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Code Issues Releases Activity

LP-457 Add PIOS_COM_ClearRxBuffer function

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This commit is contained in:
Laurent Lalanne 2019-05-26 11:01:09 +02:00
parent a67a374eaf
commit 22d624f40b
2 changed files with 23 additions and 0 deletions
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22
flight/pios/common/pios_com.c
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@ -296,6 +296,28 @@ int32_t PIOS_COM_ChangeBaud(uint32_t com_id, uint32_t baud)
return 0;
}
/**
* Clear Rx buffer
* \param[in] port COM port
* \return -1 if port not available
* \return 0 on success
*/
int32_t PIOS_COM_ClearRxBuffer(uint32_t com_id)
{
struct pios_com_dev *com_dev = (struct pios_com_dev *)com_id;
if (!PIOS_COM_validate(com_dev)) {
/* Undefined COM port for this board (see pios_board.c) */
return -1;
}
fifoBuf_clearData(&com_dev->rx);
return 0;
}
int32_t PIOS_COM_ChangeConfig(uint32_t com_id, enum PIOS_COM_Word_Length word_len, enum PIOS_COM_Parity parity, enum PIOS_COM_StopBits stop_bits, uint32_t baud_rate)
{
struct pios_com_dev *com_dev = (struct pios_com_dev *)com_id;

1
flight/pios/inc/pios_com.h
View File

@ -84,6 +84,7 @@ struct pios_com_driver {
/* Public Functions */
extern int32_t PIOS_COM_Init(uint32_t *com_id, const struct pios_com_driver *driver, uint32_t lower_id, uint8_t *rx_buffer, uint16_t rx_buffer_len, uint8_t *tx_buffer, uint16_t tx_buffer_len);
extern int32_t PIOS_COM_ChangeBaud(uint32_t com_id, uint32_t baud);
extern int32_t PIOS_COM_ClearRxBuffer(uint32_t com_id);
extern int32_t PIOS_COM_ChangeConfig(uint32_t com_id, enum PIOS_COM_Word_Length word_len, enum PIOS_COM_Parity parity, enum PIOS_COM_StopBits stop_bits, uint32_t baud_rate);
extern int32_t PIOS_COM_SetCtrlLine(uint32_t com_id, uint32_t mask, uint32_t state);
extern int32_t PIOS_COM_RegisterCtrlLineCallback(uint32_t usart_id, pios_com_callback_ctrl_line ctrl_line_cb, uint32_t context);