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add tuh_cdc_get_local_line_coding()

This commit is contained in:
hathach 2022-12-22 19:41:39 +07:00
parent 14d45b580e
commit f33883c308
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GPG Key ID: F5D50C6D51D17CBA
3 changed files with 45 additions and 4 deletions
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15
examples/host/cdc_msc_hid/src/cdc_app.c
View File

@ -90,7 +90,18 @@ void tuh_cdc_mount_cb(uint8_t idx)
tuh_cdc_itf_info_t itf_info = { 0 };
tuh_cdc_itf_get_info(idx, &itf_info);
printf("CDC Interface is mounted: device address = %u, itf_num = %u\r\n", itf_info.daddr, itf_info.bInterfaceNumber);
printf("CDC Interface is mounted: address = %u, itf_num = %u\r\n", itf_info.daddr, itf_info.bInterfaceNumber);
#ifdef CFG_TUH_CDC_LINE_CODING_ON_ENUM
// CFG_TUH_CDC_LINE_CODING_ON_ENUM must be defined for line coding is set by tinyusb in enumeration
// otherwise you need to call tuh_cdc_set_line_coding() first
cdc_line_coding_t line_coding = { 0 };
if ( tuh_cdc_get_local_line_coding(idx, &line_coding) )
{
printf(" Baudrate: %lu, Stop Bits : %u\r\n", line_coding.bit_rate, line_coding.stop_bits);
printf(" Parity : %u, Data Width: %u\r\n", line_coding.parity , line_coding.data_bits);
}
#endif
}
void tuh_cdc_umount_cb(uint8_t idx)
@ -98,5 +109,5 @@ void tuh_cdc_umount_cb(uint8_t idx)
tuh_cdc_itf_info_t itf_info = { 0 };
tuh_cdc_itf_get_info(idx, &itf_info);
printf("CDC Interface is unmounted: device address = %u, itf_num = %u\r\n", itf_info.daddr, itf_info.bInterfaceNumber);
printf("CDC Interface is unmounted: address = %u, itf_num = %u\r\n", itf_info.daddr, itf_info.bInterfaceNumber);
}

22
src/class/cdc/cdc_host.c
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@ -52,8 +52,8 @@ typedef struct {
cdc_acm_capability_t acm_capability;
uint8_t ep_notif;
cdc_line_coding_t line_coding; // Baudrate, stop bits, parity, data width
uint8_t line_state; // DTR (bit0), RTS (bit1)
cdc_line_coding_t line_coding; // Baudrate, stop bits, parity, data width
uint8_t line_state; // DTR (bit0), RTS (bit1)
tuh_xfer_cb_t user_control_cb;
@ -162,6 +162,20 @@ bool tuh_cdc_get_rts(uint8_t idx)
return (p_cdc->line_state & CDC_CONTROL_LINE_STATE_RTS) ? true : false;
}
bool tuh_cdc_get_local_line_coding(uint8_t idx, cdc_line_coding_t* line_coding)
{
cdch_interface_t* p_cdc = get_itf(idx);
TU_VERIFY(p_cdc);
*line_coding = p_cdc->line_coding;
return true;
}
//--------------------------------------------------------------------+
// Write
//--------------------------------------------------------------------+
uint32_t tuh_cdc_write(uint8_t idx, void const* buffer, uint32_t bufsize)
{
cdch_interface_t* p_cdc = get_itf(idx);
@ -194,6 +208,10 @@ uint32_t tuh_cdc_write_available(uint8_t idx)
return tu_edpt_stream_write_available(&p_cdc->stream.tx);
}
//--------------------------------------------------------------------+
// Read
//--------------------------------------------------------------------+
uint32_t tuh_cdc_read (uint8_t idx, void* buffer, uint32_t bufsize)
{
cdch_interface_t* p_cdc = get_itf(idx);

12
src/class/cdc/cdc_host.h
View File

@ -102,6 +102,12 @@ TU_ATTR_ALWAYS_INLINE static inline bool tuh_cdc_connected(uint8_t idx)
return tuh_cdc_get_dtr(idx);
}
// Get local (saved/cached) version of line coding.
// This function should return correct values if tuh_cdc_set_line_coding() / tuh_cdc_get_line_coding()
// are invoked previously or CFG_TUH_CDC_LINE_CODING_ON_ENUM is defined.
// NOTE: This function does not make any USB transfer request to device.
bool tuh_cdc_get_local_line_coding(uint8_t idx, cdc_line_coding_t* line_coding);
//--------------------------------------------------------------------+
// Write API
//--------------------------------------------------------------------+
@ -133,6 +139,7 @@ bool tuh_cdc_read_clear (uint8_t idx);
//--------------------------------------------------------------------+
// Control Endpoint (Request) API
// Each Function will make a USB transfer request to/from device
//--------------------------------------------------------------------+
// Request to Set Control Line State: DTR (bit 0), RTS (bit 1)
@ -141,6 +148,11 @@ bool tuh_cdc_set_control_line_state(uint8_t idx, uint16_t line_state, tuh_xfer_c
// Request to Set Line Coding
bool tuh_cdc_set_line_coding(uint8_t idx, cdc_line_coding_t const* line_coding, tuh_xfer_cb_t complete_cb, uintptr_t user_data);
// Request to Get Line Coding
// Should only use if tuh_cdc_set_line_coding() / tuh_cdc_get_line_coding() never got invoked and
// CFG_TUH_CDC_LINE_CODING_ON_ENUM is not defined
// bool tuh_cdc_get_line_coding(uint8_t idx, cdc_line_coding_t* coding);
// Connect by set both DTR, RTS
static inline bool tuh_cdc_connect(uint8_t idx, tuh_xfer_cb_t complete_cb, uintptr_t user_data)
{