boards/stm32f746g-disco: add SD Card interface support

RIOT-OS · Jun 24, 2023 · f46e59e · f46e59e
1 parent 458f5bc
commit f46e59e
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Showing 5 changed files with 58 additions and 6 deletions.
diff --git a/boards/stm32f746g-disco/Kconfig b/boards/stm32f746g-disco/Kconfig
@@ -21,6 +21,7 @@ config BOARD_STM32F746G_DISCO
     select HAS_PERIPH_RTT
     select HAS_PERIPH_SPI
     select HAS_PERIPH_TIMER
+    select HAS_PERIPH_SDMMC
     select HAS_PERIPH_UART
     select HAS_PERIPH_USBDEV
     select HAS_PERIPH_USBDEV_HS
@@ -34,7 +35,7 @@ config BOARD_STM32F746G_DISCO
     select HAVE_SAUL_GPIO
     select HAVE_STM32_ETH
     select HAVE_FT5X06
-
+    select HAVE_MTD_SDMMC_DEFAULT
 
 config CLOCK_HSE
     default 25000000

diff --git a/boards/stm32f746g-disco/Makefile.dep b/boards/stm32f746g-disco/Makefile.dep
@@ -13,3 +13,14 @@ endif
 ifneq (,$(filter touch_dev,$(USEMODULE)))
   USEMODULE += ft5x06
 endif
+
+# default to using fatfs on SD card
+ifneq (,$(filter vfs_default,$(USEMODULE)))
+  USEMODULE += fatfs_vfs
+  USEMODULE += mtd
+endif
+
+ifneq (,$(filter mtd,$(USEMODULE)))
+  USEMODULE += mtd_sdmmc_default
+  USEMODULE += periph_sdmmc
+endif
diff --git a/boards/stm32f746g-disco/doc.txt b/boards/stm32f746g-disco/doc.txt
@@ -32,6 +32,7 @@ Current hardware support:
 | User microphones | - | |
 | External Quad-SPI Flash | - | |
 | External SDRAM | - | |
+| SD Card Interface | x | SDMMC1 on PC8..PC13 and PD2 |
 
 ## Flashing the device
 

diff --git a/boards/stm32f746g-disco/features-shared.mk b/boards/stm32f746g-disco/features-shared.mk
@@ -5,6 +5,7 @@ FEATURES_PROVIDED += periph_i2c
 FEATURES_PROVIDED += periph_ltdc
 FEATURES_PROVIDED += periph_rtc
 FEATURES_PROVIDED += periph_rtt
+FEATURES_PROVIDED += periph_sdmmc
 FEATURES_PROVIDED += periph_spi
 FEATURES_PROVIDED += periph_timer
 FEATURES_PROVIDED += periph_uart

diff --git a/boards/stm32f746g-disco/include/periph_conf.h b/boards/stm32f746g-disco/include/periph_conf.h
@@ -61,7 +61,7 @@ static const dma_conf_t dma_config[] = {
     { .stream = 6 },    /* DMA1 Stream 6 - USART2_TX */
     { .stream = 3 },    /* DMA1 Stream 3 - SPI2_RX   */
     { .stream = 4 },    /* DMA1 Stream 4 - SPI2_TX   */
-    { .stream = 11 },   /* DMA2 Stream 3 - SPI4_RX   */
+    { .stream = 11 },   /* DMA2 Stream 3 - SPI4_RX Ch5 / SDMMC1 Ch 4 */
     { .stream = 12 },   /* DMA2 Stream 4 - SPI4_TX   */
     { .stream = 8 },    /* DMA2 Stream 0 - ETH_TX    */
 };
@@ -94,7 +94,7 @@ static const uart_conf_t uart_config[] = {
         .tx_af      = GPIO_AF7,
         .bus        = APB2,
         .irqn       = USART1_IRQn,
-#ifdef MODULE_PERIPH_DMA
+#if IS_USED(MODULE_PERIPH_DMA)
         .dma = 0,
         .dma_chan   = 4
 #endif
@@ -108,7 +108,7 @@ static const uart_conf_t uart_config[] = {
         .tx_af      = GPIO_AF7,
         .bus        = APB2,
         .irqn       = USART6_IRQn,
-#ifdef MODULE_PERIPH_DMA
+#if IS_USED(MODULE_PERIPH_DMA)
         .dma = 1,
         .dma_chan   = 5
 #endif
@@ -140,7 +140,7 @@ static const spi_conf_t spi_config[] = {
         .cs_af    = GPIO_AF5,
         .rccmask  = RCC_APB1ENR_SPI2EN,
         .apbbus   = APB1,
-#ifdef MODULE_PERIPH_DMA
+#if IS_USED(MODULE_PERIPH_DMA)
         .tx_dma   = 4,
         .tx_dma_chan = 0,
         .rx_dma   = 3,
@@ -260,7 +260,8 @@ static const ltdc_conf_t ltdc_config = {
     /* values below come from STM32CubeF7 code and differ from the typical
      * values mentioned in the RK043FN48H datasheet. Both sets of values work
      * with the display.
-     * See the discussion in https://community.st.com/s/question/0D50X0000BOvdWP/how-to-set-displays-parameters-
+     * See the discussion in
+     * https://community.st.com/s/question/0D50X0000BOvdWP/how-to-set-displays-parameters-
      */
     .hsync      = 41,
     .vsync      = 10,
@@ -321,6 +322,43 @@ static const dwc2_usb_otg_fshs_config_t dwc2_usb_otg_fshs_config[] = {
 /** @} */
 #endif /* defined(MODULE_PERIPH_USBDEV_HS_ULPI) || DOXYGEN */
 
+/**
+ * @name SDIO/SDMMC configuration
+ * @{
+ */
+
+/**
+ * @brief SDIO/SDMMC static configuration struct
+ */
+static const sdmmc_conf_t sdmmc_config[] = {
+    {
+        .dev = SDMMC1,
+        .bus = APB2,
+        .rcc_mask = RCC_APB2ENR_SDMMC1EN,
+        .cd = GPIO_PIN(PORT_C, 13),
+        .cd_active = 0,             /* CD pin is LOW active */
+        .cd_mode = GPIO_IN_PU,      /* Pull-up R12 not soldered by default */
+        .clk = { GPIO_PIN(PORT_C, 12), GPIO_AF12 },
+        .cmd = { GPIO_PIN(PORT_D,  2), GPIO_AF12 },
+        .dat0 = { GPIO_PIN(PORT_C,  8), GPIO_AF12 },
+        .dat1 = { GPIO_PIN(PORT_C,  9), GPIO_AF12 },
+        .dat2 = { GPIO_PIN(PORT_C, 10), GPIO_AF12 },
+        .dat3 = { GPIO_PIN(PORT_C, 11), GPIO_AF12 },
+#if IS_USED(MODULE_PERIPH_DMA)
+        .dma = 5,
+        .dma_chan = 4,
+#endif
+        .irqn = SDMMC1_IRQn
+    },
+};
+
+/**
+ * @brief Number of available SDIO/SDMMC peripherals
+ */
+#define SDMMC_NUMOF     ARRAY_SIZE(sdmmc_config)
+
+/** @} */
+
 #ifdef __cplusplus
 }
 #endif