// SPI basic Read/Write function
u8 SPI_RW_Byte(SPI_TypeDef* SPIx,unsigned char Byte)
{
while( SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET) __nop();
SPI_I2S_SendData(SPIx, Byte);
while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET) __nop();
return SPI_I2S_ReceiveData(SPIx);
}
void SPI2_EventHandler(void)
{
SPI2_TimeOut=0;
SPI2_Status =0;
//Ricevo il dato dal MOSI
RCHK += (SPI2_Buffer_Rx[RxIdx] = SPI_I2S_ReceiveData(SPI2));
if (RxIdx++==_psize){
if(RCHK==0)
{ //Nuovo Messaggio ricevuto
if( _SPI2_RX_Event) _SPI2_RX_Event();
}
else
{
SPI2_Status =0x80;
}
// *p= (~CHK)+1;
TCHK=RCHK=RxIdx=0;
}
//Preparo il dato sul MISO
TCHK += SPI2_Buffer_Tx[RxIdx];
if (RxIdx==_psize)
{
SPI_I2S_SendData(SPI2, (~TCHK)+1);
}
else
{
SPI_I2S_SendData(SPI2, SPI2_Buffer_Tx[RxIdx]);
}
}
void caribou_spi_select(caribou_spi_t* spi)
{
GPIO_ClearBits(spi->select_port,1<<spi->select_pin);
/* clear the receiver */
while ( SPI_I2S_GetFlagStatus(spi->select_port, SPI_I2S_FLAG_RXNE) == SET )
SPI_I2S_ReceiveData(spi->select_port);
}
u8 SPI_RW(u8 dat)
{
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(SPI1, dat);
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
return SPI_I2S_ReceiveData(SPI1);
}
/**
* Send/Receive 1 Byte through SPI
* @param spi SPI index number (@ref wizpf_spi)
* @param byte 1 Byte to send
* @return Received 1 Byte
*/
uint8 wizpf_spi_byte(wizpf_spi spi, uint8 byte)
{
SPI_TypeDef *SPIx;
switch(spi) {
case WIZ_SPI1:
#if defined(SPI1_SCS_PIN) && defined(SPI1_SCLK_PIN) && defined(SPI1_MISO_PIN) && defined(SPI1_MOSI_PIN)
SPIx = SPI1;
break;
#else
LOG("Not implemented");
return 0;
#endif
case WIZ_SPI2:
#if defined(SPI2_SCS_PIN) && defined(SPI2_SCLK_PIN) && defined(SPI2_MISO_PIN) && defined(SPI2_MOSI_PIN)
SPIx = SPI2;
break;
#else
LOG("Not implemented");
return 0;
#endif
//case WIZ_SPI3:
// break;
default:
ERRA("SPI(%d) is not allowed", spi);
return 0;
}
while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(SPIx, byte);
while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);
return (uint8)SPI_I2S_ReceiveData(SPIx);
}
/**
* @brief This function handles SPI interrupt request.
* @param None
* @retval None
*/
void SPIx_IRQHANDLER(void)
{
#ifdef SPI_SLAVE
/* SPI in Slave Receiver mode--------------------------------------- */
if (SPI_I2S_GetITStatus(SPIx, SPI_I2S_IT_RXNE) == SET)
{
RxBuffer[Rx_Idx++] = SPI_I2S_ReceiveData(SPIx);
}
#endif
#ifdef SPI_MASTER
/* SPI in Master Tramitter mode--------------------------------------- */
if (SPI_I2S_GetITStatus(SPIx, SPI_I2S_IT_TXE) == SET)
{
if (CmdStatus == 0x00)
{
/* Send Transaction code */
SPI_I2S_SendData(SPIx, CmdTransmitted);
CmdStatus = 0x01;
}
else
{
if (Tx_Idx < GetVar_NbrOfData())
{
/* Send Transaction data */
SPI_I2S_SendData(SPIx, TxBuffer[Tx_Idx++]);
}
else
{
/* Disable the Tx buffer empty interrupt */
SPI_I2S_ITConfig(SPIx, SPI_I2S_IT_TXE, DISABLE);
}
}
}
#endif /* SPI_SLAVE */
}
void W5500WriteByte(unsigned char byte)
{
while (SPI_I2S_GetFlagStatus(W5500_SPI, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(W5500_SPI, byte);
while (SPI_I2S_GetFlagStatus(W5500_SPI, SPI_I2S_FLAG_RXNE) == RESET);
SPI_I2S_ReceiveData(W5500_SPI);
}
uint8_t SpiInOut( uint8_t outData )
{
/* Send SPIy data */
SPI_I2S_SendData( SPI_INTERFACE, outData );
while( SPI_I2S_GetFlagStatus( SPI_INTERFACE, SPI_I2S_FLAG_RXNE ) == RESET );
return SPI_I2S_ReceiveData( SPI_INTERFACE );
}
/*************************************************
Function: hw_spi2_writereg
Description:
Input:
Output:
Return:
Others:
*************************************************/
uint16_t hw_spi2_writereg(uint16_t data)
{
while (SPI_I2S_GetFlagStatus(SPI2_SPI, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(SPI2_SPI, data);
while (SPI_I2S_GetFlagStatus(SPI2_SPI, SPI_I2S_FLAG_RXNE) == RESET);
return SPI_I2S_ReceiveData(SPI2_SPI);
}
void SPI1_Set(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, uint8_t adress, uint8_t data){
GPIO_ResetBits(GPIOx, GPIO_Pin); //CS->0
while(!SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE)); //transmit buffer empty?
SPI_I2S_SendData(SPI1, adress);
while(!SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE)); //data received?
SPI_I2S_ReceiveData(SPI1);
while(!SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE)); //transmit buffer empty?
SPI_I2S_SendData(SPI1, data);
while(!SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE)); //data received?
SPI_I2S_ReceiveData(SPI1);
GPIO_SetBits(GPIOx, GPIO_Pin); //CS->1
}
static uint8_t spiWriteRead(uint8_t data)
{
SPI_I2S_SendData(SPI1, data);
while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET) {}
data = (uint8_t)SPI_I2S_ReceiveData(SPI1);
return data;
}
/**
* @brief Sends a Byte through the SPI interface and return the Byte received
* from the SPI bus.
* @param Byte : Byte send.
* @retval The received byte value
*/
static uint8_t BMA250E_SendByte(uint8_t byte)
{
/* Loop while DR register in not empty */
BMA250ETimeout = BMA250E_FLAG_TIMEOUT;
while (SPI_I2S_GetFlagStatus(BMA250E_SPI, SPI_I2S_FLAG_TXE) == RESET)
{
#ifdef USE_DEFAULT_TIMEOUT_CALLBACK
if((BMA250ETimeout--) == 0) return BMA250E_TIMEOUT_UserCallback();
#endif
}
/* Send a Byte through the SPI peripheral */
SPI_I2S_SendData(BMA250E_SPI, (uint16_t)byte);
/* Wait to receive a Byte */
BMA250ETimeout = BMA250E_FLAG_TIMEOUT;
while (SPI_I2S_GetFlagStatus(BMA250E_SPI, SPI_I2S_FLAG_RXNE) == RESET)
{
#ifdef USE_DEFAULT_TIMEOUT_CALLBACK
if((BMA250ETimeout--) == 0) return BMA250E_TIMEOUT_UserCallback();
#endif
}
/* Return the Byte read from the SPI bus */
return (uint8_t)SPI_I2S_ReceiveData(BMA250E_SPI);
}
char jbSPIReceive(SPI_TypeDef* SPIx)
{
while(!SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE)); // Wait until it resets itself
SPI_I2S_SendData(SPIx, 0x00);
while(!SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE));
return (char)SPI_I2S_ReceiveData(SPIx);
}
uint8_t SPI_Read_One_Byte(SPI_TypeDef *SPIx)
{
/* wait untill Receive one byte */
while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);
/* Receive a Byte through the SPI peripheral */
return SPI_I2S_ReceiveData(SPIx);
}
unsigned char W5500ReadByte(void)
{
while (SPI_I2S_GetFlagStatus(W5500_SPI, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(W5500_SPI, 0xff);
while (SPI_I2S_GetFlagStatus(W5500_SPI, SPI_I2S_FLAG_RXNE) == RESET);
return SPI_I2S_ReceiveData(W5500_SPI);
}
/**
* @brief Send one Byte through the SPI interface and return the received Byte
* @param uint8_t byte The byte to send
* @retval uint8_t The received byte value
*/
static uint8_t _LIS302DL_SendByte(SPI_TypeDef* spi, uint8_t byte) {
volatile uint32_t _LIS302DL_Timeout = LIS302DL_MAX_TIMEOUT;
// Loop while DR register in not empty; or we ran into a timeout
_LIS302DL_Timeout = LIS302DL_MAX_TIMEOUT;
while (SPI_I2S_GetFlagStatus(spi, SPI_I2S_FLAG_TXE) == RESET) {
if ((_LIS302DL_Timeout--) == 0) {
return LIS302DL_TIMEOUT_UserCallback();
}
}
// Send a Byte through the SPI peripheral
SPI_I2S_SendData(spi, byte);
// Wait to receive a Byte; or we ran into a timeout
_LIS302DL_Timeout = LIS302DL_MAX_TIMEOUT;
while (SPI_I2S_GetFlagStatus(spi, SPI_I2S_FLAG_RXNE) == RESET) {
if ((_LIS302DL_Timeout--) == 0) {
return LIS302DL_TIMEOUT_UserCallback();
}
}
/* Return the Byte read from the SPI bus */
return (uint8_t)SPI_I2S_ReceiveData(spi);
}
uint8 wizspi_byte(uint8 byte)
{
while (SPI_I2S_GetFlagStatus(wizspix, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(wizspix, byte);
while (SPI_I2S_GetFlagStatus(wizspix, SPI_I2S_FLAG_RXNE) == RESET);
return SPI_I2S_ReceiveData(wizspix);
}
/**
* @brief This function handles SPI interrupt request.
* @param None
* @retval None
*/
void SPIx_IRQHANDLER(void)
{
/* SPI in Receiver mode */
if (SPI_I2S_GetITStatus(SPIx, SPI_I2S_IT_RXNE) == SET)
{
if (ubRxIndex < BUFFERSIZE)
{
/* Receive Transaction data */
aRxBuffer[ubRxIndex++] = SPI_I2S_ReceiveData(SPIx);
}
else
{
/* Disable the Rx buffer not empty interrupt */
SPI_I2S_ITConfig(SPIx, SPI_I2S_IT_RXNE, DISABLE);
}
}
/* SPI in Transmitter mode */
if (SPI_I2S_GetITStatus(SPIx, SPI_I2S_IT_TXE) == SET)
{
if (ubTxIndex < BUFFERSIZE)
{
/* Send Transaction data */
SPI_I2S_SendData(SPIx, aTxBuffer[ubTxIndex++]);
}
else
{
/* Disable the Tx buffer empty interrupt */
SPI_I2S_ITConfig(SPIx, SPI_I2S_IT_TXE, DISABLE);
}
}
}
static uint8_t sendByte(uint8_t byte) {
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET){};
SPI_I2S_SendData(SPI2,byte);
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET){};
return(SPI_I2S_ReceiveData(SPI2));
}
/**
* @brief This function handles SPI interrupt request.
* @param None
* @retval None
*/
void BSP_SPIx_IRQHANDLER(void)
{
//Debug_ShowRegister( SPI2_BASE, (DebugPeripheralTypedef *)&DeBugSPI );
/* SPI in Receiver mode */
if (SPI_I2S_GetITStatus(BSP_SPIx, SPI_I2S_IT_RXNE) == SET)
{
if (ubRxIndex < BUFFERSIZE)
{
/* Receive Transaction data */
aRxBuffer[ubRxIndex++] = SPI_I2S_ReceiveData(BSP_SPIx);
}
else
{
/* Disable the Rx buffer not empty interrupt */
SPI_I2S_ITConfig(BSP_SPIx, SPI_I2S_IT_RXNE, DISABLE);
}
}
/* SPI in Transmitter mode */
if (SPI_I2S_GetITStatus(BSP_SPIx, SPI_I2S_IT_TXE) == SET)
{
if (ubTxIndex < BUFFERSIZE)
{
/* Send Transaction data */
SPI_I2S_SendData(BSP_SPIx, aTxBuffer[ubTxIndex++]);
}
else
{
/* Disable the Tx buffer empty interrupt */
SPI_I2S_ITConfig(BSP_SPIx, SPI_I2S_IT_TXE, DISABLE);
}
}
}
uint8_t spiTransfer(uint8_t *out, uint8_t *in, int len)
{
uint16_t spiTimeout;
uint8_t b;
SPI_BUSE->DR;
while (len--) {
b = in ? *(in++) : 0xFF;
spiTimeout = 1000;
while (SPI_I2S_GetFlagStatus(SPI_BUSE, SPI_I2S_FLAG_TXE) == RESET) {
if ((spiTimeout--) == 0)
return spiTimeoutUserCallback();
}
SPI_I2S_SendData(SPI_BUSE, b);
spiTimeout = 1000;
while (SPI_I2S_GetFlagStatus(SPI_BUSE, SPI_I2S_FLAG_RXNE) == RESET) {
if ((spiTimeout--) == 0)
return spiTimeoutUserCallback();
}
b = SPI_I2S_ReceiveData(SPI_BUSE);
if (out)
*(out++) = b;
}
return true;
}
bool spiTransfer(SPI_TypeDef *instance, uint8_t *out, const uint8_t *in, int len)
{
uint16_t spiTimeout = 1000;
uint8_t b;
instance->DR;
while (len--) {
b = in ? *(in++) : 0xFF;
while (SPI_I2S_GetFlagStatus(instance, SPI_I2S_FLAG_TXE) == RESET) {
if ((spiTimeout--) == 0)
return spiTimeoutUserCallback(instance);
}
#ifdef STM32F303xC
SPI_SendData8(instance, b);
#else
SPI_I2S_SendData(instance, b);
#endif
spiTimeout = 1000;
while (SPI_I2S_GetFlagStatus(instance, SPI_I2S_FLAG_RXNE) == RESET) {
if ((spiTimeout--) == 0)
return spiTimeoutUserCallback(instance);
}
#ifdef STM32F303xC
b = SPI_ReceiveData8(instance);
#else
b = SPI_I2S_ReceiveData(instance);
#endif
if (out)
*(out++) = b;
}
return true;
}
/**
* @brief Writes and receives data from the SPI
* @param Data: data to be written to the SPI
* @retval The received data
*/
uint8_t SPI1_WriteRead(uint8_t Data)
{
#if 0 /* This adds overhead */
/* Loop while DR register is not empty */
while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_TXE) == RESET);
/* Send byte through the SPIx peripheral */
SPI_I2S_SendData(SPIx, (uint16_t)Data);
/* Wait to receive a byte */
while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);
/* Return the byte read from the SPI bus */
return SPI_I2S_ReceiveData(SPIx);
#endif
#if 1 /* This is faster */
/* Loop while DR register is not empty */
while ((SPIx->SR & SPI_I2S_FLAG_TXE) == RESET);
/* Send byte through the SPIx peripheral */
SPIx->DR = Data;
/* Wait to receive a byte */
while ((SPIx->SR & SPI_I2S_FLAG_RXNE) == RESET);
return SPIx->DR;
#endif
}
bool spiTransfer(uint8_t *out, uint8_t *in, int len)
{
uint8_t b;
SPI2->DR;
while (len--) {
b = in ? *(in++) : 0xFF;
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
#ifdef STM32F303xC
SPI_I2S_SendData16(SPI2, b);
#endif
#ifdef STM32F10X_MD
SPI_I2S_SendData(SPI2, b);
#endif
while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
#ifdef STM32F303xC
b = SPI_I2S_ReceiveData16(SPI2);
#endif
#ifdef STM32F10X_MD
b = SPI_I2S_ReceiveData(SPI2);
#endif
if (out)
*(out++) = b;
}
return true;
}
uint8_t spi_read_write_byte(uint8_t txData)
{
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(SPI1, txData);
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
return SPI_I2S_ReceiveData(SPI1);
}
void DMA1_Stream4_IRQHandler(void)
{
u16 i;
u8 tmp;
if(DMA_GetITStatus(DMA1_Stream4, DMA_IT_TCIF4) == SET)
{
TP3_L;
DMA_ClearITPendingBit(DMA1_Stream4, DMA_IT_TCIF4);
for(i=0;i<200;i++)
{
__nop();
}
DMA_Cmd(DMA1_Stream4,DISABLE);
SPI_I2S_DMACmd(SPIFLASH_SPI,SPI_I2S_DMAReq_Tx,DISABLE);
tmp=SPI_I2S_ReceiveData(SPIFLASH_SPI);
SPIFLASH_CS_H;
DMA_Tx_Busy = 0;
TP3_H;
}
else if(DMA_GetITStatus(DMA1_Stream4,DMA_IT_TEIF4) == SET)
{
__nop();
DMA_ClearITPendingBit(DMA1_Stream4, DMA_IT_TEIF4);
}
}
uint8_t uSpiRead( SPI_TypeDef* SPIx )
{
/* Wait until transmission complete */
while( !SPI_I2S_GetFlagStatus( SPIx, SPI_I2S_FLAG_RXNE ) );
return SPI_I2S_ReceiveData( SPIx );
}
static void WR_CMD (uint8_t cmd)
{
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
SPI_I2S_SendData(SPI1,cmd);
while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
SPI_I2S_ReceiveData(SPI1);
}
/*! ------------------------------------------------------------------------------------------------------------------
* Function: writetospi()
*
* Low level abstract function to write to the SPI
* Takes two separate byte buffers for write header and write data
* returns 0 for success, or -1 for error
*/
int writetospi
(
uint16 headerLength,
const uint8 *headerBuffer,
uint32 bodylength,
const uint8 *bodyBuffer
)
{
int i=0;
decaIrqStatus_t stat ;
stat = decamutexon() ;
/* Wait for SPIx Tx buffer empty */
//while (port_SPIx_busy_sending());
dw_set_device_select(); //cs low
for(i=0; i<headerLength; i++)
{
while (SPI_I2S_GetFlagStatus(DW1000_SPI, SPI_I2S_FLAG_TXE) == RESET){}
SPI_I2S_SendData(DW1000_SPI, headerBuffer[i]);
//port_SPIx_send_data(headerBuffer[i]); //send data on the SPI
while (SPI_I2S_GetFlagStatus(DW1000_SPI, SPI_I2S_FLAG_RXNE) == RESET){}
SPI_I2S_ReceiveData(DW1000_SPI);
}
for(i=0; i<bodylength; i++)
{
while (SPI_I2S_GetFlagStatus(DW1000_SPI, SPI_I2S_FLAG_TXE) == RESET){}
SPI_I2S_SendData(DW1000_SPI, bodyBuffer[i]);
//port_SPIx_send_data(bodyBuffer[i]); //send data on the SPI
while (SPI_I2S_GetFlagStatus(DW1000_SPI, SPI_I2S_FLAG_RXNE) == RESET){}
SPI_I2S_ReceiveData(DW1000_SPI);
//while (port_SPIx_no_data()); //wait for rx buffer to fill
//port_SPIx_receive_data(); //this clears RXNE bit
}
dw_reset_device_select(); //CS high
decamutexoff(stat) ;
return 0;
} // end writetospi()
kick_scheduler_t spi_isr() {
#ifdef SPI_IN_INTERRUPT_MODE
// save the byte just received in the RX buffer
switch (spi_vars.returnType) {
case SPI_FIRSTBYTE:
if (spi_vars.numTxedBytes==0) {
*spi_vars.pNextRxByte = SPI_I2S_ReceiveData(SPI2);
}
break;
case SPI_BUFFER:
*spi_vars.pNextRxByte = SPI_I2S_ReceiveData(SPI2);
spi_vars.pNextRxByte++;
break;
case SPI_LASTBYTE:
*spi_vars.pNextRxByte = SPI_I2S_ReceiveData(SPI2);
break;
}
// one byte less to go
spi_vars.pNextTxByte++;
spi_vars.numTxedBytes++;
spi_vars.txBytesLeft--;
if (spi_vars.txBytesLeft>0) {
// write next byte to TX buffer
SPI_SendData(SPI2,*spi_vars.pNextTxByte);
} else {
// put CS signal high to signal end of transmission to slave
if (spi_vars.isLast==SPI_LAST) {
GPIO_SetBits(GPIOA, GPIO_Pin_4);
}
// SPI is not busy anymore
spi_vars.busy = 0;
// SPI is done!
if (spi_vars.callback!=NULL) {
// call the callback
spi_vars.callback();
// kick the OS
return 1;
}
}
#else
while(1);// this should never happen
#endif
}