mirror of
https://github.com/manuelbl/ttn-esp32.git
synced 2025-06-14 20:14:27 +02:00
99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
/*******************************************************************************
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*
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* ttn-esp32 - The Things Network device library for ESP-IDF / SX127x
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*
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* Copyright (c) 2018 Manuel Bleichenbacher
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*
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* Licensed under MIT License
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* https://opensource.org/licenses/MIT
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*
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* Sample program showing how to send a test message every 30 second.
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*******************************************************************************/
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#include "freertos/FreeRTOS.h"
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#include "esp_event.h"
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#include "nvs_flash.h"
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#include "TheThingsNetwork.h"
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// NOTE:
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// The LoRaWAN frequency and the radio chip must be configured by running 'make menuconfig'.
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// Go to Components / The Things Network, select the appropriate values and save.
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// Copy the below hex string from the "Device EUI" field
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// on your device's overview page in the TTN console.
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const char *devEui = "48AC328FF03E9294";
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// Copy the below two lines from bottom of the same page
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const char *appEui = "70B3D57ED000C6CD";
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const char *appKey = "C1ADB6821EF7E906BC51D981DF07CCC4";
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// Pins and other resources
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#define TTN_SPI_HOST HSPI_HOST
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#define TTN_SPI_DMA_CHAN 1
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#define TTN_PIN_SPI_SCLK 5
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#define TTN_PIN_SPI_MOSI 27
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#define TTN_PIN_SPI_MISO 19
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#define TTN_PIN_NSS 18
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#define TTN_PIN_RXTX TTN_NOT_CONNECTED
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#define TTN_PIN_RST TTN_NOT_CONNECTED
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#define TTN_PIN_DIO0 26
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#define TTN_PIN_DIO1 33
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static TheThingsNetwork ttn;
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const unsigned TX_INTERVAL = 30;
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static uint8_t msgData[] = "Hello, world";
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void sendMessages(void* pvParameter)
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{
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while (1) {
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printf("Sending message...\n");
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TTNResponseCode res = ttn.transmitMessage(msgData, sizeof(msgData) - 1);
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printf(res == kTTNSuccessfulTransmission ? "Message sent.\n" : "Transmission failed.\n");
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vTaskDelay(TX_INTERVAL * 1000 / portTICK_PERIOD_MS);
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}
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}
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extern "C" void app_main(void)
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{
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esp_err_t err;
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// Initialize the GPIO ISR handler service
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err = gpio_install_isr_service(ESP_INTR_FLAG_IRAM);
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ESP_ERROR_CHECK(err);
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// Initialize the NVS (non-volatile storage) for saving and restoring the keys
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err = nvs_flash_init();
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ESP_ERROR_CHECK(err);
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// Initialize SPI bus
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spi_bus_config_t spi_bus_config;
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spi_bus_config.miso_io_num = TTN_PIN_SPI_MISO;
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spi_bus_config.mosi_io_num = TTN_PIN_SPI_MOSI;
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spi_bus_config.sclk_io_num = TTN_PIN_SPI_SCLK;
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spi_bus_config.quadwp_io_num = -1;
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spi_bus_config.quadhd_io_num = -1;
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spi_bus_config.max_transfer_sz = 0;
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err = spi_bus_initialize(TTN_SPI_HOST, &spi_bus_config, TTN_SPI_DMA_CHAN);
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ESP_ERROR_CHECK(err);
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// Configure the SX127x pins
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ttn.configurePins(TTN_SPI_HOST, TTN_PIN_NSS, TTN_PIN_RXTX, TTN_PIN_RST, TTN_PIN_DIO0, TTN_PIN_DIO1);
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// The below line can be commented after the first run as the data is saved in NVS
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ttn.provision(devEui, appEui, appKey);
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printf("Joining...\n");
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if (ttn.join())
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{
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printf("Joined.\n");
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xTaskCreate(sendMessages, "send_messages", 1024 * 4, (void* )0, 3, NULL);
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}
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else
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{
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printf("Join failed. Goodbye\n");
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}
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}
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