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stm32 spi : IRQ handler light optimization 

This commit contains a few optimizations to get a better performance
in SPI Asynch mode
pull/3288/head
Laurent MEUNIER 2016-11-17 16:27:13 +01:00
parent 79af576051
commit e2613d5058
1 changed files with 6 additions and 10 deletions
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16
targets/TARGET_STM/stm_spi_api.c
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@ -520,19 +520,16 @@ void spi_master_transfer(spi_t *obj, const void *tx, size_t tx_length, void *rx,
} }
} }
uint32_t spi_irq_handler_asynch(spi_t *obj) inline uint32_t spi_irq_handler_asynch(spi_t *obj)
{ {
// use the right instance
struct spi_s *spiobj = SPI_S(obj);
SPI_HandleTypeDef *handle = &spiobj->handle;
int event = 0; int event = 0;
// call the CubeF4 handler, this will update the handle // call the CubeF4 handler, this will update the handle
HAL_SPI_IRQHandler(handle); HAL_SPI_IRQHandler(&obj->spi.handle);
if (HAL_SPI_GetState(handle) == HAL_SPI_STATE_READY) { if (obj->spi.handle.State == HAL_SPI_STATE_READY) {
// When HAL SPI is back to READY state, check if there was an error // When HAL SPI is back to READY state, check if there was an error
int error = HAL_SPI_GetError(handle); int error = obj->spi.handle.ErrorCode;
if(error != HAL_SPI_ERROR_NONE) { if(error != HAL_SPI_ERROR_NONE) {
// something went wrong and the transfer has definitely completed // something went wrong and the transfer has definitely completed
event = SPI_EVENT_ERROR | SPI_EVENT_INTERNAL_TRANSFER_COMPLETE; event = SPI_EVENT_ERROR | SPI_EVENT_INTERNAL_TRANSFER_COMPLETE;
@ -546,11 +543,10 @@ uint32_t spi_irq_handler_asynch(spi_t *obj)
event = SPI_EVENT_COMPLETE | SPI_EVENT_INTERNAL_TRANSFER_COMPLETE; event = SPI_EVENT_COMPLETE | SPI_EVENT_INTERNAL_TRANSFER_COMPLETE;
} }
// enable the interrupt // enable the interrupt
NVIC_DisableIRQ(spiobj->spiIRQ); NVIC_DisableIRQ(obj->spi.spiIRQ);
NVIC_ClearPendingIRQ(spiobj->spiIRQ); NVIC_ClearPendingIRQ(obj->spi.spiIRQ);
} }
if (event) DEBUG_PRINTF("SPI: Event: 0x%x\n", event);
return (event & (obj->spi.event | SPI_EVENT_INTERNAL_TRANSFER_COMPLETE)); return (event & (obj->spi.event | SPI_EVENT_INTERNAL_TRANSFER_COMPLETE));
} }