Future Electronics
/
lorawan-neoiso-lab
Lab exercise code for FAE Summit 09/2019.
main.cpp
- Committer:
- lru
- Date:
- 2019-09-18
- Revision:
- 59:4628ef4b0d52
- Parent:
- 58:cf54c181a632
File content as of revision 59:4628ef4b0d52:
/** * 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" #include "psoc6_utils.h" #include "mbed.h" // Application helpers #include "trace_helper.h" #include "lora_radio_helper.h" #include "neo_iso_drv.h" using namespace events; using namespace mbed; // 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]; /* * 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 /** * Dummy pin for dummy sensor */ #define PC_9 0 /** * 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; /** * Button switch processing handler. */ static void button_handler(void); Timer g_timer; DigitalOut led(LED1); DigitalIn button1(BUTTON1); bool frame_send = false; bool is_connected = false; neoiso::NeoIso ssr(I2C_SCL, I2C_SDA, 0); static const uint8_t target_device_eui[] = MBED_CONF_APP_TARGET_DEVICE_EUI; //static const uint8_t target_device_eui[] = { 0x00, 0xa0, 0x50, 0xff, 0xfe, 0x81, 0x27, 0x95 }; /** * Entry point for application */ int main(void) { static uint8_t mac_address[6]; static uint8_t device_eui[8] = {0x00, 0x00, 0x00, 0xff, 0xfe, 0x00, 0x00, 0x00}; static const uint8_t application_eui[] = MBED_CONF_LORA_APPLICATION_EUI; static const uint8_t application_key[] = MBED_CONF_LORA_APPLICATION_KEY; static lorawan_connect_t connect_params = { .connect_type = LORAWAN_CONNECTION_OTAA, }; // setup tracing setup_trace(); // stores the status of a call to LoRaWAN protocol lorawan_status_t retcode; // Create unique, hardware-dependent EUI. cy_get_bd_mac_address(mac_address); // MAC address is in reverse sequence. for (int i = 0; i < 3; ++i) { device_eui[i] = mac_address[5 - i]; device_eui[i + 5] = mac_address[2 - i]; } printf("\r\nDevice EUI is %02X", device_eui[0]); for (int i = 1; i < 8; ++i) { printf(":%02X", device_eui[i]); } printf("\r\n"); // 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"); // Specify class C if (lorawan.set_device_class(CLASS_C) != LORAWAN_STATUS_OK) { printf("\r\n setting class C failed! \r\n"); return -1; } printf("\r\n Class C - Enabled \r\n"); connect_params.connection_u.otaa.dev_eui = device_eui; connect_params.connection_u.otaa.app_eui = const_cast<uint8_t *>(application_eui); connect_params.connection_u.otaa.app_key = const_cast<uint8_t *>(application_key); connect_params.connection_u.otaa.nb_trials = MBED_CONF_LORA_NB_TRIALS; g_timer.start(); retcode = lorawan.connect(connect_params); 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"); // Start button handler; will check button switch every 100ms. ev_queue.call_every(100, button_handler); // make your event queue dispatching events forever ev_queue.dispatch_forever(); return 0; } /** * Sends a message to the Network Server */ static void send_message(int pwon) { uint16_t packet_len; int16_t retcode; printf("\r\n[%8u] Sending message (%d) \r\n", g_timer.read_ms(), pwon); memcpy(tx_buffer, target_device_eui, 8); tx_buffer[8] = pwon? 0x09 : 0x00; packet_len = 9; led = 1; 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); if (retcode == LORAWAN_STATUS_WOULD_BLOCK) { lorawan.cancel_sending(); led = 0; //retry in 3 seconds if (MBED_CONF_LORA_DUTY_CYCLE_ON) { ev_queue.call_in(3000, send_message, pwon); } } return; } frame_send = true; printf("\r\n[%8u] %d bytes scheduled for transmission \r\n", g_timer.read_ms(), retcode); memset(tx_buffer, 0, sizeof(tx_buffer)); } /** * Receive a message from the Network Server */ static void receive_message() { uint8_t port; int flags; int16_t retcode = lorawan.receive(rx_buffer, sizeof(rx_buffer), port, flags); if (retcode < 0) { printf("\r\n receive() - Error code %d \r\n", retcode); return; } printf("[%8u] RX Data on port %u (%d bytes): ", g_timer.read_ms(), port, retcode); for (uint8_t i = 0; i < retcode; i++) { printf("%02x ", rx_buffer[i]); } printf("\r\n"); if (rx_buffer[0] == 0) { ssr = 0; } else { ssr = 1; } memset(rx_buffer, 0, sizeof(rx_buffer)); } /** * Detects and processes button events. */ static void button_handler(void) { static uint8_t prev_state = 1; static uint8_t stable_state = 1; static uint8_t power_on = 0; static uint8_t count = 2; uint8_t curr_state = button1; if (curr_state != prev_state) { count = 2; } else { if (count > 0) { --count; } else { if ((stable_state == 0) && (curr_state != 0)) { // we react on release of the button if (is_connected) { power_on = power_on? 0 : 1; send_message(power_on); } } stable_state = curr_state; } } prev_state = curr_state; } /** * Event handler */ static void lora_event_handler(lorawan_event_t event) { switch (event) { case CONNECTED: printf("\r\n[%8u] Connection - Successful \r\n", g_timer.read_ms()); is_connected = true; break; case DISCONNECTED: led = 0; frame_send = false; ev_queue.break_dispatch(); printf("\r\n[%8u] Disconnected Successfully \r\n", g_timer.read_ms()); break; case TX_DONE: led = 0; if (frame_send) { frame_send = false; printf("\r\n[%8u] Message Sent to Network Server \r\n", g_timer.read_ms()); } else { printf("\r\n[%8u] Duplicate TX_DONE !!! \r\n", g_timer.read_ms()); } break; case TX_TIMEOUT: case TX_ERROR: case TX_CRYPTO_ERROR: case TX_SCHEDULING_ERROR: led = 0; frame_send = false; printf("\r\n[%8u] Transmission Error - EventCode = %d \r\n", g_timer.read_ms(), event); break; case RX_DONE: printf("\r\n[%8u] Received message from Network Server \r\n", g_timer.read_ms()); receive_message(); break; case RX_TIMEOUT: case RX_ERROR: printf("\r\n[%8u] Error in reception - Code = %d \r\n", g_timer.read_ms(), event); break; case JOIN_FAILURE: printf("\r\n OTAA Failed - Check Keys \r\n"); break; case UPLINK_REQUIRED: printf("\r\n[%8u] Uplink required by NS \r\n", g_timer.read_ms()); break; default: MBED_ASSERT("Unknown Event"); } } // EOF