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samples: blink_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 09:45:12 +01:00 • committed by Carles Cufí
commit edd891adfd
1 changed files with 7 additions and 2 deletions
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9
samples/basic/blink_led/src/main.c
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@ -19,6 +19,11 @@
/* get the defines from dt (based on alias 'pwm-led0') */
#define PWM_DRIVER DT_ALIAS_PWM_LED0_PWMS_CONTROLLER
#define PWM_CHANNEL DT_ALIAS_PWM_LED0_PWMS_CHANNEL
#ifdef DT_ALIAS_PWM_LED0_PWMS_FLAGS
#define PWM_FLAGS DT_ALIAS_PWM_LED0_PWMS_FLAGS
#else
#define PWM_FLAGS 0
#endif
#else
#error "Choose supported PWM driver"
#endif
@ -51,7 +56,7 @@ void main(void)
*/
max_period = MAX_PERIOD;
while (pwm_pin_set_usec(pwm_dev, PWM_CHANNEL,
max_period, max_period / 2U, 0)) {
max_period, max_period / 2U, PWM_FLAGS)) {
max_period /= 2U;
if (max_period < (4U * MIN_PERIOD)) {
printk("This sample needs to set a period that is "
@ -63,7 +68,7 @@ void main(void)
period = max_period;
while (1) {
if (pwm_pin_set_usec(pwm_dev, PWM_CHANNEL,
period, period / 2U, 0)) {
period, period / 2U, PWM_FLAGS)) {
printk("pwm pin set fails\n");
return;
}