arch/stm32f7: Clear all PWM channel when during STOP

I noticed when executing pwm STOP command in multichannel mode, the channel still outputting. This commit fixes this issue. Signed-off-by: Alan C. Assis <[email protected]>
acassis · Feb 15, 2024 · b535740 · b535740
1 parent f631ffb
commit b535740
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/arch/arm/src/stm32f7/stm32_pwm.c b/arch/arm/src/stm32f7/stm32_pwm.c
@@ -4007,6 +4007,13 @@ static int pwm_stop(struct pwm_lowerhalf_s *dev)
   outputs = pwm_outputs_from_channels(priv);
   ret = pwm_outputs_enable(dev, outputs, false);
 
+  /* Clear all channels */
+
+  pwm_putreg(priv, STM32_GTIM_CCR1_OFFSET, 0);
+  pwm_putreg(priv, STM32_GTIM_CCR2_OFFSET, 0);
+  pwm_putreg(priv, STM32_GTIM_CCR3_OFFSET, 0);
+  pwm_putreg(priv, STM32_GTIM_CCR4_OFFSET, 0);
+
   leave_critical_section(flags);
 
   pwm_dumpregs(dev, "After stop");