/**
* @brief Write data into TX FIFO
* @param cNbBytes: number of bytes to be written into TX FIFO
* @param pcBuffer: pointer to data to write
* @retval SPIRIT status
*/
SpiritStatus SpiritSpiWriteLinearFifo(uint8_t cNbBytes, uint8_t* pcBuffer)
{
uint16_t tmpstatus = 0x0000;
uint8_t header[2];
int i, index;
SpiritStatus *status=(SpiritStatus *)&tmpstatus;
/* Built the header bytes */
header[0]=WRITE_HEADER;
header[1]=LINEAR_FIFO_ADDRESS;
SPI_ENTER_CRITICAL();
/* Put the SPI chip select low to start the transaction */
SpiritSPICSLow();
{
volatile uint16_t iv;
for(iv=0; iv < CS_TO_SCLK_DELAY; iv++);
}
/* Write the header bytes and read the SPIRIT status bytes */
for(i=0; i<2; i++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header[i]);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
tmpstatus += ((uint16_t)(SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB)))<<((1-i)*8);
}
/* Write the data into the FIFO according to the number of bytes */
for(index=0; index<cNbBytes; index++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, pcBuffer[index]);
}
/* To be sure to don't rise the Chip Select before the end of last sending */
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
if(SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == SET)
{
SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB);
}
/* Put the SPI chip select high to end the transaction */
SpiritSPICSHigh();
SPI_EXIT_CRITICAL();
return *status;
}
/**
* @brief Read single or multiple SPIRIT register
* @param cRegAddress: base register's address to be read
* @param cNbBytes: number of registers and bytes to be read
* @param pcBuffer: pointer to the buffer of registers' values read
* @retval SPIRIT status
*/
SpiritStatus
SpiritSpiReadRegisters(uint8_t cRegAddress, uint8_t cNbBytes, uint8_t* pcBuffer)
{
uint16_t tmpstatus = 0x0000;
uint8_t header[2];
uint8_t dummy=0xFF;
int i, index;
SpiritStatus *status=(SpiritStatus *)&tmpstatus;
/* Built the header bytes */
header[0]=READ_HEADER;
header[1]=cRegAddress;
SPI_ENTER_CRITICAL();
/* Put the SPI chip select low to start the transaction */
SpiritSPICSLow();
{
volatile uint16_t iv;
for(iv = 0; iv < CS_TO_SCLK_DELAY; iv++);
}
/* Write the header bytes and read the SPIRIT status bytes */
for(i=0; i<2; i++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header[i]);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
tmpstatus += ((uint16_t)(SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB)))<<((1-i)*8);
}
/* Read the registers according to the number of bytes */
for(index=0; index<cNbBytes; index++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, dummy);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
*pcBuffer = SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB);
pcBuffer++;
}
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
/* Put the SPI chip select high to end the transaction */
SpiritSPICSHigh();
SPI_EXIT_CRITICAL();
return *status;
}
/* XXX mlu: what does this work around? legacy function. */
void SpiritWorkaroundRx(void)
{
uint8_t header;
volatile uint8_t i;
/* Built the header bytes */
header=WRITE_HEADER;
/* Put the SPI chip select low to start the transaction */
SpiritSPICSLow();
for(i = 0; i < 0x1; i++);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header);
header=0xA8;
// for(volatile uint8_t i=0;i<0x1;i++);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header);
for(i = 0; i < 0x1; i++);
header = 0x10;
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header);
for(i = 0; i < 0x1; i++);
/* Put the SPI chip select high to end the transaction */
SpiritSPICSHigh();
for(i = 0; i < 0x1; i++);
/* Put the SPI chip select low to start the transaction */
SpiritSPICSLow();
for(i = 0; i < 0x1; i++);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header);
header=0xA8;
// for(volatile uint8_t i=0;i<0x1;i++);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header);
for(i = 0; i < 0x1; i++);
header = 0x00;
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header);
for(i = 0; i < 0x1; i++);
/* Put the SPI chip select high to end the transaction */
SpiritSPICSHigh();
}
/**
* @brief Read data from RX FIFO
* @param cNbBytes: number of bytes to read from RX FIFO
* @param pcBuffer: pointer to data read from RX FIFO
* @retval SPIRIT status
*/
StatusBytes SdkEvalSpiReadFifo(uint8_t cNbBytes, uint8_t* pcBuffer)
{
uint16_t tmpstatus = 0x0000;
StatusBytes *status=(StatusBytes *)&tmpstatus;
SPI_ENTER_CRITICAL();
uint8_t header[2];
uint8_t dummy=0xFF;
/* Built the header bytes */
header[0]=READ_HEADER;
header[1]=LINEAR_FIFO_ADDRESS;
/* Put the SPI chip select low to start the transaction */
SpiritSPICSLow();
for(volatile uint16_t i=0;i<CS_TO_SCLK_DELAY;i++);
/* Write the header bytes and read the SPIRIT status bytes */
for(int i=0; i<2; i++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header[i]);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
tmpstatus += ((uint16_t)(SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB)))<<(i*8);
}
/* Read the data from the FIFO according to the number of bytes */
for(int index=0; index<cNbBytes; index++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, dummy);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
*pcBuffer = SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB);
pcBuffer++;
}
/* To be sure to don't rise the Chip Select before the end of last sending */
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
/* Put the SPI chip select high to end the transaction */
SpiritSPICSHigh();
SPI_EXIT_CRITICAL();
return *status;
}
/**
* @brief Write single or multiple SPIRIT register
* @param cRegAddress: base register's address to be write
* @param cNbBytes: number of registers and bytes to be write
* @param pcBuffer: pointer to the buffer of values have to be written into registers
* @retval SPIRIT status
*/
StatusBytes SdkEvalSpiWriteRegisters(uint8_t cRegAddress, uint8_t cNbBytes, uint8_t* pcBuffer)
{
uint8_t header[2];
uint16_t tmpstatus = 0x0000;
StatusBytes *status=(StatusBytes *)&tmpstatus;
/* Built the header bytes */
header[0]=WRITE_HEADER;
header[1]=cRegAddress;
SPI_ENTER_CRITICAL();
/* Puts the SPI chip select low to start the transaction */
SpiritSPICSLow();
for(volatile uint16_t i=0;i<CS_TO_SCLK_DELAY;i++);
/* Writes the header bytes and read the SPIRIT status bytes */
for(int i=0; i<2; i++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header[i]);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
tmpstatus += ((uint16_t)(SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB)))<<(i*8);
}
/* Writes the registers according to the number of bytes */
for(int index=0; index<cNbBytes; index++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, pcBuffer[index]);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB);
}
/* Puts the SPI chip select high to end the transaction */
SpiritSPICSHigh();
/* To be sure to don't rise the Chip Select before the end of last sending */
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_EXIT_CRITICAL();
return *status;
}
/**
* @brief Send a command
* @param cCommandCode: command code to be sent
* @retval SPIRIT status
*/
SpiritStatus SpiritSpiCommandStrobes(uint8_t cCommandCode)
{
uint8_t header[2];
uint16_t tmpstatus = 0x0000;
SpiritStatus *status=(SpiritStatus *)&tmpstatus;
int i;
/* Built the header bytes */
header[0]=COMMAND_HEADER;
header[1]=cCommandCode;
SPI_ENTER_CRITICAL();
/* Puts the SPI chip select low to start the transaction */
SpiritSPICSLow();
{
volatile uint16_t iv;
for(iv = 0; iv < CS_TO_SCLK_DELAY; iv++);
}
/* Writes the header bytes and read the SPIRIT status bytes */
for(i=0; i<2; i++)
{
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
SPI_SendData(SPIRIT_SPI_PERIPH_NB, header[i]);
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_RXNE) == RESET);
tmpstatus += ((uint16_t)(SPI_ReceiveData(SPIRIT_SPI_PERIPH_NB)))<<((1-i)*8);
}
while (SPI_GetFlagStatus(SPIRIT_SPI_PERIPH_NB, SPI_FLAG_TXE) == RESET);
/* Puts the SPI chip select high to end the transaction */
SpiritSPICSHigh();
SPI_EXIT_CRITICAL();
return *status;
}