arch/stm32h7: 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 · f972e1b · f972e1b
1 parent b535740
commit f972e1b
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/arch/arm/src/stm32h7/stm32_pwm.c b/arch/arm/src/stm32h7/stm32_pwm.c
@@ -4227,6 +4227,14 @@ static int pwm_stop(struct pwm_lowerhalf_s *dev)
 
   regval &= ~resetbit;
   putreg32(regval, regaddr);
+
+  /* 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);
 
   pwminfo("regaddr: %08" PRIx32 " resetbit: %08" PRIx32 "\n",