Hello everyone.. I am new to the PIC micros and finding them very interesting. I am programming one right now.. PIC18F4550. One of the main reasons for using these devices is a feature called bootloader mode... great for field reprogramming.
New to me... A programmer is needed the 1st time you use a chip, in order to write the boot code.
After that, you use a utility to program that will write the rest of your code starting at address 0x800 (I think), with a USB connection! wow..
I am trouble shooting my board right now and hope to get this wrapped up next week.
I was wondering if anyone here has used this feature with the PIC.. and would share their project
PIC Bootloader
I used the tiny pic bootloader on a project. I didn't post many details, but when I built it I wrote this blog post.
I used a 16F88 and a serial port though. Also, I've not had great luck using this with the C programming environment. I think it's because I really don't understand code relocation.
I'm about to start a new job and therefore have been tied up with buying a new laptop, getting my office set up and etc... but before that I too was working on something similar. Trying to get a PIC 18F4550 working with a boot loader. I flashed my chip with the tiny pic bootloader mentioned above but then haven't had a chance to test it yet.
I used a 16F88 and a serial port though. Also, I've not had great luck using this with the C programming environment. I think it's because I really don't understand code relocation.
I'm about to start a new job and therefore have been tied up with buying a new laptop, getting my office set up and etc... but before that I too was working on something similar. Trying to get a PIC 18F4550 working with a boot loader. I flashed my chip with the tiny pic bootloader mentioned above but then haven't had a chance to test it yet.
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