Fix setting PWM to 0 issue

Timer resets cnt register to 0x1 when timer period end. Setting pwm register to 0 causes problem because cnt register never be equal to pwm register and output signal never toggle its state. To fix this problem set pwm register to 1 instead of 0 for 0 pwm value. Signed-off-by: Furkan Akkiz <[email protected]>
analogdevicesinc · Dec 14, 2023 · 2d2a6b7 · 2d2a6b7
1 parent 56e58ce
commit 2d2a6b7
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/Libraries/PeriphDrivers/Source/TMR/tmr_revb.c b/Libraries/PeriphDrivers/Source/TMR/tmr_revb.c
@@ -278,12 +278,12 @@ int MXC_TMR_RevB_SetPWM(mxc_tmr_revb_regs_t *tmr, uint32_t pwm)
         MXC_TMR_RevB_ClearFlags(tmr); // Clear flags so we can catch the next one
         while (!MXC_TMR_RevB_GetFlags(tmr)) {} // Wait for next PWM transition
         MXC_TMR_RevB_Stop(tmr); // Pause timer
-        MXC_TMR_RevB_SetCount(tmr, 0); // Reset the count
+        MXC_TMR_RevB_SetCount(tmr, 1); // Reset the count
         MXC_TMR_RevB_ClearFlags(
             tmr); // Clear flags since app code wants the new PWM transitions set by this function
     }
 
-    tmr->pwm = pwm;
+    tmr->pwm = pwm ? pwm : 1;
     while (!(tmr->intfl & MXC_F_TMR_REVB_INTFL_WRDONE_A)) {}
 
     if (timera_is_running) {