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Adds updated working logic for multiplexing expansion header and LCD
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@rosahay-silabs
rosahay-silabs committed May 16, 2023
1 parent 6c2719a commit c13ec57
Showing 1 changed file with 66 additions and 15 deletions.
81 changes: 66 additions & 15 deletions examples/platform/silabs/efr32/rs911x/hal/efx_spi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -78,8 +78,11 @@ extern SPIDRV_Handle_t sl_spidrv_exp_handle;
#error "Unknown platform"
#endif

// variable to identify spi configured for expansion header
// EUSART configuration available on the SPIDRV
static bool spi_enabled = false;

extern void rsi_gpio_irq_cb(uint8_t irqnum);
// #define RS911X_USE_LDMA

/********************************************************
* @fn sl_wfx_host_gpio_init(void)
Expand Down Expand Up @@ -114,6 +117,8 @@ void sl_wfx_host_gpio_init(void)
// Change GPIO interrupt priority (FreeRTOS asserts unless this is done here!)
NVIC_SetPriority(GPIO_EVEN_IRQn, WFX_SPI_NVIC_PRIORITY);
NVIC_SetPriority(GPIO_ODD_IRQn, WFX_SPI_NVIC_PRIORITY);
spi_enabled = true;
SILABS_LOG("%s completed.", __func__)
}

/*****************************************************************
Expand All @@ -136,6 +141,7 @@ void sl_wfx_host_reset_chip(void)

// Delay for 3ms
vTaskDelay(pdMS_TO_TICKS(3));
SILABS_LOG("%s completed.", __func__)
}

/*****************************************************************
Expand All @@ -156,82 +162,122 @@ void rsi_hal_board_init(void)
#endif /* EFR32MG24 */

/* GPIO INIT of MG12 & MG24 : Reset, Wakeup, Interrupt */
SILABS_LOG("RSI_HAL: init GPIO");
sl_wfx_host_gpio_init();

/* Reset of Wifi chip */
SILABS_LOG("RSI_HAL: Reset Wifi");
sl_wfx_host_reset_chip();
SILABS_LOG("RSI_HAL: Init done");
SILABS_LOG("%s completed.", __func__)
}

#if defined(EFR32MG24)
sl_status_t sl_wfx_host_spi_cs_assert()
{
SILABS_LOG("%s started.", __func__)
configASSERT(spi_sem_sync_hdl);
if (xSemaphoreTake(spi_sem_sync_hdl, portMAX_DELAY) != pdTRUE)
{
SILABS_LOG("%s errored.", __func__)
return SL_STATUS_TIMEOUT;
}
SPIDRV_DeInit(SL_SPIDRV_HANDLE);
SPIDRV_Init(SL_SPIDRV_HANDLE, &sl_spidrv_eusart_init_exp);
// if (spi_enabled)
// {
// SPIDRV_DeInit(SL_SPIDRV_HANDLE);
// SILABS_LOG("%s did deinit.", __func__)
// spi_enabled = false;
// }
if (!spi_enabled) // Reduce SPIDRV_Init
{
SPIDRV_Init(SL_SPIDRV_HANDLE, &sl_spidrv_eusart_init_exp);
spi_enabled = true;
}
GPIO_PinOutClear(SL_SPIDRV_EUSART_EXP_CS_PORT, SL_SPIDRV_EUSART_EXP_CS_PIN);
SILABS_LOG("%s completed.", __func__)
return SL_STATUS_OK;
}

sl_status_t sl_wfx_host_spi_cs_deassert()
{
SILABS_LOG("%s started.", __func__)
if (spi_enabled)
{
SPIDRV_DeInit(SL_SPIDRV_HANDLE);
spi_enabled = false;
}
GPIO_PinOutSet(SL_SPIDRV_EUSART_EXP_CS_PORT, SL_SPIDRV_EUSART_EXP_CS_PIN);
SPIDRV_DeInit(SL_SPIDRV_HANDLE);
// TODO: should be done by deinit, check once.
GPIO->EUSARTROUTE[SL_SPIDRV_EUSART_EXP_PERIPHERAL_NO].ROUTEEN = 0;
xSemaphoreGive(spi_sem_sync_hdl);
SILABS_LOG("%s completed.", __func__)
return SL_STATUS_OK;
}

void sl_wfx_host_spiflash_cs_assert(void)
void sl_wfx_host_spiflash_cs_assert()
{
SILABS_LOG("%s started.", __func__)
GPIO_PinOutClear(SL_MX25_FLASH_SHUTDOWN_CS_PORT, SL_MX25_FLASH_SHUTDOWN_CS_PIN);
SILABS_LOG("%s completed.", __func__)
}

void sl_wfx_host_spiflash_cs_deassert(void)
void sl_wfx_host_spiflash_cs_deassert()
{
SILABS_LOG("%s started.", __func__)
GPIO_PinOutSet(SL_MX25_FLASH_SHUTDOWN_CS_PORT, SL_MX25_FLASH_SHUTDOWN_CS_PIN);
SILABS_LOG("%s completed.", __func__)
}

void sl_wfx_host_pre_bootloader_spi_transfer(void)
void sl_wfx_host_pre_bootloader_spi_transfer()
{
SILABS_LOG("%s started.", __func__)
if (xSemaphoreTake(spi_sem_sync_hdl, portMAX_DELAY) != pdTRUE)
{
return;
}
if (spi_enabled)
{
SPIDRV_DeInit(SL_SPIDRV_HANDLE);
spi_enabled = false;
}
bootloader_init();
// bootloader_init takes care of SPIDRV_Init()
sl_wfx_host_spiflash_cs_assert();
SILABS_LOG("%s completed.", __func__)
}

void sl_wfx_host_post_bootloader_spi_transfer(void)
void sl_wfx_host_post_bootloader_spi_transfer()
{
SILABS_LOG("%s started.", __func__)
bootloader_deinit();
GPIO->USARTROUTE[0].ROUTEEN = 0;
sl_wfx_host_spiflash_cs_deassert();
xSemaphoreGive(spi_sem_sync_hdl);
SILABS_LOG("%s completed.", __func__)
}

void sl_wfx_host_pre_lcd_spi_transfer(void)
void sl_wfx_host_pre_lcd_spi_transfer()
{
SILABS_LOG("%s started.", __func__)
if (xSemaphoreTake(spi_sem_sync_hdl, portMAX_DELAY) != pdTRUE)
{
return;
}
SPIDRV_ReInit(SL_BIT_RATE_LCD);
if (spi_enabled)
{
SPIDRV_DeInit(SL_SPIDRV_HANDLE);
spi_enabled = false;
}
sl_memlcd_refresh(sl_memlcd_get());
// sl_memlcd_refresh takes care of SPIDRV_Init()
SILABS_LOG("%s completed.", __func__)
}

void sl_wfx_host_post_lcd_spi_transfer(void)
void sl_wfx_host_post_lcd_spi_transfer()
{
SILABS_LOG("%s started.", __func__)
USART_Enable(SL_MEMLCD_SPI_PERIPHERAL, usartDisable);
CMU_ClockEnable(SPI_CLOCK(SL_MEMLCD_SPI_PERIPHERAL_NO), false);
GPIO->USARTROUTE[SL_MEMLCD_SPI_PERIPHERAL_NO].ROUTEEN = 0;
xSemaphoreGive(spi_sem_sync_hdl);
SILABS_LOG("%s completed.", __func__)
}

#endif /* EFR32MG24 */
Expand Down Expand Up @@ -270,12 +316,16 @@ static void spi_dmaTransfertComplete(SPIDRV_HandleData_t * pxHandle, Ecode_t tra
**************************************************************************/
int16_t rsi_spi_transfer(uint8_t * tx_buf, uint8_t * rx_buf, uint16_t xlen, uint8_t mode)
{
SILABS_LOG("%s started.", __func__)
#if defined(EFR32MG24)
sl_wfx_host_spi_cs_assert();
#endif /* EFR32MG24 */
// at least one buffer needs to be provided
/*
TODO: tx_buf and rx_buf needs to be replaced with a dummy buffer of length xlen to align with SDK of WiFi
*/
if (xlen <= MIN_XLEN || (tx_buf == NULL && rx_buf == NULL))
{
SILABS_LOG("%s error.", __func__)
return RSI_ERROR_INVALID_PARAM;
}

Expand Down Expand Up @@ -333,5 +383,6 @@ int16_t rsi_spi_transfer(uint8_t * tx_buf, uint8_t * rx_buf, uint16_t xlen, uint
#if defined(EFR32MG24)
sl_wfx_host_spi_cs_deassert();
#endif /* EFR32MG24 */
SILABS_LOG("%s completed.", __func__)
return rsiError;
}

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