new pins info and new pwm pins management

Author: alfran

cores/arduino/boards.cpp

@@ -78,7 +78,7 @@ void init(void) {
 	systick_init(SYSTICK_RELOAD_VAL);
 	gpio_init_all();
 	rcc_clk_enable(RCC_SYSCFG);
-  boardInit();
+  //boardInit();
   startADC();
   setupTimers();
   HAL_Init();
@@ -178,6 +178,6 @@ static void timerDefaultConfig(timer_dev *dev) {
     	case TIMER_BASIC:
         break;
     }
-		
+
     timer_resume(dev);
 }

cores/arduino/boards.h

@@ -113,7 +113,7 @@ void init(void);
  *
  * @see init()
  */
-extern void boardInit(void);
+//extern void boardInit(void);  // alfran: commented to new pin management
 
 /**
  * @brief Test if a pin is used for a special purpose on your board.

cores/arduino/pwm.cpp

@@ -69,7 +69,10 @@ void analogWrite(uint8 pin, uint16 passed_val)
     	{
         	return;
     	}
-
+		  if (PIN_MAP[pin].alternate_function != AFx)
+			{
+				gpio_set_af_mode(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit, PIN_MAP[pin].alternate_function);
+			}
 		timer_set_compare(dev, PIN_MAP[pin].timer_channel, duty_cycle);
 		timer_cc_enable(dev, PIN_MAP[pin].timer_channel);
 		gpio_set_mode(PIN_MAP[pin].gpio_device, PIN_MAP[pin].gpio_bit, GPIO_AF_OUTPUT_PP);

cores/arduino/wiring_types.h

@@ -47,6 +47,7 @@
  * @see stm32_pin_info
  */
 #define ADCx 0xFF
+#define AFx 0xFF  // alfran: added to improove the pwm management
 
 /**
  * @brief Stores STM32-specific information related to a given pin.
@@ -57,6 +58,7 @@ typedef struct stm32_pin_info {
     uint8 gpio_bit;             /**< GPIO port bit. */
     timer_dev *timer_device;    /**< Pin's timer device, if any. */
     uint8 timer_channel;        /**< Timer channel, or 0 if none. */
+    uint8 alternate_function;    /**< Alernate function for PWM. */  // alfran: added to improove the pwm management
     const adc_dev *adc_device;  /**< ADC device, if any. */
     uint8 adc_channel;          /**< Pin ADC channel, or ADCx if none. */
     uint8 filler;