/********************************************************************//**
* @brief Initializes the SPIx peripheral according to the specified
* parameters in the UART_ConfigStruct.
* @param[in] SPIx SPI peripheral selected, should be SPI
* @param[in] SPI_ConfigStruct Pointer to a SPI_CFG_Type structure
* that contains the configuration information for the
* specified SPI peripheral.
* @return None
*********************************************************************/
void SPI_Init(LPC_SPI_TypeDef *SPIx, SPI_CFG_Type *SPI_ConfigStruct)
{
uint32_t tmp;
CHECK_PARAM(PARAM_SPIx(SPIx));
if(SPIx == LPC_SPI){
/* Set up clock and power for UART module */
CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSPI, ENABLE);
} else {
return;
}
// Configure SPI, interrupt is disable as default
tmp = ((SPI_ConfigStruct->CPHA) | (SPI_ConfigStruct->CPOL) \
| (SPI_ConfigStruct->DataOrder) | (SPI_ConfigStruct->Databit) \
| (SPI_ConfigStruct->Mode) | SPI_SPCR_BIT_EN) & SPI_SPCR_BITMASK;
tmp |= 0x800;
// write back to SPI control register
SPIx->SPCR = tmp;
if (SPI_ConfigStruct->Databit > SPI_DATABIT_8){
spidat.dataword = 1;
} else {
spidat.dataword = 0;
}
// Set clock rate for SPI peripheral
SPI_SetClock(SPIx, SPI_ConfigStruct->ClockRate);
// If interrupt flag is set, Write '1' to Clear interrupt flag
if (SPIx->SPINT & SPI_SPINT_INTFLAG){
SPIx->SPINT = SPI_SPINT_INTFLAG;
}
}
/*----------------------------------------------------------------------------
SPI Serial Device "LPC17xx"
Set Baudrate
*----------------------------------------------------------------------------*/
static int SpiDev_SetBaudrate (unsigned int Baudrate) {
if (SpiInfo.State != _STATE_INITIALIZED_) {
return (-1); /* Device not initialized */
}
SPI_SetClock(SpiInfo.pSpi, Baudrate);
return(0); /* Success */
}
/********************************************************************//**
* @brief Initializes the SPIx peripheral according to the specified
* parameters in the UART_ConfigStruct.
* @param[in] SPIx SPI peripheral selected, should be SPI
* @param[in] SPI_ConfigStruct Pointer to a SPI_CFG_Type structure
* that contains the configuration information for the
* specified SPI peripheral.
* @return None
*********************************************************************/
void SPI_Init(SPI_TypeDef *SPIx, SPI_CFG_Type *SPI_ConfigStruct)
{
SPI_PinCFG_Type defaultSPIPinCfg;
uint32_t tmp;
CHECK_PARAM(PARAM_SPIx(SPIx));
if(SPIx == SPI)
{
/* Set up clock and power for UART module */
CLKPWR_ConfigPPWR (CLKPWR_PCONP_PCSPI, ENABLE);
/* As default, peripheral clock for UART0 module
* is set to FCCLK / 2 */
CLKPWR_SetPCLKDiv(CLKPWR_PCLKSEL_SPI, CLKPWR_PCLKSEL_CCLK_DIV_2);
// Set UART0 function pin as default
defaultSPIPinCfg.SCK_Pin = SPI_SCK_P0_15;
defaultSPIPinCfg.SSEL_Pin = SPI_SSEL_P0_16;
defaultSPIPinCfg.MISO_Pin = SPI_MISO_P0_17;
defaultSPIPinCfg.MOSI_Pin = SPI_MOSI_P0_18;
SPI_PinConfig(SPIx, &defaultSPIPinCfg, SPI_ConfigStruct->Mode);
}
// Configure SPI, interrupt is disable as default
tmp = ((SPI_ConfigStruct->CPHA) | (SPI_ConfigStruct->CPOL) \
| (SPI_ConfigStruct->DataOrder) | (SPI_ConfigStruct->Databit) \
| (SPI_ConfigStruct->Mode) | SPI_SPCR_BIT_EN) & SPI_SPCR_BITMASK;
// write back to SPI control register
SPIx->SPCR = tmp;
// Set clock rate for SPI peripheral
SPI_SetClock(SPIx, SPI_ConfigStruct->ClockRate);
// If interrupt flag is set, Write '1' to Clear interrupt flag
if (SPIx->SPINT & SPI_SPINT_INTFLAG)
{
SPIx->SPINT = SPI_SPINT_INTFLAG;
}
}
