jsimonkeller

Thanks guys. I cleaned up the code this morning so I can get some useful information on the serial monitor. Here are some readings from this morning over a period of 5 minutes: RequestedPower:3520, ActualPower:0 WaterTempIn:64...

SO . . . I have HOT water. I spent the afternoon checking and re-checking everything and questioning the whole setup and wiring. I went into the older code we were using and tried that to no avail. Then I looked at the coding for 0x33 and...

So I ran the below code: #include "lin_bus.h" LIN lin; int lin_cs = 32; // cs and serial port set for skpang LIN / FDCAN board int led1 = 23; int lin_fault = 28; uint8_t data[4]; uint8_t CRC = 0; void setup() { pinMode(LED_BUILTIN...

Thanks Paul. I will do this and report back. Hopefully my oscilloscope settings from the last time will still be intact. I will make sure the baud rate is correct. Do you know if I can use my CSS CL1000: CAN Bus Logger & USB Interface...

Hi Paul. Thank you for reviewing the additional information and decoding it. Unfortunately, the new code did not produce heat, BUT I did take readings off of 0x27 and I thought it would be helpful to share. responseID:27,Response Data:0x20...

Hi Paul. Well we have another response from China. A lot of information to share. On the Checksum / Counter issue (as you suspected): Regarding 0x33 being listed as 3 bytes: Regarding the initialization sequence: From the LDF file...

I think the HV has to be present first because as soon as I start the car, the HV contactors open up and the HV becomes available for the AC compressor, heater and DC/DC components. I think the next question is from the LDF on the timing and if...

I wrote to them again and hope they respond with something helpful. In the meantime, is there any type of sniffing routine we could run again to see if there is some combination of bytes and bits to get some sign of life?

Thanks Paul. Me too! The CRC gives an error all the time on 3 bytes, 0s all the time on 4 bytes and 104 on 2 bytes, BUT in no configuration, do I jump off of 0x00 for the data we need to change. If 0x17 is 10+10 bits, it has to be 3 bytes...

If I change ID7 to 2 bytes, I get: responseID:17,Response Data:0x00 0x00 ,CRC:255 responseID:17,Response Data:0x00 0x00 ,CRC:255 responseID:17,Response Data:0x00 0x00 ,CRC:104 (power on)

Yes it does. When I change the ID17 back to 4 from3 it gives a 0 for CRC when power is applied, but still 0x00 for the temp. responseID:17,Response Data:0x00 0x00 0x00 0x68 ,CRC:0

I imported the above code and here was the response without 12V (along with HV ready): responseID:17,Response Data:0x00 0x00 0x1B ,CRC:255 responseID:17,Response Data:0x00 0x00 0x1B ,CRC:255 responseID:17,Response Data:0x00 0x00 0x1B ,CRC:255...

Hi Paul. Thanks for the update. I love the folks at CSS. They answered a lot of questions for me when I was converting my brake booster analog signal to CAN so I could control the creep function on the car through the Open Inverter can bus...

Thank You! That makes total sense and I really appreciate the thorough answer and explanation, as my way of doing it, while correct in this instance, would not have been in other instances. Reading Left (7) to Right (0) makes the whole...

Paul, can you help me understand how you de-code the HEX feedback on on byte consisting of various bits? For this response: responseID:27,Response Data:0x20 0x3F 0x00 0x83 0x3F 0x80 0x00 0x75 ,CRC2:0 I am curious how to understand how Byte 0...

Ah. That makes sense. Well, darn. I think my next step might be to go back to the testing you and I did for the other heaters, but knowing we have the right IDs and baud rate. I wonder if we work to see if we can get the heater feedback...

Thanks Paul. I am confused about PWM. Can we bypass the LIN BUS roadblock and just change our programming to act like PWM or are you saying the LIN and PWM are interconnected and we cannot program for PWM as an alternative to PWM? I...

Thanks again Paul. I have reached out once more with the above response to see if they can help us understand their logic and also if they can provide us with the initialization sequence. Will report back. In the meantime, I wondered if we...

Hi Paul. I heard back from the engineer in China. Hope this information is helpful. Additionally, on our code we are using, they had this feedback: Similarly: Of course, the problem is that when I make the above changes back to 3s and...

Thanks Paul. Sorry I didn't understand the issue with checksum. I am wondering if the key again will be the "enable" command in 0x33 and confirming if it worked. I will say that one item I was able to decode from the received data that made...

Manual attached, along with other specs provided. Hope this is helpful to you.

Thanks again Paul. I will make sur line 463 is commented out. Thanks also for the updated code. I will give it a whirl. I will try to get you this entire manual as well. In the meantime, I have asked about the checksum and no response...

Hi Paul. I hooked up everything this morning. Had to rewire connectors for the new heater and get my test bench back up and running. When I turned things on, the CRCs all went from 255 to 0, which is good. No heat though. Here is the...

Paul, thank you so much for doing this. The heater just arrived at my office, so I will take it home and hook it up to the test bench I was using before and fire it up and see what happens with this code. Maybe we will get lucky on the first...

Hi Paul. The new heater arrives today and I plan to try to get this one working, since we were provided with valuable information we did not have on the other heaters, such as baud rate (19200) and the IDs that are supposed to send and receive...

Thanks again Paul. I do not believe I have any info on calculating the checksum. I will ask the seller and look for anything in what they sent to me. Just so I understand better, on ID22, is the 0xD0 (208) because in byte 3, there are 2 1s...

Hi Paul. Hope all is good with you. I put down the heater work for a few months because the weather was no longer cold. I was going to jump into it this summer and get this working before the cold comes back, so I am looking at things...