30 lines
880 B
C++
30 lines
880 B
C++
#include "spi_api.h"
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#include "SPI_F4HDK.h"
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#if DEVICE_SPI_ASYNCH
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#define SPI_S(obj) (( struct spi_s *)(&(obj->spi)))
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#else
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#define SPI_S(obj) (( struct spi_s *)(obj))
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#endif
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int spi_master_transfer_2(spi_t *obj, const unsigned char *tx, size_t tx_length, unsigned char *rx, size_t rx_length) {
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struct spi_s *spiobj = SPI_S(obj);
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SPI_HandleTypeDef *handle = &(spiobj->handle);
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if(tx_length < rx_length) {
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tx_length = rx_length;
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}
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/* Use 10ms timeout */
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uint16_t ret = HAL_SPI_TransmitReceive(handle, (uint8_t *)tx, (uint8_t *)rx, tx_length, 3); //3
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if(ret == HAL_OK) {
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return tx_length;
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} else {
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return -1;
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}
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}
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int SPI_F4HDK::transfer_2(const unsigned char *tx_buffer, int tx_length, unsigned char *rx_buffer, int rx_length) {
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return spi_master_transfer_2 (&_spi, tx_buffer, tx_length, rx_buffer, rx_length);
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}
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