samples: blinky_pwm: decreased min PWM period for blinky sample

Blinky PWM sample minimum pwm period was too high for iMX.RT PWM module. decrease the minimum pwm period so sample will pass pwm calibration phase. Fixes #38954 Signed-off-by: Daniel DeGrasse <[email protected]>
zephyrproject-rtos · Feb 10, 2022 · 5094a6e · 5094a6e
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diff --git a/samples/basic/blinky_pwm/README.rst b/samples/basic/blinky_pwm/README.rst
@@ -11,7 +11,7 @@ This application blinks a LED using the :ref:`PWM API <pwm_api>`. See
 :ref:`blinky-sample` for a GPIO-based sample.
 
 The LED starts blinking at a 1 Hz frequency. The frequency doubles every 4
-seconds until it reaches 64 Hz. The frequency will then be halved every 4
+seconds until it reaches 128 Hz. The frequency will then be halved every 4
 seconds until it returns to 1 Hz, completing a single blinking cycle. This
 faster-then-slower blinking cycle then repeats forever.
 

diff --git a/samples/basic/blinky_pwm/src/main.c b/samples/basic/blinky_pwm/src/main.c
@@ -27,7 +27,7 @@
 #define PWM_FLAGS	0
 #endif
 
-#define MIN_PERIOD_USEC	(USEC_PER_SEC / 64U)
+#define MIN_PERIOD_USEC	(USEC_PER_SEC / 128U)
 #define MAX_PERIOD_USEC	USEC_PER_SEC
 
 void main(void)