The Chip Directory

The actual driver for the zl345y keyboard device would be located in MYDRV_SRC_DIR/src/keybrd/zl345y and consists of four files:

• zl345y.c: the driver's code

• zl345y.h: driver's definitions

• zl345yProp.h: driver's properties

• Imakefile

The Imakefile contains the following:

CSRCS = zl345y.c

OBJS = $(CSRCS:.c=.o) 

BuiltinDriver(D_zl345y.r, $(OBJS), $(DRV_LIBS))

DistProgram(D_zl345y.r, $(DRV_DIST_BIN)$(REL_DIR))

Depend($(CSRCS))

DistFile(zl345yProp.h, $(DRV_DIST_INC)$(REL_DIR))

The BuiltinDriver macro is used to produce the D_zl345y.r relocatable binary. The final link will be done by the mkimage tool. The first argument is the name of the binary. r is the standard extension for relocatable files. The second argument is the list of objects and the third is the list of libraries used in the link process.

The DistProgram macro copies the file, given as its the first argument, to the directory specified by its second argument. In the above example, the D_zl345y.r binary will be copied to the $MYDRV_DIR/bin/drv/keybrd/zl345y directory.

The zl345yProp.h file is exported as code by the DistFile macro to allows other drivers to include it.