configs/nucleo-l432kc: Fix RAM size; STM31L4x2xx has only 64Kb of RAM. Remove references to I2C and SDIO: There is no I2C2 or SDIO on the STM32F4x2xx.

configs/nucleo-l432kc/README.txt

@@ -20,7 +20,6 @@ NucleoL432KC:
   SPIs:           Up to 2 SPIs
   SAIs:           1 dual-channel audio interface
   CAN interface
-  SDIO interface
   QSPI interface
   USB:            USB 2.0 full-speed device/host/OTG controller with on-chip PHY
   CRC calculation unit

configs/nucleo-l432kc/include/board.h

@@ -125,17 +125,6 @@
    (GPIO_OUTPUT | GPIO_OPENDRAIN | GPIO_SPEED_50MHz | GPIO_OUTPUT_SET | \
     GPIO_PORTB | GPIO_PIN7)
 
-#define GPIO_I2C2_SCL \
-   (GPIO_I2C2_SCL_1 | GPIO_OPENDRAIN | GPIO_SPEED_50MHz | GPIO_OUTPUT_SET)
-#define GPIO_I2C2_SDA \
-   (GPIO_I2C2_SDA_1 | GPIO_OPENDRAIN | GPIO_SPEED_50MHz | GPIO_OUTPUT_SET)
-#define GPIO_I2C2_SCL_GPIO \
-   (GPIO_OUTPUT | GPIO_OPENDRAIN | GPIO_SPEED_50MHz | GPIO_OUTPUT_SET | \
-    GPIO_PORTB | GPIO_PIN10)
-#define GPIO_I2C2_SDA_GPIO \
-   (GPIO_OUTPUT | GPIO_OPENDRAIN | GPIO_SPEED_50MHz | GPIO_OUTPUT_SET | \
-    GPIO_PORTB | GPIO_PIN11)
-
 /* SPI */
 
 /* SPI1 is available on the arduino protocol at positions D11/12/13 */

configs/nucleo-l432kc/include/nucleo-l432kc.h

@@ -83,7 +83,7 @@
  *   Flash Latency(WS)             : 4
  *   Prefetch Buffer               : OFF
  *   48MHz for USB OTG FS,         : Doable if required using PLLSAI1 or MSI
- *   SDIO and RNG clock
+ *   RNG clock
  */
 
 /* HSI - 16 MHz RC factory-trimmed
@@ -190,7 +190,6 @@
  * UART5
  * LPUART1
  * I2C1
- * I2C2
  * I2C3
  * LPTIM1
  * LPTIM2

configs/nucleo-l432kc/nsh/defconfig

@@ -38,7 +38,7 @@ CONFIG_NSH_READLINE=y
 CONFIG_PREALLOC_MQ_MSGS=4
 CONFIG_PREALLOC_TIMERS=4
 CONFIG_PREALLOC_WDOGS=8
-CONFIG_RAM_SIZE=98304
+CONFIG_RAM_SIZE=65536
 CONFIG_RAM_START=0x20000000
 CONFIG_RAW_BINARY=y
 CONFIG_RR_INTERVAL=200

configs/nucleo-l432kc/src/nucleo-l432kc.h

@@ -54,7 +54,6 @@
 
 #define HAVE_PROC             1
 #define HAVE_RTC_DRIVER       1
-#define HAVE_MMCSD 1
 
 #if !defined(CONFIG_FS_PROCFS)
 #  undef HAVE_PROC
@@ -71,11 +70,6 @@
 #  undef HAVE_RTC_DRIVER
 #endif
 
-#if !defined(CONFIG_STM32L4_SDIO) || !defined(CONFIG_MMCSD) || \
-    !defined(CONFIG_MMCSD_SDIO)
-#  undef HAVE_MMCSD
-#endif
-
 /* LED.  User LD3: the green LED is a user LED connected to Arduino signal D13
  * corresponding to MCU I/O PB3 (pin 26)
  * target.

configs/nucleo-l432kc/src/stm32_appinit.c

@@ -170,37 +170,6 @@ int board_app_initialize(uintptr_t arg)
     }
 #endif
 
-#ifdef HAVE_MMCSD
-  /* First, get an instance of the SDIO interface */
-
-  g_sdio = sdio_initialize(CONFIG_NSH_MMCSDSLOTNO);
-  if (!g_sdio)
-    {
-      syslog(LOG_ERR, "ERROR: Failed to initialize SDIO slot %d\n",
-             CONFIG_NSH_MMCSDSLOTNO);
-      return -ENODEV;
-    }
-
-  /* Now bind the SDIO interface to the MMC/SD driver */
-
-  ret = mmcsd_slotinitialize(CONFIG_NSH_MMCSDMINOR, g_sdio);
-  if (ret != OK)
-    {
-      syslog(LOG_ERR,
-             "ERROR: Failed to bind SDIO to the MMC/SD driver: %d\n",
-             ret);
-      return ret;
-    }
-
-  /* Then let's guess and say that there is a card in the slot. There is no
-   * card detect GPIO.
-   */
-
-  sdio_mediachange(g_sdio, true);
-
-  syslog(LOG_INFO, "[boot] Initialized SDIO\n");
-#endif
-
 #ifdef CONFIG_PWM
   /* Initialize PWM and register the PWM device. */
 

configs/nucleo-l432kc/src/stm32_spi.c

@@ -85,10 +85,6 @@ void stm32l4_spiinitialize(void)
 
   g_spi1 = stm32l4_spibus_initialize(1);
 
-#ifdef HAVE_MMCSD
-  stm32l4_configgpio(GPIO_SPI_CS_SD_CARD);
-#endif
-
   spiinfo("SPI1 initialized\n");
 #endif
 
@@ -133,13 +129,6 @@ void stm32l4_spi1select(FAR struct spi_dev_s *dev, uint32_t devid, bool selected
 {
   spiinfo("devid: %08X CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
 
-#ifdef HAVE_MMCSD
-  if (devid == SPIDEV_MMCSD(0))
-    {
-      stm32l4_gpiowrite(GPIO_SPI_CS_SD_CARD, !selected);
-    }
-#endif
-
 }
 
 uint8_t stm32l4_spi1status(FAR struct spi_dev_s *dev, uint32_t devid)