stm32/boards/NUCLEO_L4A6ZG: Add new board definition.

Signed-off-by: Damien George <damien@micropython.org>

ports/stm32/boards/NUCLEO_L4A6ZG/board.json

@@ -0,0 +1,15 @@
+{
+    "deploy": [
+        "../deploy.md"
+    ],
+    "docs": "",
+    "features": [],
+    "images": [
+        "nucleo_l4a6zg.jpg"
+    ],
+    "mcu": "stm32l4",
+    "product": "Nucleo L4A6ZG",
+    "thumbnail": "",
+    "url": "",
+    "vendor": "ST Microelectronics"
+}

ports/stm32/boards/NUCLEO_L4A6ZG/mpconfigboard.h

@@ -0,0 +1,85 @@
+#define MICROPY_HW_BOARD_NAME       "NUCLEO-L4A6ZG"
+#define MICROPY_HW_MCU_NAME         "STM32L4A6ZG"
+
+#define MICROPY_HW_HAS_SWITCH       (1)
+#define MICROPY_HW_HAS_FLASH        (1)
+#define MICROPY_HW_ENABLE_RNG       (1)
+#define MICROPY_HW_ENABLE_RTC       (1)
+#define MICROPY_HW_ENABLE_USB       (1)
+#define MICROPY_HW_ENABLE_DAC       (1)
+
+// MSI is used and is 4MHz
+#define MICROPY_HW_CLK_PLLM         (1)
+#define MICROPY_HW_CLK_PLLN         (40)
+#define MICROPY_HW_CLK_PLLP         (RCC_PLLP_DIV7)
+#define MICROPY_HW_CLK_PLLQ         (RCC_PLLQ_DIV2)
+#define MICROPY_HW_CLK_PLLR         (RCC_PLLR_DIV2)
+
+#define MICROPY_HW_FLASH_LATENCY    FLASH_LATENCY_4
+
+// The board has an external 32kHz crystal
+#define MICROPY_HW_RTC_USE_LSE      (1)
+
+// USART1 config
+#define MICROPY_HW_UART1_TX         (pin_A9)
+#define MICROPY_HW_UART1_RX         (pin_A10)
+// USART2 config
+#define MICROPY_HW_UART2_TX         (pin_A2)
+#define MICROPY_HW_UART2_RX         (pin_A3)
+#define MICROPY_HW_UART2_RTS        (pin_A1)
+#define MICROPY_HW_UART2_CTS        (pin_A0)
+// USART3 config
+#define MICROPY_HW_UART3_TX         (pin_C4)
+#define MICROPY_HW_UART3_RX         (pin_C5)
+#define MICROPY_HW_UART3_RTS        (pin_B14)
+#define MICROPY_HW_UART3_CTS        (pin_B13)
+// UART4 config
+#define MICROPY_HW_UART4_TX         (pin_A0)
+#define MICROPY_HW_UART4_RX         (pin_A1)
+// UART5 config
+#define MICROPY_HW_UART5_TX         (pin_C12)
+#define MICROPY_HW_UART5_RX         (pin_D2)
+// LPUART config
+#define MICROPY_HW_LPUART1_TX       (pin_G7)
+#define MICROPY_HW_LPUART1_RX       (pin_G8)
+// LPUART1 is connected to the virtual com portlon the ST-Link
+#define MICROPY_HW_UART_REPL        PYB_LPUART_1
+#define MICROPY_HW_UART_REPL_BAUD   115200
+
+// I2C buses
+#define MICROPY_HW_I2C1_SCL         (pin_B8)
+#define MICROPY_HW_I2C1_SDA         (pin_B9)
+#define MICROPY_HW_I2C2_SCL         (pin_B10)
+#define MICROPY_HW_I2C2_SDA         (pin_B11)
+#define MICROPY_HW_I2C3_SCL         (pin_C0)
+#define MICROPY_HW_I2C3_SDA         (pin_C1)
+
+// SPI buses
+#define MICROPY_HW_SPI1_NSS         (pin_A4)
+#define MICROPY_HW_SPI1_SCK         (pin_B3)
+#define MICROPY_HW_SPI1_MISO        (pin_B4)
+#define MICROPY_HW_SPI1_MOSI        (pin_B5)
+#define MICROPY_HW_SPI2_NSS         (pin_B12)
+#define MICROPY_HW_SPI2_SCK         (pin_B13)
+#define MICROPY_HW_SPI2_MISO        (pin_B14)
+#define MICROPY_HW_SPI2_MOSI        (pin_B15)
+
+// CAN buses
+#define MICROPY_HW_CAN1_TX          (pin_A12)
+#define MICROPY_HW_CAN1_RX          (pin_A11)
+
+// USRSW is pulled low. Pressing the button makes the input go high.
+#define MICROPY_HW_USRSW_PIN        (pin_C13)
+#define MICROPY_HW_USRSW_PULL       (GPIO_NOPULL)
+#define MICROPY_HW_USRSW_EXTI_MODE  (GPIO_MODE_IT_FALLING)
+#define MICROPY_HW_USRSW_PRESSED    (0)
+
+// LEDs
+#define MICROPY_HW_LED1             (pin_C7) // Green LED on Nucleo
+#define MICROPY_HW_LED2             (pin_B7) // Blue LED on Nucleo
+#define MICROPY_HW_LED3             (pin_B14) // Red LED on Nucleo
+#define MICROPY_HW_LED_ON(pin)      (mp_hal_pin_high(pin))
+#define MICROPY_HW_LED_OFF(pin)     (mp_hal_pin_low(pin))
+
+// USB config
+#define MICROPY_HW_USB_FS           (1)

ports/stm32/boards/NUCLEO_L4A6ZG/mpconfigboard.mk

@@ -0,0 +1,5 @@
+MCU_SERIES = l4
+CMSIS_MCU = STM32L4A6xx
+AF_FILE = boards/stm32l496_af.csv
+LD_FILES = boards/stm32l496xg.ld boards/common_basic.ld
+OPENOCD_CONFIG = boards/openocd_stm32l4.cfg

ports/stm32/boards/NUCLEO_L4A6ZG/pins.csv

@@ -0,0 +1,77 @@
+D0,PA3
+D1,PA2
+D2,PA10
+D3,PB3
+D4,PB5
+D5,PB4
+D6,PB10
+D7,PA8
+D8,PA9
+D9,PC7
+D10,PB6
+D11,PA7
+D12,PA6
+D13,PA5
+D14,PB9
+D15,PB8
+A0,PA0
+A1,PA1
+A2,PA4
+A3,PB0
+A4,PC1
+A5,PC0
+PA0,PA0
+PA1,PA1
+PA2,PA2
+PA3,PA3
+PA4,PA4
+PA5,PA5
+PA6,PA6
+PA7,PA7
+PA8,PA8
+PA9,PA9
+PA10,PA10
+PA11,PA11
+PA12,PA12
+PA15,PA15
+PB0,PB0
+PB1,PB1
+PB2,PB2
+PB3,PB3
+PB4,PB4
+PB5,PB5
+PB6,PB6
+PB7,PB7
+PB8,PB8
+PB9,PB9
+PB10,PB10
+PB11,PB11
+PB12,PB12
+PB13,PB13
+PB14,PB14
+PB15,PB15
+PC0,PC0
+PC1,PC1
+PC2,PC2
+PC3,PC3
+PC4,PC4
+PC5,PC5
+PC6,PC6
+PC7,PC7
+PC8,PC8
+PC9,PC9
+PC10,PC10
+PC11,PC11
+PC12,PC12
+PC13,PC13
+PC14,PC14
+PC15,PC15
+PD2,PD2
+PH0,PH0
+PH1,PH1
+LED_GREEN,PC7
+LED_RED,PB14
+LED_BLUE,PB7
+SW,PC13
+LPUART1_TX,PG7
+LPUART1_RX,PG8

ports/stm32/boards/NUCLEO_L4A6ZG/stm32l4xx_hal_conf.h

@@ -0,0 +1,20 @@
+/* This file is part of the MicroPython project, http://micropython.org/
+ * The MIT License (MIT)
+ * Copyright (c) 2019 Damien P. George
+ */
+#ifndef MICROPY_INCLUDED_STM32L4XX_HAL_CONF_H
+#define MICROPY_INCLUDED_STM32L4XX_HAL_CONF_H
+
+#include "boards/stm32l4xx_hal_conf_base.h"
+
+// Oscillator values in Hz
+#define HSE_VALUE (8000000)
+#define LSE_VALUE (32768)
+#define EXTERNAL_SAI1_CLOCK_VALUE (48000)
+#define EXTERNAL_SAI2_CLOCK_VALUE (48000)
+
+// Oscillator timeouts in ms
+#define HSE_STARTUP_TIMEOUT (100)
+#define LSE_STARTUP_TIMEOUT (5000)
+
+#endif // MICROPY_INCLUDED_STM32L4XX_HAL_CONF_H