michaelh/zephyr
1
0
Fork 0
Code Releases Activity

pwm: nrf5_sw: don't disable timer if another channel is still active

Browse source 
Check if all channels are inactive before stopping the timer.

Signed-off-by: Ricardo Salveti <ricardo@opensourcefoundries.com>
This commit is contained in:
Ricardo Salveti 2017-08-28 19:41:56 -03:00 • committed by Anas Nashif
commit 3f1dbfda15
1 changed files with 14 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

17
drivers/pwm/pwm_nrf5_sw.c
View file

@ -110,9 +110,6 @@ static int pwm_nrf5_sw_pin_set(struct device *dev, u32_t pwm,
SYS_LOG_DBG("PWM %d, period %u, pulse %u", pwm,
period_cycles, pulse_cycles);
/* stop timer, if already running */
timer->TASKS_STOP = 1;
/* clear GPIOTE config */
NRF_GPIOTE->CONFIG[config->gpiote_base + channel] = 0;
@ -185,6 +182,20 @@ static int pwm_nrf5_sw_pin_set(struct device *dev, u32_t pwm,
pin_set_pwm_off:
data->map[channel].pulse_cycles = 0;
bool pwm_active = false;
/* stop timer if all channels are inactive */
for (channel = 0; channel < config->map_size; channel++) {
if (data->map[channel].pulse_cycles) {
pwm_active = true;
break;
}
}
if (!pwm_active) {
/* No active PWM, stop timer */
timer->TASKS_STOP = 1;
}
return 0;
}