esp32-idf sx126x-cad代码

以下是 ESP32 IDF 与 SX126x 通信模块的 CAD 示例代码。请注意，这只是示例代码，您需要根据您的具体应用进行修改和优化。

#include "driver/spi_master.h"
#include "sx126x.h"

#define NSS_PIN   5
#define BUSY_PIN  4
#define DIO1_PIN  2

spi_device_handle_t spi;
sx126x_t sx126x;

void sx126x_cad_detected(sx126x_t *dev) {
  printf("CAD detected\n");
  // Do something when CAD is detected
}

void app_main() {
  // Initialize SPI bus
  spi_bus_config_t bus_cfg = {
    .miso_io_num = -1,
    .mosi_io_num = 23,
    .sclk_io_num = 18,
    .quadwp_io_num = -1,
    .quadhd_io_num = -1,
    .max_transfer_sz = 0
  };
  ESP_ERROR_CHECK(spi_bus_initialize(HSPI_HOST, &bus_cfg, 1));
  
  // Configure SPI device
  spi_device_interface_config_t dev_cfg = {
    .clock_speed_hz = 5000000,
    .mode = 0,
    .spics_io_num = NSS_PIN,
    .queue_size = 1
  };
  ESP_ERROR_CHECK(spi_bus_add_device(HSPI_HOST, &dev_cfg, &spi));
  
  // Initialize SX126x driver
  sx126x.spi = spi;
  sx126x.nss_pin = NSS_PIN;
  sx126x.busy_pin = BUSY_PIN;
  sx126x.dio1_pin = DIO1_PIN;
  sx126x.cad_detected = sx126x_cad_detected;
  ESP_ERROR_CHECK(sx126x_init(&sx126x));
  
  // Set LoRa parameters
  sx126x_set_regulator_mode(&sx126x, SX126X_REGULATOR_DCDC);
  sx126x_set_buffer_base_address(&sx126x, 0x00, 0x00);
  sx126x_set_lora_symb_num_timeout(&sx126x, 0x3FF);
  sx126x_set_lora_coding_rate(&sx126x, 4);
  sx126x_set_lora_bandwidth(&sx126x, 1);
  sx126x_set_lora_spreading_factor(&sx126x, 7);
  sx126x_set_tx_params(&sx126x, 22, RADIO_RAMP_10_US);
  
  // Set CAD parameters
  sx126x_set_cad_params(&sx126x, 0x00, 0x00);
  
  printf("Ready\n");
  
  while(1) {
    sx126x_process_irq(&sx126x);
    vTaskDelay(100 / portTICK_RATE_MS);
  }
}