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samples: rgb_led: add support for PWM flags

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Pass PWM flags set in the device tree, if any, to the
pwm_pin_set_usec() functions.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2019-11-26 09:48:05 +01:00 • committed by Carles Cufí
commit 3407eaeeca
1 changed files with 21 additions and 5 deletions
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26
samples/basic/rgb_led/src/main.c
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@ -26,10 +26,25 @@
*/ */
#define PWM_DEV0 DT_ALIAS_RED_PWM_LED_PWMS_CONTROLLER #define PWM_DEV0 DT_ALIAS_RED_PWM_LED_PWMS_CONTROLLER
#define PWM_CH0 DT_ALIAS_RED_PWM_LED_PWMS_CHANNEL #define PWM_CH0 DT_ALIAS_RED_PWM_LED_PWMS_CHANNEL
#ifdef DT_ALIAS_RED_PWM_LED_PWMS_FLAGS
#define PWM_FLAGS0 DT_ALIAS_RED_PWM_LED_PWMS_FLAGS
#else
#define PWM_FLAGS0 0
#endif
#define PWM_DEV1 DT_ALIAS_GREEN_PWM_LED_PWMS_CONTROLLER #define PWM_DEV1 DT_ALIAS_GREEN_PWM_LED_PWMS_CONTROLLER
#define PWM_CH1 DT_ALIAS_GREEN_PWM_LED_PWMS_CHANNEL #define PWM_CH1 DT_ALIAS_GREEN_PWM_LED_PWMS_CHANNEL
#ifdef DT_ALIAS_GREEN_PWM_LED_PWMS_FLAGS
#define PWM_FLAGS1 DT_ALIAS_GREEN_PWM_LED_PWMS_FLAGS
#else
#define PWM_FLAGS1 0
#endif
#define PWM_DEV2 DT_ALIAS_BLUE_PWM_LED_PWMS_CONTROLLER #define PWM_DEV2 DT_ALIAS_BLUE_PWM_LED_PWMS_CONTROLLER
#define PWM_CH2 DT_ALIAS_BLUE_PWM_LED_PWMS_CHANNEL #define PWM_CH2 DT_ALIAS_BLUE_PWM_LED_PWMS_CHANNEL
#ifdef DT_ALIAS_BLUE_PWM_LED_PWMS_FLAGS
#define PWM_FLAGS2 DT_ALIAS_BLUE_PWM_LED_PWMS_FLAGS
#else
#define PWM_FLAGS2 0
#endif
#else #else
#error "Choose supported board or add new board for the application" #error "Choose supported board or add new board for the application"
#endif #endif
@ -44,9 +59,9 @@
#define STEPSIZE 2000 #define STEPSIZE 2000
static int write_pin(struct device *pwm_dev, u32_t pwm_pin, static int write_pin(struct device *pwm_dev, u32_t pwm_pin,
u32_t pulse_width) u32_t pulse_width, pwm_flags_t flags)
{ {
return pwm_pin_set_usec(pwm_dev, pwm_pin, PERIOD, pulse_width, 0); return pwm_pin_set_usec(pwm_dev, pwm_pin, PERIOD, pulse_width, flags);
} }
void main(void) void main(void)
@ -68,7 +83,7 @@ void main(void)
for (pulse_width0 = 0U; pulse_width0 <= PERIOD; for (pulse_width0 = 0U; pulse_width0 <= PERIOD;
pulse_width0 += STEPSIZE) { pulse_width0 += STEPSIZE) {
if (write_pin(pwm_dev[0], PWM_CH0, if (write_pin(pwm_dev[0], PWM_CH0,
pulse_width0) != 0) { pulse_width0, PWM_FLAGS0) != 0) {
printk("pin 0 write fails!\n"); printk("pin 0 write fails!\n");
return; return;
} }
@ -76,7 +91,7 @@ void main(void)
for (pulse_width1 = 0U; pulse_width1 <= PERIOD; for (pulse_width1 = 0U; pulse_width1 <= PERIOD;
pulse_width1 += STEPSIZE) { pulse_width1 += STEPSIZE) {
if (write_pin(pwm_dev[1], PWM_CH1, if (write_pin(pwm_dev[1], PWM_CH1,
pulse_width1) != 0) { pulse_width1, PWM_FLAGS1) != 0) {
printk("pin 1 write fails!\n"); printk("pin 1 write fails!\n");
return; return;
} }
@ -84,7 +99,8 @@ void main(void)
for (pulse_width2 = 0U; pulse_width2 <= PERIOD; for (pulse_width2 = 0U; pulse_width2 <= PERIOD;
pulse_width2 += STEPSIZE) { pulse_width2 += STEPSIZE) {
if (write_pin(pwm_dev[2], PWM_CH2, if (write_pin(pwm_dev[2], PWM_CH2,
pulse_width2) != 0) { pulse_width2,
PWM_FLAGS2) != 0) {
printk("pin 2 write fails!\n"); printk("pin 2 write fails!\n");
return; return;
} }