From bb15ced4517555a7adf1b0cc1d042e27b49bbaaa Mon Sep 17 00:00:00 2001 From: EmanuelFeru Date: Wed, 26 Feb 2020 17:07:44 +0100 Subject: [PATCH] Updated How to Unlock MCU Flash (markdown) --- How-to-Unlock-MCU-Flash.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/How-to-Unlock-MCU-Flash.md b/How-to-Unlock-MCU-Flash.md index 17c84c5..45e9062 100644 --- a/How-to-Unlock-MCU-Flash.md +++ b/How-to-Unlock-MCU-Flash.md @@ -36,12 +36,12 @@ If you get funny, unexpected behavior from your board after flashing (see this [ * Step 1: Install the [ST-Flash Utility](https://github.com/texane/stlink) * Step 2: Install [OpenOCD](https://zoomadmin.com/HowToInstall/UbuntuPackage/openocd) -* Step 2: Connect the ST-Link programmer to the MCU programming pins GND, SWDIO, SWCLK. Connect the 3V3 pin only if your MCU is not powered externally. -* Step 3: Open a terminal and send the following OpenOCD command: +* Step 3: Connect the ST-Link programmer to the MCU programming pins GND, SWDIO, SWCLK. Connect the 3V3 pin only if your MCU is not powered externally. +* Step 4: Open a terminal and send the following OpenOCD command: ``` openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c init -c "reset halt" -c "stm32f1x unlock 0" ``` -* Step 4: If that does not work. Try: +* Step 5: If that does not work. Try: ``` openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c init -c "reset halt" -c "mww 0x40022004 0x45670123" -c "mww 0x40022004 0xCDEF89AB" -c "mww 0x40022008 0x45670123" -c "mww 0x40022008 0xCDEF89AB" -c "mww 0x40022010 0x220" -c "mww 0x40022010 0x260" -c "sleep 100" -c "mww 0x40022010 0x230" -c "mwh 0x1ffff800 0x5AA5" -c "sleep 1000" -c "mww 0x40022010 0x2220" -c "sleep 100" -c "mdw 0x40022010" -c "mdw 0x4002201c" -c "mdw 0x1ffff800" -c targets -c "halt" -c "stm32f1x unlock 0" ```