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Adding support for a new 16bit PIC MCU requires the following steps:
- Create picDEVICE.c and picDEVICE.h from pDEVICE.inc using
perl /path/to/sdcc/support/scripts/inc2h-pic16.pl \
/path/to/gputils/header/pDEVICE.inc
- mv picDEVICE.h /path/to/sdcc/device/include/pic16
- mv picDEVICE.c /path/to/sdcc/device/lib/pic16/libdev
- Add DEVICE to /path/to/sdcc/device/lib/pic16/pics.all
Note: No 18f prefix here!
- Either
- add the new device to /path/to/sdcc/device/lib/pic16/libio/*.ignore
to suppress building any of the I/O libraries for the new device4.2, or
- add the device (family) to /path/to/sdcc/support/scripts/pic18fam-h-gen.pl
to assign I/O styles, run the pic18fam-h-gen.pl script to
generate pic18fam.h.gen, replace your existing pic18fam.h
with the generated file, and (if required) implement new I/O styles
in /path/to/sdcc/device/include/pic16/{adc,i2c,usart}.h
and /path/to/sdcc/device/lib/pic16/libio/*/*.
- Edit /path/to/sdcc/device/include/pic16/pic18fregs.h
The file format is self-explanatory, just add
#elif defined(picDEVICE)
# include <picDEVICE.h>
at the right place (keep the file sorted, please).
- Edit /path/to/sdcc/device/include/pic16devices.txt
Copy and modify an existing entry or create a new one and insert it
at the correct place (keep the file sorted, please).
- Add the device to /path/to/sdcc/device/lib/pic16/libdev/Makefile.am
Copy an existing entry and adjust the device name.
- Add the device to /path/to/sdcc/device/lib/pic16/libio/Makefile.am
Copy the record from the 18f2220 and adjust the device name.
If the new device does not offer ADC, I
C, and/or (E)USART
functionality as assumed by the library, or if you added the new device
to .../libio/{adc,i2c,usart}.ignore, remove the lines with
references to adc/*.c, i2c/*.c, or usart/*.c,
respectively.
- Update libdev/Makefile.in and libio/Makefile.in
using
./bootstrap.sh
in /path/to/sdcc/device/lib/pic16.
- Recompile the pic16 libraries as described in 4.6.9.
Next: 4.6.11 Memory Models
Up: 4.6 The PIC16 port
Previous: 4.6.9 Libraries
Contents
Index
2012-01-14