Vida CEM swapping

Post by **vtl** » 27 May 2021, 12:22

blasaab wrote: 27 May 2021, 11:59 Hi all i have done about 10 reads off my car. 3-4 Times i have got verified pin see photo is this correct?

Yes, that's the pin.

blasaab · Post by **blasaab** » 27 May 2021, 15:36

T5Luke havent been online for a while so im wondering if someone have got his cem Read tool to work? Only shows error or shuts down for me

Post by **RickHaleParker** » 27 May 2021, 16:10

blasaab wrote: 27 May 2021, 11:59 Hi all i have done about 10 reads off my car. 3-4 Times i have got verified pin see photo is this correct?

Yes that is the correct pin.

In the code, increase Samples to a higher value. See if the reliability goes up.

Here is the line you are looking for:
#define SAMPLES 30 /* number of samples per sequence, more is better (up to 100) */

Post by **RickHaleParker** » 28 May 2021, 00:57

Any Ideas? The microcontroller is not on the list.

M32C
M30855FWUGP
PBF 516F100

: 2021-05-28.png (98.69 KiB) Viewed 1338 times

Post by **vtl** » 28 May 2021, 05:14

Yes, it is a pain. I spend about 20 minutes trying to connect to the chip every time I need to flash something. You have the RESET circuit, right?

blasaab · Post by **blasaab** » 28 May 2021, 12:28

RickHaleParker wrote: 27 May 2021, 16:10
blasaab wrote: 27 May 2021, 11:59 Hi all i have done about 10 reads off my car. 3-4 Times i have got verified pin see photo is this correct?
Yes that is the correct pin.

In the code, increase Samples to a higher value. See if the reliability goes up.

Here is the line you are looking for:
#define SAMPLES 30 /* number of samples per sequence, more is better (up to 100) */

Yes i have tried Up to 90 and same result.
I have send code to Vdash and could change headlight config. Was in hurry and couldnt wait for T5LUKE program because monday is last day for inspection.

blasaab · Post by **blasaab** » 28 May 2021, 12:33

Vtl just for info on my cem the only working script was the old One.

Thanks all for the help and tips in this thread.

Post by **RickHaleParker** » 28 May 2021, 14:06

vtl wrote: 28 May 2021, 05:14 Yes, it is a pain. I spend about 20 minutes trying to connect to the chip every time I need to flash something. You have the RESET circuit, right?

That a clue, enabling a connection is a PIA.

What microcontroler profile are you using in settings? Trying to eliminate as many variables as possible.

Reset: I got all the connection pins soldered on then the Reset pad lifted. Moved the Rest connection pin to the cap and resistor in common with the pad. When the pad lifted it exposed what looks like a through hole. These may not be just pads.

Reset - +5V Move to GND and back +5V to reset.
Hold - GND
CNVss - +5V

( Null modem connection )
TDX - Interface RDX.
RDX - Interface TDX

Post by **RickHaleParker** » 28 May 2021, 14:29

I was able to get a beading needle to pass through a pad. The black dots in the center of the pads are holes. You just need to clear out the conformal coating. I would give you the diameter but my digital calipers just bit the dust.

Sent the other half after a packet of beading needles. Going to see if I can clean out the hole with the beading needles and use them as no solder test posts.

Post by **vtl** » 28 May 2021, 14:59

RickHaleParker wrote: 28 May 2021, 14:06 What microcontroler profile are you using in settings? Trying to eliminate as many variables as possible.

The one you add to config file by hands, to reflect addresses of our flash.