Hello, I need help with my Sh boot mode set-up. Long story short, I updated to ecuflash 1.43.3150, it updated the OP2 to a new firmware. EcuFlash was being real buggy on the machine it was on, so I went back to 1.42. Wrong idea. The new driver for the OP2 is not backward compatible and when you try to flash with the latest firmware on the OP2 with an earlier ecuflash, it will brick your ecu. I now have 2 ecms that have been bricked this way. In the ecuflash log it showed no errors and was able to read the rom on the 2nd ecm before I tried to flash it. I have since reupdated to 1.43.3150 in the hopes not to have it brick the ecm again.
I have a shboot mode set-up wired up with the schematic shown over at the tactrix website. One of my problems is I seem to be getting a lot of electical noise through the ground circuit when the ecu is powered up, I don't have a oscilloscope, but have a usb one on the way for my computer, hopefully it will meet my needs. I've tested the timer circuit with a buzzer from radioshack and the pitch changes when the ground circuit is added to the breadboard that the timer is on. Also with the timer circuit not powered up, but with the ground wire connected I see about .5V on the timer output wire, when I supply 5V to the timer circuit, I see 2.5V at the output pin.
Here is a log of an alternate flash attempt:
- Code: Select all
[22:16:12.954] Using interface USB <-> Serial
[22:16:14.839] sending bit rate sync bytes...
[22:16:14.839] received bit rate adjust response
sending boot command
[22:16:15.370] received bit rate adjust response
sending boot command
[22:16:15.900] received bit rate adjust response
sending boot command
[22:16:16.431] received bit rate adjust response
sending boot command
[22:16:16.961] received bit rate adjust response
sending boot command
[22:16:17.491] received bit rate adjust response
sending boot command
[22:16:18.022] received bit rate adjust response
sending boot command
[22:16:18.537] received bit rate adjust response
sending boot command
[22:16:19.051] received bit rate adjust response
sending boot command
[22:16:19.566] received bit rate adjust response
sending boot command
[22:16:20.081] received bit rate adjust response
sending boot command
[22:16:20.596] received bit rate adjust response
sending boot command
[22:16:21.111] received bit rate adjust response
sending boot command
[22:16:21.625] received bit rate adjust response
sending boot command
[22:16:22.140] received bit rate adjust response
sending boot command
[22:16:22.655] received bit rate adjust response
sending boot command
[22:16:23.170] received bit rate adjust response
sending boot command
[22:16:23.685] received bit rate adjust response
sending boot command
[22:16:24.199] no bit rate adjust response
[22:16:24.199] interface close
I get the same message if the timer circuit is connected or not. My next thought is to power the 7058 similar to hmanxx here:
viewtopic.php?f=2&t=4310&p=22301#p22301Some questions I have are:
1. Are the Vcc, PVcc1, and PVcc2 all connected to each other? In the thread above he supplied PVcc1 and PVcc2 with 5v and Vcc with 3.3. Will connecting 5V to one PVcc1 and one PVcc2 pin to supply the voltage work, or will 5V need to be supplied to all the PVcc1 and PVcc2 pins on the chip. Same question applies to the Vcc pin(s).
2. Is there a better way to supply ground so that there is less or no noise coming through the ground circuit? In the schematic on the tactrix website, the grounds look like signal grounds according to the symbols. Should the power supply ground circuit of the ECM and the serial to usb, and the timer circuit share the same ground? Or should they be separate?
Thanks