An example project for the Heltec Turtle LoRa board (STM32L4 and SX1276 chips). The projects is only supported for the Nucleo-L432KC board platform in the mbed online and offline compiler environment. Visit www.radioshuttle.de (choose Turtle board) for instructions. Note that most source files and libraries are open source, however some files especially the RadioShuttle core protocol is copyrighted work. Check header for details.

Dependencies:   mbed BufferedSerial SX1276GenericLib OLED_SSD1306 HELIOS_Si7021 NVProperty RadioShuttle-STM32L4 USBDeviceHT

main.cpp

Committer:
Helmut64
Date:
2 months ago
Revision:
30:8bc655c9b224
Parent:
25:8578fed9087e
Child:
34:d3d60dbb84ea

File content as of revision 30:8bc655c9b224:

/*
 * Copyright (c) 2019 Helmut Tschemernjak
 * 30826 Garbsen (Hannover) Germany
 * Licensed under the Apache License, Version 2.0);
 */

 /*
  * TODO:
  * Compiler Date/Time is not set correctly on startup
  */
#include "main.h"
#include "RadioShuttle.h"
#include "RadioTest.h"
#include "GenericPingPong.h"
#ifdef FEATURE_NVPROPERTY
#include <NVPropertyProviderInterface.h>
#include "NVProperty.h"
#endif

DigitalOut statusLED(LED);
DigitalOut redLED(LED2);
InterruptIn buttonIntr(USER_BUTTON);
volatile int pressedCount;

void switchInput(void) {
	InterrruptMSG(INT_BUTTON1);
}


void timerUpdate(void) {
	static LowPowerTimeout timeout;
	if (redLED == 0)
		timeout.attach_us(&timerUpdate, 20000); // setup to call timerUpdate after 20 millis
	else
    	timeout.attach_us(&timerUpdate, 2000000); // setup to call timerUpdate after 2 seconds

	InterrruptMSG(INT_TIMEOUT);
}


int main() {
    /*
     * inits the Serial or USBSerial when available (230400 baud).
     * If the serial uart is not is not connected it swiches to USB Serial
     * blinking LED means USBSerial detected, waiting for a connect.
     * It waits up to 30 seconds for a USB terminal connections 
     */
    InitSerial(30*1000, &statusLED);
	dprintf("Welcome to RadioShuttle v%d.%d", RS_MAJOR, RS_MINOR);
    dprintf("Voltage: %.2f (%s powered)", BatteryVoltage(), BatterySource());
	
	char buf[32];
	
	bool cmdLoop = true;
	while(cmdLoop) {
		rprintf("\r\nAvailable commands (p = Property Editor, r = Reset, q = Quit)\r\nwaiting 10 secs ...\r\n");
		rprintf("\r\n$ ");
		if (ConsoleReadline(buf, sizeof(buf), true, 10000) == NULL) {
			cmdLoop = false;
			break;
		}
		switch(buf[0]) {
			case 'p':
			case 'P':
#ifdef FEATURE_NVPROPERTYEDITOR
				NVPropertyEditor();
#endif
			break;
			case 'q':
			case 'Q':
			cmdLoop = false;
			break;
			case 'r':
			case 'R':
				MCUReset();
				break;
			default:
			break;
		}
	}
	
#ifdef FEATURE_LORA
    InitRadio();
#endif
#ifdef FEATURE_LORA_PING_PONG
    DeInitRadio();
    SX1276PingPong();	// basic LoRa raw ping/pong without RadioShuttle
#endif
    dprintf("InitDefaults Done");
    timerUpdate(); // start timer
#if defined (USER_BUTTON_RISE) // attach switchInput function to the rising or falling edge
	buttonIntr.rise(&switchInput);
#else
	buttonIntr.fall(&switchInput);
#endif

	/*
	 * Main event loop, process interrupts and go to sleep
	 * the green statusLED indicates CPU activity
	 * the red redLED indicates that low power timeout function is running.
	 */
	while(true) {
        while ((readPendingInterrupts() == 0)) {
			statusLED = 0;
			if (!(usb && usb->connected()))
				sleep();
			statusLED = 1;
        }

        uint32_t pendirqs = readclrPendingInterrupts();
        if (pendirqs & INT_BUTTON1) {
#ifdef FEATURE_LORA
			statusLED = !statusLED;
            RadioUpdate(true); // pass the pressed user button to RadioShuttle
#endif
		}
        if (pendirqs & INT_LORA) {
#ifdef FEATURE_LORA
            RadioUpdate(false);
#endif
        }
        if (pendirqs & INT_TIMEOUT) {
			redLED = ! redLED;
		}
	}
}