static platform_result_t spi_dma_transfer( const platform_spi_t* spi, const platform_spi_config_t* config )
{
uint32_t loop_count;
/* Enable dma channels that have just been configured */
DMA_Cmd( spi->tx_dma.stream, ENABLE );
DMA_Cmd( spi->rx_dma.stream, ENABLE );
/* Wait for DMA to complete */
/* TODO: This should wait on a semaphore that is triggered from an IRQ */
loop_count = 0;
while ( ( DMA_GetFlagStatus( spi->tx_dma.stream, spi->tx_dma.complete_flags ) == RESET ) )
{
loop_count++;
/* Check if we've run out of time */
if ( loop_count >= (uint32_t) SPI_DMA_TIMEOUT_LOOPS )
{
platform_gpio_output_high( config->chip_select );
return WICED_TIMEOUT;
}
}
platform_gpio_output_high( config->chip_select );
return WICED_SUCCESS;
}
void platform_init_external_devices( void )
{
//wiced_bool_t button1_pressed;
/* Initialise buttons to input by default */
platform_gpio_init( &platform_gpio_pins[BTN1], INPUT_PULL_UP );
#if 0
button1_pressed = wiced_gpio_input_get( BTN1 ) ? WICED_FALSE : WICED_TRUE; /* The button has inverse logic */
if ( button1_pressed != WICED_TRUE )
{
platform_gpio_init( &platform_gpio_pins[LED], OUTPUT_PUSH_PULL );
platform_gpio_output_high( &platform_gpio_pins[LED] );
}
#endif
/* Initialise LEDs and turn off by default */
platform_gpio_init( &platform_gpio_pins[LED_R], OUTPUT_PUSH_PULL );
platform_gpio_init( &platform_gpio_pins[LED_G], OUTPUT_PUSH_PULL );
platform_gpio_init( &platform_gpio_pins[LED_B], OUTPUT_PUSH_PULL );
platform_gpio_output_high( &platform_gpio_pins[LED_R] );
platform_gpio_output_high( &platform_gpio_pins[LED_G] );
platform_gpio_output_high( &platform_gpio_pins[LED_B] );
#ifndef WICED_DISABLE_STDIO
/* Initialise UART standard I/O */
platform_stdio_init( &platform_uart_drivers[STDIO_UART], &platform_uart_peripherals[STDIO_UART], &stdio_config );
#endif
}
/* Checks if a factory reset is requested */
wiced_bool_t platform_check_factory_reset( void )
{
uint32_t factory_reset_counter = 0;
int led_state = 0;
while ( ( 0 == platform_gpio_input_get( &platform_gpio_pins[ WICED_BUTTON1 ] ) )
&& ( ( factory_reset_counter += 100 ) <= 5000 )
/* &&( WICED_SUCCESS == (wiced_result_t)host_rtos_delay_milliseconds( 100 ) ) */
)
{
/* Factory reset button is being pressed. */
/* User Must press it for 5 seconds to ensure it was not accidental */
/* Toggle LED every 100ms */
if ( led_state == 0 )
{
platform_gpio_output_high( &platform_gpio_pins[ WICED_LED1 ] );
led_state = 1;
}
else
{
platform_gpio_output_low( &platform_gpio_pins[ WICED_LED1 ] );
led_state = 0;
}
if ( factory_reset_counter == 5000 )
{
return WICED_TRUE;
}
}
return WICED_FALSE;
}
/* Checks if a factory reset is requested */
wiced_bool_t platform_check_factory_reset( void )
{
uint32_t factory_reset_counter = 0;
#ifndef GPIO_LED_NOT_SUPPORTED
int led_state = 0;
#endif
while ( ( 0 == platform_gpio_input_get( &platform_gpio_pins[ WICED_BUTTON1 ] ) )
&&( ( factory_reset_counter += PLATFORM_FACTORY_RESET_CHECK_PERIOD ) <= PLATFORM_FACTORY_RESET_TIMEOUT )
&&( WICED_SUCCESS == (wiced_result_t)host_rtos_delay_milliseconds( PLATFORM_FACTORY_RESET_CHECK_PERIOD ) )
)
{
/* Factory reset button is being pressed. */
/* User Must press it for 5 seconds to ensure it was not accidental */
#ifndef GPIO_LED_NOT_SUPPORTED
/* Toggle LED every 100ms */
if ( led_state == 0 )
{
platform_gpio_output_high( &platform_gpio_pins[ WICED_LED1 ] );
led_state = 1;
}
else
{
platform_gpio_output_low( &platform_gpio_pins[ WICED_LED1 ] );
led_state = 0;
}
#endif
if ( factory_reset_counter == 5000 )
{
return WICED_TRUE;
}
}
return WICED_FALSE;
}
OSStatus host_platform_spi_transfer( bus_transfer_direction_t dir, uint8_t* buffer, uint16_t buffer_length )
{
OSStatus result;
pdc_packet_t pdc_spi_packet = { (uint32_t)buffer, buffer_length };
Pdc* spi_pdc = spi_get_pdc_base( wifi_spi.port );
platform_mcu_powersave_disable();
platform_gpio_output_low( &wifi_spi_pins[WIFI_PIN_SPI_CS] );
pdc_tx_init( spi_pdc, &pdc_spi_packet, NULL);
if ( dir == BUS_READ ) {
pdc_rx_init( spi_pdc, &pdc_spi_packet, NULL);
spi_enable_interrupt(wifi_spi.port, SPI_IER_RXBUFF );
pdc_enable_transfer( spi_pdc, PERIPH_PTCR_TXTEN | PERIPH_PTCR_RXTEN );
}
if ( dir == BUS_WRITE ) {
spi_enable_interrupt( wifi_spi.port, SPI_IER_ENDTX );
pdc_enable_transfer( spi_pdc, PERIPH_PTCR_TXTEN );
}
result = mico_rtos_get_semaphore( &spi_transfer_finished_semaphore, 100 );
platform_gpio_output_high( &wifi_spi_pins[WIFI_PIN_SPI_CS] );
platform_mcu_powersave_enable();
return result;
}
uint32_t platform_get_factory_reset_button_time ( uint32_t max_time )
{
uint32_t button_press_timer = 0;
int led_state = 0;
/* Initialise input */
platform_gpio_init( &platform_gpio_pins[ PLATFORM_FACTORY_RESET_BUTTON_GPIO ], INPUT_PULL_UP );
while ( (PLATFORM_FACTORY_RESET_PRESSED_STATE == platform_gpio_input_get(&platform_gpio_pins[ PLATFORM_FACTORY_RESET_BUTTON_GPIO ])) )
{
/* How long is the "Factory Reset" button being pressed. */
host_rtos_delay_milliseconds( PLATFORM_FACTORY_RESET_CHECK_PERIOD );
/* Toggle LED every PLATFORM_FACTORY_RESET_CHECK_PERIOD */
if ( led_state == 0 )
{
platform_gpio_output_high( &platform_gpio_pins[ PLATFORM_FACTORY_RESET_LED_GPIO ] );
led_state = 1;
}
else
{
platform_gpio_output_low( &platform_gpio_pins[ PLATFORM_FACTORY_RESET_LED_GPIO ] );
led_state = 0;
}
button_press_timer += PLATFORM_FACTORY_RESET_CHECK_PERIOD;
if ((max_time > 0) && (button_press_timer >= max_time))
{
break;
}
}
/* turn off the LED */
if (PLATFORM_FACTORY_RESET_LED_ON_STATE == 1)
{
platform_gpio_output_low( &platform_gpio_pins[ PLATFORM_FACTORY_RESET_LED_GPIO ] );
}
else
{
platform_gpio_output_high( &platform_gpio_pins[ PLATFORM_FACTORY_RESET_LED_GPIO ] );
}
return button_press_timer;
}
void host_platform_power_wifi( bool power_enabled )
{
#if defined ( MICO_USE_WIFI_POWER_PIN ) && defined ( MICO_USE_WIFI_POWER_PIN_ACTIVE_HIGH )
( power_enabled == true ) ? platform_gpio_output_high( &wifi_control_pins[WIFI_PIN_POWER] ) : platform_gpio_output_low ( &wifi_control_pins[WIFI_PIN_POWER] );
#elif defined ( MICO_USE_WIFI_POWER_PIN )
( power_enabled == true ) ? platform_gpio_output_low ( &wifi_control_pins[WIFI_PIN_POWER] ) : platform_gpio_output_high( &wifi_control_pins[WIFI_PIN_POWER] );
#else
UNUSED_PARAMETER( power_enabled );
#endif
}
/*****************************************************************************
**
** Function UPIO_Set
**
** Description
** This function sets one or more GPIO devices to the given state.
** Multiple GPIOs of the same type can be masked together to set more
** than one GPIO. This function can only be used on types UPIO_LED and
** UPIO_GENERAL.
**
** Input Parameters:
** type The type of device.
** pio Indicates the particular GPIOs.
** state The desired state.
**
** Output Parameter:
** None.
**
** Returns:
** None.
**
*****************************************************************************/
UDRV_API void UPIO_Set( tUPIO_TYPE type, tUPIO pio, tUPIO_STATE state )
{
//DRV_TRACE_DEBUG2("UPIO_Set %d, %s", pio, UPIO_OFF == state ? "UPIO_OFF" : "UPIO_ON");
#if HCILP_INCLUDED
if(UPIO_OFF == state)
{
platform_gpio_output_low( mico_bt_control_pins[MICO_BT_PIN_DEVICE_WAKE] );
}else
{
platform_gpio_output_high( mico_bt_control_pins[MICO_BT_PIN_DEVICE_WAKE] );
}
#endif
}
static int h4_set_baudrate(uint32_t baudrate){
#ifdef _STM32F205RGT6_
// directly use STM peripheral functions to change baud rate dynamically
// set TX to high
log_info("h4_set_baudrate %u", (int) baudrate);
const platform_gpio_t* gpio = wiced_bt_uart_pins[WICED_BT_PIN_UART_TX];
platform_gpio_output_high(gpio);
// reconfigure TX pin as GPIO
GPIO_InitTypeDef gpio_init_structure;
gpio_init_structure.GPIO_Speed = GPIO_Speed_50MHz;
gpio_init_structure.GPIO_Mode = GPIO_Mode_OUT;
gpio_init_structure.GPIO_OType = GPIO_OType_PP;
gpio_init_structure.GPIO_PuPd = GPIO_PuPd_NOPULL;
gpio_init_structure.GPIO_Pin = (uint32_t) ( 1 << gpio->pin_number );
GPIO_Init( gpio->port, &gpio_init_structure );
// disable USART
USART_Cmd( wiced_bt_uart_peripheral->port, DISABLE );
// setup init structure
USART_InitTypeDef uart_init_structure;
uart_init_structure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
uart_init_structure.USART_BaudRate = baudrate;
uart_init_structure.USART_WordLength = USART_WordLength_8b;
uart_init_structure.USART_StopBits = USART_StopBits_1;
uart_init_structure.USART_Parity = USART_Parity_No;
uart_init_structure.USART_HardwareFlowControl = USART_HardwareFlowControl_RTS_CTS;
#ifdef WICED_BT_UART_MANUAL_CTS_RTS
uart_init_structure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
#endif
USART_Init(wiced_bt_uart_peripheral->port, &uart_init_structure);
// enable USART again
USART_Cmd( wiced_bt_uart_peripheral->port, ENABLE );
// set TX pin as USART again
gpio_init_structure.GPIO_Mode = GPIO_Mode_AF;
GPIO_Init( gpio->port, &gpio_init_structure );
#else
log_error("h4_set_baudrate not implemented for this WICED Platform");
#endif
return 0;
}
OSStatus host_platform_spi_transfer( bus_transfer_direction_t dir, uint8_t* buffer, uint16_t buffer_length )
{
OSStatus result;
uint32_t junk;
platform_mcu_powersave_disable();
wifi_spi.tx_dma.stream->NDTR = buffer_length;
wifi_spi.tx_dma.stream->M0AR = (uint32_t) buffer;
if ( dir == BUS_READ )
{
wifi_spi.rx_dma.stream->NDTR = buffer_length;
wifi_spi.rx_dma.stream->M0AR = (uint32_t) buffer;
wifi_spi.rx_dma.stream->CR |= DMA_MemoryInc_Enable | ( 1 << 4);
}
else
{
wifi_spi.rx_dma.stream->NDTR = buffer_length;
wifi_spi.rx_dma.stream->M0AR = (uint32_t) &junk;
wifi_spi.rx_dma.stream->CR &= ( ~DMA_MemoryInc_Enable ) | ( 1 << 4);
}
platform_gpio_output_low( &wifi_spi_pins[WIFI_PIN_SPI_CS] );
DMA_Cmd( wifi_spi.rx_dma.stream, ENABLE );
DMA_Cmd( wifi_spi.tx_dma.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( wifi_spi.rx_dma.stream, DISABLE );
DMA_Cmd( wifi_spi.tx_dma.stream, DISABLE );
/* Clear the CS pin and the DMA status flag */
platform_gpio_output_high( &wifi_spi_pins[WIFI_PIN_SPI_CS] ); /* CS high (to deselect) */
clear_dma_interrupts( wifi_spi.rx_dma.stream, wifi_spi.rx_dma.complete_flags );
clear_dma_interrupts( wifi_spi.tx_dma.stream, wifi_spi.tx_dma.complete_flags );
platform_mcu_powersave_enable();
return result;
}
OSStatus platform_gpio_output_trigger( const platform_gpio_t* gpio )
{
OSStatus err = kNoErr;
uint32_t regValue;
uint32_t mask = (uint32_t)1 << gpio->pin;
platform_mcu_powersave_disable();
require_action_quiet( gpio != NULL, exit, err = kParamErr);
regValue = GpioGetReg( GPIO_A_OUT + gpio->port );
(regValue&mask)? platform_gpio_output_low( gpio ) : platform_gpio_output_high( gpio );
exit:
platform_mcu_powersave_enable();
return err;
}
wwd_result_t host_platform_bus_init( void )
{
/* Setup the interrupt input for WLAN_IRQ */
platform_gpio_init( &wifi_spi_pins[WWD_PIN_SPI_IRQ], INPUT_HIGH_IMPEDANCE );
//platform_gpio_irq_enable( &wifi_control_pins[WWD_PIN_IRQ], IRQ_TRIGGER_RISING_EDGE, spi_irq_handler, 0 );
#ifdef WICED_WIFI_USE_GPIO_FOR_BOOTSTRAP_0
/* Set GPIO_B[1:0] to 01 to put WLAN module into gSPI mode */
platform_gpio_init( &wifi_control_pins[WWD_PIN_BOOTSTRAP_0], OUTPUT_PUSH_PULL );
platform_gpio_output_high( &wifi_control_pins[WWD_PIN_BOOTSTRAP_0] );
#endif
#ifdef WICED_WIFI_USE_GPIO_FOR_BOOTSTRAP_1
platform_gpio_init( &wifi_control_pins[WWD_PIN_BOOTSTRAP_1], OUTPUT_PUSH_PULL );
platform_gpio_output_low( &wifi_control_pins[WWD_PIN_BOOTSTRAP_1] );
#endif
return WICED_SUCCESS;
}
platform_result_t platform_spi_init( const platform_spi_t* spi, const platform_spi_config_t* config )
{
UNUSED_PARAMETER(spi);
UNUSED_PARAMETER(config);
platform_mcu_powersave_disable( );
Pdc* spi_pdc = spi_get_pdc_base( spi->peripheral );
/* Setup chip select pin */
platform_gpio_init( config->chip_select, OUTPUT_PUSH_PULL );
platform_gpio_output_high( config->chip_select );
/* Setup other pins */
platform_gpio_peripheral_pin_init( spi->mosi_pin, ( IOPORT_MODE_MUX_A | IOPORT_MODE_PULLUP ) );
platform_gpio_peripheral_pin_init( spi->miso_pin, ( IOPORT_MODE_MUX_A | IOPORT_MODE_PULLUP ) );
platform_gpio_peripheral_pin_init( spi->clk_pin, ( IOPORT_MODE_MUX_A | IOPORT_MODE_PULLUP ) );
/* Configure an SPI peripheral. */
pmc_enable_periph_clk( spi->peripheral_id );
spi_disable( spi->peripheral );
spi_reset( spi->peripheral );
spi_set_lastxfer( spi->peripheral );
spi_set_master_mode( spi->peripheral );
spi_disable_mode_fault_detect( spi->peripheral );
spi_set_peripheral_chip_select_value( spi->peripheral, 0 );
spi_set_clock_polarity( spi->peripheral, 0, ( ( config->mode && SPI_CLOCK_IDLE_HIGH ) ? (1) : (0) ) );
spi_set_clock_phase( spi->peripheral, 0, ( ( config->mode && SPI_CLOCK_RISING_EDGE ) ? (1) : (0) ) );
spi_set_bits_per_transfer( spi->peripheral, 0, SPI_CSR_BITS_8_BIT );
spi_set_baudrate_div( spi->peripheral, 0, (uint8_t)( CPU_CLOCK_HZ / config->speed ) );
spi_set_transfer_delay( spi->peripheral, 0, 0, 0 );
spi_enable( spi->peripheral );
pdc_disable_transfer( spi_pdc, PERIPH_PTCR_RXTDIS | PERIPH_PTCR_TXTDIS );
platform_mcu_powersave_enable( );
return PLATFORM_SUCCESS;
}
static wiced_result_t h4_rx_worker_receive_packet(void * arg){
#ifdef WICED_BT_UART_MANUAL_CTS_RTS
platform_gpio_output_low(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]);
#endif
while (1){
rx_worker_read_pos = 0;
h4_rx_worker_receive_bytes(1);
switch (hci_packet[0]){
case HCI_EVENT_PACKET:
h4_rx_worker_receive_bytes(HCI_EVENT_HEADER_SIZE);
h4_rx_worker_receive_bytes(hci_packet[2]);
break;
case HCI_ACL_DATA_PACKET:
h4_rx_worker_receive_bytes(HCI_ACL_HEADER_SIZE);
h4_rx_worker_receive_bytes(little_endian_read_16( hci_packet, 3));
break;
case HCI_SCO_DATA_PACKET:
h4_rx_worker_receive_bytes(HCI_SCO_HEADER_SIZE);
h4_rx_worker_receive_bytes(hci_packet[3]);
break;
default:
// try again
log_error("h4_rx_worker_receive_packet: invalid packet type 0x%02x", hci_packet[0]);
continue;
}
#ifdef WICED_BT_UART_MANUAL_CTS_RTS
platform_gpio_output_high(wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS]);
#endif
// deliver packet on main thread
btstack_run_loop_wiced_execute_code_on_main_thread(&h4_main_deliver_packet, NULL);
return WICED_SUCCESS;
}
}
platform_result_t platform_spi_transfer( const platform_spi_t* spi, const platform_spi_config_t* config, const platform_spi_message_segment_t* segments, uint16_t number_of_segments )
{
int i = 0;
platform_result_t result;
platform_mcu_powersave_disable( );
platform_gpio_output_low( config->chip_select );
for ( i = 0; i < number_of_segments; i++ )
{
result = sam4s_spi_transfer_internal( spi, segments[i].tx_buffer, segments[i].rx_buffer, segments[i].length );
if ( result != PLATFORM_SUCCESS )
{
return result;
}
}
platform_gpio_output_high( config->chip_select );
platform_mcu_powersave_enable( );
return PLATFORM_SUCCESS;
}
// Magicoe OSStatus platform_spi_transfer( const platform_spi_t* spi, const platform_spi_config_t* config, const platform_spi_message_segment_t* segments, uint16_t number_of_segments )
OSStatus platform_spi_transfer( platform_spi_driver_t* driver, const platform_spi_config_t* config, const platform_spi_message_segment_t* segments, uint16_t number_of_segments )
{
OSStatus err = kNoErr;
uint32_t count = 0;
uint32_t i;
const platform_spi_message_segment_t *pSeg;
uint32_t dmaXferLen;
DMA_CHDESC_T *pTxDesc, *pRxDesc;
LPC_SPI_T *pSPI;
uint32_t dmaRxChnNdx, dmaTxChnNdx;
const uint8_t *pcTx;
uint8_t *pRx;
require_action_quiet( ( driver != NULL ) && ( config != NULL ) && ( segments != NULL ) && ( number_of_segments != 0 ), exit, err = kParamErr);
// save the driver pointer so that in DMA IRQ callback we can access its members
platform_mcu_powersave_disable();
pSeg = segments;
pTxDesc = (DMA_CHDESC_T *) g_pDMA->SRAMBASE + driver->peripheral->dmaTxChnNdx;
pRxDesc = (DMA_CHDESC_T *) g_pDMA->SRAMBASE + driver->peripheral->dmaRxChnNdx;
pSPI = driver->peripheral->port;
if (pSPI == LPC_SPI0)
s_pSPIDrvs[0] = driver;
dmaRxChnNdx = driver->peripheral->dmaRxChnNdx , dmaTxChnNdx = driver->peripheral->dmaTxChnNdx;
driver->xferErr = 0;
/* Activate chip select */
platform_gpio_output_low( config->chip_select );
for ( i = 0; i < number_of_segments; i++, pSeg++ )
{
// transfer one seg
count = pSeg->length;
if (0 == count)
continue;
pcTx = pSeg->tx_buffer , pRx = pSeg->rx_buffer;
do
{
dmaXferLen = count > DMA_MAX_XFER_CNT ? DMA_MAX_XFER_CNT : count;
count -= dmaXferLen;
driver->isRxDone = driver->isTxDone = 0;
#if 0
{
if (pRx != 0)
{
pSPI->TXCTRL &= ~(1UL<<22);
if (pSPI->STAT & SPI_STAT_RXRDY)
pSPI->RXDAT;
while (dmaXferLen--)
{
while (!(pSPI->STAT & SPI_STAT_TXRDY));
pSPI->TXDAT = *pcTx++;
while (!(pSPI->STAT & SPI_STAT_RXRDY));
*pRx++ = (uint8_t) pSPI->RXDAT;
}
}
else
{
pSPI->TXCTRL |= (1UL<<22);
while (dmaXferLen--)
{
while (!(pSPI->STAT & SPI_STAT_TXRDY));
pSPI->TXDAT = *pcTx++;
}
}
while (!(pSPI->STAT & SPI_STAT_TXRDY));
}
#else
pTxDesc->next = 0;
pTxDesc->dest = DMA_ADDR(&pSPI->TXDAT);
pTxDesc->source = DMA_ADDR(pcTx) + dmaXferLen - 1;
pTxDesc->xfercfg = DMA_XFERCFG_CFGVALID | DMA_XFERCFG_SETINTA |
DMA_XFERCFG_SWTRIG | DMA_XFERCFG_WIDTH_8 | DMA_XFERCFG_SRCINC_1 |
DMA_XFERCFG_DSTINC_0 | DMA_XFERCFG_XFERCOUNT(dmaXferLen);
if (pRx != 0)
{
pSPI->TXCTRL &= ~(1UL<<22);
driver->isRx = 1;
pRxDesc->next = 0;
pRxDesc->source = DMA_ADDR(&pSPI->RXDAT);
pRxDesc->dest = DMA_ADDR(pRx) + dmaXferLen - 1;
pRxDesc->xfercfg = DMA_XFERCFG_CFGVALID | DMA_XFERCFG_SETINTA |
DMA_XFERCFG_SWTRIG | DMA_XFERCFG_WIDTH_8 | DMA_XFERCFG_DSTINC_1 |
DMA_XFERCFG_SRCINC_0 | DMA_XFERCFG_XFERCOUNT(dmaXferLen);
// start RX DMA
g_pDMA->DMACH[dmaRxChnNdx].XFERCFG = pRxDesc->xfercfg;
} else {
driver->isRx = 0;
pSPI->TXCTRL |= (1UL<<22);
}
// start TX DMA
g_pDMA->DMACH[dmaTxChnNdx].XFERCFG = pTxDesc->xfercfg;
#ifndef NO_MICO_RTOS
mico_rtos_get_semaphore(&driver->sem_xfer_done, MICO_WAIT_FOREVER);
#else
while(1)
{
if (driver->isTxDone)
{
if (!driver->isRx || driver->isRxDone)
break;
}
__WFI();
}
#endif
#endif
if (driver->xferErr)
{
err = kGeneralErr;
break;
}
// >>> update read and/or write pointers
pcTx += dmaXferLen;
if (pRx != 0)
pRx += dmaXferLen;
// <<<
} while (count);
}
platform_gpio_output_high( config->chip_select );
exit:
platform_mcu_powersave_enable( );
return err;
}
void host_platform_reset_wifi( bool reset_asserted )
{
#if defined (MICO_USE_WIFI_RESET_PIN )
( reset_asserted == true ) ? platform_gpio_output_low( &wifi_control_pins[ WIFI_PIN_RESET ] ) : platform_gpio_output_high( &wifi_control_pins[ WIFI_PIN_RESET ] );
#else
UNUSED_PARAMETER( reset_asserted );
#endif
}
wiced_result_t bluetooth_wiced_init_platform( void )
{
if ( wiced_bt_control_pins[ WICED_BT_PIN_HOST_WAKE ] != NULL )
{
RETURN_IF_FAILURE( platform_gpio_init( wiced_bt_control_pins[WICED_BT_PIN_HOST_WAKE], INPUT_HIGH_IMPEDANCE ) );
}
if ( wiced_bt_control_pins[ WICED_BT_PIN_DEVICE_WAKE ] != NULL )
{
RETURN_IF_FAILURE( platform_gpio_init( wiced_bt_control_pins[ WICED_BT_PIN_DEVICE_WAKE ], OUTPUT_PUSH_PULL ) );
RETURN_IF_FAILURE( platform_gpio_output_low( wiced_bt_control_pins[ WICED_BT_PIN_DEVICE_WAKE ] ) );
wiced_rtos_delay_milliseconds( 100 );
}
/* Configure Reg Enable pin to output. Set to HIGH */
if ( wiced_bt_control_pins[ WICED_BT_PIN_POWER ] != NULL )
{
RETURN_IF_FAILURE( platform_gpio_init( wiced_bt_control_pins[ WICED_BT_PIN_POWER ], OUTPUT_OPEN_DRAIN_PULL_UP ) );
RETURN_IF_FAILURE( platform_gpio_output_high( wiced_bt_control_pins[ WICED_BT_PIN_POWER ] ) );
}
if ( wiced_bt_uart_config.flow_control == FLOW_CONTROL_DISABLED )
{
/* Configure RTS pin to output. Set to HIGH */
RETURN_IF_FAILURE( platform_gpio_init( wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS], OUTPUT_OPEN_DRAIN_PULL_UP ) );
RETURN_IF_FAILURE( platform_gpio_output_high( wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS] ) );
/* Configure CTS pin to input pull-up */
RETURN_IF_FAILURE( platform_gpio_init( wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS], INPUT_PULL_UP ) );
}
if ( wiced_bt_control_pins[ WICED_BT_PIN_RESET ] != NULL )
{
RETURN_IF_FAILURE( platform_gpio_init( wiced_bt_control_pins[ WICED_BT_PIN_RESET ], OUTPUT_PUSH_PULL ) );
RETURN_IF_FAILURE( platform_gpio_output_high( wiced_bt_control_pins[ WICED_BT_PIN_RESET ] ) );
/* Configure USART comms */
RETURN_IF_FAILURE( bluetooth_wiced_init_config_uart( &wiced_bt_uart_config ) );
/* Reset bluetooth chip */
RETURN_IF_FAILURE( platform_gpio_output_low( wiced_bt_control_pins[ WICED_BT_PIN_RESET ] ) );
wiced_rtos_delay_milliseconds( 10 );
RETURN_IF_FAILURE( platform_gpio_output_high( wiced_bt_control_pins[ WICED_BT_PIN_RESET ] ) );
}
else
{
/* Configure USART comms */
RETURN_IF_FAILURE( bluetooth_wiced_init_config_uart( &wiced_bt_uart_config ) );
}
wiced_rtos_delay_milliseconds( BLUETOOTH_CHIP_STABILIZATION_DELAY );
if ( wiced_bt_uart_config.flow_control == FLOW_CONTROL_DISABLED )
{
/* Bluetooth chip is ready. Pull host's RTS low */
RETURN_IF_FAILURE( platform_gpio_output_low( wiced_bt_uart_pins[WICED_BT_PIN_UART_RTS] ) );
}
/* Wait for Bluetooth chip to pull its RTS (host's CTS) low. From observation using CRO, it takes the bluetooth chip > 170ms to pull its RTS low after CTS low */
while ( platform_gpio_input_get( wiced_bt_uart_pins[ WICED_BT_PIN_UART_CTS ] ) == WICED_TRUE )
{
wiced_rtos_delay_milliseconds( 10 );
}
return WICED_SUCCESS;
}
OSStatus platform_spi_transfer( platform_spi_driver_t* driver, const platform_spi_config_t* config, const platform_spi_message_segment_t* segments, uint16_t number_of_segments )
{
OSStatus err = kNoErr;
uint32_t count = 0;
uint16_t i;
platform_mcu_powersave_disable();
require_action_quiet( ( driver != NULL ) && ( config != NULL ) && ( segments != NULL ) && ( number_of_segments != 0 ), exit, err = kParamErr);
/* Activate chip select */
platform_gpio_output_low( config->chip_select );
for ( i = 0; i < number_of_segments; i++ )
{
/* Check if we are using DMA */
if ( config->mode & SPI_USE_DMA )
{
if( segments[ i ].length != 0){
//platform_log( "length: %d, i:%d", segments[ i ].length, i );
spi_dma_config( driver->peripheral, &segments[ i ] );
err = spi_dma_transfer( driver->peripheral, config );
require_noerr(err, cleanup_transfer);
}
}
else
{
count = segments[i].length;
/* in interrupt-less mode */
if ( config->bits == 8 )
{
const uint8_t* send_ptr = ( const uint8_t* )segments[i].tx_buffer;
uint8_t* rcv_ptr = ( uint8_t* )segments[i].rx_buffer;
while ( count-- )
{
uint16_t data = 0xFF;
if ( send_ptr != NULL )
{
data = *send_ptr++;
}
data = spi_transfer( driver->peripheral, data );
if ( rcv_ptr != NULL )
{
*rcv_ptr++ = (uint8_t)data;
}
}
}
else if ( config->bits == 16 )
{
const uint16_t* send_ptr = (const uint16_t *) segments[i].tx_buffer;
uint16_t* rcv_ptr = (uint16_t *) segments[i].rx_buffer;
/* Check that the message length is a multiple of 2 */
require_action_quiet( ( count % 2 ) == 0, cleanup_transfer, err = kSizeErr);
/* Transmit/receive data stream, 16-bit at time */
while ( count != 0 )
{
uint16_t data = 0xFFFF;
if ( send_ptr != NULL )
{
data = *send_ptr++;
}
data = spi_transfer( driver->peripheral, data );
if ( rcv_ptr != NULL )
{
*rcv_ptr++ = data;
}
count -= 2;
}
}
}
}
cleanup_transfer:
/* Deassert chip select */
platform_gpio_output_high( config->chip_select );
exit:
platform_mcu_powersave_enable( );
return err;
}
OSStatus platform_spi_init( platform_spi_driver_t* driver, const platform_spi_t* peripheral, const platform_spi_config_t* config )
{
SPI_InitTypeDef spi_init;
OSStatus err;
platform_mcu_powersave_disable();
require_action_quiet( ( driver != NULL ) && ( peripheral != NULL ) && ( config != NULL ), exit, err = kParamErr);
/* Calculate prescaler */
err = calculate_prescaler( config->speed, &spi_init.SPI_BaudRatePrescaler );
require_noerr(err, exit);
/* Configure data-width */
if ( config->bits == 8 )
{
spi_init.SPI_DataSize = SPI_DataSize_8b;
}
else if ( config->bits == 16 )
{
require_action( !(config->mode & SPI_USE_DMA), exit, err = kUnsupportedErr);
spi_init.SPI_DataSize = SPI_DataSize_16b;
}
else
{
err = kUnsupportedErr;
goto exit;
}
/* Configure MSB or LSB */
if ( config->mode & SPI_MSB_FIRST )
{
spi_init.SPI_FirstBit = SPI_FirstBit_MSB;
}
else
{
spi_init.SPI_FirstBit = SPI_FirstBit_LSB;
}
/* Configure mode CPHA and CPOL */
if ( config->mode & SPI_CLOCK_IDLE_HIGH )
{
spi_init.SPI_CPOL = SPI_CPOL_High;
}
else
{
spi_init.SPI_CPOL = SPI_CPOL_Low;
}
if ( config->mode & SPI_CLOCK_RISING_EDGE )
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_2Edge : SPI_CPHA_1Edge;
}
else
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_1Edge : SPI_CPHA_2Edge;
}
driver->peripheral = (platform_spi_t *)peripheral;
/* Init SPI GPIOs */
platform_gpio_set_alternate_function( peripheral->pin_clock->port, peripheral->pin_clock->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, peripheral->gpio_af );
platform_gpio_set_alternate_function( peripheral->pin_mosi->port, peripheral->pin_mosi->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, peripheral->gpio_af );
platform_gpio_set_alternate_function( peripheral->pin_miso->port, peripheral->pin_miso->pin_number, GPIO_OType_PP, GPIO_PuPd_UP, peripheral->gpio_af );
/* Init the chip select GPIO */
platform_gpio_init( config->chip_select, OUTPUT_PUSH_PULL );
platform_gpio_output_high( config->chip_select );
/* Enable SPI peripheral clock */
(peripheral->peripheral_clock_func)( peripheral->peripheral_clock_reg, ENABLE );
(peripheral->peripheral_clock_func)( peripheral->peripheral_clock_reg, ENABLE );
SPI_I2S_DeInit( peripheral->port );
spi_init.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
spi_init.SPI_Mode = SPI_Mode_Master;
spi_init.SPI_NSS = SPI_NSS_Soft;
spi_init.SPI_CRCPolynomial = 0x7; /* reset value */
SPI_CalculateCRC( peripheral->port, DISABLE );
/* Init and enable SPI */
SPI_Init( peripheral->port, &spi_init );
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Rx, DISABLE );
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Tx, DISABLE );
SPI_Cmd ( peripheral->port, ENABLE );
if ( config->mode & SPI_USE_DMA ){
DMA_DeInit( peripheral->rx_dma.stream );
DMA_DeInit( peripheral->tx_dma.stream );
if ( peripheral->tx_dma.controller == DMA1 )
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA1;
}
else
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA2;
}
if ( peripheral->rx_dma.controller == DMA1 )
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA1;
}
else
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA2;
}
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Rx, ENABLE );
SPI_I2S_DMACmd( peripheral->port, SPI_I2S_DMAReq_Tx, ENABLE );
}
exit:
platform_mcu_powersave_enable();
return err;
}
platform_result_t platform_spi_transfer( const platform_spi_t* spi, const platform_spi_config_t* config, const platform_spi_message_segment_t* segments, uint16_t number_of_segments )
{
platform_result_t result = PLATFORM_SUCCESS;
uint32_t count = 0;
uint16_t i;
wiced_assert( "bad argument", ( spi != NULL ) && ( config != NULL ) && ( segments != NULL ) && ( number_of_segments != 0 ) );
platform_mcu_powersave_disable();
/* Activate chip select */
platform_gpio_output_low( config->chip_select );
for ( i = 0; i < number_of_segments; i++ )
{
/* Check if we are using DMA */
if ( config->mode & SPI_USE_DMA )
{
spi_dma_config( spi, &segments[ i ] );
result = spi_dma_transfer( spi, config );
if ( result != PLATFORM_SUCCESS )
{
goto cleanup_transfer;
}
}
else
{
count = segments[i].length;
/* in interrupt-less mode */
if ( config->bits == 8 )
{
const uint8_t* send_ptr = ( const uint8_t* )segments[i].tx_buffer;
uint8_t* rcv_ptr = ( uint8_t* )segments[i].rx_buffer;
while ( count-- )
{
uint16_t data = 0xFF;
if ( send_ptr != NULL )
{
data = *send_ptr++;
}
data = spi_transfer( spi, data );
if ( rcv_ptr != NULL )
{
*rcv_ptr++ = (uint8_t)data;
}
}
}
else if ( config->bits == 16 )
{
const uint16_t* send_ptr = (const uint16_t *) segments[i].tx_buffer;
uint16_t* rcv_ptr = (uint16_t *) segments[i].rx_buffer;
/* Check that the message length is a multiple of 2 */
if ( ( count % 2 ) != 0 )
{
result = WICED_ERROR;
goto cleanup_transfer;
}
/* Transmit/receive data stream, 16-bit at time */
while ( count != 0 )
{
uint16_t data = 0xFFFF;
if ( send_ptr != NULL )
{
data = *send_ptr++;
}
data = spi_transfer( spi, data );
if ( rcv_ptr != NULL )
{
*rcv_ptr++ = data;
}
count -= 2;
}
}
}
}
cleanup_transfer:
/* Deassert chip select */
platform_gpio_output_high( config->chip_select );
platform_mcu_powersave_enable( );
return result;
}
// Magicoe OSStatus platform_spi_init( const platform_spi_t* spi, const platform_spi_config_t* config )
OSStatus platform_spi_init( platform_spi_driver_t* driver, const platform_spi_t* peripheral, const platform_spi_config_t* config )
{
// SPI_InitTypeDef spi_init;
OSStatus err = kNoErr;
platform_mcu_powersave_disable();
uint32_t t1; //general var
require_action_quiet( ( peripheral != NULL ) && ( config != NULL ), exit, err = kParamErr);
require_action_quiet( ( peripheral->port == LPC_SPI0 ), exit, err = kParamErr);
driver->isRxDone = driver->isTxDone = 0;
#ifndef NO_MICO_RTOS
if (driver->sem_xfer_done == 0)
mico_rtos_init_semaphore(&driver->sem_xfer_done, 1);
#endif
// >>> Init Pin mux
t1 = IOCON_MODE_INACT | IOCON_DIGITAL_EN | IOCON_INPFILT_OFF;
if (peripheral->port == LPC_SPI0)
{
if (config->speed >= 24000000)
t1 |= 1UL<<9; // enable fast slew
g_pIO->PIO[0][11] = IOCON_FUNC1 | t1;/* SPI0_SCK */
g_pIO->PIO[0][12] = IOCON_FUNC1 | t1; /* SPI0_MOSI */
g_pIO->PIO[0][13] = IOCON_FUNC1 | t1; /* SPI0_MISO */
// config CS pin as GPIO
g_pIO->PIO[config->chip_select->port][config->chip_select->pin_number] = IOCON_FUNC0 | IOCON_MODE_INACT | IOCON_DIGITAL_EN | IOCON_INPFILT_OFF;
platform_gpio_output_high(config->chip_select);
platform_gpio_init(config->chip_select, OUTPUT_PUSH_PULL);
}
// <<<
// >>>
// initialize SPI peripheral
{
uint32_t bv;
LPC_SPI_T *pSPI = peripheral->port;
// >>>
bv = pSPI == LPC_SPI0 ? 1UL << 9 : 1UL<<10;
g_pASys->ASYNCAPBCLKCTRLSET = bv; // enable clock to SPI
g_pASys->ASYNCPRESETCTRLSET = bv;
g_pASys->ASYNCPRESETCTRLCLR = bv;
// <<<
// predly | postDly| fraDly | xferDly
pSPI->DLY = 1UL<<0 | 1UL<<4 | 1UL<<8 | 1UL<<12;
pSPI->DLY = 0;
t1 = Chip_Clock_GetAsyncSyscon_ClockRate();
t1 = (t1 + config->speed - 1) / config->speed;
pSPI->DIV = t1 - 1; // proper division
pSPI->TXCTRL = (config->bits - 1) << 24; // 8 bits per frame
// Enable | master | no loopback
t1 = 1UL<<0 | 1UL<<2 | 0UL<<7;
// determine SPI mode
if (config->mode & SPI_CLOCK_IDLE_HIGH) {
t1 |= 1UL<<5; // CPOL = 1
if (t1 & SPI_CLOCK_RISING_EDGE)
t1 |= 1UL<<4; // CPHA = 1
} else {
if (!(t1 & SPI_CLOCK_RISING_EDGE))
t1 |= 1UL<<4;
}
pSPI->CFG = t1;
}
// <<<
g_pDMA->DMACOMMON[0].ENABLESET = (1UL<<peripheral->dmaRxChnNdx) | (1UL<<peripheral->dmaTxChnNdx);
g_pDMA->DMACOMMON[0].INTENSET = (1UL<<peripheral->dmaRxChnNdx) | (1UL<<peripheral->dmaTxChnNdx);
g_pDMA->DMACH[peripheral->dmaRxChnNdx].CFG = DMA_CFG_PERIPHREQEN | DMA_CFG_TRIGBURST_SNGL | DMA_CFG_CHPRIORITY(1);
g_pDMA->DMACH[peripheral->dmaTxChnNdx].CFG = DMA_CFG_PERIPHREQEN | DMA_CFG_TRIGBURST_SNGL | DMA_CFG_CHPRIORITY(1);
exit:
platform_mcu_powersave_enable();
return err;
}
OSStatus host_platform_bus_init( void )
{
pdc_packet_t pdc_spi_packet;
Pdc* spi_pdc = spi_get_pdc_base( wifi_spi.port );
platform_mcu_powersave_disable( );
mico_rtos_init_semaphore( &spi_transfer_finished_semaphore, 1 );
/* Setup the SPI lines */
platform_gpio_peripheral_pin_init( wifi_spi.mosi_pin, ( wifi_spi.mosi_pin_mux_mode | IOPORT_MODE_PULLUP ) );
platform_gpio_peripheral_pin_init( wifi_spi.miso_pin, ( wifi_spi.miso_pin_mux_mode | IOPORT_MODE_PULLUP ) );
platform_gpio_peripheral_pin_init( wifi_spi.clock_pin, ( wifi_spi.clock_pin_mux_mode | IOPORT_MODE_PULLUP ) );
/* Setup the interrupt input for WLAN_IRQ */
platform_gpio_init( &wifi_spi_pins[WIFI_PIN_SPI_IRQ], INPUT_HIGH_IMPEDANCE );
platform_gpio_irq_enable( &wifi_spi_pins[WIFI_PIN_SPI_IRQ], IRQ_TRIGGER_RISING_EDGE, spi_irq_handler, 0 );
/* Setup SPI slave select GPIOs */
platform_gpio_init( &wifi_spi_pins[WIFI_PIN_SPI_CS], OUTPUT_PUSH_PULL );
platform_gpio_output_high( &wifi_spi_pins[WIFI_PIN_SPI_CS] );
#if defined ( MICO_WIFI_USE_GPIO_FOR_BOOTSTRAP )
/* Set GPIO_B[1:0] to 01 to put WLAN module into gSPI mode */
platform_gpio_init( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_0], OUTPUT_PUSH_PULL );
platform_gpio_output_high( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_0] );
platform_gpio_init( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_1], OUTPUT_PUSH_PULL );
platform_gpio_output_low( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_1] );
#endif
/* Enable the peripheral and set SPI mode. */
flexcom_enable( flexcom_base[ wifi_spi.spi_id ] );
flexcom_set_opmode( flexcom_base[ wifi_spi.spi_id ], FLEXCOM_SPI );
/* Init pdc, and clear RX TX. */
pdc_spi_packet.ul_addr = 0;
pdc_spi_packet.ul_size = 1;
pdc_tx_init( spi_pdc, &pdc_spi_packet, NULL );
pdc_rx_init( spi_pdc, &pdc_spi_packet, NULL );
spi_disable_interrupt(wifi_spi.port, 0xffffffff );
spi_disable( wifi_spi.port );
spi_reset( wifi_spi.port );
spi_set_lastxfer( wifi_spi.port );
spi_set_master_mode( wifi_spi.port );
spi_disable_mode_fault_detect( wifi_spi.port );
spi_set_clock_polarity( wifi_spi.port, 0, SPI_CLK_POLARITY );
spi_set_clock_phase( wifi_spi.port, 0, SPI_CLK_PHASE );
spi_set_bits_per_transfer( wifi_spi.port, 0, SPI_CSR_BITS_8_BIT );
spi_set_baudrate_div( wifi_spi.port, 0, (sysclk_get_cpu_hz() / SPI_BAUD_RATE) );
spi_set_transfer_delay( wifi_spi.port, 0, 0, 0 );
/* 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 ARMCM4 interrupt priority logic is inverted, the highest value */
/* is the lowest priority */
/* Configure SPI interrupts . */
NVIC_EnableIRQ( platform_flexcom_irq_numbers[wifi_spi.spi_id] );
spi_enable(wifi_spi.port);
platform_mcu_powersave_enable( );
return kNoErr;
}
OSStatus host_platform_bus_init( void )
{
SPI_InitTypeDef spi_init;
DMA_InitTypeDef dma_init_structure;
uint32_t a;
platform_mcu_powersave_disable();
mico_rtos_init_semaphore(&spi_transfer_finished_semaphore, 1);
/* Enable SPI_SLAVE DMA clock */
if ( wifi_spi.tx_dma.controller == DMA1 )
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA1;
}
else
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA2;
}
if ( wifi_spi.rx_dma.controller == DMA1 )
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA1;
}
else
{
RCC->AHB1ENR |= RCC_AHB1Periph_DMA2;
}
/* Enable SPI_SLAVE Periph clock */
(wifi_spi.peripheral_clock_func)( wifi_spi.peripheral_clock_reg, ENABLE );
/* Enable SYSCFG. Needed for selecting EXTI interrupt line */
RCC_APB2PeriphClockCmd( RCC_APB2Periph_SYSCFG, ENABLE );
/* Setup the interrupt input for WLAN_IRQ */
platform_gpio_init( &wifi_spi_pins[WIFI_PIN_SPI_IRQ], INPUT_HIGH_IMPEDANCE );
platform_gpio_irq_enable( &wifi_spi_pins[WIFI_PIN_SPI_IRQ], IRQ_TRIGGER_RISING_EDGE, spi_irq_handler, 0 );
/* Setup SPI slave select GPIOs */
platform_gpio_init( &wifi_spi_pins[WIFI_PIN_SPI_CS], OUTPUT_PUSH_PULL );
platform_gpio_output_high( &wifi_spi_pins[WIFI_PIN_SPI_CS] );
/* Setup the SPI lines */
for ( a = WIFI_PIN_SPI_CLK; a < WIFI_PIN_SPI_MAX; a++ )
{
platform_gpio_set_alternate_function( wifi_spi_pins[ a ].port, wifi_spi_pins[ a ].pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, wifi_spi.gpio_af );
}
#if defined ( MICO_WIFI_USE_GPIO_FOR_BOOTSTRAP )
/* Set GPIO_B[1:0] to 01 to put WLAN module into gSPI mode */
platform_gpio_init( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_0], OUTPUT_PUSH_PULL );
platform_gpio_output_high( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_0] );
platform_gpio_init( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_1], OUTPUT_PUSH_PULL );
platform_gpio_output_low( &wifi_control_pins[WIFI_PIN_BOOTSTRAP_1] );
#endif
/* Setup DMA for SPIX RX */
DMA_DeInit( wifi_spi.rx_dma.stream );
dma_init_structure.DMA_Channel = wifi_spi.rx_dma.channel;
dma_init_structure.DMA_PeripheralBaseAddr = (uint32_t) &(wifi_spi.port->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( wifi_spi.rx_dma.stream, &dma_init_structure );
/* Setup DMA for SPIX TX */
DMA_DeInit( wifi_spi.tx_dma.stream );
dma_init_structure.DMA_Channel = wifi_spi.tx_dma.channel;
dma_init_structure.DMA_PeripheralBaseAddr = (uint32_t) &(wifi_spi.port->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( wifi_spi.tx_dma.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_EnableIRQ( wifi_spi.rx_dma.irq_vector );
/* Enable DMA for TX */
SPI_I2S_DMACmd( wifi_spi.port, 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( wifi_spi.port, &spi_init );
SPI_Cmd( wifi_spi.port, ENABLE );
platform_mcu_powersave_enable();
return kNoErr;
}
OSStatus MicoGpioOutputHigh( mico_gpio_t gpio )
{
if ( gpio >= MICO_GPIO_NONE )
return kUnsupportedErr;
return (OSStatus) platform_gpio_output_high( &platform_gpio_pins[gpio] );
}
platform_result_t platform_spi_init( const platform_spi_t* spi, const platform_spi_config_t* config )
{
SPI_InitTypeDef spi_init;
platform_result_t result;
uint8_t spi_number;
wiced_assert( "bad argument", ( spi != NULL ) && ( config != NULL ) );
platform_mcu_powersave_disable();
spi_number = platform_spi_get_port_number( spi->port );
/* Init SPI GPIOs */
platform_gpio_set_alternate_function( spi->pin_clock->port, spi->pin_clock->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, spi->gpio_af );
platform_gpio_set_alternate_function( spi->pin_mosi->port, spi->pin_mosi->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, spi->gpio_af );
platform_gpio_set_alternate_function( spi->pin_miso->port, spi->pin_miso->pin_number, GPIO_OType_PP, GPIO_PuPd_NOPULL, spi->gpio_af );
/* Init the chip select GPIO */
platform_gpio_init( config->chip_select, OUTPUT_PUSH_PULL );
platform_gpio_output_high( config->chip_select );
/* Calculate prescaler */
result = calculate_prescaler( config->speed, &spi_init.SPI_BaudRatePrescaler );
if ( result != PLATFORM_SUCCESS )
{
platform_mcu_powersave_enable();
return result;
}
/* Configure data-width */
if ( config->bits == 8 )
{
spi_init.SPI_DataSize = SPI_DataSize_8b;
}
else if ( config->bits == 16 )
{
if ( config->mode & SPI_USE_DMA )
{
platform_mcu_powersave_enable();
/* 16 bit mode is not supported for a DMA */
return PLATFORM_UNSUPPORTED;
}
spi_init.SPI_DataSize = SPI_DataSize_16b;
}
else
{
platform_mcu_powersave_enable();
/* Requested mode is not supported */
return PLATFORM_UNSUPPORTED;
}
/* Configure MSB or LSB */
if ( config->mode & SPI_MSB_FIRST )
{
spi_init.SPI_FirstBit = SPI_FirstBit_MSB;
}
else
{
spi_init.SPI_FirstBit = SPI_FirstBit_LSB;
}
/* Configure mode CPHA and CPOL */
if ( config->mode & SPI_CLOCK_IDLE_HIGH )
{
spi_init.SPI_CPOL = SPI_CPOL_High;
}
else
{
spi_init.SPI_CPOL = SPI_CPOL_Low;
}
if ( config->mode & SPI_CLOCK_RISING_EDGE )
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_2Edge : SPI_CPHA_1Edge;
}
else
{
spi_init.SPI_CPHA = ( config->mode & SPI_CLOCK_IDLE_HIGH ) ? SPI_CPHA_1Edge : SPI_CPHA_2Edge;
}
/* Enable SPI peripheral clock */
spi_peripheral_clock_functions[ spi_number ]( spi_peripheral_clocks[ spi_number ], ENABLE );
spi_init.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
spi_init.SPI_Mode = SPI_Mode_Master;
spi_init.SPI_NSS = SPI_NSS_Soft;
spi_init.SPI_CRCPolynomial = 0x7; /* reset value */
SPI_CalculateCRC( spi->port, DISABLE );
/* Init and enable SPI */
SPI_Init( spi->port, &spi_init );
SPI_Cmd ( spi->port, ENABLE );
platform_mcu_powersave_enable();
return WICED_SUCCESS;
}
