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enhance cdc add tud_cdc_line_state_cb(), tud_cdc_line_coding_cb()

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hathach 2018-04-10 02:16:48 +07:00
parent 166982bd9e
commit 3473c71a6a
2 changed files with 32 additions and 27 deletions
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56
tinyusb/class/cdc/cdc_device.c
View File

@ -56,7 +56,9 @@ TUSB_CFG_ATTR_USBRAM STATIC_VAR cdc_line_coding_t cdcd_line_coding[CONTROLLER_DE
typedef struct {
uint8_t interface_number;
cdc_acm_capability_t acm_capability;
bool connected;
// Bit 0: DTR (Data Terminal Ready), Bit 1: RTS (Request to Send)
uint8_t line_state;
uint8_t ep_notif;
uint8_t ep_in;
@ -82,7 +84,8 @@ STATIC_VAR cdcd_data_t cdcd_data[CONTROLLER_DEVICE_NUMBER];
//--------------------------------------------------------------------+
bool tud_n_cdc_connected(uint8_t rhport)
{
return cdcd_data[rhport].connected;
// Either RTS or DTR active considered as connected
return cdcd_data[rhport].line_state;
}
uint32_t tud_n_cdc_available(uint8_t rhport)
@ -111,6 +114,20 @@ uint32_t tud_n_cdc_write(uint8_t rhport, void const* buffer, uint32_t bufsize)
return fifo_write_n(&_tx_ff, buffer, bufsize);
}
bool tud_n_cdc_flush (uint8_t rhport)
{
uint8_t edpt = cdcd_data[rhport].ep_in;
VERIFY( !dcd_edpt_busy(rhport, edpt) ); // skip if previous transfer not complete
uint16_t count = fifo_read_n(&_tx_ff, _tmp_tx_buf, sizeof(_tmp_tx_buf));
VERIFY( tud_n_cdc_connected(rhport) ); // fifo is empty if not connected
if ( count ) TU_ASSERT( dcd_edpt_xfer(rhport, edpt, _tmp_tx_buf, count) );
return true;
}
//--------------------------------------------------------------------+
// USBD Driver API
@ -226,23 +243,24 @@ tusb_error_t cdcd_control_request_st(uint8_t rhport, tusb_control_request_t cons
uint16_t len = min16_of(sizeof(cdc_line_coding_t), p_request->wLength);
usbd_control_xfer_st(rhport, p_request->bmRequestType_bit.direction, (uint8_t*) &cdcd_line_coding[rhport], len);
// TODO notify application on set line encoding
// Invoke callback
if ( tud_cdc_line_coding_cb ) tud_cdc_line_coding_cb(rhport, &cdcd_line_coding[rhport]);
}
else if (CDC_REQUEST_SET_CONTROL_LINE_STATE == p_request->bRequest )
{
// CDC PSTN v1.2 section 6.3.12
// Bit 0: Indicates if DTE is present or not. This signal corresponds to V.24 signal 108/2 and RS-232 signal DTR
// Bit 1: Carrier control for half-duplex modems. This signal corresponds to V.24 signal 105 and RS-232 signal RTS
// Bit 0: Indicates if DTE is present or not.
// This signal corresponds to V.24 signal 108/2 and RS-232 signal DTR (Data Terminal Ready)
// Bit 1: Carrier control for half-duplex modems.
// This signal corresponds to V.24 signal 105 and RS-232 signal RTS (Request to Send)
cdcd_data_t * p_cdc = &cdcd_data[rhport];
// Terminal connected/disconected depending on carrier control
p_cdc->connected = BIT_TEST_(p_request->wValue, 1);
// TODO haven't known what to do with DTE present
// BIT_TEST_(p_request->wValue, 0);
p_cdc->line_state = (uint8_t) p_request->wValue;
dcd_control_status(rhport, p_request->bmRequestType_bit.direction); // ACK control request
// Invoke callback
if ( tud_cdc_line_state_cb) tud_cdc_line_state_cb(rhport, BIT_TEST_(p_request->wValue, 0), BIT_TEST_(p_request->wValue, 1));
}
else
{
@ -264,26 +282,12 @@ tusb_error_t cdcd_xfer_cb(uint8_t rhport, uint8_t ep_addr, tusb_event_t event, u
TU_ASSERT(dcd_edpt_xfer(rhport, p_cdc->ep_out, _tmp_rx_buf, sizeof(_tmp_rx_buf)), TUSB_ERROR_DCD_EDPT_XFER);
// fire callback
tud_cdc_rx_cb(rhport);
if (tud_cdc_rx_cb) tud_cdc_rx_cb(rhport);
}
return TUSB_ERROR_NONE;
}
bool tud_n_cdc_flush (uint8_t rhport)
{
uint8_t edpt = cdcd_data[rhport].ep_in;
VERIFY( !dcd_edpt_busy(rhport, edpt) ); // skip if previous transfer not complete
uint16_t count = fifo_read_n(&_tx_ff, _tmp_tx_buf, sizeof(_tmp_tx_buf));
VERIFY( tud_n_cdc_connected(rhport) ); // fifo is empty if not connected
if ( count ) TU_ASSERT( dcd_edpt_xfer(rhport, edpt, _tmp_tx_buf, count) );
return true;
}
void cdcd_sof(uint8_t rhport)
{
tud_n_cdc_flush(rhport);

3
tinyusb/class/cdc/cdc_device.h
View File

@ -83,8 +83,9 @@ static inline bool tud_cdc_flush (void)
//--------------------------------------------------------------------+
// APPLICATION CALLBACK API (WEAK is optional)
//--------------------------------------------------------------------+
//void tud_cdc_line_coding_changed_cb(uint8_t rhport, cdc_line_coding_t* p_line_coding);
void tud_cdc_rx_cb(uint8_t rhport) ATTR_WEAK;
void tud_cdc_line_state_cb(uint8_t rhport, bool dtr, bool rts) ATTR_WEAK;
void tud_cdc_line_coding_cb(uint8_t rhport, cdc_line_coding_t const* p_line_coding) ATTR_WEAK;
//--------------------------------------------------------------------+
// USBD-CLASS DRIVER API