[SOLVED] Can a PIC be programmed over the SPI bus ?

[henninggs]

Hi.

I'm (trying) to design a CANbus node for my home automation project. Any given node consist of a main-board with a power supply circuit, a PIC18F26K80 and a demultiplexer to handle the chip select of up to 8 daughter boards.

A daughter board will at have a (small) PIC running in SPI slave mode. The main board will thus be the SPI master.

It would be nice to have the ability to change the program in the PIC of a daughter board remotely. Is it possible for the SPI master to alter the program code in the slave with just the SCLK, MOSI, MISO and SS lines connected or do I need something more ?

Best regards
Henning

 

[abaz]

If nobody posts more detailed help "PIC SPI Bootloader" would be the keywords to search.

 

[henninggs]

If nobody posts more detailed help "PIC SPI Bootloader" would be the keywords to search.

Your advice is more than enough. A google search for "PIC SPI Bootloader" uncovered among others this information:https://legacy.nrao.edu/alma/memos/html-memos/alma414/memo414.pdf

Problem solved. The answer is: Yes, an established SPI bus will be sufficient.
Thanks Abaz

Regards
Henning