openinverter forum

schildere wrote: ↑Sun Nov 28, 2021 11:31 am @bexander That's awesome. Is it possible to share your Arduino code?

bexander wrote: ↑Thu Dec 09, 2021 6:50 pm

schildere wrote: ↑Sun Nov 28, 2021 11:31 am @bexander That's awesome. Is it possible to share your Arduino code?

Sorry, didn't see your request until now.
Here is the code I used.

ResolverSetting.zip

bexander wrote: ↑Tue Nov 16, 2021 6:13 pm Was able to change resolver settings on my Leaf inverter with this information using a Atmega328p (Arduino pro mini) and a MCP2515/TJA1050 module.
Thanks for sharing, Dala!

sglassmann wrote: ↑Fri Feb 25, 2022 4:12 pm Hi bexander,
Im trying to reset my resolver # using the Arduino pro mini and mcp2515/tja1050. to transmit your code do you only need one Arduino set-up? Can you share a schematic and explain how you connected with the inverter with CAN HI and LO and what file you used with the inverter numbers. Thanks for your help. Thanks a lot. Steve

void writeResolverDataCAN()
{
	if(write)
	{
		return;
	}
	
	Serial.println("w");
	static uint8_t counter = 0;
	static uint32_t startTime = millis(); // Set start time
	uint16_t txId;
	uint8_t msg[8];
	
	if(counter == 0)
	{
		txId = 0x784;
		msg[0] = 0x02;
		msg[1] = 0x3E;
		msg[2] = 0x01;
		msg[3] = 0x00;
		msg[4] = 0x00;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
  
  if(counter == 1)
	{
		txId = 0x745;
		msg[0] = 0x02;
		msg[1] = 0x10;
		msg[2] = 0xAA;
		msg[3] = 0x00;
		msg[4] = 0x00;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
	
	if(counter == 2)
	{
		txId = 0x784;
		msg[0] = 0x03;
		msg[1] = 0x3B;
		msg[2] = 0x01;
		msg[3] = 0x7C;
		msg[4] = 0x00;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
	
	if(counter == 3)
	{
		txId = 0x784;
		msg[0] = 0x04;
		msg[1] = 0x3B;
		msg[2] = 0x03;
		msg[3] = 0x00;
		msg[4] = 0x88;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
	
	if(counter == 4)
	{
		txId = 0x784;
		msg[0] = 0x04;
		msg[1] = 0x3B;
		msg[2] = 0x04;
		msg[3] = 0x00;
		msg[4] = 0x5C;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
  
  if(counter == 5)
	{
		txId = 0x784;
		msg[0] = 0x02;
		msg[1] = 0x21;
		msg[2] = 0x01;
		msg[3] = 0x00;
		msg[4] = 0x00;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
  
  if(counter == 6)
	{
		txId = 0x784;
		msg[0] = 0x02;
		msg[1] = 0x21;
		msg[2] = 0x03;
		msg[3] = 0x00;
		msg[4] = 0x00;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
	
	if(counter == 7)
	{
		txId = 0x784;
		msg[0] = 0x02;
		msg[1] = 0x21;
		msg[2] = 0x04;
		msg[3] = 0x00;
		msg[4] = 0x00;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
	
	if(counter == 8)
	{
		txId = 0x784;
		msg[0] = 0x02;
		msg[1] = 0x10;
		msg[2] = 0x81;
		msg[3] = 0x00;
		msg[4] = 0x00;
		msg[5] = 0x00;
		msg[6] = 0x00;
		msg[7] = 0x00;
	}
	
	if(counter == 9)
	{
		txId = 0x7D2;
		msg[0] = 0x02;
		msg[1] = 0x3E;
		msg[2] = 0x00;
		msg[3] = 0xFF;
		msg[4] = 0xFF;
		msg[5] = 0xFF;
		msg[6] = 0xFF;
		msg[7] = 0xFF;
	}
  
  CAN.sendMsgBuf(txId, 0, 8, msg);
  
  Serial.print(millis() - startTime);
	Serial.print(" ");
  Serial.print(txId, HEX);
  Serial.print(" ");
  for(int i=0; i<8; i++)
  {
    Serial.print(msg[i], HEX);
    Serial.print(" ");
  }
  Serial.println();
  
  if(counter > 9)
  {
		write = true;
		counter = 0;
	}
	else
	{
		counter++;
	}
}

sglassmann wrote: ↑Thu Mar 03, 2022 1:32 am HI bexander. THanks for your help so far. I am having a hard time finding the mcp_can file for can communication in the library.
any ideas where to find file or can you send me a copy? thanks a lot and have a great day, steve

johu wrote: ↑Thu Mar 03, 2022 10:09 am Hi and welcome sglassmann! Please do not blindly quote big chunks, but pick the exact sentences you want to reply to. The thread becomes hard to read otherwise.

bexander wrote: ↑Thu Mar 03, 2022 5:08 am

sglassmann wrote: ↑Thu Mar 03, 2022 1:32 am HI bexander. THanks for your help so far. I am having a hard time finding the mcp_can file for can communication in the library.
any ideas where to find file or can you send me a copy? thanks a lot and have a great day, steve

This is the one I use:
MCP_CAN_lib-master.zip

bexander wrote: ↑Sat Feb 26, 2022 6:18 am Yes, one Arduino setup is what is needed and termination resistors in both ends of the CAN-bus.
I connected as per this: http://productions.8dromeda.net/c55-lea ... tocol.html

bexander wrote: ↑Sat Mar 05, 2022 6:13 am Yes, probably a good idea to do the programming with the inverter on the bench. Can be done in the vehicle as well but safer to do it on the bench.

skylitdriven wrote: ↑Fri Mar 04, 2022 1:53 am

bexander wrote: ↑Sat Feb 26, 2022 6:18 am Yes, one Arduino setup is what is needed and termination resistors in both ends of the CAN-bus.
I connected as per this: http://productions.8dromeda.net/c55-lea ... tocol.html

Hey bexander, I'm looking into doing the inverter swap and it seems like I will need to write the resolver code for it to work, but I am completely clueless when it comes to CAN coding and have never touched an Arduino before. I was hoping you'd be able to lend a hand with the process of how it'd work.

I understand that I will have to modify the code values based on my motor data. Would the Arduino setup be connected to the inverter (with termination resistors) outside of the vehicle before it is installed, power up the inverter, then power up the Arduino and it will run the code automatically?

Thanks in advance.

bexander wrote: ↑Sat Mar 05, 2022 6:13 am Yes, probably a good idea to do the programming with the inverter on the bench. Can be done in the vehicle as well but safer to do it on the bench.
Power up the inverter with 12V. The arduino is usually powered via the USB or serial programmer used. If you want to catch all messages comming from the Inverter you need to power up the arduino first and then the Inverter.

sglassmann wrote: ↑Mon Mar 07, 2022 2:56 am let me know if you need any help while its fresh in my mind.