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Old 02-11-2018, 10:05 AM   #7211 (permalink)
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Well, I'm getting no response over serial no matter what software I load on the chip, what terminal application I use, what cable I use, or what computer I use. It doesn't respond to throttle and never switches the IGBTs. The board is very different from the rest of these - I've attached some pictures. I think I'm stuck waiting for Paul to send the software.

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Old 02-11-2018, 04:01 PM   #7212 (permalink)
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Quote:
Originally Posted by jbman View Post
Well, I'm getting no response over serial no matter what software I load on the chip, what terminal application I use, what cable I use, or what computer I use. It doesn't respond to throttle and never switches the IGBTs. The board is very different from the rest of these - I've attached some pictures. I think I'm stuck waiting for Paul to send the software.
It powers up with a message after the serial is initialized .. I think the firmware version waits for maybe the throttle signal to be in range?

It was an annoying thing that I had to have the throttle connected before I could see anything.

Is it set up for a hall effect throttle or a potentiometer?

Another item - TX is transmit from the board, RX is receive to the board. A USB-to-serial adapter usually has this already switched. But if you are using an old-school serial port you need to switch pins 2 and 3. Pin 5 is ground on a 9 pin connector. With a scope on the TX and GND pins you should see *SOMETHING* if it is transmitting. I think it's 0V low and 5V high ... not -12V low and 12V high as the original RS-232C specifies.

Another thing that Paul sometimes (usually) forgets is to re-compile without debug mode. So the chip could be sitting there - waiting for a 'go' from the PICkit 3. If you load the hex file I sent that would not be the problem ... but that board looks different from mine. Surface mount dsPIC, driver chip for the serial. If you manage to compile the code I sent, you can change the code and put out a test signal of some sort. But I'm not sure if you are wanting to mess with that stuff.

Let us know if we can help
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Old 02-14-2018, 05:22 PM   #7213 (permalink)
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So, I reversed the TX and RX lines and got some garbage outputs like I did before. I should have mentioned it that earlier. I made a wrong assumption that I was getting garbage because it was crossed.

Paul sent me the software for the new board just now (woohoo!). I have the throttle hooked up properly and the serial connections set up. When I get home tonight, I'll give it a whirl with the correct software.
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Old 02-15-2018, 01:33 AM   #7214 (permalink)
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Yes this is 99% the old DC code, so it still requires a throttle connected that is moved into valid territory before starting things like the serial communications. What I ought to do is port over the AC code into DC code, so that all the serial communications matches for both of them. That would probably take a week to do and then debug it.
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Old 02-15-2018, 11:57 AM   #7215 (permalink)
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So, I reversed the TX and RX lines and got some garbage outputs like I did before. I should have mentioned it that earlier. I made a wrong assumption that I was getting garbage because it was crossed.
OK. I'd rather see garbage than nothing since sometimes I just have the baud rate wrong

Quote:
Paul sent me the software for the new board just now (woohoo!). I have the throttle hooked up properly and the serial connections set up. When I get home tonight, I'll give it a whirl with the correct software.
Can you (or Paul) send me a copy?

Paul is not known for judicious backups (!!)
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Old 02-15-2018, 01:41 PM   #7216 (permalink)
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OK. I'd rather see garbage than nothing since sometimes I just have the baud rate wrong



Can you (or Paul) send me a copy?

Paul is not known for judicious backups (!!)
Link in next post since I'm at 4 posts... lol.
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Old 02-15-2018, 01:42 PM   #7217 (permalink)
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High Power DC Board Software

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Old 02-15-2018, 01:47 PM   #7218 (permalink)
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I must be too fast - just see hex file so far. I'll wait a few minutes!
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Old 02-15-2018, 02:16 PM   #7219 (permalink)
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I must be too fast - just see hex file so far. I'll wait a few minutes!
Ah, I'm afraid I only have the controller and debug hexes at the moment. Paul will have to provide the source. I've put both hexes in that share, though.
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Old 02-15-2018, 03:12 PM   #7220 (permalink)
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I've put both hexes in that share, though.
Yup - got'em

Paul - any chance of a 'backup email' in the near future?

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