Anyone found a Bootloader for 18F26K22?

[HenrikOlsson]

Hi Dave,
I'm basically in the same boat, I use a bootloader for almost everything where an USART is available, it's just so convenient. Regarding Mecanique, I use MCSP and MCLoader all the time but I'm concidering the product dead - it is what it is and it what's avaialble now is what we'll get.

I seem to remember there was something wrong/weird with the settings for the 25K22, perhaps the same thing applies to the 26K22. I don't remeber exactly where I found the information but here are a couple of links, perhaps you've seen them both, perhaps you haven't.
http://digital-diy.com/forum/chit-ch...ader-t666.html
http://digital-diy.com/forum/amicus-...der-t1300.html

There's also a sample PBP program on the DS30 loader download page.

I placed an Digikey order yesterday, if I'd knew I would include a 26K22....

Good luck and please keep us updated!

/Henrik.

[Dave]

In fact Hendrik, The settings.inc file is from an 18F25K22 that was modified. Virtually the same. I am going to try the USART2 port this afternoon and see if it works... I'll keep in touch...

[timmers]

Regarding using 2 serial ports, I have had great success running two ports at different speeds using the 18F26K22. Sample coding below.

Tim.

INCLUDE "DT_INTS-18.bas"         ; Base Interrupt System
INCLUDE "ReEnterPBP-18.bas"     ; Include if using PBP interrupts
ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler    RX1_INT,  _SERIALIN1,   PBP,  no
        INT_Handler    RX2_INT,  _SERIALIN2,   PBP,  no
        INT_Handler    TMR1_INT, _COUNTER,     PBP,  yes
    endm
    INT_CREATE                   ; Creates the interrupt processor
ENDASM

            RCSTA1 = %11010000                    ' Enable 9bit serial port & continuous receive
            TXSTA1 = %01100100                    ' Enable transmit, BRGH = 1
            BAUDCON1.3 = 1                         ' Enable 16 bit baudrate generator
            SPBRGH1 = 0
            SPBRG1 = B562500                    ' 562500 Baud
            
            RCSTA2 = %10010000                    ' Enable serial port & continuous receive & parity
            TXSTA2 = %00100100                    ' Enable transmit, BRGH = 1
            BAUDCON2.3 = 1                         ' Enable 16 bit baudrate generator
            SPBRGH2 = 1
            SPBRG2 = B38400                        ' 38400 Baud @ 54MHZ

[Dave]

Timmers, I have NO problem using the two ports, in fact, that's why I chose the 18F26K22 for the application. I am running 3 ports, one is DEBUG. The application code is working just fine but it is Annoying to have to remove the part from the product each time to reprogram it when making development changes. I have always used the boot loader with MicroCode Studio, in fact thats why I purchased the product. I used to use the boot loader from Mel Labs but they also decided to stop supporting it a few years ago. Thats why I chose MicroCode Studio as my developement platform. Now that they are showing no interest in supporting the newer Pic's with there product (probably due to lower priority between Proton support, Amicus support and MicroCode studio support) I don't know what to do....

[HenrikOlsson]

Dave,
This won't help but I always include a ICSP header on my boards so I can connect the PICKit3 and flash the chip if I don't have access to a bootloader.

I'm currently working on a board with a 46K22, I'll see if I can get that going with the DS30 loader but I'm currently having difficulties with the FT232RL USB<->UART bridge (first time using it in my own desing) and I need to get that going before continuing. I know you're using the 26K22 but perhaps it will help you - IF I get it going that is....


/Henrik.

[timmers]

Dave,
Glad you are (port) sorted.
I allways put an ICSP header in. If PortB.6 or b.7 are inputs you need to put a 1K-ish resistor in series and ICSP connections go directly to the PIC, that way you can overdrive the attached components.
For some older designs that do not have ICSP, I have a jig to insert between the socket and the PIC with the ICSP connections made to the jig.

I am also trying to implement a bootloader and was only aware of the Microchip one. Keep me posted should you have any success.
Tim.

[Dave]

Henrik, I have been working with David Barker the last 2 days with an open source Bootloader that comes with the new MCSPX 5.0 IDE. We got it working this morning and it performs is just like the old one. It allows you to build your own Bootload hex files for any of the new PIC's. I finally got that 18F26K22 running for the new LoadShed processor.