Sources for compiling a lib devoted to use Serial port 3-pins of CG10/20/50

just run make in the root directory of the project. it will produce the library libserial.a

installation into the right compiler folder is not automatic.

So you need to copy libserial.a in the lib folder of sh-elf-gcc compiler and the file include/serial.h into the include directory

make clean cleans all the .o and the library from the sources folders.