stmhal: Add support for NUCLEO_F446RE board.

stmhal/adc.c

@@ -93,7 +93,7 @@
 #elif defined(STM32F427xx) || defined(STM32F429xx) || \
       defined(STM32F437xx) || defined(STM32F439xx) || \
       defined(STM32F746xx) || defined(STM32F767xx) || \
-      defined(STM32F769xx)
+      defined(STM32F769xx) || defined(STM32F446xx)
 #define VBAT_DIV (4)
 #elif defined(STM32L476xx)
 #define VBAT_DIV (3)

stmhal/boards/NUCLEO_F446RE/mpconfigboard.h

@@ -0,0 +1,64 @@
+#define MICROPY_HW_BOARD_NAME       "NUCLEO-F446RE"
+#define MICROPY_HW_MCU_NAME         "STM32F446xx"
+
+#define MICROPY_HW_HAS_SWITCH       (1)
+#define MICROPY_HW_HAS_FLASH        (1)
+#define MICROPY_HW_ENABLE_RTC       (1)
+
+// HSE is 8MHz, CPU freq set to 168MHz. Using PLLQ for USB this gives a nice
+// 48 MHz clock for USB. To goto 180 MHz, I think that USB would need to be
+// configured to use PLLSAI
+#define MICROPY_HW_CLK_PLLM (8)
+#define MICROPY_HW_CLK_PLLN (336)
+#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
+#define MICROPY_HW_CLK_PLLQ (7)
+
+// UART config
+#define MICROPY_HW_UART2_TX     (pin_A2)
+#define MICROPY_HW_UART2_RX     (pin_A3)
+#define MICROPY_HW_UART6_TX     (pin_C6)
+#define MICROPY_HW_UART6_RX     (pin_C7)
+// UART 2 connects to the STM32F103 (STLINK) on the Nucleo board
+// and this is exposed as a USB Serial port.
+#define MICROPY_HW_UART_REPL        PYB_UART_2
+#define MICROPY_HW_UART_REPL_BAUD   115200
+
+// I2C busses
+#define MICROPY_HW_I2C1_SCL (pin_B6)        // Arduino D10, pin 17 on CN10
+#define MICROPY_HW_I2C1_SDA (pin_B7)        //              pin 21 on CN7
+#define MICROPY_HW_I2C2_SCL (pin_B10)       // Arduino D6,  pin 25 on CN10
+#define MICROPY_HW_I2C2_SDA (pin_B3)        // Arduino D3,  pin 31 on CN10
+#define MICROPY_HW_I2C3_SCL (pin_A8)        // Arduino D7,  pin 23 on CN10
+#define MICROPY_HW_I2C3_SDA (pin_C9)        //              pin  1 on CN10
+
+// SPI busses
+#define MICROPY_HW_SPI1_NSS     (pin_A15)   //              pin 17 on CN7
+#define MICROPY_HW_SPI1_SCK     (pin_A5)    // Arduino D13, pin 11 on CN10
+#define MICROPY_HW_SPI1_MISO    (pin_A6)    // Arduino D12, pin 13 on CN10
+#define MICROPY_HW_SPI1_MOSI    (pin_A7)    // Arduino D11, pin 15 on CN10
+
+#define MICROPY_HW_SPI2_NSS     (pin_B12)   //              pin 16 on CN10
+#define MICROPY_HW_SPI2_SCK     (pin_B13)   //              pin 30 on CN10
+#define MICROPY_HW_SPI2_MISO    (pin_B14)   //              pin 28 on CN10
+#define MICROPY_HW_SPI2_MOSI    (pin_B15)   //              pin 26 on CN10
+
+#define MICROPY_HW_SPI3_NSS     (pin_A4)    // Arduino A2,  pin 32 on CN7
+#define MICROPY_HW_SPI3_SCK     (pin_B3)    // Arduino D3,  pin 31 on CN10
+#define MICROPY_HW_SPI3_MISO    (pin_B4)    // Arduino D5,  pin 27 on CN10
+#define MICROPY_HW_SPI3_MOSI    (pin_B5)    // Arduino D4,  pin 29 on CN10
+
+#define MICROPY_HW_SPI4_NSS     (pin_B12)   //              pin 16 on CN10
+#define MICROPY_HW_SPI4_SCK     (pin_B13)   //              pin 30 on CN10
+#define MICROPY_HW_SPI4_MISO    (pin_A1)    //              pin 30 on CN7
+#define MICROPY_HW_SPI4_MOSI    (pin_A11)   //              pin 14 on CN10
+
+// 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_A5) // Green LD2 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))

stmhal/boards/NUCLEO_F446RE/mpconfigboard.mk

@@ -0,0 +1,4 @@
+MCU_SERIES = f4
+CMSIS_MCU = STM32F446xx
+AF_FILE = boards/stm32f429_af.csv
+LD_FILE = boards/stm32f411.ld

stmhal/boards/NUCLEO_F446RE/pins.csv

@@ -0,0 +1,72 @@
+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
+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,PA5
+SW,PC13