Posted on September 30, 2015 at 08:14 Guys,
Can I replace this function
SPIPutChar(uint8_t data[])
{
/* Write and Read a byte on SPI interface. */
unsigned char inb;
/* Wait if TXE cleared, Tx FIFO is full. */
while ((SPI1->SR & TXE) == 0);
SPI1->DR = outb;
/* Wait if RNE cleared, Rx FIFO is empty. */
while ((SPI1->SR & RXNE) == 0);
inb = SPI1->DR;
return (inb); HAL_SPI_Transmit_DMA(&hspi1,data,1);
and
char SPIGetChar(void)
{
char Data = 0;
/* Wait until the transmit buffer is empty */
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
/* Send the byte */
SPI_I2S_SendData(SPI1, 0xFF);
/* Wait until a data is received */
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
/* Get the received data */
/Data = SPI_I2S_ReceiveData(SPI1);
/* Return the shifted data */
return Data;
} to :
HAL_SPI_Receive_DMA(&hspi1, data, 1)
Please correct me if I'm wrong with this function, I tried to replace with HAL function
unsigned char Mp3ReadRegister( unsigned char addressbyte)
{
int resultvalue = 0;
Mp3DeselectData();
Mp3SelectControl(); //XCS = 0
uint8_t data7[2] = { VS_READ_COMMAND, addressbyte };
HAL_SPI_Transmit_DMA(&hspi1,data7,2);
//SPIPutChar(VS_READ_COMMAND); //????????
//SPIPutChar(addressbyte); //????????
uint8_t data8[1] = {0x00};
resultvalue = HAL_SPI_Receive_DMA(&hspi1, data8, 1) << 8;
resultvalue |= HAL_SPI_Receive_DMA(&hspi1, data8, 1);
//resultvalue = SPIGetChar() << 8;//???8???
//resultvalue |= SPIGetChar(); //???8???
Mp3DeselectControl();
return resultvalue; //??16??????
}
Thank you
