boards/stm32l496g-disco: add SDMMC support

RIOT-OS · Jun 24, 2023 · 7fa75af · 7fa75af
1 parent bbbf4c9
commit 7fa75af
Show file tree

Hide file tree

Showing 5 changed files with 48 additions and 1 deletion.
diff --git a/boards/stm32l496g-disco/Kconfig b/boards/stm32l496g-disco/Kconfig
@@ -22,6 +22,7 @@ config BOARD_STM32L496G_DISCO
     select HAS_PERIPH_RTC
     select HAS_PERIPH_RTT
     select HAS_PERIPH_PWM
+    select HAS_PERIPH_SDMMC
     select HAS_PERIPH_SPI
     select HAS_PERIPH_SPI_STMOD
     select HAS_PERIPH_TIMER

diff --git a/boards/stm32l496g-disco/Makefile.dep b/boards/stm32l496g-disco/Makefile.dep
@@ -17,3 +17,14 @@ ifneq (,$(filter periph_uart,$(USEMODULE)))
     FEATURES_REQUIRED += periph_uart_hw_fc
   endif
 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/stm32l496g-disco/Makefile.features b/boards/stm32l496g-disco/Makefile.features
@@ -10,6 +10,7 @@ FEATURES_PROVIDED += periph_lpuart
 FEATURES_PROVIDED += periph_rtc
 FEATURES_PROVIDED += periph_rtt
 FEATURES_PROVIDED += periph_pwm
+FEATURES_PROVIDED += periph_sdmmc
 FEATURES_PROVIDED += periph_spi
 FEATURES_PROVIDED += periph_spi_stmod
 FEATURES_PROVIDED += periph_timer

diff --git a/boards/stm32l496g-disco/doc.txt b/boards/stm32l496g-disco/doc.txt
@@ -38,7 +38,7 @@ The main features of this board are:
 | SAI audio codec         | - | |
 | External PSRAM          | - | Connected to FMC peripheral (not supported yet) |
 | External Quad-SPI Flash | - | QSPI peripheral is not yet supported |
-| SD Card Interface       | - | |
+| SD Card Interface       | - | SDMMC1 on PC8..PC13/PD2 |
 
 ## Board Configuration (sorted by peripheral):
 

diff --git a/boards/stm32l496g-disco/include/periph_conf.h b/boards/stm32l496g-disco/include/periph_conf.h
@@ -257,6 +257,40 @@ static const pwm_conf_t pwm_config[] = {
 #define PWM_NUMOF           ARRAY_SIZE(pwm_config)
 /** @} */
 
+/**
+ * @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_UNDEF,           /* CD is connected to MFX GPIO8 */
+        .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 = 6,
+        .dma_chan = 7,
+#endif
+        .irqn = SDMMC1_IRQn
+    },
+};
+/**
+ * @brief Number of available SDIO/SDMMC peripherals
+ */
+#define SDMMC_NUMOF     ARRAY_SIZE(sdmmc_config)
+
+/** @} */
+
 /**
  * @name   SPI configuration
  *