samples: pwm: update PWM sample to support ST Nucleo boards (7e631bd0) · Commits · Wenxi XU / zephyr

samples/drivers/pwm/blink_led/README

+8 −0

Original line number	Diff line number	Diff line
		@@ -11,3 +11,11 @@ Arduino 101 and Quark D2000 CRB
		===========
		You will need to connect the LED to ground and PWM0 via the shield.
		You may need a current limiting resistor. See your LED datasheet.

		Nucleo_F401RE and Nucleo_L476RG
		===============================
		Connect PWM2(PA0) to LED

		Nucleo_F103RB
		=============
		Connect PWM1(PA8) to LED

+15 −3

Original line number	Diff line number	Diff line
		@@ -25,6 +25,17 @@
		#include <device.h>
		#include <pwm.h>

		#if defined(CONFIG_SOC_STM32F401XE) \|\| defined(CONFIG_SOC_STM32L476XX)
		#define PWM_DRIVER "PWM_2"
		#define PWM_CHANNEL 1
		#elif CONFIG_SOC_STM32F103XB
		#define PWM_DRIVER "PWM_1"
		#define PWM_CHANNEL 1
		#else
		#define PWM_DRIVER "PWM_0"
		#define PWM_CHANNEL 0
		#endif

		/* in micro second */
		#define MIN_PERIOD 2000

		@@ -39,14 +50,15 @@ void main(void)

		printk("PWM demo app-blink LED\n");

		pwm_dev = device_get_binding("PWM_0");
		pwm_dev = device_get_binding(PWM_DRIVER);
		if (!pwm_dev) {
		printk("Cannot find PWM_0!\n");
		printk("Cannot find %s!\n", PWM_DRIVER);
		return;
		}

		while (1) {
		if (pwm_pin_set_usec(pwm_dev, 0, period, period / 2)) {
		if (pwm_pin_set_usec(pwm_dev, PWM_CHANNEL,
		period, period / 2)) {
		printk("pwm pin set fails\n");
		return;
		}

+2 −2

Original line number	Diff line number	Diff line
		[test]
		build_only = true
		tags = apps
		arch_whitelist = x86
		platform_whitelist = arduino_101 quark_d2000_crb
		arch_whitelist = x86 arm
		platform_whitelist = arduino_101 quark_d2000_crb nucleo_f103rb nucleo_f401re nucleo_l476rg

+8 −0

Original line number	Diff line number	Diff line
		@@ -11,3 +11,11 @@ Arduino 101 and Quark D2000 CRB
		You will need to connect the LED to ground and PWM0 via
		the shield. You may need a current limiting resistor. See
		your LED datasheet.

		Nucleo_F401RE and Nucleo_L476RG
		===============================
		Connect PWM2(PA0) to LED

		Nucleo_F103RB
		=============
		Connect PWM1(PA8) to LED

+15 −3

Original line number	Diff line number	Diff line
		@@ -25,6 +25,17 @@
		#include <device.h>
		#include <pwm.h>

		#if defined(CONFIG_SOC_STM32F401XE) \|\| defined(CONFIG_SOC_STM32L476XX)
		#define PWM_DRIVER "PWM_2"
		#define PWM_CHANNEL 1
		#elif CONFIG_SOC_STM32F103XB
		#define PWM_DRIVER "PWM_1"
		#define PWM_CHANNEL 1
		#else
		#define PWM_DRIVER "PWM_0"
		#define PWM_CHANNEL 0
		#endif

		/*
		* 50 is flicker fusion threshold. Modulated light will be perceived
		* as steady by our eyes when blinking rate is at least 50.
		@@ -42,14 +53,15 @@ void main(void)

		printk("PWM demo app-fade LED\n");

		pwm_dev = device_get_binding("PWM_0");
		pwm_dev = device_get_binding(PWM_DRIVER);
		if (!pwm_dev) {
		printk("Cannot find PWM_0!\n");
		printk("Cannot find %s!\n", PWM_DRIVER);
		return;
		}

		while (1) {
		if (pwm_pin_set_usec(pwm_dev, 0, PERIOD, pulse_width)) {
		if (pwm_pin_set_usec(pwm_dev, PWM_CHANNEL,
		PERIOD, pulse_width)) {
		printk("pwm pin set fails\n");
		return;
		}