -static void cp210x_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); - -static bool cp210x_set_baudrate(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool cp210x_set_data_format(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool cp210x_set_modem_ctrl(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -#endif +static uint16_t cp210x_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len); +static bool cp210x_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static void cp210x_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static bool cp210x_set_baudrate(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool cp210x_set_data_format(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool cp210x_set_modem_ctrl(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + #endif -//------------- CH34x prototypes -------------// -#if CFG_TUH_CDC_CH34X + //------------- CH34x prototypes -------------// + #if CFG_TUH_CDC_CH34X static uint16_t const ch34x_vid_pid_list[][2] = {CFG_TUH_CDC_CH34X_VID_PID_LIST}; -static bool ch34x_open(uint8_t daddr, tusb_desc_interface_t const * itf_desc, uint16_t max_len); -static bool ch34x_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); -static void ch34x_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); - -static bool ch34x_set_baudrate(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool ch34x_set_data_format(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool ch34x_set_modem_ctrl(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -#endif +static uint16_t ch34x_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len); +static bool ch34x_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static void ch34x_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static bool ch34x_set_baudrate(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool ch34x_set_data_format(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool ch34x_set_modem_ctrl(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + #endif -//------------- PL2303 prototypes -------------// -#if CFG_TUH_CDC_PL2303 + //------------- PL2303 prototypes -------------// + #if CFG_TUH_CDC_PL2303 static uint16_t const pl2303_vid_pid_list[][2] = {CFG_TUH_CDC_PL2303_VID_PID_LIST}; static const pl2303_type_data_t pl2303_type_data[PL2303_TYPE_COUNT] = {PL2303_TYPE_DATA}; -static bool pl2303_open(uint8_t daddr, tusb_desc_interface_t const * itf_desc, uint16_t max_len); -static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); -static void pl2303_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); - -static bool pl2303_set_line_coding(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -static bool pl2303_set_modem_ctrl(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); -#endif +static uint16_t pl2303_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len); +static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static void pl2303_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); +static bool pl2303_set_line_coding(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); +static bool pl2303_set_modem_ctrl(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + #endif //------------- Common -------------// enum { @@ -197,11 +197,12 @@ enum { typedef bool (*serial_driver_func_t)(cdch_interface_t * p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data); typedef struct { - uint16_t const (*vid_pid_list)[2]; - uint16_t const vid_pid_count; - bool (*const open)(uint8_t daddr, const tusb_desc_interface_t * itf_desc, uint16_t max_len); - bool (*const process_set_config)(cdch_interface_t * p_cdc, tuh_xfer_t * xfer); - void (*const request_complete)(cdch_interface_t * p_cdc, tuh_xfer_t * xfer); // internal request complete handler to update line state + const uint16_t (*vid_pid_list)[2]; + const uint16_t vid_pid_count; + uint16_t (*const open)(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len); + bool (*const process_set_config)(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); + // internal request complete handler to update line state + void (*const request_complete)(cdch_interface_t *p_cdc, tuh_xfer_t *xfer); serial_driver_func_t set_control_line_state, set_baudrate, set_data_format, set_line_coding; @@ -216,88 +217,91 @@ typedef struct { #define DRIVER_NAME_DECLARE(_str) #endif +// clang-format off // Note driver list must be in the same order as SERIAL_DRIVER enum static const cdch_serial_driver_t serial_drivers[] = { { - .vid_pid_list = NULL, - .vid_pid_count = 0, - .open = acm_open, - .process_set_config = acm_process_set_config, - .request_complete = acm_internal_control_complete, - .set_control_line_state = acm_set_control_line_state, - .set_baudrate = acm_set_line_coding, - .set_data_format = acm_set_line_coding, - .set_line_coding = acm_set_line_coding, - DRIVER_NAME_DECLARE("ACM") + .vid_pid_list = NULL, + .vid_pid_count = 0, + .open = acm_open, + .process_set_config = acm_process_set_config, + .request_complete = acm_internal_control_complete, + .set_control_line_state = acm_set_control_line_state, + .set_baudrate = acm_set_line_coding, + .set_data_format = acm_set_line_coding, + .set_line_coding = acm_set_line_coding, + DRIVER_NAME_DECLARE("ACM") }, #if CFG_TUH_CDC_FTDI { - .vid_pid_list = ftdi_vid_pid_list, - .vid_pid_count = TU_ARRAY_SIZE(ftdi_vid_pid_list), - .open = ftdi_open, - .process_set_config = ftdi_proccess_set_config, - .request_complete = ftdi_internal_control_complete, - .set_control_line_state = ftdi_set_modem_ctrl, - .set_baudrate = ftdi_set_baudrate, - .set_data_format = ftdi_set_data_format, - .set_line_coding = NULL, // 2 stage set line coding - DRIVER_NAME_DECLARE("FTDI") + .vid_pid_list = ftdi_vid_pid_list, + .vid_pid_count = TU_ARRAY_SIZE(ftdi_vid_pid_list), + .open = ftdi_open, + .process_set_config = ftdi_process_set_config, + .request_complete = ftdi_internal_control_complete, + .set_control_line_state = ftdi_set_modem_ctrl, + .set_baudrate = ftdi_set_baudrate, + .set_data_format = ftdi_set_data_format, + .set_line_coding = NULL, // 2 stage set line coding + DRIVER_NAME_DECLARE("FTDI") }, #endif #if CFG_TUH_CDC_CP210X { - .vid_pid_list = cp210x_vid_pid_list, - .vid_pid_count = TU_ARRAY_SIZE(cp210x_vid_pid_list), - .open = cp210x_open, - .process_set_config = cp210x_process_set_config, - .request_complete = cp210x_internal_control_complete, - .set_control_line_state = cp210x_set_modem_ctrl, - .set_baudrate = cp210x_set_baudrate, - .set_data_format = cp210x_set_data_format, - .set_line_coding = NULL, // 2 stage set line coding - DRIVER_NAME_DECLARE("CP210x") + .vid_pid_list = cp210x_vid_pid_list, + .vid_pid_count = TU_ARRAY_SIZE(cp210x_vid_pid_list), + .open = cp210x_open, + .process_set_config = cp210x_process_set_config, + .request_complete = cp210x_internal_control_complete, + .set_control_line_state = cp210x_set_modem_ctrl, + .set_baudrate = cp210x_set_baudrate, + .set_data_format = cp210x_set_data_format, + .set_line_coding = NULL, // 2 stage set line coding + DRIVER_NAME_DECLARE("CP210x") }, #endif #if CFG_TUH_CDC_CH34X { - .vid_pid_list = ch34x_vid_pid_list, - .vid_pid_count = TU_ARRAY_SIZE(ch34x_vid_pid_list), - .open = ch34x_open, - .process_set_config = ch34x_process_set_config, - .request_complete = ch34x_internal_control_complete, + .vid_pid_list = ch34x_vid_pid_list, + .vid_pid_count = TU_ARRAY_SIZE(ch34x_vid_pid_list), + .open = ch34x_open, + .process_set_config = ch34x_process_set_config, + .request_complete = ch34x_internal_control_complete, - .set_control_line_state = ch34x_set_modem_ctrl, - .set_baudrate = ch34x_set_baudrate, - .set_data_format = ch34x_set_data_format, - .set_line_coding = NULL, // 2 stage set line coding - DRIVER_NAME_DECLARE("CH34x") + .set_control_line_state = ch34x_set_modem_ctrl, + .set_baudrate = ch34x_set_baudrate, + .set_data_format = ch34x_set_data_format, + .set_line_coding = NULL, // 2 stage set line coding + DRIVER_NAME_DECLARE("CH34x") }, #endif #if CFG_TUH_CDC_PL2303 { - .vid_pid_list = pl2303_vid_pid_list, - .vid_pid_count = TU_ARRAY_SIZE(pl2303_vid_pid_list), - .open = pl2303_open, - .process_set_config = pl2303_process_set_config, - .request_complete = pl2303_internal_control_complete, - .set_control_line_state = pl2303_set_modem_ctrl, - .set_baudrate = pl2303_set_line_coding, - .set_data_format = pl2303_set_line_coding, - .set_line_coding = pl2303_set_line_coding, - DRIVER_NAME_DECLARE("PL2303") + .vid_pid_list = pl2303_vid_pid_list, + .vid_pid_count = TU_ARRAY_SIZE(pl2303_vid_pid_list), + .open = pl2303_open, + .process_set_config = pl2303_process_set_config, + .request_complete = pl2303_internal_control_complete, + .set_control_line_state = pl2303_set_modem_ctrl, + .set_baudrate = pl2303_set_line_coding, + .set_data_format = pl2303_set_line_coding, + .set_line_coding = pl2303_set_line_coding, + DRIVER_NAME_DECLARE("PL2303") } #endif }; +// clang-format on TU_VERIFY_STATIC(TU_ARRAY_SIZE(serial_drivers) == SERIAL_DRIVER_COUNT, "Serial driver count mismatch"); //--------------------------------------------------------------------+ // INTERNAL OBJECT & FUNCTION DECLARATION //--------------------------------------------------------------------+ +static bool open_ep_stream_pair(cdch_interface_t *p_cdc, const tusb_desc_endpoint_t *desc_ep); TU_ATTR_ALWAYS_INLINE static inline cdch_interface_t * get_itf(uint8_t idx) { TU_ASSERT(idx < CFG_TUH_CDC, NULL); @@ -364,7 +368,7 @@ static cdch_interface_t* get_itf_by_xfer(const tuh_xfer_t * xfer) { #endif default: - break; + break; // unknown driver } } } @@ -389,8 +393,6 @@ static cdch_interface_t * make_new_itf(uint8_t daddr, tusb_desc_interface_t cons return NULL; } -static bool open_ep_stream_pair(cdch_interface_t * p_cdc , tusb_desc_endpoint_t const *desc_ep); - //--------------------------------------------------------------------+ // Weak stubs: invoked if no strong implementation is available //--------------------------------------------------------------------+ @@ -471,25 +473,26 @@ bool tuh_cdc_get_line_coding_local(uint8_t idx, cdc_line_coding_t * line_coding) uint32_t tuh_cdc_write(uint8_t idx, void const * buffer, uint32_t bufsize) { cdch_interface_t * p_cdc = get_itf(idx); TU_VERIFY(p_cdc); - return tu_edpt_stream_write(p_cdc->daddr, &p_cdc->stream.tx, buffer, bufsize); + return tu_edpt_stream_write(&p_cdc->stream.tx, buffer, bufsize); } uint32_t tuh_cdc_write_flush(uint8_t idx) { cdch_interface_t * p_cdc = get_itf(idx); TU_VERIFY(p_cdc); - return tu_edpt_stream_write_xfer(p_cdc->daddr, &p_cdc->stream.tx); + return tu_edpt_stream_write_xfer(&p_cdc->stream.tx); } bool tuh_cdc_write_clear(uint8_t idx) { cdch_interface_t * p_cdc = get_itf(idx); TU_VERIFY(p_cdc); - return tu_edpt_stream_clear(&p_cdc->stream.tx); + tu_edpt_stream_clear(&p_cdc->stream.tx); + return true; } uint32_t tuh_cdc_write_available(uint8_t idx) { cdch_interface_t * p_cdc = get_itf(idx); TU_VERIFY(p_cdc); - return tu_edpt_stream_write_available(p_cdc->daddr, &p_cdc->stream.tx); + return tu_edpt_stream_write_available(&p_cdc->stream.tx); } //--------------------------------------------------------------------+ @@ -499,7 +502,7 @@ uint32_t tuh_cdc_write_available(uint8_t idx) { uint32_t tuh_cdc_read (uint8_t idx, void * buffer, uint32_t bufsize) { cdch_interface_t * p_cdc = get_itf(idx); TU_VERIFY(p_cdc); - return tu_edpt_stream_read(p_cdc->daddr, &p_cdc->stream.rx, buffer, bufsize); + return tu_edpt_stream_read(&p_cdc->stream.rx, buffer, bufsize); } uint32_t tuh_cdc_read_available(uint8_t idx) { @@ -518,9 +521,9 @@ bool tuh_cdc_read_clear (uint8_t idx) { cdch_interface_t * p_cdc = get_itf(idx); TU_VERIFY(p_cdc); - bool ret = tu_edpt_stream_clear(&p_cdc->stream.rx); - tu_edpt_stream_read_xfer(p_cdc->daddr, &p_cdc->stream.rx); - return ret; + tu_edpt_stream_clear(&p_cdc->stream.rx); + (void)tu_edpt_stream_read_xfer(&p_cdc->stream.rx); + return true; } //--------------------------------------------------------------------+ @@ -602,7 +605,7 @@ bool tuh_cdc_set_line_coding(uint8_t idx, cdc_line_coding_t const *line_coding, p_cdc->requested_line.coding = *line_coding; p_cdc->user_complete_cb = complete_cb; - if (driver->set_line_coding) { + if (driver->set_line_coding != NULL) { // driver support set_line_coding request TU_VERIFY(driver->set_line_coding(p_cdc, complete_cb ? cdch_internal_control_complete : NULL, user_data)); @@ -611,7 +614,7 @@ bool tuh_cdc_set_line_coding(uint8_t idx, cdc_line_coding_t const *line_coding, } } else { // driver does not support set_line_coding and need 2 stage to set baudrate and data format separately - if (complete_cb) { + if (complete_cb != NULL) { // non-blocking TU_VERIFY(driver->set_baudrate(p_cdc, cdch_set_line_coding_stage1_baudrate_complete, user_data)); } else { @@ -619,7 +622,7 @@ bool tuh_cdc_set_line_coding(uint8_t idx, cdc_line_coding_t const *line_coding, xfer_result_t result = XFER_RESULT_INVALID; TU_VERIFY(driver->set_baudrate(p_cdc, NULL, (uintptr_t) &result)); - if (user_data) { + if (user_data != 0) { *((xfer_result_t *) user_data) = result; } TU_VERIFY(result == XFER_RESULT_SUCCESS); @@ -627,7 +630,7 @@ bool tuh_cdc_set_line_coding(uint8_t idx, cdc_line_coding_t const *line_coding, result = XFER_RESULT_INVALID; TU_VERIFY(driver->set_data_format(p_cdc, NULL, (uintptr_t) &result)); - if (user_data) { + if (user_data != 0) { *((xfer_result_t *) user_data) = result; } TU_VERIFY(result == XFER_RESULT_SUCCESS); @@ -648,13 +651,10 @@ bool cdch_init(void) { for (size_t i = 0; i < CFG_TUH_CDC; i++) { cdch_interface_t *p_cdc = &cdch_data[i]; cdch_epbuf_t *epbuf = &cdch_epbuf[i]; - tu_edpt_stream_init(&p_cdc->stream.tx, true, true, false, - p_cdc->stream.tx_ff_buf, CFG_TUH_CDC_TX_BUFSIZE, - epbuf->tx, CFG_TUH_CDC_TX_EPSIZE); - - tu_edpt_stream_init(&p_cdc->stream.rx, true, false, false, - p_cdc->stream.rx_ff_buf, CFG_TUH_CDC_RX_BUFSIZE, - epbuf->rx, CFG_TUH_CDC_RX_EPSIZE); + TU_ASSERT(tu_edpt_stream_init(&p_cdc->stream.tx, true, true, false, p_cdc->stream.tx_ff_buf, + CFG_TUH_CDC_TX_BUFSIZE, epbuf->tx)); + TU_ASSERT(tu_edpt_stream_init(&p_cdc->stream.rx, true, false, false, p_cdc->stream.rx_ff_buf, + CFG_TUH_CDC_RX_BUFSIZE, epbuf->rx)); } return true; @@ -663,8 +663,8 @@ bool cdch_init(void) { bool cdch_deinit(void) { for (size_t i = 0; i < CFG_TUH_CDC; i++) { cdch_interface_t *p_cdc = &cdch_data[i]; - tu_edpt_stream_deinit(&p_cdc->stream.tx); - tu_edpt_stream_deinit(&p_cdc->stream.rx); + (void)tu_edpt_stream_deinit(&p_cdc->stream.tx); + (void)tu_edpt_stream_deinit(&p_cdc->stream.rx); } return true; } @@ -674,11 +674,9 @@ void cdch_close(uint8_t daddr) { cdch_interface_t *p_cdc = &cdch_data[idx]; if (p_cdc->daddr == daddr) { TU_LOG_CDC(p_cdc, "close"); + tuh_cdc_umount_cb(idx); // invoke callback - // Invoke application callback - tuh_cdc_umount_cb(idx); - - p_cdc->daddr = 0; + p_cdc->daddr = 0; p_cdc->bInterfaceNumber = 0; p_cdc->mounted = false; tu_edpt_stream_close(&p_cdc->stream.tx); @@ -696,13 +694,12 @@ bool cdch_xfer_cb(uint8_t daddr, uint8_t ep_addr, xfer_result_t event, uint32_t TU_ASSERT(p_cdc); if (ep_addr == p_cdc->stream.tx.ep_addr) { - // invoke tx complete callback to possibly refill tx fifo - tuh_cdc_tx_complete_cb(idx); + tuh_cdc_tx_complete_cb(idx); // invoke transmit complete callback - if (0 == tu_edpt_stream_write_xfer(daddr, &p_cdc->stream.tx)) { + if (0 == tu_edpt_stream_write_xfer(&p_cdc->stream.tx)) { // If there is no data left, a ZLP should be sent if: // - xferred_bytes is multiple of EP Packet size and not zero - tu_edpt_stream_write_zlp_if_needed(daddr, &p_cdc->stream.tx, xferred_bytes); + (void)tu_edpt_stream_write_zlp_if_needed(&p_cdc->stream.tx, xferred_bytes); } } else if (ep_addr == p_cdc->stream.rx.ep_addr) { #if CFG_TUH_CDC_FTDI @@ -718,16 +715,15 @@ bool cdch_xfer_cb(uint8_t daddr, uint8_t ep_addr, xfer_result_t event, uint32_t #endif { tu_edpt_stream_read_xfer_complete(&p_cdc->stream.rx, xferred_bytes); - tuh_cdc_rx_cb(idx); // invoke receive callback } // prepare for next transfer if needed - tu_edpt_stream_read_xfer(daddr, &p_cdc->stream.rx); + tu_edpt_stream_read_xfer(&p_cdc->stream.rx); } else if (ep_addr == p_cdc->ep_notif) { // TODO handle notification endpoint } else { - TU_ASSERT(false); + return false; } return true; @@ -736,27 +732,23 @@ bool cdch_xfer_cb(uint8_t daddr, uint8_t ep_addr, xfer_result_t event, uint32_t //--------------------------------------------------------------------+ // Enumeration //--------------------------------------------------------------------+ - static bool open_ep_stream_pair(cdch_interface_t *p_cdc, tusb_desc_endpoint_t const *desc_ep) { for (size_t i = 0; i < 2; i++) { - TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType && - TUSB_XFER_BULK == desc_ep->bmAttributes.xfer); + TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType && TUSB_XFER_BULK == desc_ep->bmAttributes.xfer, 0); TU_ASSERT(tuh_edpt_open(p_cdc->daddr, desc_ep)); + const uint8_t ep_dir = tu_edpt_dir(desc_ep->bEndpointAddress); + tu_edpt_stream_t *stream = (ep_dir == TUSB_DIR_IN) ? &p_cdc->stream.rx : &p_cdc->stream.tx; + tu_edpt_stream_open(stream, p_cdc->daddr, desc_ep, tu_edpt_packet_size(desc_ep)); + tu_edpt_stream_clear(stream); - if (tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN) { - tu_edpt_stream_open(&p_cdc->stream.rx, desc_ep); - } else { - tu_edpt_stream_open(&p_cdc->stream.tx, desc_ep); - } - - desc_ep = (tusb_desc_endpoint_t const *) tu_desc_next(desc_ep); + desc_ep = (const tusb_desc_endpoint_t *)tu_desc_next(desc_ep); } return true; } -bool cdch_open(uint8_t rhport, uint8_t daddr, tusb_desc_interface_t const *itf_desc, uint16_t max_len) { - (void) rhport; +uint16_t cdch_open(uint8_t rhport, uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len) { + (void)rhport; // For CDC: only support ACM subclass // Note: Protocol 0xFF can be RNDIS device if (TUSB_CLASS_CDC == itf_desc->bInterfaceClass && @@ -765,52 +757,36 @@ bool cdch_open(uint8_t rhport, uint8_t daddr, tusb_desc_interface_t const *itf_d } else if (SERIAL_DRIVER_COUNT > 1 && TUSB_CLASS_VENDOR_SPECIFIC == itf_desc->bInterfaceClass) { uint16_t vid, pid; - TU_VERIFY(tuh_vid_pid_get(daddr, &vid, &pid)); + TU_VERIFY(tuh_vid_pid_get(daddr, &vid, &pid), 0); - for (size_t dr = 1; dr < SERIAL_DRIVER_COUNT; dr++) { - const cdch_serial_driver_t *driver = &serial_drivers[dr]; + for (size_t drv = 1; drv < SERIAL_DRIVER_COUNT; drv++) { + const cdch_serial_driver_t *driver = &serial_drivers[drv]; for (size_t i = 0; i < driver->vid_pid_count; i++) { if (driver->vid_pid_list[i][0] == vid && driver->vid_pid_list[i][1] == pid) { - const bool ret = driver->open(daddr, itf_desc, max_len); - TU_LOG_DRV("[:%u:%u] CDCh %s open %s\r\n", daddr, itf_desc->bInterfaceNumber, driver->name, ret ? "OK" : "FAILED"); - return ret; + const uint16_t drv_len = driver->open(daddr, itf_desc, max_len); + TU_LOG_DRV("[:%u:%u] CDCh %s open %s\r\n", daddr, itf_desc->bInterfaceNumber, driver->name, + drv_len > 0 ? "OK" : "FAILED"); + return drv_len; } } } + } else { + // not supported class } - return false; -} - -bool cdch_set_config(uint8_t daddr, uint8_t itf_num) { - tusb_control_request_t request; - request.wIndex = tu_htole16((uint16_t) itf_num); - uint8_t const idx = tuh_cdc_itf_get_index(daddr, itf_num); - cdch_interface_t *p_cdc = get_itf(idx); - TU_ASSERT(p_cdc && p_cdc->serial_drid < SERIAL_DRIVER_COUNT); - TU_LOG_CDC(p_cdc, "set config"); - - // fake transfer to kick-off process_set_config() - tuh_xfer_t xfer; - xfer.daddr = daddr; - xfer.result = XFER_RESULT_SUCCESS; - xfer.setup = &request; - xfer.user_data = 0; // initial state 0 - cdch_process_set_config(&xfer); - - return true; + return 0; } static void set_config_complete(cdch_interface_t *p_cdc, bool success) { if (success) { const uint8_t idx = get_idx_by_ptr(p_cdc); - p_cdc->mounted = true; + p_cdc->mounted = true; tuh_cdc_mount_cb(idx); // Prepare for incoming data - tu_edpt_stream_read_xfer(p_cdc->daddr, &p_cdc->stream.rx); + tu_edpt_stream_read_xfer(&p_cdc->stream.rx); } else { // clear the interface entry - p_cdc->daddr = 0; + p_cdc->daddr = 0; p_cdc->bInterfaceNumber = 0; } @@ -819,6 +795,33 @@ static void set_config_complete(cdch_interface_t *p_cdc, bool success) { usbh_driver_set_config_complete(p_cdc->daddr, p_cdc->bInterfaceNumber + itf_offset); } +bool cdch_set_config(uint8_t daddr, uint8_t itf_num) { + const uint8_t idx = tuh_cdc_itf_get_index(daddr, itf_num); + cdch_interface_t *p_cdc = get_itf(idx); + TU_ASSERT(p_cdc && p_cdc->serial_drid < SERIAL_DRIVER_COUNT); + TU_LOG_CDC(p_cdc, "set config"); + + // fake transfer to kick-off process_set_config() + tusb_control_request_t request; + request.wIndex = tu_htole16((uint16_t)itf_num); + + tuh_xfer_t xfer; + xfer.daddr = daddr; + xfer.ep_addr = 0; + xfer.result = XFER_RESULT_SUCCESS; + xfer.setup = &request; + xfer.complete_cb = NULL; + xfer.buffer = NULL; + xfer.user_data = 0; // initial state 0 + + const cdch_serial_driver_t *driver = &serial_drivers[p_cdc->serial_drid]; + if (!driver->process_set_config(p_cdc, &xfer)) { + set_config_complete(p_cdc, false); + } + + return true; +} + static void cdch_process_set_config(tuh_xfer_t *xfer) { cdch_interface_t *p_cdc = get_itf_by_xfer(xfer); TU_ASSERT(p_cdc && p_cdc->serial_drid < SERIAL_DRIVER_COUNT,); @@ -830,13 +833,16 @@ static void cdch_process_set_config(tuh_xfer_t *xfer) { } } +// return false if there is no active transfer static bool set_line_state_on_enum(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) { enum { ENUM_SET_LINE_CODING = 0, ENUM_SET_LINE_CONTROL, ENUM_SET_LINE_COMPLETE, }; + #ifdef CFG_TUH_CDC_LINE_CODING_ON_ENUM const uint8_t idx = get_idx_by_ptr(p_cdc); + #endif const uintptr_t state = xfer->user_data; switch (state) { @@ -894,7 +900,7 @@ static void cdch_internal_control_complete(tuh_xfer_t *xfer) { // Invoke application callback xfer->complete_cb = p_cdc->user_complete_cb; - if (xfer->complete_cb) { + if (xfer->complete_cb != NULL) { xfer->complete_cb(xfer); } } @@ -910,7 +916,7 @@ static void cdch_set_line_coding_stage1_baudrate_complete(tuh_xfer_t *xfer) { TU_ASSERT(driver->set_data_format(p_cdc, cdch_set_line_coding_stage2_data_format_complete, xfer->user_data),); } else { xfer->complete_cb = p_cdc->user_complete_cb; - if (xfer->complete_cb) { + if (xfer->complete_cb != NULL) { xfer->complete_cb(xfer); } } @@ -926,7 +932,7 @@ static void cdch_set_line_coding_stage2_data_format_complete(tuh_xfer_t *xfer) { } xfer->complete_cb = p_cdc->user_complete_cb; - if (xfer->complete_cb) { + if (xfer->complete_cb != NULL) { xfer->complete_cb(xfer); } } @@ -950,12 +956,12 @@ static void acm_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t *x break; default: - break; + break; // unknown request } } static bool acm_set_control_line_state(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { - TU_VERIFY(p_cdc->acm.capability.support_line_request); + TU_VERIFY(p_cdc->acm.capability.support_line_request != 0); const tusb_control_request_t request = { .bmRequestType_bit = { @@ -982,7 +988,7 @@ static bool acm_set_control_line_state(cdch_interface_t *p_cdc, tuh_xfer_cb_t co } static bool acm_set_line_coding(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { - TU_VERIFY(p_cdc->acm.capability.support_line_request); + TU_VERIFY(p_cdc->acm.capability.support_line_request != 0); TU_VERIFY((p_cdc->requested_line.coding.data_bits >= 5 && p_cdc->requested_line.coding.data_bits <= 8) || p_cdc->requested_line.coding.data_bits == 16); @@ -998,15 +1004,16 @@ static bool acm_set_line_coding(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_ .wLength = tu_htole16((uint16_t) sizeof(cdc_line_coding_t)) }; - // use usbh enum buf to hold line coding since user line_coding variable does not live long enough - uint8_t *enum_buf = usbh_get_enum_buf(); - memcpy(enum_buf, &p_cdc->requested_line.coding, sizeof(cdc_line_coding_t)); + // use local ctrl buf to hold line coding since user line_coding variable does not live long enough + uint8_t const idx = get_idx_by_ptr(p_cdc); + uint8_t *ctrl_buf = cdch_epbuf[idx].ctrl; + memcpy(ctrl_buf, &p_cdc->requested_line.coding, sizeof(cdc_line_coding_t)); tuh_xfer_t xfer = { .daddr = p_cdc->daddr, .ep_addr = 0, .setup = &request, - .buffer = enum_buf, + .buffer = ctrl_buf, .complete_cb = complete_cb, .user_data = user_data }; @@ -1019,19 +1026,19 @@ enum { CONFIG_ACM_COMPLETE = 0 }; -static bool acm_open(uint8_t daddr, tusb_desc_interface_t const *itf_desc, uint16_t max_len) { - uint8_t const *p_desc_end = ((uint8_t const *) itf_desc) + max_len; +static uint16_t acm_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len) { + const uint8_t *p_desc = (const uint8_t *)itf_desc; + const uint8_t *desc_end = p_desc + max_len; cdch_interface_t *p_cdc = make_new_itf(daddr, itf_desc); - TU_VERIFY(p_cdc); - + TU_VERIFY(p_cdc, 0); p_cdc->serial_drid = SERIAL_DRIVER_ACM; //------------- Control Interface -------------// - uint8_t const *p_desc = tu_desc_next(itf_desc); + p_desc = tu_desc_next(p_desc); // Communication Functional Descriptors - while ((p_desc < p_desc_end) && (TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc))) { + while ((p_desc < desc_end) && (TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc))) { if (CDC_FUNC_DESC_ABSTRACT_CONTROL_MANAGEMENT == cdc_functional_desc_typeof(p_desc)) { // save ACM bmCapabilities p_cdc->acm.capability = ((cdc_desc_func_acm_t const *) p_desc)->bmCapabilities; @@ -1042,26 +1049,27 @@ static bool acm_open(uint8_t daddr, tusb_desc_interface_t const *itf_desc, uint1 // Open notification endpoint of control interface if any if (itf_desc->bNumEndpoints == 1) { - TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(p_desc)); - tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) p_desc; - - TU_ASSERT(tuh_edpt_open(daddr, desc_ep)); + TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(p_desc), 0); + const tusb_desc_endpoint_t *desc_ep = (const tusb_desc_endpoint_t *)p_desc; + TU_ASSERT(tuh_edpt_open(daddr, desc_ep), 0); p_cdc->ep_notif = desc_ep->bEndpointAddress; p_desc = tu_desc_next(p_desc); } //------------- Data Interface (if any) -------------// - if ((TUSB_DESC_INTERFACE == tu_desc_type(p_desc)) && - (TUSB_CLASS_CDC_DATA == ((tusb_desc_interface_t const *) p_desc)->bInterfaceClass)) { - // next to endpoint descriptor - p_desc = tu_desc_next(p_desc); + if (TUSB_DESC_INTERFACE == tu_desc_type(p_desc)) { + const tusb_desc_interface_t *data_itf = (const tusb_desc_interface_t *)p_desc; + if (data_itf->bInterfaceClass == TUSB_CLASS_CDC_DATA) { + p_desc = tu_desc_next(p_desc); // next to endpoint descriptor - // data endpoints expected to be in pairs - TU_ASSERT(open_ep_stream_pair(p_cdc, (tusb_desc_endpoint_t const *) p_desc)); + // data endpoints expected to be in pairs + TU_ASSERT(open_ep_stream_pair(p_cdc, (const tusb_desc_endpoint_t *)p_desc), 0); + p_desc += data_itf->bNumEndpoints * sizeof(tusb_desc_endpoint_t); + } } - return true; + return (uint16_t)((uintptr_t)p_desc - (uintptr_t)itf_desc); } static bool acm_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) { @@ -1136,7 +1144,6 @@ static inline bool ftdi_sio_reset(cdch_interface_t *p_cdc, tuh_xfer_cb_t complet // internal control complete to update state such as line state, line_coding static void ftdi_internal_control_complete(cdch_interface_t* p_cdc, tuh_xfer_t *xfer) { - TU_VERIFY(xfer->result == XFER_RESULT_SUCCESS,); const tusb_control_request_t * setup = xfer->setup; if (xfer->result == XFER_RESULT_SUCCESS) { if (setup->bRequest == FTDI_SIO_SET_MODEM_CTRL_REQUEST && @@ -1168,10 +1175,10 @@ static bool ftdi_set_data_format(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete static bool ftdi_set_baudrate(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { uint32_t index_value = ftdi_get_divisor(p_cdc); - TU_VERIFY(index_value); + TU_VERIFY(index_value != 0); uint16_t value = (uint16_t) index_value; uint16_t index = (uint16_t) (index_value >> 16); - if (p_cdc->ftdi.channel) { + if (p_cdc->ftdi.channel != 0) { index = (uint16_t) ((index << 8) | p_cdc->ftdi.channel); } @@ -1195,46 +1202,40 @@ enum { CONFIG_FTDI_COMPLETE }; -static bool ftdi_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len) { +static uint16_t ftdi_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len) { // FTDI Interface includes 1 vendor interface + 2 bulk endpoints TU_VERIFY(itf_desc->bInterfaceSubClass == 0xff && itf_desc->bInterfaceProtocol == 0xff && - itf_desc->bNumEndpoints == 2); - TU_VERIFY(sizeof(tusb_desc_interface_t) + 2 * sizeof(tusb_desc_endpoint_t) <= max_len); + itf_desc->bNumEndpoints == 2, + 0); + const uint16_t drv_len = + (uint16_t)(sizeof(tusb_desc_interface_t) + itf_desc->bNumEndpoints * sizeof(tusb_desc_endpoint_t)); + TU_VERIFY(drv_len <= max_len, 0); cdch_interface_t *p_cdc = make_new_itf(daddr, itf_desc); - TU_VERIFY(p_cdc); + TU_VERIFY(p_cdc, 0); p_cdc->serial_drid = SERIAL_DRIVER_FTDI; // endpoint pair - tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) tu_desc_next(itf_desc); + const tusb_desc_endpoint_t *desc_ep = (const tusb_desc_endpoint_t *)tu_desc_next(itf_desc); - /* - * NOTE: Some customers have programmed FT232R/FT245R devices - * with an endpoint size of 0 - not good. - */ - TU_ASSERT(desc_ep->wMaxPacketSize != 0); + /* NOTE: Some users have programmed FT232R/FT245R devices + * with an endpoint size of 0 !!! */ + TU_ASSERT(desc_ep->wMaxPacketSize != 0, 0); - // data endpoints expected to be in pairs - return open_ep_stream_pair(p_cdc, desc_ep); + TU_ASSERT(open_ep_stream_pair(p_cdc, desc_ep), 0); + + return drv_len; } -static bool ftdi_proccess_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) { +static bool ftdi_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) { TU_ASSERT(xfer->result == XFER_RESULT_SUCCESS); const uintptr_t state = xfer->user_data; switch (state) { // from here sequence overtaken from Linux Kernel function ftdi_port_probe() case CONFIG_FTDI_DETERMINE_TYPE: // determine type - if (p_cdc->bInterfaceNumber == 0) { - TU_ASSERT(ftdi_determine_type(p_cdc)); - } else { - // other interfaces have same type as interface 0 - uint8_t const idx_itf0 = tuh_cdc_itf_get_index(xfer->daddr, 0); - cdch_interface_t const *p_cdc_itf0 = get_itf(idx_itf0); - TU_ASSERT(p_cdc_itf0); - p_cdc->ftdi.chip_type = p_cdc_itf0->ftdi.chip_type; - } + TU_ASSERT(ftdi_determine_type(p_cdc)); TU_ATTR_FALLTHROUGH; case CONFIG_FTDI_WRITE_LATENCY: @@ -1365,7 +1366,7 @@ static uint32_t ftdi_232bm_baud_base_to_divisor(uint32_t baud, uint32_t base) { uint8_t divfrac[8] = {0, 3, 2, 4, 1, 5, 6, 7}; uint32_t divisor; /* divisor shifted 3 bits to the left */ - uint32_t divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud); + uint32_t divisor3 = tu_div_round_nearest(base, 2 * baud); divisor = divisor3 >> 3; divisor |= (uint32_t) divfrac[divisor3 & 0x7] << 14; /* Deal with special cases for highest baud rates. */ @@ -1373,6 +1374,8 @@ static uint32_t ftdi_232bm_baud_base_to_divisor(uint32_t baud, uint32_t base) { divisor = 0; } else if (divisor == 0x4001) /* 1.5 */ { divisor = 1; + } else { + // nothing to do } return divisor; } @@ -1387,7 +1390,7 @@ static uint32_t ftdi_2232h_baud_base_to_divisor(uint32_t baud, uint32_t base) { uint32_t divisor3; /* hi-speed baud rate is 10-bit sampling instead of 16-bit */ - divisor3 = DIV_ROUND_CLOSEST(8 * base, 10 * baud); + divisor3 = tu_div_round_nearest(8 * base, 10 * baud); divisor = divisor3 >> 3; divisor |= (uint32_t) divfrac[divisor3 & 0x7] << 14; @@ -1396,12 +1399,13 @@ static uint32_t ftdi_2232h_baud_base_to_divisor(uint32_t baud, uint32_t base) { divisor = 0; } else if (divisor == 0x4001) /* 1.5 */ { divisor = 1; + } else { + // nothing to do } - /* - * Set this bit to turn off a divide by 2.5 on baud rate generator + + /* Set this bit to turn off a divide by 2.5 on baud rate generator * This enables baud rates up to 12Mbaud but cannot reach below 1200 - * baud with this bit set - */ + * baud with this bit set */ divisor |= 0x00020000; return divisor; } @@ -1413,7 +1417,7 @@ static inline uint32_t ftdi_2232h_baud_to_divisor(uint32_t baud) { static inline uint32_t ftdi_get_divisor(cdch_interface_t *p_cdc) { uint32_t baud = p_cdc->requested_line.coding.bit_rate; uint32_t div_value = 0; - TU_VERIFY(baud); + TU_VERIFY(baud != 0); switch (p_cdc->ftdi.chip_type) { case FTDI_UNKNOWN: @@ -1489,7 +1493,7 @@ static inline uint32_t ftdi_get_divisor(cdch_interface_t *p_cdc) { //------------- Control Request -------------// static bool cp210x_set_request(cdch_interface_t * p_cdc, uint8_t command, uint16_t value, - uint8_t * buffer, uint16_t length, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + uint8_t const * buffer, uint16_t length, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { tusb_control_request_t const request = { .bmRequestType_bit = { .recipient = TUSB_REQ_RCPT_INTERFACE, @@ -1502,19 +1506,20 @@ static bool cp210x_set_request(cdch_interface_t * p_cdc, uint8_t command, uint16 .wLength = tu_htole16(length) }; - // use usbh enum buf since application variable does not live long enough - uint8_t * enum_buf = NULL; + // use local ctrl buf since application variable does not live long enough + uint8_t * ctrl_buf = NULL; if (buffer && length > 0) { - enum_buf = usbh_get_enum_buf(); - tu_memcpy_s(enum_buf, CFG_TUH_ENUMERATION_BUFSIZE, buffer, length); + uint8_t const idx = get_idx_by_ptr(p_cdc); + ctrl_buf = cdch_epbuf[idx].ctrl; + tu_memcpy_s(ctrl_buf, sizeof(cdch_epbuf[idx].ctrl), buffer, length); } tuh_xfer_t xfer = { .daddr = p_cdc->daddr, .ep_addr = 0, .setup = &request, - .buffer = enum_buf, + .buffer = ctrl_buf, .complete_cb = complete_cb, .user_data = user_data }; @@ -1553,14 +1558,15 @@ static void cp210x_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t p_cdc->line.coding.bit_rate = p_cdc->requested_line.coding.bit_rate; break; - default: break; + default: + break; // unsupported request } } static bool cp210x_set_baudrate(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { // Not every baud rate is supported. See datasheets and AN205 "CP210x Baud Rate Support" uint32_t baud_le = tu_htole32(p_cdc->requested_line.coding.bit_rate); - return cp210x_set_request(p_cdc, CP210X_SET_BAUDRATE, 0, (uint8_t *) &baud_le, 4, complete_cb, user_data); + return cp210x_set_request(p_cdc, CP210X_SET_BAUDRATE, 0, (uint8_t const *) &baud_le, 4, complete_cb, user_data); } static bool cp210x_set_data_format(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { @@ -1583,21 +1589,23 @@ enum { CONFIG_CP210X_COMPLETE }; -static bool cp210x_open(uint8_t daddr, tusb_desc_interface_t const *itf_desc, uint16_t max_len) { +static uint16_t cp210x_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len) { // CP210x Interface includes 1 vendor interface + 2 bulk endpoints - TU_VERIFY(itf_desc->bInterfaceSubClass == 0 && itf_desc->bInterfaceProtocol == 0 && itf_desc->bNumEndpoints == 2); - TU_VERIFY(sizeof(tusb_desc_interface_t) + 2 * sizeof(tusb_desc_endpoint_t) <= max_len); + TU_VERIFY(itf_desc->bInterfaceSubClass == 0 && itf_desc->bInterfaceProtocol == 0 && itf_desc->bNumEndpoints == 2, 0); + const uint16_t drv_len = + (uint16_t)(sizeof(tusb_desc_interface_t) + itf_desc->bNumEndpoints * sizeof(tusb_desc_endpoint_t)); + TU_VERIFY(drv_len <= max_len, 0); cdch_interface_t *p_cdc = make_new_itf(daddr, itf_desc); - TU_VERIFY(p_cdc); + TU_VERIFY(p_cdc, 0); p_cdc->serial_drid = SERIAL_DRIVER_CP210X; - // endpoint pair - tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) tu_desc_next(itf_desc); - // data endpoints expected to be in pairs - return open_ep_stream_pair(p_cdc, desc_ep); + const tusb_desc_endpoint_t *desc_ep = (const tusb_desc_endpoint_t *)tu_desc_next(itf_desc); + TU_ASSERT(open_ep_stream_pair(p_cdc, desc_ep)); + + return drv_len; } static bool cp210x_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) { @@ -1635,7 +1643,7 @@ static uint16_t ch34x_get_divisor_prescaler(cdch_interface_t *p_cdc); //------------- Control Request -------------// static bool ch34x_set_request(cdch_interface_t *p_cdc, uint8_t direction, uint8_t request, - uint16_t value, uint16_t index, uint8_t *buffer, uint16_t length, + uint16_t value, uint16_t index, uint8_t const *buffer, uint16_t length, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { tusb_control_request_t const request_setup = { .bmRequestType_bit = { @@ -1649,13 +1657,14 @@ static bool ch34x_set_request(cdch_interface_t *p_cdc, uint8_t direction, uint8_ .wLength = tu_htole16(length) }; - // use usbh enum buf since application variable does not live long enough - uint8_t *enum_buf = NULL; + // use local ctrl buf since application variable does not live long enough + uint8_t *ctrl_buf = NULL; - if (buffer && length > 0) { - enum_buf = usbh_get_enum_buf(); - if (direction == TUSB_DIR_OUT) { - tu_memcpy_s(enum_buf, CFG_TUH_ENUMERATION_BUFSIZE, buffer, length); + if (length > 0) { + uint8_t const idx = get_idx_by_ptr(p_cdc); + ctrl_buf = cdch_epbuf[idx].ctrl; + if (buffer && direction == TUSB_DIR_OUT) { + tu_memcpy_s(ctrl_buf, sizeof(cdch_epbuf[idx].ctrl), buffer, length); } } @@ -1663,7 +1672,7 @@ static bool ch34x_set_request(cdch_interface_t *p_cdc, uint8_t direction, uint8_ .daddr = p_cdc->daddr, .ep_addr = 0, .setup = &request_setup, - .buffer = enum_buf, + .buffer = ctrl_buf, .complete_cb = complete_cb, .user_data = user_data }; @@ -1677,8 +1686,8 @@ TU_ATTR_ALWAYS_INLINE static inline bool ch34x_control_out(cdch_interface_t *p_c } TU_ATTR_ALWAYS_INLINE static inline bool ch34x_control_in(cdch_interface_t *p_cdc, uint8_t request, uint16_t value, uint16_t index, - uint8_t *buffer, uint16_t buffersize, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { - return ch34x_set_request(p_cdc, TUSB_DIR_IN, request, value, index, buffer, buffersize, + uint16_t buffersize, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + return ch34x_set_request(p_cdc, TUSB_DIR_IN, request, value, index, NULL, buffersize, complete_cb, user_data); } @@ -1687,12 +1696,6 @@ TU_ATTR_ALWAYS_INLINE static inline bool ch34x_write_reg(cdch_interface_t *p_cdc return ch34x_control_out(p_cdc, CH34X_REQ_WRITE_REG, reg, reg_value, complete_cb, user_data); } -//static bool ch34x_read_reg_request ( cdch_interface_t * p_cdc, uint16_t reg, -// uint8_t *buffer, uint16_t buffersize, tuh_xfer_cb_t complete_cb, uintptr_t user_data ) -//{ -// return ch34x_control_in ( p_cdc, CH34X_REQ_READ_REG, reg, 0, buffer, buffersize, complete_cb, user_data ); -//} - //------------- Driver API -------------// // internal control complete to update state such as line state, encoding @@ -1714,7 +1717,8 @@ static void ch34x_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t p_cdc->line.coding.data_bits = p_cdc->requested_line.coding.data_bits; break; - default: break; + default: + break; // unsupported } break; @@ -1722,19 +1726,20 @@ static void ch34x_internal_control_complete(cdch_interface_t *p_cdc, tuh_xfer_t p_cdc->line.control_state = p_cdc->requested_line.control_state; break; - default: break; + default: + break; // unsupported request } } static bool ch34x_set_data_format(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { const uint8_t lcr = ch34x_get_lcr(p_cdc); - TU_VERIFY(lcr); + TU_VERIFY(lcr > 0); return ch34x_write_reg(p_cdc, CH32X_REG16_LCR2_LCR, lcr, complete_cb, user_data); } static bool ch34x_set_baudrate(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { const uint16_t div_ps = ch34x_get_divisor_prescaler(p_cdc); - TU_VERIFY(div_ps); + TU_VERIFY(div_ps > 0); return ch34x_write_reg(p_cdc, CH34X_REG16_DIVISOR_PRESCALER, div_ps, complete_cb, user_data); } @@ -1755,29 +1760,30 @@ enum { CONFIG_CH34X_COMPLETE }; -static bool ch34x_open(uint8_t daddr, tusb_desc_interface_t const * itf_desc, uint16_t max_len) { +static uint16_t ch34x_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len) { // CH34x Interface includes 1 vendor interface + 2 bulk + 1 interrupt endpoints - TU_VERIFY(itf_desc->bNumEndpoints == 3); - TU_VERIFY(sizeof(tusb_desc_interface_t) + 3 * sizeof(tusb_desc_endpoint_t) <= max_len); + TU_VERIFY(itf_desc->bNumEndpoints == 3, 0); + const uint16_t drv_len = + (uint16_t)(sizeof(tusb_desc_interface_t) + itf_desc->bNumEndpoints * sizeof(tusb_desc_endpoint_t)); + TU_VERIFY(drv_len <= max_len, 0); cdch_interface_t * p_cdc = make_new_itf(daddr, itf_desc); - TU_VERIFY(p_cdc); + TU_VERIFY(p_cdc, 0); p_cdc->serial_drid = SERIAL_DRIVER_CH34X; - tusb_desc_endpoint_t const * desc_ep = (tusb_desc_endpoint_t const *) tu_desc_next(itf_desc); + const tusb_desc_endpoint_t *desc_ep = (const tusb_desc_endpoint_t *)tu_desc_next(itf_desc); // data endpoints expected to be in pairs - TU_ASSERT(open_ep_stream_pair(p_cdc, desc_ep)); - desc_ep += 2; + TU_ASSERT(open_ep_stream_pair(p_cdc, desc_ep), 0); + desc_ep = (const tusb_desc_endpoint_t *)((uintptr_t)desc_ep + 2 * sizeof(tusb_desc_endpoint_t)); // Interrupt endpoint: not used for now - TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(desc_ep) && - TUSB_XFER_INTERRUPT == desc_ep->bmAttributes.xfer); - TU_ASSERT(tuh_edpt_open(daddr, desc_ep)); + TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(desc_ep) && TUSB_XFER_INTERRUPT == desc_ep->bmAttributes.xfer, 0); + TU_ASSERT(tuh_edpt_open(daddr, desc_ep), 0); p_cdc->ep_notif = desc_ep->bEndpointAddress; - return true; + return drv_len; } static bool ch34x_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) { @@ -1786,8 +1792,7 @@ static bool ch34x_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) switch (state) { case CONFIG_CH34X_READ_VERSION: { - uint8_t* enum_buf = usbh_get_enum_buf(); - TU_ASSERT(ch34x_control_in(p_cdc, CH34X_REQ_READ_VERSION, 0, 0, enum_buf, 2, + TU_ASSERT(ch34x_control_in(p_cdc, CH34X_REQ_READ_VERSION, 0, 0, 2, cdch_process_set_config, CONFIG_CH34X_SERIAL_INIT)); break; } @@ -1917,7 +1922,8 @@ static uint8_t ch34x_get_lcr(cdch_interface_t *p_cdc) { lcr |= CH34X_LCR_ENABLE_PAR | CH34X_LCR_MARK_SPACE | CH34X_LCR_PAR_EVEN; break; - default: break; + default: + break; // invalid parity } // 1.5 stop bits not supported @@ -1941,7 +1947,7 @@ static bool pl2303_encode_baud_rate(cdch_interface_t *p_cdc, uint8_t buf[PL2303_ //------------- Control Request -------------// static bool pl2303_set_request(cdch_interface_t *p_cdc, uint8_t request, uint8_t requesttype, - uint16_t value, uint16_t index, uint8_t *buffer, uint16_t length, + uint16_t value, uint16_t index, uint8_t const *buffer, uint16_t length, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { tusb_control_request_t const request_setup = { .bmRequestType = requesttype, @@ -1951,13 +1957,14 @@ static bool pl2303_set_request(cdch_interface_t *p_cdc, uint8_t request, uint8_t .wLength = tu_htole16(length) }; - // use usbh enum buf since application variable does not live long enough - uint8_t *enum_buf = NULL; + // use local ctrl buf since application variable does not live long enough + uint8_t *ctrl_buf = NULL; - if (buffer && length > 0) { - enum_buf = usbh_get_enum_buf(); - if (request_setup.bmRequestType_bit.direction == TUSB_DIR_OUT) { - tu_memcpy_s(enum_buf, CFG_TUH_ENUMERATION_BUFSIZE, buffer, length); + if (length > 0) { + uint8_t const idx = get_idx_by_ptr(p_cdc); + ctrl_buf = cdch_epbuf[idx].ctrl; + if (buffer && request_setup.bmRequestType_bit.direction == TUSB_DIR_OUT) { + tu_memcpy_s(ctrl_buf, sizeof(cdch_epbuf[idx].ctrl), buffer, length); } } @@ -1965,7 +1972,7 @@ static bool pl2303_set_request(cdch_interface_t *p_cdc, uint8_t request, uint8_t .daddr = p_cdc->daddr, .ep_addr = 0, .setup = &request_setup, - .buffer = enum_buf, + .buffer = ctrl_buf, .complete_cb = complete_cb, .user_data = user_data }; @@ -1973,10 +1980,10 @@ static bool pl2303_set_request(cdch_interface_t *p_cdc, uint8_t request, uint8_t return tuh_control_xfer(&xfer); } -static bool pl2303_vendor_read(cdch_interface_t *p_cdc, uint16_t value, uint8_t *buf, +static bool pl2303_vendor_read(cdch_interface_t *p_cdc, uint16_t value, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { uint8_t request = p_cdc->pl2303.type == PL2303_TYPE_HXN ? PL2303_VENDOR_READ_NREQUEST : PL2303_VENDOR_READ_REQUEST; - return pl2303_set_request(p_cdc, request, PL2303_VENDOR_READ_REQUEST_TYPE, value, 0, buf, 1, complete_cb, user_data); + return pl2303_set_request(p_cdc, request, PL2303_VENDOR_READ_REQUEST_TYPE, value, 0, NULL, 1, complete_cb, user_data); } static bool pl2303_vendor_write(cdch_interface_t *p_cdc, uint16_t value, uint16_t index, @@ -1986,9 +1993,8 @@ static bool pl2303_vendor_write(cdch_interface_t *p_cdc, uint16_t value, uint16_ } static inline bool pl2303_supports_hx_status(cdch_interface_t *p_cdc, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { - uint8_t buf = 0; return pl2303_set_request(p_cdc, PL2303_VENDOR_READ_REQUEST, PL2303_VENDOR_READ_REQUEST_TYPE, PL2303_READ_TYPE_HX_STATUS, 0, - &buf, 1, complete_cb, user_data); + NULL, 1, complete_cb, user_data); } //static bool pl2303_get_line_request(cdch_interface_t * p_cdc, uint8_t buf[PL2303_LINE_CODING_BUFSIZE]) { @@ -2000,13 +2006,15 @@ static inline bool pl2303_supports_hx_status(cdch_interface_t *p_cdc, tuh_xfer_c // return pl2303_set_request(p_cdc, PL2303_BREAK_REQUEST, PL2303_BREAK_REQUEST_TYPE, state, 0, NULL, 0); //} -static inline int pl2303_clear_halt(cdch_interface_t *p_cdc, uint8_t endp, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { +static inline bool +pl2303_clear_halt(cdch_interface_t *p_cdc, uint8_t endp, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { /* we don't care if it wasn't halted first. in fact some devices * (like some ibmcam model 1 units) seem to expect hosts to make * this request for iso endpoints, which can't halt! */ - return pl2303_set_request(p_cdc, TUSB_REQ_CLEAR_FEATURE, PL2303_CLEAR_HALT_REQUEST_TYPE, TUSB_REQ_FEATURE_EDPT_HALT, endp, - NULL, 0, complete_cb, user_data); + return pl2303_set_request( + p_cdc, TUSB_REQ_CLEAR_FEATURE, PL2303_CLEAR_HALT_REQUEST_TYPE, TUSB_REQ_FEATURE_EDPT_HALT, endp, NULL, 0, + complete_cb, user_data); } //------------- Driver API -------------// @@ -2088,13 +2096,15 @@ enum { CONFIG_PL2303_COMPLETE }; -static bool pl2303_open(uint8_t daddr, tusb_desc_interface_t const *itf_desc, uint16_t max_len) { +static uint16_t pl2303_open(uint8_t daddr, const tusb_desc_interface_t *itf_desc, uint16_t max_len) { // PL2303 Interface includes 1 vendor interface + 1 interrupt endpoints + 2 bulk - TU_VERIFY(itf_desc->bNumEndpoints == 3); - TU_VERIFY(sizeof(tusb_desc_interface_t) + 3 * sizeof(tusb_desc_endpoint_t) <= max_len); + TU_VERIFY(itf_desc->bNumEndpoints == 3, 0); + const uint16_t drv_len = + (uint16_t)(sizeof(tusb_desc_interface_t) + itf_desc->bNumEndpoints * sizeof(tusb_desc_endpoint_t)); + TU_VERIFY(drv_len <= max_len, 0); cdch_interface_t *p_cdc = make_new_itf(daddr, itf_desc); - TU_VERIFY(p_cdc); + TU_VERIFY(p_cdc, 0); p_cdc->serial_drid = SERIAL_DRIVER_PL2303; p_cdc->pl2303.quirks = 0; @@ -2103,23 +2113,21 @@ static bool pl2303_open(uint8_t daddr, tusb_desc_interface_t const *itf_desc, ui tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) tu_desc_next(itf_desc); // Interrupt endpoint: not used for now - TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(desc_ep) && - TUSB_XFER_INTERRUPT == desc_ep->bmAttributes.xfer); - TU_ASSERT(tuh_edpt_open(daddr, desc_ep)); + TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(desc_ep) && TUSB_XFER_INTERRUPT == desc_ep->bmAttributes.xfer, 0); + TU_ASSERT(tuh_edpt_open(daddr, desc_ep), 0); p_cdc->ep_notif = desc_ep->bEndpointAddress; desc_ep += 1; // data endpoints expected to be in pairs - TU_ASSERT(open_ep_stream_pair(p_cdc, desc_ep)); + TU_ASSERT(open_ep_stream_pair(p_cdc, desc_ep), 0); - return true; + return drv_len; } static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) { // state CONFIG_PL2303_READ1 may have no success due to expected stall by pl2303_supports_hx_status() const uintptr_t state = xfer->user_data; TU_ASSERT(xfer->result == XFER_RESULT_SUCCESS || state == CONFIG_PL2303_READ1); - uint8_t* enum_buf = usbh_get_enum_buf(); pl2303_type_t type; switch (state) { @@ -2131,10 +2139,9 @@ static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) if (type == PL2303_TYPE_NEED_SUPPORTS_HX_STATUS) { TU_ASSERT(pl2303_supports_hx_status(p_cdc, cdch_process_set_config, CONFIG_PL2303_READ1)); break; - } else { - // no transfer triggered and continue with CONFIG_PL2303_READ1 - TU_ATTR_FALLTHROUGH; } + // no transfer triggered and continue with CONFIG_PL2303_READ1 + TU_ATTR_FALLTHROUGH; case CONFIG_PL2303_READ1: // get supports_hx_status, type and quirks (step 2), do special read @@ -2151,7 +2158,7 @@ static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) // purpose unknown, overtaken from Linux Kernel driver if (p_cdc->pl2303.type != PL2303_TYPE_HXN) { - TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, enum_buf, cdch_process_set_config, CONFIG_PL2303_WRITE1)); + TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, cdch_process_set_config, CONFIG_PL2303_WRITE1)); break; }// else: continue with next step TU_ATTR_FALLTHROUGH; @@ -2167,7 +2174,7 @@ static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) case CONFIG_PL2303_READ2: // purpose unknown, overtaken from Linux Kernel driver if (p_cdc->pl2303.type != PL2303_TYPE_HXN) { - TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, enum_buf, cdch_process_set_config, CONFIG_PL2303_READ3)); + TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, cdch_process_set_config, CONFIG_PL2303_READ3)); break; }// else: continue with next step TU_ATTR_FALLTHROUGH; @@ -2175,7 +2182,7 @@ static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) case CONFIG_PL2303_READ3: // purpose unknown, overtaken from Linux Kernel driver if (p_cdc->pl2303.type != PL2303_TYPE_HXN) { - TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8383, enum_buf, cdch_process_set_config, CONFIG_PL2303_READ4)); + TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8383, cdch_process_set_config, CONFIG_PL2303_READ4)); break; }// else: continue with next step TU_ATTR_FALLTHROUGH; @@ -2183,7 +2190,7 @@ static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) case CONFIG_PL2303_READ4: // purpose unknown, overtaken from Linux Kernel driver if (p_cdc->pl2303.type != PL2303_TYPE_HXN) { - TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, enum_buf, cdch_process_set_config, CONFIG_PL2303_WRITE2)); + TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, cdch_process_set_config, CONFIG_PL2303_WRITE2)); break; }// else: continue with next step TU_ATTR_FALLTHROUGH; @@ -2199,7 +2206,7 @@ static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) case CONFIG_PL2303_READ5: // purpose unknown, overtaken from Linux Kernel driver if (p_cdc->pl2303.type != PL2303_TYPE_HXN) { - TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, enum_buf, cdch_process_set_config, CONFIG_PL2303_READ6)); + TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8484, cdch_process_set_config, CONFIG_PL2303_READ6)); break; }// else: continue with next step TU_ATTR_FALLTHROUGH; @@ -2207,7 +2214,7 @@ static bool pl2303_process_set_config(cdch_interface_t *p_cdc, tuh_xfer_t *xfer) case CONFIG_PL2303_READ6: // purpose unknown, overtaken from Linux Kernel driver if (p_cdc->pl2303.type != PL2303_TYPE_HXN) { - TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8383, enum_buf, cdch_process_set_config, CONFIG_PL2303_WRITE3)); + TU_ASSERT(pl2303_vendor_read(p_cdc, 0x8383, cdch_process_set_config, CONFIG_PL2303_WRITE3)); break; }// else: continue with next step TU_ATTR_FALLTHROUGH; @@ -2379,10 +2386,12 @@ static pl2303_type_t pl2303_detect_type(cdch_interface_t *p_cdc, uint8_t step) { return PL2303_TYPE_HXN; default: - break; + break; // unknown device } break; - default: break; + + default: + break; // unknown device } TU_LOG_CDC(p_cdc, "unknown device type bcdUSB = 0x%04x", desc_dev.bcdUSB); @@ -2444,8 +2453,9 @@ static uint32_t pl2303_encode_baud_rate_divisor(uint8_t buf[PL2303_LINE_CODING_B */ baseline = 12000000 * 32; mantissa = baseline / baud; - if (mantissa == 0) + if (mantissa == 0) { mantissa = 1; /* Avoid dividing by zero if baud > 32 * 12M. */ + } exponent = 0; while (mantissa >= 512) { if (exponent < 7) { @@ -2517,7 +2527,7 @@ static bool pl2303_encode_baud_rate(cdch_interface_t *p_cdc, uint8_t buf[PL2303_ * Use direct method for supported baud rates, otherwise use divisors. * Newer chip types do not support divisor encoding. */ - if (type_data->no_divisors) { + if (type_data->no_divisors != 0) { baud_sup = baud; } else { baud_sup = pl2303_get_supported_baud_rate(baud); @@ -2525,7 +2535,7 @@ static bool pl2303_encode_baud_rate(cdch_interface_t *p_cdc, uint8_t buf[PL2303_ if (baud == baud_sup) { baud = pl2303_encode_baud_rate_direct(buf, baud); - } else if (type_data->alt_divisors) { + } else if (type_data->alt_divisors != 0) { baud = pl2303_encode_baud_rate_divisor_alt(buf, baud); } else { baud = pl2303_encode_baud_rate_divisor(buf, baud); |