Fix oscillator issue, add button and LED pins

Author: hierophect

ports/stm32f4/boards/espruino_pico/pins.c

@@ -25,5 +25,9 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_A10), MP_ROM_PTR(&pin_PA10) },
     { MP_ROM_QSTR(MP_QSTR_B9), MP_ROM_PTR(&pin_PB09) },
     { MP_ROM_QSTR(MP_QSTR_B8), MP_ROM_PTR(&pin_PB08) },
+
+    { MP_ROM_QSTR(MP_QSTR_BTN), MP_ROM_PTR(&pin_PC13) },
+    { MP_ROM_QSTR(MP_QSTR_LED1), MP_ROM_PTR(&pin_PB02) },
+    { MP_ROM_QSTR(MP_QSTR_LED2), MP_ROM_PTR(&pin_PB12) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);

ports/stm32f4/peripherals/stm32f4/stm32f401xe/clocks.c

@@ -25,6 +25,7 @@
  * THE SOFTWARE.
  */
 #include "stm32f4xx_hal.h"
+#include "py/mpconfig.h"
 
 void stm32f4_peripherals_clocks_init(void) {
     //System clock init
@@ -44,7 +45,7 @@ void stm32f4_peripherals_clocks_init(void) {
     RCC_OscInitStruct.HSEState = RCC_HSE_ON;
     RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
     RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
-    RCC_OscInitStruct.PLL.PLLM = 12;
+    RCC_OscInitStruct.PLL.PLLM = BOARD_OSC_DIV;
     RCC_OscInitStruct.PLL.PLLN = 336;
     RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
     RCC_OscInitStruct.PLL.PLLQ = 7;

ports/stm32f4/peripherals/stm32f4/stm32f401xe/gpio.c

@@ -38,7 +38,6 @@ void stm32f4_peripherals_gpio_init(void) {
     __HAL_RCC_GPIOH_CLK_ENABLE();
 
     //Never reset pins
-    never_reset_pin_number(2,13); //PC13 anti tamp
     never_reset_pin_number(2,14); //PC14 OSC32_IN
     never_reset_pin_number(2,15); //PC15 OSC32_OUT
     never_reset_pin_number(0,13); //PA13 SWDIO