mirror of
https://github.com/manuelbl/ttn-esp32.git
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96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
/*******************************************************************************
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* Copyright (c) 2018 Manuel Bleichenbacher
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*
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Sample program showing how to send and receive messages.
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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 = "????????????????";;
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// Copy the below two lines from bottom of the same page
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const char *appEui = "????????????????";
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const char *appKey = "????????????????????????????????";
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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.transmitBytes(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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void messageReceived(const uint8_t* message, size_t length, port_t port)
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{
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printf("Message of %d bytes received on port %d:", length, port);
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for (int i = 0; i < length; i++)
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printf(" %02x", message[i]);
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printf("\n");
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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 = 19;
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spi_bus_config.mosi_io_num = 27;
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spi_bus_config.sclk_io_num = 5;
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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(HSPI_HOST, &spi_bus_config, 1);
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ESP_ERROR_CHECK(err);
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ttn.configurePins(HSPI_HOST, 18, TTN_NOT_CONNECTED, 14, 26, 33);
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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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ttn.onMessage(messageReceived);
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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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