Posts

A step-by-step guide to enabling the SPI interface and configuring Yocto recipes for E-Paper displays

A step-by-step guide to configuring Yocto recipes and hardware setup for the GT911 touch controller

A guide to creating custom image recipes and distribution configurations in your own Yocto layer, eliminating the need for manual local.conf edits

Understanding and using the $RANDOM internal variable in Bash, including its open-source implementation

A guide to flashing the compiled LineageOS 14.1 ROM and recovery image to the Samsung Galaxy Note 8.0 (n5110).

A guide to configuring a Docker build environment, syncing repositories, and compiling a custom ROM for the n5110

You can use the built-in function __builtin_choose_expr to evaluate code depending on the value of a constant expression. This built-in function returns exp1 if const_exp, which is an integer constant expression, is nonzero. Otherwise it returns exp2.

The alloca() function allocates size bytes of space in the stack frame of the caller. This temporary space is automatically freed when the function that called alloca() returns to its caller.

A guide to understanding and using the -fsigned-char and -funsigned-char GCC options to control the signedness of plain char.