apaczer/miyooctl_miyoocfw

Control program for custom firmware kernel

Miyoo Control v2

A command line program for Miyoo devices (bittboy, pocket go v1, powkiddy v90/q90) for talking to miyoo-specific linux kernel modules. It can set "versions", volume, and turn rumble on/off.

Usage

miyooctl [-h] [-i] [-v] [-V volume(0-10)] [-k keypad_ver(1-7)] [-l layout_ver(1-6)] [-m rumble_ver(1-3)] [-M rumble_mode(0-1)] [-s screen_ver(1-4)] [-f fpbp_hexbyte] [-t tefix(0-3)]

• -h prints the above help line
• -i prints the information that the modules report (currently the volume, keypad version & layout)
• -v verbose: print what is supposed to be happening
• -V sets the volume; range 0 to 10
• -k sets the keypad version; range 1 to 7. Note this affect how your keypad works - an incorrect version can make your keypad stop working until you shut down the device.
• -l sets the keypad layout; range 1 to 6. Note this affect how your face buttons work
• -m sets the vibration/rumble motor version; range 1-3. (Not sure that this actually works.)
• -M sets the vibration/rumble motor on/off; 0=on, 1=off
• -s sets the screen version; range 1 to 4. Note that an incorrect version will effectively disable your screen until you shut down the device.
• -f sets FP/BP for the screen driver
• -t sets Tearing effect FIX method of the ST7789 screen driver; range 0 to 3.

Note: In the latest Miyoo cfw builds you can use it in the normalboot.custom.sh bash file located on boot/<CONSOLE_VARIANT>

Compiling

A toolchain for cross-compiling is required.

Inspect the Makefile and adjust to your setup (e.g. PREFIX). It is also possible to specify these on command line, e.g. make PREFIX=arm-linux-gnueabi-.

Run make.

FP/BP

This is "front porch" and "back porch" setting for the LCD controller. The expected format is a single byte in hex format, so '00' to 'FF'. The upper four bits are FP value, the lower four bits are BP value. So, for example, A9 will set FP to 10 and BP to 9.

For example, in the screen "version 2", this is what page 263 of ST7789V datasheet refers to.

Credits

• Original version by James O'Farrell
• Rewrite (v2) by flabbergast