[DNM]pwm test patch

Author: feilongfl

samples/basic/blinky_pwm/src/main.c

@@ -27,7 +27,7 @@
 #define PWM_FLAGS	0
 #endif
 
-#define MIN_PERIOD_USEC	(USEC_PER_SEC / 128U)
+#define MIN_PERIOD_USEC	(USEC_PER_SEC / 10240)
 #define MAX_PERIOD_USEC	USEC_PER_SEC
 
 void main(void)
@@ -58,6 +58,7 @@ void main(void)
 	while (pwm_pin_set_usec(pwm, PWM_CHANNEL,
 				max_period, max_period / 2U, PWM_FLAGS)) {
 		max_period /= 2U;
+		printk("INFO: Try PWM period %u\n", max_period);
 		if (max_period < (4U * MIN_PERIOD_USEC)) {
 			printk("Error: PWM device "
 			       "does not support a period at least %u\n",

samples/basic/fade_led/src/main.c

@@ -32,7 +32,7 @@
  * threshold. The steps should also be small enough, and happen
  * quickly enough, to make the output fade change appear continuous.
  */
-#define PERIOD_USEC	20000U
+#define PERIOD_USEC	200U
 #define NUM_STEPS	50U
 #define STEP_USEC	(PERIOD_USEC / NUM_STEPS)
 #define SLEEP_MSEC	25U