7360.blinky_pwm.zip
I want to use ppi to drive PWM. Attachment is my code files, it can't work.
How should I configure it.
Hi!
Could you explain a bit about what you are you trying to develop and solve?
You could perhaps just use this sample here? https://github.com/nrfconnect/sdk-zephyr/blob/main/samples/drivers/led_pwm/src/main.c
Thank you!
I want to use PWM PPI mode to send data to an external radio chip.
Now, I can't trigger PPI task by an IN-event.
bool pwm_play_ppi_task_event_init(pwm_play_t *pp) { #if defined(__ZEPHYR__) //Has IRQ_CONNECT or IRQ_DIRECT_CONNECT accidentally been invoked on the same irq multiple times? // IRQ_CONNECT(NRFX_IRQ_NUMBER_GET(NRF_GPIOTE_INST_GET(0)), IRQ_PRIO_LOWEST, // NRFX_GPIOTE_INST_HANDLER_GET(0), 0, 0); #endif nrfx_err_t err; if(NULL == pp)return false; nrfx_gpiote_trigger_config_t trigger_config = { .trigger = pp->trigger, .p_in_channel = &pp->gpiote_channel, }; nrfx_gpiote_input_pin_config_t input_pin_config = { .p_trigger_config = &trigger_config, .p_pull_config = &pp->pin_pull, .p_handler_config = &pp->gpiote_handler, }; err = nrfx_gpiote_init(&pp->gpiote, NRFX_GPIOTE_DEFAULT_CONFIG_IRQ_PRIORITY); if (err != NRFX_SUCCESS && err != NRFX_ERROR_ALREADY) { LOG_ERR("gpiote_init failed with: %x\n", err); return false; } err = nrfx_gpiote_channel_alloc(&pp->gpiote, &pp->gpiote_channel); if (err != NRFX_SUCCESS) { LOG_ERR("gpiote_channel_alloc failed with: %x\n", err); return false; } err = nrfx_gpiote_input_configure(&pp->gpiote, pp->pin, &input_pin_config); if (err != NRFX_SUCCESS) { LOG_ERR("gpiote_input_configure failed with: %x\n", err); return false; } nrfx_gpiote_trigger_enable(&pp->gpiote, pp->pin, true); err = nrfx_gppi_channel_alloc(&pp->gppi_channel); if (err != NRFX_SUCCESS) { LOG_ERR("gppi_channel_alloc failed with: %x\n", err); return false; } nrfx_gppi_channel_endpoints_setup(pp->gppi_channel, nrfx_gpiote_in_event_address_get(&pp->gpiote, pp->pin), pp->task_addres); LOG_INF("gppi_channel %u, gpiote_channel %u, task_addres %u", pp->gppi_channel, pp->gpiote_channel, pp->task_addres); return true; }
These code can work.
