void TM_SPI_DMA_InitWithStreamAndChannel(SPI_TypeDef* SPIx, DMA_Stream_TypeDef* TX_Stream, uint32_t TX_Channel, DMA_Stream_TypeDef* RX_Stream, uint32_t RX_Channel) {
/* Get USART settings */
TM_SPI_DMA_INT_t* Settings = TM_SPI_DMA_INT_GetSettings(SPIx);
/* Set values */
Settings->RX_Channel = RX_Channel;
Settings->RX_Stream = RX_Stream;
Settings->TX_Channel = TX_Channel;
Settings->TX_Stream = TX_Stream;
/* Init SPI */
TM_SPI_DMA_Init(SPIx);
}
int main(void) {
/* Initialize system */
SystemInit();
/* Initialize delay */
TM_DELAY_Init();
/* Init SPI */
TM_SPI_Init(SPI1, TM_SPI_PinsPack_1);
/* Init SPI DMA */
TM_SPI_DMA_Init(SPI1);
/* Set fake SPI TX buffer */
memset(TX_Buffer, 0x00, sizeof(TX_Buffer));
val = TM_GENERAL_DWTCounterEnable();
/* Set CS low first here before you send data over SPI */
TM_GENERAL_DWTCounterSetValue(0);
/* Send data over SPI1 with DMA */
/* Exchange data with SPI slave using SPI DMA */
/* Exchange 5 bytes of data */
TM_SPI_DMA_Transmit(SPI1, TX_Buffer, RX_Buffer, sizeof(TX_Buffer));
/* Wait till SPI DMA do it's job */
/* You can do other stuff instead */
while (TM_SPI_DMA_Working(SPI1));
val = TM_GENERAL_DWTCounterGetValue();
/* Little delay, for debug */
Delayms(10);
TM_GENERAL_DWTCounterSetValue(0);
TM_SPI_SendMulti(SPI1, TX_Buffer, RX_Buffer, sizeof(TX_Buffer));
val = TM_GENERAL_DWTCounterGetValue();
/* Send 5 bytes of data and don't care what you receive back from slave via DMA */
/* RX_Buffer should not be changed in debug window */
TM_SPI_DMA_Transmit(SPI1, TX_Buffer, NULL, 5);
/* Wait till SPI DMA do it's job */
/* You can do other stuff instead */
while (TM_SPI_DMA_Working(SPI1));
/* Little delay, for debug */
Delayms(10);
/* Receive 5 bytes of data, sent dummy 0x00 bytes to slave via DMA */
TM_SPI_DMA_Transmit(SPI1, NULL, RX_Buffer, 5);
/* Wait till SPI DMA do it's job */
/* You can do other stuff instead */
while (TM_SPI_DMA_Working(SPI1));
/* Set CS high here after last byte is done by SPI */
while (1) {
}
}
