//! Sets Communication speed for SWD, CF V2, 3 & 4 targets
//!
//! @param freq => Frequency on kHz (0 => use default value)
//!
//! @return \ref BDM_RC_OK => Success \n
//! \ref BDM_RC_ILLEGAL_PARAMS => Speed is not supported
//!
uint8_t spi_setSpeed(uint16_t freq) {
if (freq == 0) {
freq = DEFAULT_SPI_FREQUENCY;
}
unsigned index;
for(index=0; index<sizeof(spiBaudTable)/sizeof(spiBaudTable[0]); index++) {
if (spiBaudTable[index].freq <= freq) {
break;
}
}
if (index>=sizeof(spiBaudTable)/sizeof(spiBaudTable[0])) {
return BDM_RC_ILLEGAL_PARAMS;
}
// Enable SPI module clock
SPI_CLK_ENABLE();
bitDelay = 0;
cable_status.sync_length = spiBaudTable[index].freq;
spiBaudValue = spiBaudTable[index].ctarBaud;
spi_setCTAR0(ctar0Value);
spi_setCTAR1(ctar1Value);
return BDM_RC_OK;
}
void spiInit(void)
{
SIGNAL_TIMER_CHANNEL_GPIO_PORT();
SPI_CLK_ENABLE();
GPIO_InitTypeDef spiGpioInit = { 0 };
// SPI has GPIOB 3..5
spiGpioInit.Pin = GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5;
spiGpioInit.Mode = GPIO_MODE_AF_PP;
spiGpioInit.Pull = GPIO_NOPULL;
HAL_GPIO_Init(SPI_GPIO_PORT, &spiGpioInit);
// Initialize SPI1 module
g_spiInit.Instance = SPI;
g_spiInit.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_8;
g_spiInit.Init.CLKPhase = SPI_PHASE_1EDGE;
g_spiInit.Init.CLKPolarity = SPI_POLARITY_LOW;
g_spiInit.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
g_spiInit.Init.DataSize = SPI_DATASIZE_8BIT;
g_spiInit.Init.FirstBit = SPI_FIRSTBIT_MSB;
g_spiInit.Init.Mode = SPI_MODE_MASTER;
g_spiInit.Init.NSS = SPI_NSS_SOFT;
g_spiInit.Init.TIMode = SPI_TIMODE_DISABLE;
if (HAL_SPI_Init(&g_spiInit) != HAL_OK)
{
ERROR_SPI(ED_SPI_FAILED_TO_INITIALIZE_SPI);
}
// Initialize DMA for SPI1
g_dmaSpiRx.Instance = SPI_DMA_RX_INSTANCE;
g_dmaSpiRx.Init.Request = DMA_REQUEST_1;
g_dmaSpiRx.Init.Direction = DMA_PERIPH_TO_MEMORY;
g_dmaSpiRx.Init.PeriphInc = DMA_PINC_DISABLE;
g_dmaSpiRx.Init.MemInc = DMA_MINC_ENABLE;
g_dmaSpiRx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
g_dmaSpiRx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
g_dmaSpiRx.Init.Mode = DMA_NORMAL;
g_dmaSpiRx.Init.Priority = DMA_PRIORITY_MEDIUM;
if (HAL_DMA_Init(&g_dmaSpiRx) != HAL_OK)
{
ERROR_SPI(ED_SPI_FAILED_TO_INITIALIZE_SPI);
}
g_dmaSpiTx.Instance = SPI_DMA_TX_INSTANCE;
g_dmaSpiTx.Init.Request = DMA_REQUEST_1;
g_dmaSpiTx.Init.Direction = DMA_MEMORY_TO_PERIPH;
g_dmaSpiTx.Init.PeriphInc = DMA_PINC_DISABLE;
g_dmaSpiTx.Init.MemInc = DMA_MINC_ENABLE;
g_dmaSpiTx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
g_dmaSpiTx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
g_dmaSpiTx.Init.Mode = DMA_NORMAL;
g_dmaSpiTx.Init.Priority = DMA_PRIORITY_MEDIUM;
if (HAL_DMA_Init(&g_dmaSpiTx) != HAL_OK)
{
ERROR_SPI(ED_SPI_FAILED_TO_INITIALIZE_SPI);
}
}
/**
* @brief Initializes the SPI2 for use with FPGA config
* @param None
* @retval None
*/
ErrorStatus SPI2_InitForFpgaConfig()
{
/* Init SPI */
SPI_Handle.Init.FirstBit = SPI_FIRSTBIT_LSB;
SPI_CLK_ENABLE();
HAL_SPI_Init(&SPI_Handle);
return SUCCESS;
}
