Missing "__libc_init_array();" wenn using samd without USB
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Hello all,
I tried to build atsam gateway without USB support and had the problem that the sercom pointer were not initialized. The problem is that without the "USBCON" define, “__libc_init_array()” is not called within the MyMainSAMD.cpp main(). After moving “__libc_init_array()” out of the “USBCON” condition, everything works fine.
/* * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * Created by Henrik Ekblad <henrik.ekblad@mysensors.org> * Copyright (C) 2013-2020 Sensnology AB * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. */ // Initialize library and handle sketch functions like we want to extern "C" void __libc_init_array(void); int main(void) { init(); __libc_init_array(); // after #if defined(USBCON) // __libc_init_array(); before USBDevice.init(); USBDevice.attach(); #endif _begin(); // Startup MySensors library for(;;) { _process(); // Process incoming data if (loop) { loop(); // Call sketch loop } if (serialEventRun) { serialEventRun(); } } return 0; }I don't know why it is within the condition and if it is good to move it outside, but it seems to work.
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Hello all,
I tried to build atsam gateway without USB support and had the problem that the sercom pointer were not initialized. The problem is that without the "USBCON" define, “__libc_init_array()” is not called within the MyMainSAMD.cpp main(). After moving “__libc_init_array()” out of the “USBCON” condition, everything works fine.
/* * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of the * network topology allowing messages to be routed to nodes. * * Created by Henrik Ekblad <henrik.ekblad@mysensors.org> * Copyright (C) 2013-2020 Sensnology AB * Full contributor list: https://github.com/mysensors/MySensors/graphs/contributors * * Documentation: http://www.mysensors.org * Support Forum: http://forum.mysensors.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. */ // Initialize library and handle sketch functions like we want to extern "C" void __libc_init_array(void); int main(void) { init(); __libc_init_array(); // after #if defined(USBCON) // __libc_init_array(); before USBDevice.init(); USBDevice.attach(); #endif _begin(); // Startup MySensors library for(;;) { _process(); // Process incoming data if (loop) { loop(); // Call sketch loop } if (serialEventRun) { serialEventRun(); } } return 0; }I don't know why it is within the condition and if it is good to move it outside, but it seems to work.
@ltigges
Hi, I can confirm your issue. Thank you for reporting!
Best will be to open a new issue in in the GitHub repo at MySensors/issues.
It would be great if you could do that- thank you.
BR Immo