OSStatus host_platform_spi_transfer( bus_transfer_direction_t dir, uint8_t* buffer, uint16_t buffer_length )
{
OSStatus result;
int i;
for(i=0; i<buffer_length; i++) {
buffer_temp_32[i] = SPI0_TXCMD | (uint32_t)buffer[i];;
}
dmaSPITX.dmaChStcd = (edma_software_tcd_t *)mem_align(2 * sizeof(edma_software_tcd_t) * dmaSPITX.period, 32);
dmaSPITX.srcAddr = (uint32_t)buffer_temp_32;
dmaSPITX.length = buffer_length * 4;
dmaSPIRX.dmaChStcd = (edma_software_tcd_t *)mem_align(2 * sizeof(edma_software_tcd_t) * dmaSPIRX.period, 32);
dmaSPIRX.destAddr = (uint32_t)buffer;
dmaSPIRX.length = buffer_length;
MCU_CLOCKS_NEEDED();
SPI0_CS_ENABLE;
setup_edma_loop(&dmaSPITX);
setup_edma_loop(&dmaSPIRX);
EDMA_DRV_StartChannel(dmaSPIRX.dmaCh);
EDMA_DRV_StartChannel(dmaSPITX.dmaCh);
result = mico_rtos_get_semaphore( &spi_transfer_finished_semaphore, 100 );
disable_edma_loop(&dmaSPIRX);
disable_edma_loop(&dmaSPITX);
SPI0_CS_DISABLE;
MCU_CLOCKS_NOT_NEEDED();
free_align(dmaSPITX.dmaChStcd);
free_align(dmaSPIRX.dmaChStcd);
return result;
}
/** @brief Enables the MCU to enter deep sleep mode when all threads are suspended.
*
* @note: When all threads are suspended, mcu can shut down some peripherals to
* save power. For example, STM32 enters STOP mode in this condition,
* its peripherals are not working and needs to be wake up by an external
* interrupt or MICO core's internal timer. So if you are using a peripherals,
* you should disable this function temporarily.
* To make this function works, you should not disable the macro in MicoDefault.h:
* MICO_DISABLE_MCU_POWERSAVE
*
* @param enable : 1 = enable MCU powersave, 0 = disable MCU powersave
* @return none
*/
void MicoMcuPowerSaveConfig( int enable ){
if (enable == 1)
MCU_CLOCKS_NOT_NEEDED();
else
MCU_CLOCKS_NEEDED();
}
OSStatus host_platform_bus_init( void )
{
OSStatus result;
MCU_CLOCKS_NEEDED();
result = mico_rtos_init_semaphore( &sdio_transfer_finished_semaphore, 1);
//result = mico_rtos_set_semaphore( &sdio_transfer_finished_semaphore);
if ( result != kNoErr )
{
return result;
}
// mico_rtos_get_semaphore( &sdio_transfer_finished_semaphore, (uint32_t) 10000 );
GpioSdIoConfig(1);
SdioControllerInit();
SdioSetClk(0);
NVIC_EnableIRQ(SD_IRQn);
//SdioEnableClk();
MCU_CLOCKS_NOT_NEEDED();
return kNoErr;
}
OSStatus host_platform_bus_deinit( void )
{
MCU_CLOCKS_NEEDED();
DSPI_DRV_MasterDeinit(0);
MCU_CLOCKS_NOT_NEEDED();
mico_rtos_deinit_semaphore(&spi_transfer_finished_semaphore);
return kNoErr;
}
OSStatus host_platform_bus_deinit( void )
{
MCU_CLOCKS_NEEDED();
#ifdef USE_OWN_SPI_DRV
pdc_disable_transfer(spi_m_pdc, PERIPH_PTCR_RXTDIS | PERIPH_PTCR_TXTDIS);
spi_disable(SPI_MASTER_BASE);
#else
spi_master_vec_disable(&spi_master);
#endif
MCU_CLOCKS_NOT_NEEDED();
return kNoErr;
}
OSStatus host_platform_bus_init( void )
{
edma_user_config_t g_edmaUserConfig;
/* Create a semephore to check for completed eDMA transfers. */
mico_rtos_init_semaphore(&spi_transfer_finished_semaphore, 1);
MCU_CLOCKS_NEEDED();
configure_spi_pins(0); // initlize spi0 GPIO
PORT_HAL_SetMuxMode(PORTD_BASE,0u,kPortMuxAsGpio); // configure CS as gpio, use software configure CS.
GPIO_DRV_OutputPinInit(&spiCsPin[0]);
SPI0_CS_DISABLE;
/* Initialize eDMA & DMAMUX */
g_edmaUserConfig.chnArbitration = kEDMAChnArbitrationRoundrobin;
g_edmaUserConfig.notHaltOnError = false;
EDMA_DRV_Init(&g_edmaState, &g_edmaUserConfig);
/* DSPI Master Configuration */
dspi_edma_master_setup(&dspiMasterState, 0, 10000000, 8);
MCU_CLOCKS_NOT_NEEDED();
dmaSPITX.dmaChanNum = DMA_CH0;
dmaSPITX.dmaCh = &dmaCh0;
dmaSPITX.type = kEDMAMemoryToPeripheral;
dmaSPITX.chSource = kDmaRequestMux0SPI0Tx;
dmaSPITX.srcAddr = (uint32_t)NULL;
dmaSPITX.destAddr = (uint32_t)&SPI0->PUSHR;
dmaSPITX.length = 0;
dmaSPITX.size = 4;
dmaSPITX.watermark = 4;
dmaSPITX.period = 0x01U;
dmaSPITX.dmaCallBack = stop_edma_loop;
dmaSPIRX.dmaChanNum = DMA_CH1;
dmaSPIRX.dmaCh = &dmaCh1;
dmaSPIRX.type = kEDMAPeripheralToMemory;
dmaSPIRX.chSource = kDmaRequestMux0SPI0Rx;
dmaSPIRX.srcAddr = (uint32_t)&SPI0->POPR;
dmaSPIRX.destAddr = (uint32_t)NULL;
dmaSPIRX.length = 0;
dmaSPIRX.size = 1;
dmaSPIRX.watermark = 1;
dmaSPIRX.period = 0x01U;
dmaSPIRX.dmaCallBack = stop_edma_loop_putsem;
dmaSPIRX.dmaChStcd = (edma_software_tcd_t *)mem_align(2 * sizeof(edma_software_tcd_t) * dmaSPIRX.period, 32);
spi_status_print(SPI0);
return kNoErr;
}
OSStatus host_platform_spi_transfer( bus_transfer_direction_t dir, uint8_t* buffer, uint16_t buffer_length )
{
OSStatus result;
uint32_t junk;
MCU_CLOCKS_NEEDED();
SPIX_DMA_TX_STREAM->NDTR = buffer_length;
SPIX_DMA_TX_STREAM->M0AR = (uint32_t) buffer;
if ( dir == BUS_READ )
{
SPIX_DMA_RX_STREAM->NDTR = buffer_length;
SPIX_DMA_RX_STREAM->M0AR = (uint32_t) buffer;
SPIX_DMA_RX_STREAM->CR |= DMA_MemoryInc_Enable | ( 1 << 4);
}
else
{
SPIX_DMA_RX_STREAM->NDTR = buffer_length;
SPIX_DMA_RX_STREAM->M0AR = (uint32_t) &junk;
SPIX_DMA_RX_STREAM->CR &= ( ~DMA_MemoryInc_Enable ) | ( 1 << 4);
}
GPIO_ResetBits( SPI_BUS_CS_BANK, ( 1 << SPI_BUS_CS_PIN ) ); /* CS low (to select) */
DMA_Cmd( SPIX_DMA_RX_STREAM, ENABLE );
DMA_Cmd( SPIX_DMA_TX_STREAM, ENABLE );
/* Wait for DMA TX to complete */
result = mico_rtos_get_semaphore( &spi_transfer_finished_semaphore, 100 );
// loop_count = 0;
// while ( ( DMA_GetFlagStatus( SPIX_DMA_RX_STREAM, DMA_FLAG_TCIF3 ) == RESET ) && ( loop_count < (uint32_t) DMA_TIMEOUT_LOOPS ) )
// {
// loop_count++;
// }
DMA_Cmd( SPIX_DMA_RX_STREAM, DISABLE );
DMA_Cmd( SPIX_DMA_TX_STREAM, DISABLE );
/* Clear the CS pin and the DMA status flag */
GPIO_SetBits( SPI_BUS_CS_BANK, ( 1 << SPI_BUS_CS_PIN ) ); /* CS high (to deselect) */
DMA_ClearFlag( SPIX_DMA_RX_STREAM, SPIX_DMA_RX_TCFLAG );
DMA_ClearFlag( SPIX_DMA_TX_STREAM, SPIX_DMA_TX_TCFLAG );
MCU_CLOCKS_NOT_NEEDED();
return result;
}
OSStatus host_platform_bus_deinit( void )
{
GPIO_InitTypeDef gpio_init_structure;
MCU_CLOCKS_NEEDED();
/* Disable SPI and SPI DMA */
SPI_Cmd( SPIX, DISABLE );
SPI_I2S_DeInit( SPIX );
SPI_I2S_DMACmd( SPIX, SPI_I2S_DMAReq_Tx | SPI_I2S_DMAReq_Rx, DISABLE );
DMA_DeInit( SPIX_DMA_TX_STREAM );
DMA_DeInit( SPIX_DMA_RX_STREAM );
/* Clear GPIO_B[1:0] */
MicoGpioFinalize( (mico_gpio_t)WL_GPIO0 );
MicoGpioFinalize( (mico_gpio_t)WL_GPIO1 );
/* Clear SPI slave select GPIOs */
gpio_init_structure.GPIO_Mode = GPIO_Mode_AIN;
gpio_init_structure.GPIO_OType = GPIO_OType_PP;
gpio_init_structure.GPIO_Speed = GPIO_Speed_100MHz;
gpio_init_structure.GPIO_Pin = ( 1 << SPI_BUS_CS_PIN );
GPIO_Init( SPI_BUS_CS_BANK, &gpio_init_structure );
/* Clear the SPI lines */
gpio_init_structure.GPIO_Mode = GPIO_Mode_AIN;
gpio_init_structure.GPIO_OType = GPIO_OType_PP;
gpio_init_structure.GPIO_Speed = GPIO_Speed_100MHz;
gpio_init_structure.GPIO_Pin = ( 1 << SPI_BUS_CLOCK_PIN ) | ( 1 << SPI_BUS_MISO_PIN ) | ( 1 << SPI_BUS_MOSI_PIN );
GPIO_Init( SPI_BUS_CLOCK_BANK, &gpio_init_structure );
gpio_irq_disable( SPI_IRQ_BANK, SPI_IRQ_PIN );
/* Disable SPI_SLAVE Periph clock and DMA1 clock */
RCC_APB1PeriphClockCmd( SPIX_CLK, DISABLE );
RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_DMA1, DISABLE );
RCC_APB2PeriphClockCmd( RCC_APB2Periph_SYSCFG, DISABLE );
MCU_CLOCKS_NOT_NEEDED();
return kNoErr;
}
OSStatus host_platform_spi_transfer( bus_transfer_direction_t dir, uint8_t* buffer, uint16_t buffer_length )
{
OSStatus result;
uint8_t *junk;
MCU_CLOCKS_NEEDED();
#ifdef USE_OWN_SPI_DRV
pdc_packet_t pdc_spi_packet;
pdc_spi_packet.ul_addr = (uint32_t)buffer;
pdc_spi_packet.ul_size = buffer_length;
pdc_tx_init(spi_m_pdc, &pdc_spi_packet, NULL);
if ( dir == BUS_READ ) {
pdc_spi_packet.ul_addr = (uint32_t)buffer;
pdc_spi_packet.ul_size = buffer_length;
}
if ( dir == BUS_WRITE ) {
junk = malloc(buffer_length);
pdc_spi_packet.ul_addr = (uint32_t)junk;
pdc_spi_packet.ul_size = buffer_length;
}
pdc_rx_init(spi_m_pdc, &pdc_spi_packet, NULL);
#if 0
if ( dir == BUS_WRITE ) {
spi_enable_interrupt(SPI_MASTER_BASE, SPI_IER_ENDTX);
NVIC_EnableIRQ(SPI_IRQn);
}
else {
spi_enable_interrupt(SPI_MASTER_BASE, SPI_IER_ENDRX);
NVIC_EnableIRQ(SPI_IRQn);
}
#endif
//platform_log("dir = %d, len = %d",dir, buffer_length);//TBD
#ifndef HARD_CS_NSS0
mico_gpio_output_low( MICO_GPIO_15 );
#endif
/* Enable the RX and TX PDC transfer requests */
pdc_enable_transfer(spi_m_pdc, PERIPH_PTCR_TXTEN | PERIPH_PTCR_RXTEN);//pdc buffer address increase automatic.
//platform_log("pdc status = 0x%x",pdc_read_status(spi_m_pdc));
#ifndef NO_MICO_RTOS
result = mico_rtos_get_semaphore( &spi_transfer_finished_semaphore, 100 );
#else
/* Waiting transfer done*/
while((spi_read_status(SPI_MASTER_BASE) & SPI_SR_RXBUFF) == 0) {
__asm("wfi");
}
#endif
if ( dir == BUS_WRITE ) {
if (junk)
free(junk);
}
/* Disable the RX and TX PDC transfer requests */
pdc_disable_transfer(spi_m_pdc, PERIPH_PTCR_RXTDIS | PERIPH_PTCR_TXTDIS);
#ifndef HARD_CS_NSS0
mico_gpio_output_high( MICO_GPIO_15 );
#endif
#if 1
//clear PDC Perph Status flags
pdc_spi_packet.ul_addr = NULL;
pdc_spi_packet.ul_size = 3;
pdc_tx_init(spi_m_pdc, &pdc_spi_packet, NULL);
pdc_rx_init(spi_m_pdc, &pdc_spi_packet, NULL);
#endif
#else //spi_master_vec :
tx_dscr[0].data = buffer;
tx_dscr[0].length = buffer_length;
tx_dscr[1].data = NULL;
tx_dscr[1].length = 0;
//if ( dir == BUS_READ ) {
rx_dscr[0].data = buffer;
rx_dscr[0].length = buffer_length;
//} else {
// rx_dscr[0].data = &junk;
// rx_dscr[0].length = 0;
//}
rx_dscr[1].data = NULL;
rx_dscr[1].length = 0;
#ifndef HARD_CS_NSS0
mico_gpio_output_low( MICO_GPIO_15 );
#endif
if (spi_master_vec_transceive_buffer_wait(&spi_master, tx_dscr, rx_dscr) != STATUS_OK) {
platform_log("STATUS = -1");
return kGeneralErr;
}
#ifndef HARD_CS_NSS0
mico_gpio_output_high( MICO_GPIO_15 );
#endif
#endif /* USE_OWN_SPI_DR */
MCU_CLOCKS_NOT_NEEDED();
#ifdef USE_OWN_SPI_DRV
return result;
#else
return 0;
#endif
}
OSStatus host_platform_bus_init( void )
{
#ifndef USE_OWN_SPI_DRV
struct spi_master_vec_config spi;
#else
pdc_packet_t pdc_spi_packet;
#endif
OSStatus result;
MCU_CLOCKS_NEEDED();
spi_disable_interrupt(SPI_MASTER_BASE, 0xffffffff);
//Disable_global_interrupt();//TBD!
result = mico_rtos_init_semaphore( &spi_transfer_finished_semaphore, 1 );
if ( result != kNoErr )
{
return result;
}
mico_gpio_initialize( (mico_gpio_t)MICO_GPIO_9, INPUT_PULL_UP );
//ioport_port_mask_t ul_mask = ioport_pin_to_mask(CREATE_IOPORT_PIN(PORTA,24));
//pio_set_input(PIOA,ul_mask, PIO_PULLUP|PIO_DEBOUNCE);
mico_gpio_enable_IRQ( (mico_gpio_t)MICO_GPIO_9, IRQ_TRIGGER_RISING_EDGE, spi_irq_handler, NULL );
#ifndef HARD_CS_NSS0
mico_gpio_initialize( MICO_GPIO_15, OUTPUT_PUSH_PULL);//spi ss/cs
mico_gpio_output_high( MICO_GPIO_15 );//MICO_GPIO_15 TBD!
#else
ioport_set_pin_peripheral_mode(SPI_NPCS0_GPIO, SPI_NPCS0_FLAGS);//TBD!
#endif
/* set PORTB 01 to high to put WLAN module into g_SPI mode */
mico_gpio_initialize( (mico_gpio_t)WL_GPIO0, OUTPUT_PUSH_PULL );
mico_gpio_output_high( (mico_gpio_t)WL_GPIO0 );
#ifdef USE_OWN_SPI_DRV
#if (SAMG55)
/* Enable the peripheral and set SPI mode. */
flexcom_enable(BOARD_FLEXCOM_SPI);
flexcom_set_opmode(BOARD_FLEXCOM_SPI, FLEXCOM_SPI);
#else
/* Configure an SPI peripheral. */
pmc_enable_periph_clk(SPI_ID);
#endif
//Init pdc, and clear RX TX.
spi_m_pdc = spi_get_pdc_base(SPI_MASTER_BASE);
pdc_spi_packet.ul_addr = NULL;
pdc_spi_packet.ul_size = 3;
pdc_tx_init(spi_m_pdc, &pdc_spi_packet, NULL);
pdc_rx_init(spi_m_pdc, &pdc_spi_packet, NULL);
spi_disable(SPI_MASTER_BASE);
spi_reset(SPI_MASTER_BASE);
spi_set_lastxfer(SPI_MASTER_BASE);
spi_set_master_mode(SPI_MASTER_BASE);
spi_disable_mode_fault_detect(SPI_MASTER_BASE);
#ifdef HARD_CS_NSS0
//spi_enable_peripheral_select_decode(SPI_MASTER_BASE);
//spi_set_peripheral_chip_select_value(SPI_MASTER_BASE, SPI_CHIP_SEL);
spi_set_peripheral_chip_select_value(SPI_MASTER_BASE, SPI_CHIP_PCS); //use soft nss comment here
#endif
spi_set_clock_polarity(SPI_MASTER_BASE, SPI_CHIP_SEL, SPI_CLK_POLARITY);
spi_set_clock_phase(SPI_MASTER_BASE, SPI_CHIP_SEL, SPI_CLK_PHASE);
spi_set_bits_per_transfer(SPI_MASTER_BASE, SPI_CHIP_SEL, SPI_CSR_BITS_8_BIT);
spi_set_baudrate_div(SPI_MASTER_BASE, SPI_CHIP_SEL, (sysclk_get_cpu_hz() / SPI_BAUD_RATE));
spi_set_transfer_delay(SPI_MASTER_BASE, SPI_CHIP_SEL, SPI_DLYBS, SPI_DLYBCT);
/* Must be lower priority than the value of configMAX_SYSCALL_INTERRUPT_PRIORITY */
/* otherwise FreeRTOS will not be able to mask the interrupt */
/* keep in mind that ARMCM3 interrupt priority logic is inverted, the highest value */
/* is the lowest priority */
/* Configure SPI interrupts . */
spi_enable_interrupt(SPI_MASTER_BASE, SPI_IER_RXBUFF);
//spi_enable_interrupt(SPI_MASTER_BASE, SPI_IER_NSSR | SPI_IER_RXBUFF);
NVIC_DisableIRQ(SPI_IRQn);
//irq_register_handler(SPI_IRQn, 3);
NVIC_ClearPendingIRQ(SPI_IRQn);
NVIC_SetPriority(SPI_IRQn, 3);
NVIC_EnableIRQ(SPI_IRQn);
spi_enable(SPI_MASTER_BASE);
#else
spi.baudrate = SPI_BAUD_RATE;
if (STATUS_OK != spi_master_vec_init(&spi_master, SPI_MASTER_BASE, &spi)) {
return -1;
}
spi_master_vec_enable(&spi_master);
#endif
//if (!Is_global_interrupt_enabled())
// Enable_global_interrupt();
MCU_CLOCKS_NOT_NEEDED();
return kNoErr;
}
OSStatus host_platform_sdio_transfer( bus_transfer_direction_t direction, sdio_command_t command, sdio_transfer_mode_t mode, sdio_block_size_t block_size, uint32_t argument, /*@null@*/ uint32_t* data, uint16_t data_size, sdio_response_needed_t response_expected, /*@out@*/ /*@null@*/ uint32_t* response )
{
UNUSED_PARAMETER(mode);
OSStatus result = kNoErr;
uint16_t attempts = 0;
uint8_t response_full[6];
uint32_t blockNumber, blockIdx;
bool status;
check_string(!((command == SDIO_CMD_53) && (data == NULL)), "Bad args" );
if ( response != NULL )
{
*response = 0;
}
MCU_CLOCKS_NEEDED();
restart:
// SDIO->ICR = (uint32_t) 0xFFFFFFFF;
++attempts;
/* Check if we've tried too many times */
if (attempts >= (uint16_t) BUS_LEVEL_MAX_RETRIES)
{
result = kGeneralErr;
platform_log("SDIO error!");
mico_thread_sleep(0xFFFFFFFF);
goto exit;
}
/* Prepare the data transfer register */
if ( command == SDIO_CMD_53 )
{
if ( direction == BUS_READ )
{
if(mode == SDIO_BYTE_MODE)
SdioStartReciveData((uint8_t*)data, data_size);
else
SdioStartReciveData((uint8_t*)data, block_size);
//require_noerr_quiet(SdioSendCommand(command, argument, 2), restart);
SdioDataInterruptEn();
waiting = true;
status = SdioSendCommand(command, argument, 1);
if(status != 0){
goto restart;
}
result = mico_rtos_get_semaphore( &sdio_transfer_finished_semaphore, (uint32_t) 50 );
waiting = false;
if ( result != kNoErr )
{
printf("@@, %d", data_size);
//SdioDataInterruptDis();
goto restart;
}
//while(!SdioIsDatTransDone());
if(mode == SDIO_BLOCK_MODE){
blockNumber = argument & (uint32_t) ( 0x1FF ) ;
for( blockIdx = 1; blockIdx < blockNumber; blockIdx++ ){
SdioStartReciveData( (uint8_t *)data + blockIdx * block_size, block_size);
waiting = true;
result = mico_rtos_get_semaphore( &sdio_transfer_finished_semaphore, (uint32_t) 50 );
waiting = false;
if ( result != kNoErr )
{
printf("@, %d", data_size);
//SdioDataInterruptDis();
goto restart;
}
//while(!SdioIsDatTransDone());
}
}
SdioEndDatTrans();
SdioDataInterruptDis();
//memcpy( data, temp_dma_buffer, (size_t) data_size );
}else{
//memcpy(temp_dma_buffer, data, data_size);
//require_noerr_quiet(SdioSendCommand(command, argument, 2), restart);
status = SdioSendCommand(command, argument, 1);
if(status != 0){
goto restart;
}
SdioDataInterruptEn();
if(mode == SDIO_BYTE_MODE){
waiting = true;
SdioStartSendData((uint8_t *)data, data_size);
result = mico_rtos_get_semaphore( &sdio_transfer_finished_semaphore, (uint32_t) 50 );
waiting = false;
if ( result != kNoErr )
{
printf("$, %d", data_size);
//SdioDataInterruptDis();
goto restart;
}
//while(!SdioIsDatTransDone());
}else{
blockNumber = argument & (uint32_t) ( 0x1FF ) ;
for( blockIdx = 0; blockIdx < blockNumber; blockIdx++ ){
SdioStartSendData( (uint8_t *)data + blockIdx * block_size, block_size);
waiting = true;
result = mico_rtos_get_semaphore( &sdio_transfer_finished_semaphore, (uint32_t) 50 );
waiting = false;
if ( result != kNoErr )
{
printf("-, %d", data_size);
//SdioDataInterruptDis();
goto restart;
}
//while(!SdioIsDatTransDone());
}
}
SdioEndDatTrans();
SdioDataInterruptDis();
}
}
else
{
status = SdioSendCommand(command, argument, 50);
if( response_expected == RESPONSE_NEEDED && status != 0 ) {
goto restart;
}
}
if ( response != NULL )
{
SdioGetCmdResp(response_full, 6);
*response = hton32(*(uint32_t *)&response_full[1]);
}
result = kNoErr;
exit:
MCU_CLOCKS_NOT_NEEDED();
return result;
}
OSStatus host_platform_bus_init( void )
{
SPI_InitTypeDef spi_init;
DMA_InitTypeDef dma_init_structure;
GPIO_InitTypeDef gpio_init_structure;
NVIC_InitTypeDef nvic_init_structure;
MCU_CLOCKS_NEEDED();
mico_rtos_init_semaphore(&spi_transfer_finished_semaphore, 1);
/* Enable SPI_SLAVE DMA clock */
RCC_AHB1PeriphClockCmd( SPIX_DMA_CLK, ENABLE );
/* Enable SPI_SLAVE Periph clock */
SPIX_CLK_FUNCTION( SPIX_CLK, ENABLE );
/* Enable GPIO Bank B & C */
RCC_AHB1PeriphClockCmd( SPI_BUS_CLOCK_BANK_CLK | SPI_BUS_MISO_BANK_CLK | SPI_BUS_MOSI_BANK_CLK | SPI_BUS_CS_BANK_CLK | SPI_IRQ_CLK, ENABLE );
/* Enable SYSCFG. Needed for selecting EXTI interrupt line */
RCC_APB2PeriphClockCmd( RCC_APB2Periph_SYSCFG, ENABLE );
/* Setup the interrupt input for WLAN_IRQ */
gpio_init_structure.GPIO_Mode = GPIO_Mode_IN;
gpio_init_structure.GPIO_PuPd = GPIO_PuPd_NOPULL;
gpio_init_structure.GPIO_Speed = GPIO_Speed_100MHz;
gpio_init_structure.GPIO_Pin = ( 1 << SPI_IRQ_PIN );
GPIO_Init( SPI_IRQ_BANK, &gpio_init_structure );
gpio_irq_enable(SPI_IRQ_BANK, SPI_IRQ_PIN, IRQ_TRIGGER_RISING_EDGE, spi_irq_handler, 0);
/* Setup the SPI lines */
/* Setup SPI slave select GPIOs */
gpio_init_structure.GPIO_Mode = GPIO_Mode_AF;
gpio_init_structure.GPIO_OType = GPIO_OType_PP;
gpio_init_structure.GPIO_Speed = GPIO_Speed_100MHz;
gpio_init_structure.GPIO_Pin = ( 1 << SPI_BUS_CLOCK_PIN ) | ( 1 << SPI_BUS_MISO_PIN ) | ( 1 << SPI_BUS_MOSI_PIN );
GPIO_Init( SPI_BUS_CLOCK_BANK, &gpio_init_structure );
GPIO_PinAFConfig( SPI_BUS_CLOCK_BANK, SPI_BUS_CLOCK_PIN, SPIX_AF );
GPIO_PinAFConfig( SPI_BUS_MISO_BANK, SPI_BUS_MISO_PIN, SPIX_AF );
GPIO_PinAFConfig( SPI_BUS_MOSI_BANK, SPI_BUS_MOSI_PIN, SPIX_AF );
/* Setup SPI slave select GPIOs */
gpio_init_structure.GPIO_Mode = GPIO_Mode_OUT;
gpio_init_structure.GPIO_OType = GPIO_OType_PP;
gpio_init_structure.GPIO_Speed = GPIO_Speed_100MHz;
gpio_init_structure.GPIO_Pin = ( 1 << SPI_BUS_CS_PIN );
GPIO_Init( SPI_BUS_CS_BANK, &gpio_init_structure );
GPIO_SetBits( SPI_BUS_CS_BANK, ( 1 << SPI_BUS_CS_PIN ) ); /* Set CS high (disabled) */
/* Set GPIO_B[1:0] to 01 to put WLAN module into gSPI mode */
MicoGpioInitialize( (mico_gpio_t)WL_GPIO0, OUTPUT_PUSH_PULL );
MicoGpioOutputHigh( (mico_gpio_t)WL_GPIO0 );
MicoGpioInitialize( (mico_gpio_t)WL_GPIO1, OUTPUT_PUSH_PULL );
MicoGpioOutputLow( (mico_gpio_t)WL_GPIO1 );
/* Setup DMA for SPIX RX */
DMA_DeInit( SPIX_DMA_RX_STREAM );
dma_init_structure.DMA_Channel = SPIX_DMA_RX_CHANNEL;
dma_init_structure.DMA_PeripheralBaseAddr = (uint32_t) &SPIX->DR;
dma_init_structure.DMA_Memory0BaseAddr = 0;
dma_init_structure.DMA_DIR = DMA_DIR_PeripheralToMemory;
dma_init_structure.DMA_BufferSize = 0;
dma_init_structure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
dma_init_structure.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma_init_structure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
dma_init_structure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
dma_init_structure.DMA_Mode = DMA_Mode_Normal;
dma_init_structure.DMA_Priority = DMA_Priority_VeryHigh;
dma_init_structure.DMA_FIFOMode = DMA_FIFOMode_Disable;
dma_init_structure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
dma_init_structure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
dma_init_structure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init( SPIX_DMA_RX_STREAM, &dma_init_structure );
/* Setup DMA for SPIX TX */
DMA_DeInit( SPIX_DMA_TX_STREAM );
dma_init_structure.DMA_Channel = SPIX_DMA_TX_CHANNEL;
dma_init_structure.DMA_PeripheralBaseAddr = (uint32_t) &SPIX->DR;
dma_init_structure.DMA_Memory0BaseAddr = 0;
dma_init_structure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
dma_init_structure.DMA_BufferSize = 0;
dma_init_structure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
dma_init_structure.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma_init_structure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
dma_init_structure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
dma_init_structure.DMA_Mode = DMA_Mode_Normal;
dma_init_structure.DMA_Priority = DMA_Priority_VeryHigh;
dma_init_structure.DMA_FIFOMode = DMA_FIFOMode_Disable;
dma_init_structure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
dma_init_structure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
dma_init_structure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init( SPIX_DMA_TX_STREAM, &dma_init_structure );
/* Must be lower priority than the value of configMAX_SYSCALL_INTERRUPT_PRIORITY */
/* otherwise FreeRTOS will not be able to mask the interrupt */
/* keep in mind that ARMCM3 interrupt priority logic is inverted, the highest value */
/* is the lowest priority */
nvic_init_structure.NVIC_IRQChannel = SPIX_DMA_RX_IRQ_CHANNEL;
nvic_init_structure.NVIC_IRQChannelPreemptionPriority = (uint8_t) 0x3;
nvic_init_structure.NVIC_IRQChannelSubPriority = 0x0;
nvic_init_structure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init( &nvic_init_structure );
DMA_ITConfig(SPIX_DMA_RX_STREAM, DMA_IT_TC, ENABLE);
/* Enable DMA for TX */
SPI_I2S_DMACmd( SPIX, SPI_I2S_DMAReq_Tx | SPI_I2S_DMAReq_Rx, ENABLE );
/* Setup SPI */
spi_init.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
spi_init.SPI_Mode = SPI_Mode_Master;
spi_init.SPI_DataSize = SPI_DataSize_8b;
spi_init.SPI_CPOL = SPI_CPOL_High;
spi_init.SPI_CPHA = SPI_CPHA_2Edge;
spi_init.SPI_NSS = SPI_NSS_Soft;
spi_init.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
spi_init.SPI_FirstBit = SPI_FirstBit_MSB;
spi_init.SPI_CRCPolynomial = (uint16_t) 7;
/* Init SPI and enable it */
SPI_Init( SPIX, &spi_init );
SPI_Cmd( SPIX, ENABLE );
MCU_CLOCKS_NOT_NEEDED();
return kNoErr;
}