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N4IRS / MMDVM-Install

Scripts and config files to run the MMDVM on Debian Jessie
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modem down after flash new firmware #7

Closed ct1jib closed 6 years ago

ct1jib commented 6 years ago

Hi,

Have a STM32DV v2 (red). Today decide load the last firmware, all of this because the RSSI do not work.

I,ve follow your readme step by step without any problem. At the end do a raspberry shutdown remove power and the JP1 and reconnect the power. The STM lose the "ramping" leds on start only the Power led lights on and the software tell's something like "I quit after 6 attempts".

For some reason the STM don't boot the firmware, only DFU mode works.

Can you help?? or give another option for STM to come back to life.

Thanks

N4IRS commented 6 years ago

There was a change made to the firmware that causes the problem. I have updated the instructions to reflect the changes needed.

To recover the board, you will need a ST-Link programmer This is the programmer: https://www.ebay.com/itm/ST-Link-V2-Mini-STM8-STM32-STLINK-Simulator-Download-Programming-Unit-with-Cover/322478832246?hash=item4b153c7a76:g:3usAAOSwls5Y6xBM

while you are waiting for the device, add the 6 pin male header to JP2

Find and Download "STM32 ST-Link Utility) I'm running Version 4.0.0 It's a Windows program. I run it under Windows 7 32 bit. You will want to have the schematic for the red board handy. http://www.repeater-builder.com/products/pdfs/STM32_DVM_v2.pdf The connections are 4 wires. The pinout for the ST-Link is on the side of the device. 3.3V Pin 1 JP2 Ground Pin 3 JP2 SWDIO Pin 2 JP2 SWCLK Pin 4 JP2

One note: The ST-Link will power the board. I suggest you work on the board disconnected from the Pi. You can the use the ST-Link to upload firmware to the board.

Or, you can ship me the board, and I will do it for you.

Steve N4IRS

ct1jib commented 6 years ago

Thanks Steve, I'll do that

ct1jib commented 6 years ago

Problem solved without JTAG!, the serialRB was the solution

Thanks Steve