nrf/soft_pwm: Ensure duty_width can't be used uninitialised.

Signed-off-by: Andrew Leech <[email protected]>
andrewleech · Jul 23, 2024 · ffe7814 · ffe7814
1 parent 7aa5fbf
commit ffe7814
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/ports/nrf/modules/machine/soft_pwm.c b/ports/nrf/modules/machine/soft_pwm.c
@@ -199,6 +199,8 @@ static void machine_soft_pwm_start(machine_pwm_obj_t *self) {
             duty_width = self->duty * DUTY_FULL_SCALE / 65536;
         } else if (self->duty_mode == DUTY_NS) {
             duty_width = (uint64_t)self->duty * self->freq * DUTY_FULL_SCALE / 1000000000ULL;
+        } else {
+            mp_raise_ValueError(MP_ERROR_TEXT("invalid duty mode"));
         }
         pwm_set_duty_cycle(self->pwm_pin, duty_width);
     }