[nrf fromlist] drivers: pwm: nrfx: Add idle output to PWM driver.

Fast PWM120 prevents GPIO from driving pin with low/high state when PWM duty is 0% or 100%. Idleout feature needs to be used. It can be configured when PWM is disabled and works while it is enabled. Upstream PR #: 83652 Signed-off-by: Michał Stasiak <[email protected]>
nrfconnect · Jan 8, 2025 · 6c532a1 · 6c532a1
1 parent 1d687c4
commit 6c532a1
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/drivers/pwm/pwm_nrfx.c b/drivers/pwm/pwm_nrfx.c
@@ -233,7 +233,13 @@ static int pwm_nrfx_set_cycles(const struct device *dev, uint32_t channel,
 				out_level ^= 1;
 			}
 
+#if NRF_PWM_HAS_IDLEOUT
+			nrfx_pwm_stop(&config->pwm, true);
+			nrfy_pwm_channel_idle_set(config->pwm.p_reg, channel, out_level);
+			nrfy_pwm_enable(config->pwm.p_reg);
+#else
 			nrf_gpio_pin_write(psel, out_level);
+#endif
 		}
 
 		data->pwm_needed &= ~BIT(channel);