stmhal: Enable SPI support for F7 MCUs.

stmhal/boards/STM32F7DISC/mpconfigboard.h

@@ -13,7 +13,7 @@
 #define MICROPY_HW_ENABLE_TIMER     (1)
 #define MICROPY_HW_ENABLE_SERVO     (0)
 #define MICROPY_HW_ENABLE_DAC       (0)
-#define MICROPY_HW_ENABLE_SPI1      (1)
+#define MICROPY_HW_ENABLE_SPI1      (0)
 #define MICROPY_HW_ENABLE_SPI2      (1)
 #define MICROPY_HW_ENABLE_SPI3      (0)
 #define MICROPY_HW_ENABLE_CAN       (1)
@@ -60,6 +60,12 @@ void STM32F7DISC_board_early_init(void);
 #define MICROPY_HW_I2C_BAUDRATE_DEFAULT 100000
 #define MICROPY_HW_I2C_BAUDRATE_MAX     100000
 
+// SPI
+#define MICROPY_HW_SPI2_NSS         (pin_I0)
+#define MICROPY_HW_SPI2_SCK         (pin_I1)
+#define MICROPY_HW_SPI2_MISO        (pin_B14)
+#define MICROPY_HW_SPI2_MOSI        (pin_B15)
+
 // USRSW is pulled low. Pressing the button makes the input go high.
 #define MICROPY_HW_USRSW_PIN        (pin_I11)
 #define MICROPY_HW_USRSW_PULL       (GPIO_NOPULL)

stmhal/main.c

@@ -472,9 +472,7 @@ soft_reset:
 #endif
 
     i2c_init0();
-#if !defined(STM32F7) // Temp hack
     spi_init0();
-#endif
     pyb_usb_init0();
 
     // Initialise the local flash filesystem.

stmhal/modpyb.c

@@ -590,9 +590,7 @@ STATIC const mp_map_elem_t pyb_module_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_LED), (mp_obj_t)&pyb_led_type },
 #endif
     { MP_OBJ_NEW_QSTR(MP_QSTR_I2C), (mp_obj_t)&pyb_i2c_type },
-#if !defined(STM32F7) // Temp hack
     { MP_OBJ_NEW_QSTR(MP_QSTR_SPI), (mp_obj_t)&pyb_spi_type },
-#endif
     { MP_OBJ_NEW_QSTR(MP_QSTR_UART), (mp_obj_t)&pyb_uart_type },
 #if MICROPY_HW_ENABLE_CAN
     { MP_OBJ_NEW_QSTR(MP_QSTR_CAN), (mp_obj_t)&pyb_can_type },

stmhal/spi.c

@@ -37,9 +37,29 @@
 #include "spi.h"
 #include MICROPY_HAL_H
 
-#if !defined(STM32F7)
-// The STM32F7 has the SPI pins mapped differently. Need to figure this out
-// before enabling SPI for the F7
+// The following defines are for compatability with the '405
+#if !defined(MICROPY_HW_SPI1_NSS)
+// X-skin: X5=PA4=SPI1_NSS, X6=PA5=SPI1_SCK, X7=PA6=SPI1_MISO, X8=PA7=SPI1_MOSI
+#define MICROPY_HW_SPI1_NSS     (pin_A4)
+#define MICROPY_HW_SPI1_SCK     (pin_A5)
+#define MICROPY_HW_SPI1_MISO    (pin_A6)
+#define MICROPY_HW_SPI1_MOSI    (pin_A7)
+#endif
+
+#if !defined(MICROPY_HW_SPI2_NSS)
+// Y-skin: Y5=PB12=SPI2_NSS, Y6=PB13=SPI2_SCK, Y7=PB14=SPI2_MISO, Y8=PB15=SPI2_MOSI
+#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)
+#endif
+
+#if !defined(MICROPY_HW_SPI3_NSS)
+#define MICROPY_HW_SPI3_NSS     (pin_A4)
+#define MICROPY_HW_SPI3_SCK     (pin_B3)
+#define MICROPY_HW_SPI3_MISO    (pin_B4)
+#define MICROPY_HW_SPI3_MOSI    (pin_B5)
+#endif
 
 /// \moduleref pyb
 /// \class SPI - a master-driven serial protocol
@@ -140,24 +160,22 @@ void spi_init(SPI_HandleTypeDef *spi, bool enable_nss_pin) {
     if (0) {
 #if MICROPY_HW_ENABLE_SPI1
     } else if (spi->Instance == SPI1) {
-        // X-skin: X5=PA4=SPI1_NSS, X6=PA5=SPI1_SCK, X7=PA6=SPI1_MISO, X8=PA7=SPI1_MOSI
         self = &pyb_spi_obj[0];
-        pins[0] = &pin_A4;
-        pins[1] = &pin_A5;
-        pins[2] = &pin_A6;
-        pins[3] = &pin_A7;
+        pins[0] = &MICROPY_HW_SPI1_NSS;
+        pins[1] = &MICROPY_HW_SPI1_SCK;
+        pins[2] = &MICROPY_HW_SPI1_MISO;
+        pins[3] = &MICROPY_HW_SPI1_MOSI;
         GPIO_InitStructure.Alternate = GPIO_AF5_SPI1;
         // enable the SPI clock
         __SPI1_CLK_ENABLE();
 #endif
 #if MICROPY_HW_ENABLE_SPI2
     } else if (spi->Instance == SPI2) {
-        // Y-skin: Y5=PB12=SPI2_NSS, Y6=PB13=SPI2_SCK, Y7=PB14=SPI2_MISO, Y8=PB15=SPI2_MOSI
         self = &pyb_spi_obj[1];
-        pins[0] = &pin_B12;
-        pins[1] = &pin_B13;
-        pins[2] = &pin_B14;
-        pins[3] = &pin_B15;
+        pins[0] = &MICROPY_HW_SPI2_NSS;
+        pins[1] = &MICROPY_HW_SPI2_SCK;
+        pins[2] = &MICROPY_HW_SPI2_MISO;
+        pins[3] = &MICROPY_HW_SPI2_MOSI;
         GPIO_InitStructure.Alternate = GPIO_AF5_SPI2;
         // enable the SPI clock
         __SPI2_CLK_ENABLE();
@@ -165,10 +183,10 @@ void spi_init(SPI_HandleTypeDef *spi, bool enable_nss_pin) {
 #if MICROPY_HW_ENABLE_SPI3
     } else if (spi->Instance == SPI3) {
         self = &pyb_spi_obj[2];
-        pins[0] = &pin_A4;
-        pins[1] = &pin_B3;
-        pins[2] = &pin_B4;
-        pins[3] = &pin_B5;
+        pins[0] = &MICROPY_HW_SPI3_NSS;
+        pins[1] = &MICROPY_HW_SPI3_SCK;
+        pins[2] = &MICROPY_HW_SPI3_MISO;
+        pins[3] = &MICROPY_HW_SPI3_MOSI;
         GPIO_InitStructure.Alternate = GPIO_AF6_SPI3;
         // enable the SPI clock
         __SPI3_CLK_ENABLE();
@@ -670,5 +688,3 @@ const mp_obj_type_t pyb_spi_type = {
     .make_new = pyb_spi_make_new,
     .locals_dict = (mp_obj_t)&pyb_spi_locals_dict,
 };
-
-#endif  // STM32F7