The following example will generate 100us
pulses every 10ms
. The pulses are generated using the RMT peripheral.
#include <Arduino.h> #include <esp_log.h> #include <driver/rmt.h> // Output pulse train on D14 constexpr gpio_num_t rmtPin = GPIO_NUM_14; constexpr rmt_channel_t RMT_TX_CHANNEL = RMT_CHANNEL_0; static const rmt_item32_t pulseRMT[] = { {{{ /*pulse duration=*/100, /*pulse level*/1, // After pulse, output 0 0, 0 }}}, }; void setup() { Serial.begin(115200); rmt_config_t config = RMT_DEFAULT_CONFIG_TX(rmtPin, RMT_TX_CHANNEL); config.clk_div = 80; // input clock 80 MHz => output clk 1 MHz ESP_ERROR_CHECK(rmt_config(&config)); ESP_ERROR_CHECK(rmt_driver_install(config.channel, 0, 0)); } void loop() { ESP_ERROR_CHECK(rmt_write_items(RMT_TX_CHANNEL, pulseRMT, sizeof(pulseRMT) / sizeof(rmt_item32_t), true)); delay(10); }
[env:esp32dev] platform = espressif32 board = esp32dev framework = arduino monitor_speed = 115200