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--- lwc:hardware:logicgreen [2023/05/23 14:25] – John Harrison
+++ lwc:hardware:logicgreen [2023/12/13 13:32] (current) – John Harrison
@@ Line 12: / Line 12: @@
   * [[https://ceptimus.co.uk/index.php/2022/06/29/lgt8f328p-isp-programming/|In Circuit Programming]]
-    * for some reason the chip ran at 1/2 speed when doing this but ran at normal (32MHz) speed when using the bootloader
+    * for some reason the chip ran at 1/2 speed when doing this but the same chip ran at normal (32MHz) speed when using the bootloader. No fuses (that I know of) were changed. (???)
+  * [[https://github.com/dbuezas/lgt8fx/tree/master/lgt8f/libraries/lgt_LowPower|low power mode with the arduino framework]]
+==== In Circuit Programming with CLion and PlatformIO ====
+  * add this to .platformio.ini:
+<code>
+[env:program_via_ArduinoISP]
+platform = lgt8f
+framework = arduino
+board = lgt8f328p-LQFP48
+upload_protocol = custom
+upload_port = /dev/ttyACM*
+upload_speed = 19200
+upload_flags =
+    -v
+    -V
+    -C
+    $PROJECT_PACKAGES_DIR/tool-avrdude/avrdude.conf
+    -p
+    $BOARD_MCU
+    -P
+    $UPLOAD_PORT
+    -c
+    stk500v1
+upload_command = avrdude $UPLOAD_FLAGS -U flash:w:$SOURCE:i
+</code>
+  * then choose ''update platforms, toolchains, etc.'' for the new environment to be recognized/loaded by CLion
+==== Memory ====
+If using ISP and you run out of memory you can overwrite the bootloader if you wish (and I wish because I did). In ''boards.txt'' change ''328.upload.maximum_size=29696'' to ''328.upload.maximum_size=30720''
+==== Random ====
+  * software reset:
+<code>
+    VDTCR = 0x80; // make register writeable for a short time
+    VDTCR = 0x00; // clear bit 6
+</code>