lcdmlib2 on ttgo lora32 oled v1 and modbus slave rtu

[loscorpione]

Hi Nils I used his library previously and now I'm using version 2 on module ttgo lora32 oled v1 I had to make a modbus RTU slave and for that purpose I'm using Alexander Emelianov's library https://github.com/emelianov/modbus-esp8266 I tested the library with the attached example:

include

define REGN 10

define SLAVE_ID 1

ModbusRTU mb; void setup() { Serial.begin(9600, SERIAL_8N1);

if defined(ESP32) || defined(ESP8266)

mb.begin(&Serial);

else

mb.begin(&Serial); mb.setBaudrate(9600);

endif

mb.slave(SLAVE_ID); mb.addHreg(REGN); mb.Hreg(REGN, 100); } void loop() { mb.task(); yield(); }

the library works perfectly but if I insert it in the scketch with the lcdmlib2 I have continuous restarts of the program. I found that this happens by putting this part in the void loop

void loop() { // this function must called here, do not delete it LCDML.loop(); mb.task(); yield(); }

I suppose I'm entering

mb.task(); yield();

in the wrong place Could you show me the correct way? i don't know how to fix this congratulations for the great work you have done with this library

ciao !!!

[Jomelo]

Hello, you need here a systematic troubleshooting for this restart. Please check the following things:

• is the power supply sufficient for the selected hardware?
• drives one pin more current as allowed ?
• how many dynamic memory is used ?
• can it happen that one part of the software needs to much time (search after "Disable esp8266 watchdog reset") ?
• i do not know much over the modbus library, is there any interrupt based handling used ?

ciao

[loscorpione]

• is the power supply sufficient for the selected hardware? yes I measured it
• drives one pin more current as allowed ?for the moment the only pins are connected to the uart-rs485 module and 4 buttons
• how many dynamic memory is used ? 5% of the dynamic memory is used
• can it happen that one part of the software needs to much time (search after "Disable esp8266 watchdog reset") ?This could be but how can I fix it?
• i do not know much over the modbus library, is there any interrupt based handling used ?I am not aware that the library uses interrupts

Thanks for your interest