Reimplements PWM functions

Author: soburi

cores/scirocco/wiring_analog.c

@@ -60,7 +60,10 @@ void _analogReadResolution(int res)
 
 void analogWrite( uint32_t ulPin, uint32_t ulValue )
 {
-	pwm_pin_set_cycles(NULL, ulPin, pwm_resolution, ulValue);
+	struct device* dev = device_get_binding(W_PWM_DEV_NAME(ulPin));
+	if(!dev) return;
+
+	pwm_pin_set_cycles(dev, ulPin, pwm_resolution, ulValue);
 }
 
 void analogWriteResolution(int res)

cores/scirocco/wiring_private.h

@@ -32,11 +32,29 @@
 extern "C" {
 #endif
 
+#ifndef W_GPIO_PINS_PER_PORT
 #define W_GPIO_PINS_PER_PORT 32
+#endif
+
+#ifndef W_GPIO_PORT_NUM
 #define W_GPIO_PORT_NUM (sizeof(gpio_port_names)/sizeof(const char*))
+#endif
+
+#ifndef W_PIN2PORT
 #define W_PIN2PORT(x) (gpio_port_names[x / W_GPIO_PINS_PER_PORT])
+#endif
+
+#ifndef W_PIN2PORTPIN
 #define W_PIN2PORTPIN(x) (x % W_GPIO_PINS_PER_PORT)
+#endif
+
+#ifndef W_GPIO_PIN_NUM
 #define W_GPIO_PIN_NUM (W_GPIO_PINS_PER_PORT * W_GPIO_PORT_NUM)
+#endif
+
+#ifndef W_PWM_DEV_NAME
+#define W_PWM_DEV_NAME(x) NULL
+#endif
 
 typedef void (*voidFuncPtr)(void);
 

variants/nrf52840_pca10056/prj.conf

@@ -68,3 +68,5 @@ CONFIG_UART_INTERRUPT_DRIVEN=y
 CONFIG_I2C=y
 CONFIG_I2C_NRFX=y
 CONFIG_I2C_0=y
+
+CONFIG_PWM=y

variants/nrf52840_pca10056/variant.h

@@ -31,6 +31,7 @@ extern "C"
 
 #define GPIO_PORT_NAMES	{ DT_GPIO_P0_DEV_NAME, DT_GPIO_P1_DEV_NAME }
 
+#define W_PWM_DEV_NAME(x) DT_NORDIC_NRF_PWM_0_LABEL
 
 /*----------------------------------------------------------------------------
  *        Pins