Hello!
I saw voodoo's youtube videos about flashed wraith32 esc two years ago and was interested alot.
I bought blheli32 esc long time ago but yesterday i recalled about it and decided to flash it to am32 too. That was crazy two days and i was close to give up, but i did it!
My story:
The first trouble was my esc. I bought very cheap racerstar tattoo 30a. It has no swc swd pads so i had to solder to smt32 legs... that was hard.
The second trouble was in software - STM32CubeProgrammer refused to connect with esc. But it helped to flash ST-LINK.
I tried STM32 ST-LINK Utility and somehow it connected to esc! I cant recall all details and could not repeat it. But i remember that it worked only on the "hot plug" mode. It was miracle - i turned off memory protection and erased all data.
Then i flashed PA2 bootloader and AM32_SISKIN_F051_1.99 firmware. Got the third trouble - eeprom flash returned error. I think my fauld was i forgot to set 0x08007C00 address. Tried couple times and no succes. Manual says i need ST-LINK only for unlock memoty and flash bootloader. So i decided to switch to arduino nano.
Found out how to flash arduino to bootloader using BLHeliSuite32. My arduino flashed only with baud = 57600. Tried alot to connect to esc with Multi Esc Config but got "M1: Did not connect" all the time.
Decided to try more ST-LINK but spend all day soldering and trying to connect esc with ST-LINK Utility. No success.
I was desperated. I started to try arduino again with no luck. Message on this topic says "You need to have the st links, to install this firmware. The Arduino is for updating the firmware and adjusting the settings". As i said, i erased smt32 memory and flashed only bootloader, so i was sure that esc will go to trash.
Somehow i found out how to connect to the esc using arduino:
1) Run Multi Esc Config
2) Connect arduino to usb
3) Connect to arduino in Multi Esc Config
4) Connect esc to battery
5) Connect to M1 in Multi Esc Config
And it worked! I flashed firmware, eeprom and done some settings.
Before flashing and setting i have to disconnect all the parts and connect it again step by step, only that allow to connect to esc.
Also there was much more troubles concerning usb drivers. My luck i have two computers with win 7 and win 10 lol.
Result: Esc with blheli32 and 1150kv motor minimum speed was 2 round per second. Esc with am32 and 1150kv motor do 1 round per 2 seconds. It is the same min speed as hobbywing fusion se 1200kv (great combo).
Thanks to Alka and Voodoobrew, you rock!
P.S. dont buy esc without swc swd pads
And some photo: