int
PX4FMU::set_pwm_rate(uint32_t rate_map, unsigned default_rate, unsigned alt_rate)
{
debug("set_pwm_rate %x %u %u", rate_map, default_rate, alt_rate);
for (unsigned pass = 0; pass < 2; pass++) {
for (unsigned group = 0; group < _max_actuators; group++) {
// get the channel mask for this rate group
uint32_t mask = up_pwm_servo_get_rate_group(group);
if (mask == 0)
continue;
// all channels in the group must be either default or alt-rate
uint32_t alt = rate_map & mask;
if (pass == 0) {
// preflight
if ((alt != 0) && (alt != mask)) {
warn("rate group %u mask %x bad overlap %x", group, mask, alt);
// not a legal map, bail
return -EINVAL;
}
} else {
// set it - errors here are unexpected
if (alt != 0) {
if (up_pwm_servo_set_rate_group_update(group, _pwm_alt_rate) != OK) {
warn("rate group set alt failed");
return -EINVAL;
}
} else {
if (up_pwm_servo_set_rate_group_update(group, _pwm_default_rate) != OK) {
warn("rate group set default failed");
return -EINVAL;
}
}
}
}
}
_pwm_alt_rate_channels = rate_map;
_pwm_default_rate = default_rate;
_pwm_alt_rate = alt_rate;
return OK;
}
int
up_pwm_servo_set_rate(unsigned rate)
{
for (unsigned i = 0; i < PWM_SERVO_MAX_TIMERS; i++)
up_pwm_servo_set_rate_group_update(i, rate);
return 0;
}
int up_pwm_servo_set_rate(unsigned rate)
{
for (unsigned i = 0; i < MAX_IO_TIMERS; i++) {
up_pwm_servo_set_rate_group_update(i, rate);
}
return 0;
}
/*
* Helper function to handle changes to the PWM rate control registers.
*/
static void
pwm_configure_rates(uint16_t map, uint16_t defaultrate, uint16_t altrate)
{
for (unsigned pass = 0; pass < 2; pass++) {
for (unsigned group = 0; group < PX4IO_SERVO_COUNT; group++) {
/* get the channel mask for this rate group */
uint32_t mask = up_pwm_servo_get_rate_group(group);
if (mask == 0) {
continue;
}
/* all channels in the group must be either default or alt-rate */
uint32_t alt = map & mask;
if (pass == 0) {
/* preflight */
if ((alt != 0) && (alt != mask)) {
/* not a legal map, bail with an alarm */
r_status_alarms |= PX4IO_P_STATUS_ALARMS_PWM_ERROR;
return;
}
} else {
/* set it - errors here are unexpected */
if (alt != 0) {
if (up_pwm_servo_set_rate_group_update(group, r_setup_pwm_altrate) != OK) {
r_status_alarms |= PX4IO_P_STATUS_ALARMS_PWM_ERROR;
}
} else {
if (up_pwm_servo_set_rate_group_update(group, r_setup_pwm_defaultrate) != OK) {
r_status_alarms |= PX4IO_P_STATUS_ALARMS_PWM_ERROR;
}
}
}
}
}
r_setup_pwm_rates = map;
r_setup_pwm_defaultrate = defaultrate;
r_setup_pwm_altrate = altrate;
}
