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--- keilbug [2017/12/25 15:21]
sirdomsen created
+++ keilbug [2018/06/20 13:02] (current)
sirdomsen
@@ Line 1: / Line 1: @@
-===== Keil-Bug workaround (needed for almost all boards except    H101/H8S_red  or  H8mini_green ) =====
+<font 26px/inherit;;rgb(231, 76, 60);;inherit>Since Keil MDK 5.25 does not have the bug anymore, we recommend to update (see Downloads section)</font>
-As this question is being asked from time to time in H8 mini thread, I'll write a short answer here:
+===== Keil-Bug workaround (needed for almost all boards except H101/H8S or H8mini_green ) =====
+**<font 14px/inherit;;inherit;;inherit>As this question is being asked from time to time in H8 mini thread, I'll write a short answer here:</font>**
   - Install (if not already) [[http://www.st.com/en/development-tools/stsw-link004.html|STLink Utilities]]
   - Connect (if not already) STLink to USB port
-  - Connect Quad to STLink
+  - Connect quad to STLink (step 3 & 4 not needed, but you'll get a connect error then)
   - Power the quad using a battery
-  - Click on "target"-->"connect", some blue writing should be displayed. If not, check Wires, check if the board is powered, are STLink drivers installed correctly?
+  - Click on "target"–>"connect", some blue writing should be displayed. If not, check Wires, check if the board is powered, are STLink drivers installed correctly?
-  - Click on "target"-->"disconnect"
+  - Click on "target"–>"disconnect"
   - Open Keil
-  - Unplug & plug quad's battery
+  - Unplug & plug quad's battery (if flashed for the first time, otherwise continue step 10)
-  - Click "flash"-->"erase" (if flashed for the first time, otherwise continue step 10)
+  - Click "flash"–>"erase" (if flashed for the first time, otherwise continue step 10)
-  - Click "flash"-->"download"
+  - Click "flash"–>"download"
   - Finished
+<font inherit/inherit;;rgb(255, 0, 0);;inherit>Note: If you're trying to erase a "fresh" board, the time between battery plug-in and erase is limited, be aware of that and do it as fast as you can / repeat if it didn't work!</font>
+**<font 14px/inherit;;inherit;;inherit>Here is how krillex does it:</font>** [[https://www.rcgroups.com/forums/showpost.php?p=38868191&postcount=12547|Link to post]]
+Regarding flashing the blue board for the first time I also have some problems but this is what I do: \\
+. Connect usb-programmer and battery to fc. \\
+. Run the "st-link upgrade tool" and update firmware (even if it's already updated). Close the upgrade software. \\
+. Erase memory from within Keil. \\
+. Disconnect usb-programmer from PC and battery from fc. \\
+. Reconnect programmer to PC and battery to fc. \\
+. Run the "upgrade tool" again. Close upgrade tool. \\
+. Download software from within Keil. \\  \\
+Any flashings after that, just use download in Keil (use "upgrade tool" first). \\
+It's the first time with a new blue board that is problematic. \\
+I'm sure there are other ways to get it working but that procedure works good for me.
+**<font 14px/inherit;;inherit;;inherit>Another version from Ian444:</font>** [[https://www.rcgroups.com/forums/showpost.php?p=38869818&postcount=12554|Link to post]]
+Yet another recipe. Must be carried out in this order. Keil can be open, but minimised on the PC. \\
+. Open the ST-Link Utility program. \\
+. Connect ST-Link to USB port. Do not connect ST-Link to quad yet. \\
+. Click "connect" in ST-Link Utility program. \\
+. You get a "cannot connect" message. \\
+. Close the message and close the ST-Link Utility program. Now the ST-Link is "initialised". \\
+. Open (or maximise) Keil, connect the quad, connect the quad's battery and flash it. \\  \\
+Note for first erase and flash - usually it is needed to disconnect and then reconnect the battery after the erase and before the flash. No need to disconnect the quad or the ST-Link (or do anything in Keil) when doing this.

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