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--- ovi40test:ovi40_uiboardtest [16.01.2018 22:22] – ↷ Seite von ovi40_uiboardtest nach ovi40test:ovi40_uiboardtest verschoben df9ts
+++ ovi40test:uiboardtest [18.01.2018 23:59] – df9ts
@@ Zeile 1: / Zeile 1: @@
+{{tag>stub}}
+===== UI Board Test & Fehlersuche =====
-==== UI Board Test & Fehlersuche ====
 die MCU hat zwei (!) Pin 1 Markierungen
 <bootnote> Also ganz wichtig: Wie auf dem Bild zu sehen unbedingt den einen Anschlußpin vor dem Einbau kürzen/abschneiden. </bootnote>
@@ Zeile 23: / Zeile 23: @@
   * R37 auf 6,8k (D2 rot)
   * R116 auf 6,8k (D3 blau)
+==== MCU wiederbeleben ("bricked MCU") ====
+If something strange or unexpected happened to your board and none of the usual procedure are working to install the Bootloader or the Firmware, this might bring life back into your UI.
+You will need :
+- an up to date STM32 ST-LINK utility ( http://www.st.com/en/development-tools/stm32-programmers.html?querycriteria=productId=LN2013 ) running on something (you choose)
+- a ST-LINKV2 probe ( http://www.st.com/content/st_com/en/products/development-tools/hardware-development-tools/development-tool-hardware-for-mcus/debug-hardware-for-mcus/debug-hardware-for-stm32-mcus/st-link-v2.html ), (you might use some other compatible hardware)
+- latest version of the Bootloader and/or UHSDR Firmware
+The only tricky part is to connect the probe JTAP connector to the JP8 UI board, here are the needed wires :
+JP8-3 (SWDIO) to JTAG-7
+JP8-4 (SWCLK) to JTAG-9
+JP8-5 (UI_3V3) to JTAG-1
+JP8-6 (GND) to JTAG-20
+The rest of the procedure is straight forward : connect, erase, flash and you are done.
+One additional trick, when I first connected to the MCU, I got an error message « Readout Protection Mode » and was unable to erase the chip. I finally choosed to try to flash a first time and the utility did what was necessary to remove the protection mode. Cool, thank you STM !
+[{{:ovi40test:img_1971.jpg?400|ST-Link connection to UI board (Photo F4HTX)}}]
+A couple of us faced the same issue during beta testing the new UI board.
+But as you could see a cheap chinese ST Link adapter from Amazon or eBay saves your day
+Here are the steps. Unfortunately in German but maybe it helps.
+https://www.amateurfunk-sulingen.de/forum/index.php?board=15;action=display;threadid=577;start=315
+Register values from Andreas:
+https://www.amateurfunk-sulingen.de/forum/index.php?board=15;action=display;threadid=577;start=285
+The URLs are from a (forgotten) I40 UI thread in the mcHF folder.