ooops, I wanted to take a photo of the reflash dongle near the board to document connected pins and i didn’t realise the board was powered on under 18V
As I was struggling with getting the focus right on my smartphone, the USB connector of the dongle accidently touched the board (near the squared component positionned on 45° angle with “U2” labeled nearby) and sticked to it (like some sort of magnet effect?!?). At this moment the power supplied made a crying beeep and automatically turned off (exactly like when there is a short or excesive current consuption above the PSU limit (10A)).
I immediately put the USB dongle far away. powered off and on again the board. the motor initialization sequence no longer works (motors do not move at all + no beep). I see -0.08A consumption from the board on the PSU?. and since odrive 3.2 got no LED activity i don’t really know what’s happening. that said the LED indicator on the USB does not flash at all…
I do see ST-LINK/V2 on lsusb so the dongle might not be dead yet (its LED does not flash though)
However the “make flash” commands immediately failed (see below). i’ll try with another usb reflash tool later.
Did I fry m odrive 3.2 for good? What can i do to fix it?
root@MTBD00694:~/ODrive/Firmware# make flash openocd -f interface/stlink-v2.cfg -f target/stm32f4x.cfg -c init -c reset\ halt -c flash\ write_image\ erase\ build/ODriveFirmware.elf -c reset\ run -c exit Open On-Chip Debugger 0.9.0 (2018-01-24-01:05) Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'. Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD adapter speed: 2000 kHz adapter_nsrst_delay: 100 none separate Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : Unable to match requested speed 2000 kHz, using 1800 kHz Info : clock speed 1800 kHz Info : STLINK v2 JTAG v17 API v2 SWIM v4 VID 0x0483 PID 0x3748 Info : using stlink api v2 Info : Target voltage: 3.240795 Info : stm32f4x.cpu: hardware has 6 breakpoints, 4 watchpoints target state: halted target halted due to debug-request, current mode: Thread xPSR: 0x01000000 pc: 0xfffffffe msp: 0xfffffffc auto erase enabled Info : device id = 0x10076413 Warn : STM32 flash size failed, probe inaccurate - assuming 1024k flash Info : flash size = 1024kbytes Error: stm32x device protected Error: failed erasing sectors 0 to 4 Makefile:13: recipe for target 'flash' failed make: *** [flash] Error 1 root@MTBD00694:~/ODrive/Firmware#