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Dependencies: Servo Cayenne-LPP driver_mbed_TH02
Diff: main.cpp
- Revision:
- 0:7037ed05f54f
- Child:
- 2:dc95ac6d6d4e
diff -r 000000000000 -r 7037ed05f54f main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Mar 08 17:46:15 2018 +0000 @@ -0,0 +1,258 @@ +/** + * 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 "lorawan/LoRaWANInterface.h" +#include "lorawan/system/lorawan_data_structures.h" +#include "events/EventQueue.h" + +// Application helpers +#include "DummySensor.h" +#include "trace_helper.h" +#include "lora_radio_helper.h" + +using namespace events; + +uint8_t tx_buffer[LORAMAC_PHY_MAXPAYLOAD]; +uint8_t rx_buffer[LORAMAC_PHY_MAXPAYLOAD]; + +/* + * 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. + * 16 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 16 + +/** + * Maximum number of retries for CONFIRMED messages before giving up + */ +#define CONFIRMED_MSG_RETRY_COUNTER 3 + +/** + * Dummy pin for dummy sensor + */ +#define PC_9 0 + +/** + * Dummy sensor class object + */ +DS1820 ds1820(PC_9); + +/** +* 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); + +/** + * Pointer to LoRaWAN interface + */ +static LoRaWANInterface* lorawan = NULL; + +/** + * Application specific callbacks + */ +static lorawan_app_callbacks_t callbacks; + +/** + * Entry point for application + */ +int main (void) +{ + // Constructing Mbed LoRaWANInterface and passing it down the radio object. + LoRaWANInterface lora(get_lora_radio()); + lorawan = &lora; + + // 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) { + printf("\r\n LoRa initialization failed! \r\n"); + return -1; + } + + 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) { + printf("\r\n set_confirmed_msg_retries failed! \r\n\r\n"); + return -1; + } + + 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) { + printf("\r\n enable_adaptive_datarate failed! \r\n"); + return -1; + } + + 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 { + printf("\r\n Connection error, code = %d \r\n", retcode); + return -1; + } + + printf("\r\n Connection - In Progress ...\r\n"); + + // make your event queue dispatching events forever + ev_queue.dispatch_forever(); +} + +/** + * Sends a message to the Network Server + */ +static void send_message() +{ + uint16_t packet_len; + int16_t retcode; + float sensor_value; + + if (ds1820.begin()) { + ds1820.startConversion(); + sensor_value = ds1820.read(); + printf("\r\n Dummy Sensor Value = %3.1f \r\n", sensor_value); + ds1820.startConversion(); + } else { + printf("\r\n No sensor found \r\n"); + return; + } + + packet_len = sprintf((char*) tx_buffer, "Dummy Sensor Value is %3.1f", + sensor_value); + + retcode = lorawan->send(MBED_CONF_LORA_APP_PORT, tx_buffer, packet_len, + MSG_CONFIRMED_FLAG); + + if (retcode < 0) { + retcode == LORAWAN_STATUS_WOULD_BLOCK ? printf("send - WOULD BLOCK\r\n") + : printf("\r\n send() - Error code %d \r\n", retcode); + return; + } + + printf("\r\n %d bytes scheduled for transmission \r\n", retcode); + memset(tx_buffer, 0, LORAMAC_PHY_MAXPAYLOAD); +} + +/** + * Receive a message from the Network Server + */ +static void receive_message() +{ + int16_t retcode; + retcode = lorawan->receive(MBED_CONF_LORA_APP_PORT, rx_buffer, + LORAMAC_PHY_MAXPAYLOAD, + MSG_CONFIRMED_FLAG|MSG_UNCONFIRMED_FLAG); + + if (retcode < 0) { + printf("\r\n receive() - Error code %d \r\n", retcode); + return; + } + + printf(" Data:"); + + for (uint8_t i = 0; i < retcode; i++) { + printf("%x", rx_buffer[i]); + } + + printf("\r\n Data Length: %d\r\n", retcode); + + memset(rx_buffer, 0, LORAMAC_PHY_MAXPAYLOAD); +} + +/** + * Event handler + */ +static void lora_event_handler(lorawan_event_t event) +{ + switch (event) { + case CONNECTED: + 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(); + printf("\r\n Disconnected Successfully \r\n"); + break; + case TX_DONE: + 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: + 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: + printf("\r\n Received message from Network Server \r\n"); + receive_message(); + break; + case RX_TIMEOUT: + case RX_ERROR: + printf("\r\n Error in reception - Code = %d \r\n", event); + break; + case JOIN_FAILURE: + printf("\r\n OTAA Failed - Check Keys \r\n"); + break; + default: + MBED_ASSERT("Unknown Event"); + } +} + +// EOF