frank dunn
/
example-ttn-workshop
acsip s76g
main.cpp
- Committer:
- frank_dunn1
- Date:
- 2020-07-08
- Revision:
- 53:a3344ee53c2c
- Parent:
- 52:922d8fdaae44
File content as of revision 53:a3344ee53c2c:
/** * Copyright (c) 2017, Arm Limited and affiliates. * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <stdio.h> #include "mbed.h" #include "lorawan/LoRaWANInterface.h" #include "lorawan/system/lorawan_data_structures.h" #include "events/EventQueue.h" #include "TinyGPSPlus.h" // Application helpers #include "trace_helper.h" #include "lora_radio_helper.h" using namespace events; // Max payload size can be LORAMAC_PHY_MAXPAYLOAD. // This example only communicates with much shorter messages (<30 bytes). // If longer messages are used, these buffers must be changed accordingly. uint8_t tx_buffer[30]; uint8_t rx_buffer[30]; char buf[128]; char c; /* * Sets up an application dependent transmission timer in ms. Used only when Duty Cycling is off for testing */ #define TX_TIMER 10000 /** * Maximum number of events for the event queue. * 10 is the safe number for the stack events, however, if application * also uses the queue for whatever purposes, this number should be increased. */ #define MAX_NUMBER_OF_EVENTS 10 /** * Maximum number of retries for CONFIRMED messages before giving up */ #define CONFIRMED_MSG_RETRY_COUNTER 3 #define DATABUFFER_SIZE 128 Serial gpsPort(PC_10,PC_11,115200); Serial pc(PA_9,PA_10); TinyGPSPlus gps; DigitalOut GPS_LEVEL_SHIFTER_EN(PC_6); DigitalOut GPS_RESET(PB_2); /** * This event queue is the global event queue for both the * application and stack. To conserve memory, the stack is designed to run * in the same thread as the application and the application is responsible for * providing an event queue to the stack that will be used for ISR deferment as * well as application information event queuing. */ static EventQueue ev_queue(MAX_NUMBER_OF_EVENTS *EVENTS_EVENT_SIZE); /** * Event handler. * * This will be passed to the LoRaWAN stack to queue events for the * application which in turn drive the application. */ static void lora_event_handler(lorawan_event_t event); /** * Constructing Mbed LoRaWANInterface and passing it the radio object from lora_radio_helper. */ static LoRaWANInterface lorawan(radio); /** * Application specific callbacks */ static lorawan_app_callbacks_t callbacks; void gpsSetup() { GPS_LEVEL_SHIFTER_EN=1; wait(0.2); GPS_RESET=0; wait(1); GPS_RESET=1; // wait(1); //gpsPort.printf("@GSR\r\n");//"@GNS 0x3\r\n" //wait(.25); //gpsPort.printf("@GNS 0x3\r\n"); //wait(.25); //gpsPort.printf("@BSSL 0x25\r\n"); //wait(.25); //gpsPort.printf("@GCD\r\n"); //wait(.25); } void getGpsData() { c= gpsPort.getc(); //pc.putc(c); switch (c) { case '\n': if (gps.satellites.isValid() && gps.satellites.value() > 3 && gps.hdop.hdop() > 0) { snprintf(buf, 128, "{\"lat\":%lf,\"lng\":%lf}", gps.location.lat(), gps.location.lng()); } else { snprintf(buf, 128, "Satellites: %lu, time: %04d-%02d-%02dT%02d:%02d:%02d.%02d", gps.satellites.value(), gps.date.year(), gps.date.month(), gps.date.day(), gps.time.hour(), gps.time.minute(), gps.time.second(), gps.time.centisecond()); } pc.printf("%s\r\n", buf); break; default: gps.encode(c); break; } ev_queue.call(getGpsData); } /** * Entry point for application */ int main(void) { //getGpsData(); gpsSetup(); pc.printf("hello"); // setup tracing setup_trace(); // stores the status of a call to LoRaWAN protocol lorawan_status_t retcode; // Initialize LoRaWAN stack if (lorawan.initialize(&ev_queue) != LORAWAN_STATUS_OK) { pc.printf("\r\n LoRa initialization failed! \r\n"); return -1; } pc.printf("\r\n Mbed LoRaWANStack initialized \r\n"); // prepare application callbacks callbacks.events = mbed::callback(lora_event_handler); lorawan.add_app_callbacks(&callbacks); // Set number of retries in case of CONFIRMED messages if (lorawan.set_confirmed_msg_retries(CONFIRMED_MSG_RETRY_COUNTER) != LORAWAN_STATUS_OK) { pc.printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n"); return -1; } pc.printf("\r\n CONFIRMED message retries : %d \r\n", CONFIRMED_MSG_RETRY_COUNTER); // Enable adaptive data rate if (lorawan.enable_adaptive_datarate() != LORAWAN_STATUS_OK) { pc.printf("\r\n enable_adaptive_datarate failed! \r\n"); return -1; } pc.printf("\r\n Adaptive data rate (ADR) - Enabled \r\n"); retcode = lorawan.connect(); if (retcode == LORAWAN_STATUS_OK || retcode == LORAWAN_STATUS_CONNECT_IN_PROGRESS) { } else { pc.printf("\r\n Connection error, code = %d \r\n", retcode); return -1; } pc.printf("\r\n Connection - In Progress ...\r\n"); ev_queue.call(getGpsData); // make your event queue dispatching events forever ev_queue.dispatch_forever(); return 0; } /** * Sends a message to the Network Server */ static void send_message() { uint16_t packet_len; int16_t retcode; pc.printf("\n\rHello world"); packet_len = sprintf((char *) tx_buffer, "Hello world"); retcode = lorawan.send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len, MSG_UNCONFIRMED_FLAG); if (retcode < 0) { retcode == LORAWAN_STATUS_WOULD_BLOCK ? pc.printf("send - WOULD BLOCK\r\n") : pc.printf("\r\n send() - Error code %d \r\n", retcode); if (retcode == LORAWAN_STATUS_WOULD_BLOCK) { //retry in 3 seconds if (MBED_CONF_LORA_DUTY_CYCLE_ON) { ev_queue.call_in(3000, send_message); } } return; } pc.printf("\r\n %d bytes scheduled for transmission \r\n", retcode); memset(tx_buffer, 0, sizeof(tx_buffer)); } /** * Event handler */ static void lora_event_handler(lorawan_event_t event) { switch (event) { case CONNECTED: pc.printf("\r\n Connection - Successful \r\n"); if (MBED_CONF_LORA_DUTY_CYCLE_ON) { send_message(); } else { ev_queue.call_every(TX_TIMER, send_message); } break; case DISCONNECTED: ev_queue.break_dispatch(); pc.printf("\r\n Disconnected Successfully \r\n"); break; case TX_DONE: pc.printf("\r\n Message Sent to Network Server \r\n"); if (MBED_CONF_LORA_DUTY_CYCLE_ON) { send_message(); } break; case TX_TIMEOUT: case TX_ERROR: case TX_CRYPTO_ERROR: case TX_SCHEDULING_ERROR: pc.printf("\r\n Transmission Error - EventCode = %d \r\n", event); // try again if (MBED_CONF_LORA_DUTY_CYCLE_ON) { send_message(); } break; case RX_DONE: pc.printf("\r\n Received message from Network Server \r\n"); break; case RX_TIMEOUT: case RX_ERROR: pc.printf("\r\n Error in reception - Code = %d \r\n", event); break; case JOIN_FAILURE: pc.printf("\r\n OTAA Failed - Check Keys \r\n"); break; case UPLINK_REQUIRED: pc.printf("\r\n Uplink required by NS \r\n"); if (MBED_CONF_LORA_DUTY_CYCLE_ON) { send_message(); } break; default: MBED_ASSERT("Unknown Event"); } } // EOF