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"fix" SAM/LLD/SERCOMv1: it'll need a real fix soon
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fpoussin committed Jan 20, 2024
1 parent dc3338e commit 1ce1880
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Showing 2 changed files with 36 additions and 13 deletions.
35 changes: 22 additions & 13 deletions os/hal/ports/SAM/LLD/SERCOMv1/hal_sio_lld.c
Original file line number Diff line number Diff line change
Expand Up @@ -177,47 +177,47 @@ static inline void usart_enable_tx_end_irq(SIODriver *siop) {
* @notapi
*/
void sio_lld_serve_interrupt(SIODriver *siop) {
osalDbgAssert(siop->state == SIO_ACTIVE, "invalid state");
osalDbgAssert(siop->state == SIO_READY, "invalid state");
uint8_t intflag = siop->usart->SERCOM_INTFLAG;
uint8_t intenset = siop->usart->SERCOM_INTENSET;
uint8_t evtmask = intflag & (SERCOM_USART_INT_INTFLAG_ERROR_Msk |
SERCOM_USART_INT_INTFLAG_RXBRK_Msk);
if(evtmask != 0) {
siop->usart->SERCOM_INTENCLR = (SERCOM_USART_INT_INTENCLR_ERROR_Msk | SERCOM_USART_INT_INTENCLR_RXBRK_Msk);
__sio_callback_rx_evt(siop);
__sio_callback(siop);

/* Waiting thread woken, if any.*/
__sio_wakeup_rx(siop, SIO_MSG_ERRORS);
__sio_wakeup_rx(siop);
}
if((intflag & SERCOM_USART_INT_INTFLAG_RXC_Msk) &&
(intenset & SERCOM_USART_INT_INTENSET_RXC_Msk)) {
siop->usart->SERCOM_INTENCLR = SERCOM_USART_INT_INTENCLR_RXC_Msk;
/* The callback is invoked if defined.*/
__sio_callback_rx(siop);
__sio_callback(siop);

/* Waiting thread woken, if any.*/
__sio_wakeup_rx(siop, MSG_OK);
__sio_wakeup_rx(siop);
}
/* TX FIFO is non-full.*/
if ((intflag & SERCOM_USART_INT_INTFLAG_DRE_Msk) &&
(intenset & SERCOM_USART_INT_INTENSET_DRE_Msk)) {
siop->usart->SERCOM_INTENCLR = SERCOM_USART_INT_INTENCLR_DRE_Msk;
/* The callback is invoked if defined.*/
__sio_callback_tx(siop);
__sio_callback(siop);

/* Waiting thread woken, if any.*/
__sio_wakeup_tx(siop, MSG_OK);
__sio_wakeup_tx(siop);
}

/* Physical transmission end.*/
if ((intflag & SERCOM_USART_INT_INTFLAG_TXC_Msk) &&
(intenset & SERCOM_USART_INT_INTENSET_TXC_Msk)) {
siop->usart->SERCOM_INTENCLR = SERCOM_USART_INT_INTENCLR_TXC_Msk;
/* The callback is invoked if defined.*/
__sio_callback_tx_end(siop);
__sio_callback(siop);

/* Waiting thread woken, if any.*/
__sio_wakeup_txend(siop, MSG_OK);
__sio_wakeup_txend(siop);
}
}

Expand Down Expand Up @@ -533,16 +533,16 @@ sio_events_mask_t sio_lld_get_and_clear_events(SIODriver *siop) {
status = (uint8_t)(siop->usart->SERCOM_STATUS);
irq_status = (uint8_t)(siop->usart->SERCOM_INTFLAG);
if(status & SERCOM_USART_INT_STATUS_BUFOVF_Msk) {
evtmask |= SIO_OVERRUN_ERROR;
evtmask |= SD_OVERRUN_ERROR;
}
if(status & SERCOM_USART_INT_STATUS_FERR_Msk) {
evtmask |= SIO_FRAMING_ERROR;
evtmask |= SD_FRAMING_ERROR;
}
if(status & SERCOM_USART_INT_STATUS_PERR_Msk) {
evtmask |= SIO_PARITY_ERROR;
evtmask |= SD_PARITY_ERROR;
}
if(irq_status & SERCOM_USART_INT_INTFLAG_RXBRK_Msk) {
evtmask |= SIO_BREAK_DETECTED;
evtmask |= SD_BREAK_DETECTED;
irq_status |= SERCOM_USART_INT_INTFLAG_RXBRK_Msk;
}

Expand Down Expand Up @@ -690,6 +690,15 @@ msg_t sio_lld_control(SIODriver *siop, unsigned int operation, void *arg) {
return MSG_OK;
}

/**
* @brief Enable flags change notification.
*
* @param[in] siop pointer to the @p SIODriver object
*/
void sio_lld_update_enable_flags(SIODriver *siop) {

(void)siop;
}

#endif /* HAL_USE_SIO == TRUE */

Expand Down
14 changes: 14 additions & 0 deletions os/hal/ports/SAM/LLD/SERCOMv1/hal_sio_lld.h
Original file line number Diff line number Diff line change
Expand Up @@ -208,6 +208,20 @@ typedef uint32_t sio_events_mask_t;
#define sio_lld_is_tx_ongoing(siop) !((siop->usart->SERCOM_INTFLAG & SERCOM_USART_INT_INTFLAG_TXC_Msk) == \
SERCOM_USART_INT_INTFLAG_TXC_Msk)

/**
* @brief Determines if RX has pending error events to be read and cleared.
* @note Only error and protocol errors are handled, data events are not
* considered.
*
* @param[in] siop pointer to the @p SIODriver object
* @return The RX error events.
* @retval false if RX has no pending events
* @retval true if RX has pending events
*
* @notapi
*/
#define sio_lld_has_rx_errors(siop) false

/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
Expand Down

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