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feat(dmx): implement DMX initialization and sending functionality

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This commit is contained in:
RaffaelW 2026-03-15 19:51:59 +01:00
parent a2d51540b7
commit 5370e48d07
6 changed files with 91 additions and 2 deletions
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43
components/dmx/src/dmx.c
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#define LOG_TAG "DMX"
#include <stdint.h>
#include "dmx.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "logger.h"
static void dmx_sender_task(void *pv_parameters) {
dmx_port_t port = (dmx_port_t)(intptr_t)pv_parameters;
TickType_t last_wake_time = xTaskGetTickCount();
while (1) {
send_dmx(port);
vTaskDelayUntil(&last_wake_time, pdMS_TO_TICKS(1000));
}
}
void init_dmx(dmx_port_t port, int pin_tx, int pin_rx) {
LOGI("Initializing DMX port %d on pin %d (TX) and %d (RX)", port, pin_tx,
pin_rx);
dmx_config_t config = DMX_CONFIG_DEFAULT;
dmx_personality_t personalities[] = {};
dmx_driver_install(port, &config, personalities, 0);
dmx_set_pin(port, pin_tx, pin_rx, DMX_PIN_NO_CHANGE); // RTS pin is not used
BaseType_t task_created = xTaskCreate(dmx_sender_task, "dmx_sender", 2048,
(void *)(intptr_t)port, 5, NULL);
if (task_created != pdPASS) {
LOGE("Failed to create DMX sender task for port %d", port);
}
}
void send_dmx(dmx_port_t port) {
LOGD("Sending DMX data on port %d", port);
uint8_t dmx_data[DMX_PACKET_SIZE] = {DMX_SC, 0, 0, 0, 255, 100, 0, 100, 0};
dmx_write(port, dmx_data, DMX_PACKET_SIZE);
dmx_send(port);
}