Blues.io

examples/RAK4630/solutions/Blues-Hummingbird-Gateway/Arduino/Blues-Hummingbird-Gateway/Blues-Hummingbird-Gateway.ino

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+/**
+ * @file main.cpp
+ * @author Bernd Giesecke ([email protected])
+ * @brief App event handlers
+ * @version 0.1
+ * @date 2023-04-25
+ *
+ * @copyright Copyright (c) 2023
+ *
+ */
+
+#include "main.h"
+
+/** LoRaWAN packet */
+WisCayenne g_solution_data(255);
+
+/** Received package for parsing */
+uint8_t rcvd_data[256];
+/** Length of received package */
+uint16_t rcvd_data_len = 0;
+
+/** Send Fail counter **/
+uint8_t send_fail = 0;
+
+/** Set the device name, max length is 10 characters */
+char g_ble_dev_name[10] = "RAK";
+
+/** Flag for RAK1906 sensor */
+bool has_rak1906 = false;
+
+/** Flag is Blues Notecard was found */
+bool has_blues = false;
+
+/**
+ * @brief Initial setup of the application (before LoRaWAN and BLE setup)
+ *
+ */
+void setup_app(void)
+{
+	Serial.begin(115200);
+	time_t serial_timeout = millis();
+	// On nRF52840 the USB serial is not available immediately
+	while (!Serial)
+	{
+		if ((millis() - serial_timeout) < 5000)
+		{
+			delay(100);
+			digitalWrite(LED_GREEN, !digitalRead(LED_GREEN));
+		}
+		else
+		{
+			break;
+		}
+	}
+	digitalWrite(LED_GREEN, LOW);
+
+	// Set firmware version
+	api_set_version(SW_VERSION_1, SW_VERSION_2, SW_VERSION_3);
+}
+
+/**
+ * @brief Final setup of application  (after LoRaWAN and BLE setup)
+ *
+ * @return true
+ * @return false
+ */
+bool init_app(void)
+{
+	Serial.printf("init_app\n");
+
+	Serial.printf("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
+	Serial.printf("WisBlock Hummingbird Blues Sensor\n");
+	Serial.printf("++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n");
+
+	// Initialize User AT commands
+	init_user_at();
+
+	// Check if RAK1906 is available
+	has_rak1906 = init_rak1906();
+	if (has_rak1906)
+	{
+		Serial.printf("+EVT:RAK1906\n");
+	}
+
+	// Initialize Blues Notecard
+	has_blues = init_blues();
+	if (!has_blues)
+	{
+		Serial.printf("+EVT:CELLULAR_ERROR\n");
+	}
+	else
+	{
+		Serial.printf("+EVT:RAK13102\n");
+		Serial.printf("Start P2P RX\n");
+		// Set to permanent listen
+		g_lora_p2p_rx_mode = RX_MODE_RX;
+		Radio.Rx(0);
+	}
+
+	pinMode(WB_IO2, OUTPUT);
+	digitalWrite(WB_IO2, LOW);
+	return true;
+}
+
+/**
+ * @brief Handle events
+ * 		Events can be
+ * 		- timer (setup with AT+SENDINT=xxx)
+ * 		- interrupt events
+ * 		- wake-up signals from other tasks
+ */
+void app_event_handler(void)
+{
+	// Timer triggered event
+	if ((g_task_event_type & STATUS) == STATUS)
+	{
+		g_task_event_type &= N_STATUS;
+		Serial.printf("Timer wakeup\n");
+		if (g_lpwan_has_joined)
+		{
+			// Reset the packet
+			g_solution_data.reset();
+
+			// Get battery level
+			float batt_level_f = read_batt();
+			g_solution_data.addVoltage(LPP_CHANNEL_BATT, batt_level_f / 1000.0);
+
+			// Read sensors and battery
+			if (has_rak1906)
+			{
+				read_rak1906();
+			}
+
+			if (!has_blues)
+			{
+				if (g_lorawan_settings.lorawan_enable)
+				{
+					lmh_error_status result = send_lora_packet(g_solution_data.getBuffer(), g_solution_data.getSize());
+					switch (result)
+					{
+					case LMH_SUCCESS:
+						Serial.printf("Packet enqueued\n");
+						break;
+					case LMH_BUSY:
+						Serial.printf("LoRa transceiver is busy\n");
+						Serial.printf("+EVT:BUSY\n\n");
+						break;
+					case LMH_ERROR:
+						Serial.printf("+EVT:SIZE_ERROR\n\n");
+						Serial.printf("Packet error, too big to send with current DR\n");
+						break;
+					}
+				}
+				else
+				{
+					// Add unique identifier in front of the P2P packet, here we use the DevEUI
+					g_solution_data.addDevID(LPP_CHANNEL_DEVID, &g_lorawan_settings.node_device_eui[4]);
+					// uint8_t packet_buffer[g_solution_data.getSize() + 8];
+					// memcpy(packet_buffer, g_lorawan_settings.node_device_eui, 8);
+					// memcpy(&packet_buffer[8], g_solution_data.getBuffer(), g_solution_data.getSize());
+
+					// Send packet over LoRa
+					// if (send_p2p_packet(packet_buffer, g_solution_data.getSize() + 8))
+					if (send_p2p_packet(g_solution_data.getBuffer(), g_solution_data.getSize()))
+					{
+						Serial.printf("Packet enqueued\n");
+					}
+					else
+					{
+						Serial.printf("+EVT:SIZE_ERROR\n");
+						Serial.printf("Packet too big\n");
+					}
+				}
+			}
+			else
+			{
+				Serial.printf("Get hub sync status:\n");
+				blues_hub_status();
+
+				g_solution_data.addDevID(0, &g_lorawan_settings.node_device_eui[4]);
+				blues_parse_send(g_solution_data.getBuffer(), g_solution_data.getSize());
+			}
+			// Reset the packet
+			g_solution_data.reset();
+		}
+		else
+		{
+			Serial.printf("Network not joined, skip sending\n");
+		}
+	}
+
+	// Parse request event
+	if ((g_task_event_type & PARSE) == PARSE)
+	{
+		g_task_event_type &= N_PARSE;
+
+		if (has_blues)
+		{
+			if (!blues_parse_send(rcvd_data, rcvd_data_len))
+			{
+				Serial.printf("Parsing or sending failed\n");
+
+				Serial.printf("**********************************************\n");
+				Serial.printf("Get hub sync status:\n");
+				// {“req”:”hub.sync.status”}
+				blues_start_req("hub.sync.status\n");
+				blues_send_req();
+
+				Serial.printf("**********************************************\n");
+				delay(2000);
+
+				Serial.printf("Get note card status:\n");
+				// {“req”:”card.wireless”}
+				blues_start_req("card.wireless\n");
+				blues_send_req();
+
+				Serial.printf("**********************************************\n");
+				delay(2000);
+			}
+		}
+		else
+		{
+			Serial.printf("Got PARSE request, but no Blues Notecard detected\n");
+		}
+	}
+}
+
+/**
+ * @brief Handle BLE events
+ *
+ */
+void ble_data_handler(void)
+{
+	if (g_enable_ble)
+	{
+		if ((g_task_event_type & BLE_DATA) == BLE_DATA)
+		{
+			Serial.printf("RECEIVED BLE\n");
+			// BLE UART data arrived
+			g_task_event_type &= N_BLE_DATA;
+
+			while (g_ble_uart.available() > 0)
+			{
+				at_serial_input(uint8_t(g_ble_uart.read()));
+				delay(5);
+			}
+			at_serial_input(uint8_t('\n'));
+		}
+	}
+}
+
+/**
+ * @brief Handle LoRa events
+ *
+ */
+void lora_data_handler(void)
+{
+	// LoRa Join finished handling
+	if ((g_task_event_type & LORA_JOIN_FIN) == LORA_JOIN_FIN)
+	{
+		g_task_event_type &= N_LORA_JOIN_FIN;
+		if (g_join_result)
+		{
+			Serial.printf("Successfully joined network\n");
+		}
+		else
+		{
+			Serial.printf("Join network failed\n");
+			/// \todo here join could be restarted.
+			// lmh_join();
+		}
+	}
+
+	// LoRa data handling
+	if ((g_task_event_type & LORA_DATA) == LORA_DATA)
+	{
+		g_task_event_type &= N_LORA_DATA;
+		Serial.printf("Received package over LoRa\n");
+		char log_buff[g_rx_data_len * 3] = {0};
+		uint8_t log_idx = 0;
+		for (int idx = 0; idx < g_rx_data_len; idx++)
+		{
+			sprintf(&log_buff[log_idx], "%02X ", g_rx_lora_data[idx]);
+			log_idx += 3;
+		}
+		Serial.printf("%s", log_buff);
+
+#if MY_DEBUG > 0
+		CayenneLPP lpp(g_rx_data_len - 8);
+		memcpy(lpp.getBuffer(), &g_rx_lora_data[8], g_rx_data_len - 8);
+		DynamicJsonDocument jsonBuffer(4096);
+		JsonObject root = jsonBuffer.to<JsonObject>();
+		lpp.decodeTTN(lpp.getBuffer(), g_rx_data_len - 8, root);
+		serializeJsonPretty(root, Serial);
+		Serial.println();
+#endif
+		memcpy(rcvd_data, g_rx_lora_data, g_rx_data_len);
+		rcvd_data_len = g_rx_data_len;
+		api_wake_loop(PARSE);
+	}
+
+	// LoRa TX finished handling
+	if ((g_task_event_type & LORA_TX_FIN) == LORA_TX_FIN)
+	{
+		g_task_event_type &= N_LORA_TX_FIN;
+
+		Serial.printf("LPWAN TX cycle %s", g_rx_fin_result ? "finished ACK" : "failed NAK\n");
+
+		if (!g_rx_fin_result)
+		{
+			// Increase fail send counter
+			send_fail++;
+
+			if (send_fail == 10)
+			{
+				// Too many failed sendings, reset node and try to rejoin
+				delay(100);
+				api_reset();
+			}
+		}
+	}
+}