lwc:hardware:logicgreen [wiki]

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===== LGT8F328P MCU =====
==== PortD pins ====
  * PD0 (pin 16): digital I/O pin
  * PD1 (pin 15): digital I/O pin
  * PD2 (pin 14): digital I/O pin
  * PD3 (pin 13): digital I/O pin
  * PD4 (pin 12): digital I/O pin
  * PD5 (pin 11): digital I/O pin
  * PD6 (pin 10): digital I/O pin
  * PD7 (pin 9): digital I/O pin
//thank you, ChatGPT//

  * [[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 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>