RE: change duty cycle seperatly and independently on each channel

ziv123 — Tue, 26 May 2020 06:50:00 GMT

SOLVED

the problem was with the " .load_mode = NRF_PWM_LOAD_COMMON " in the "nrf_drv_pwm_config_t" struct

instead of ".load_mode = NRF_PWM_LOAD_INDIVIDUAL,"

this way the values put to each channel affect one channel only and not all 🙂

RE: change duty cycle seperatly and independently on each channel

ziv123 — Mon, 25 May 2020 14:50:33 GMT

well i have tried to use the sequence definition like that:

static nrf_pwm_values_individual_t /*const*/ pumps_motors_seq_values[] = { 0 };

nrf_pwm_sequence_t const seq0 =
{
.values.p_individual = pumps_motors_seq_values, //seq0_values,
.length = 1,//NRF_PWM_VALUES_LENGTH(seq0_values),
.repeats = 1,
.end_delay = 0
};

and activate each channel like that:

pumps_motors_seq_values->channel_0 = speed | 0x8000;
nrf_drv_pwm_simple_playback(&pump_motors_pwm_speed, &seq0, 1, NRF_DRV_PWM_FLAG_LOOP);

pumps_motors_seq_values->channel_1 = speed | 0x8000;
nrf_drv_pwm_simple_playback(&pump_motors_pwm_speed, &seq0, 1, NRF_DRV_PWM_FLAG_LOOP);

but when i activate channel_0 it activats all motors and also channel_1 does not activate anything at all

what can be the cause of that? what am i doing wrong?