Can't get it to work on a 18F45k22

[Szabi]

Hi There!

I would like to ask for a litle help to get the bootloader working on a 18F45k22.
Communicatoin with the bootloader seems to be O.K., but I'm unable to uploade my hex.

I'm using MPLAB X IDE v3.30 and mpasm v5.67 compiller for the firmware, with "build absolute mode" thicked.
I modified "Dan_tinybld18F23K22-43K22-24K22-44K22-25K22-45K22-26K22-46K22_int16MHz_19200_r4.asm" as follows:

;#include "p18f23k22.inc"
#include "p18f45k22.inc"
;IdTypePIC = 0x61       ; Please refer to the table below, must exists in "piccodes.ini"    
IdTypePIC = 0x64
;#define max_flash  0x2000  ; in WORDS, not bytes!!! (= 'max flash memory' from "piccodes.ini" divided by 2), Please refer to the table below
#define max_flash  0x8000
#define SELECTEUSART 1      ; EUSART(1/2), Please refer to the table below

#define EEPROMSIZE 256      ; Size of EEPROM (256/1024), Please refer to the table below

xtal    EQU     16000000    ; you may also want to change: _HS_OSC _XT_OSC
baud    EQU     19200       ; standard TinyBld baud rates: 115200 or 19200

After successfull compillation I uploaded it to the PIC and connection with "Tiny Multi Bootloader+ v.0.11.1" succedded without problems
"
Check Device...
Open COM3 serial port at 19200bd
Hardware RTS reseting Device
Found: 18F w/32KB flash & 256B EEPROM
Close COM3 serial port
"

I created a little test code with MPLAB X IDE v3.30 and XC8 v1.35 compiller, really nothing special.

#include "mcc_generated_files/mcc.h"

/*
                         Main application
 */
void main(void)
{
    // Initialize the device
    SYSTEM_Initialize();

    TRISD = 0x00;
    ANSELD = 0x00;

    TRISE = 0x00;
    ANSELE = 0x00;

    while (1)
    {
        // Add your application code

        LATD = 0xff;   
        //LATE = 0xff; 
        for (int i = 0; i < 40; i++) {
            __delay_ms(25);
        }

         LATD = 0x00;
        //LATE = 0x00;
        for (int i = 0; i < 40; i++) {
            __delay_ms(25);
        }        
    }
}

The resuplting tiny HEX file looks as follows:

:04000000D2EF3FF00C
:107FA4000001D5EF3FF0956ABD0E8C6E8C68026AB5
:107FB400036A21D8E82EFED7012EFCD700D0024A4E
:107FC400032A03BEF6D7035003E1640E025CF1E317
:107FD4008C6A046A056A0FD8E82EFED7012EFCD7F6
:107FE40000D0044A052A05BEF6D70550DFE1640E29
:0C7FF400045CDCE2F0D71A0E016EF80C01
:020000040020DA
:08000000FFFFFFFFFFFFFFFF00
:020000040030CA
:0E000000FF231F3CFFBF85FF0FC00FE00F4026
:00000001FF

by trying to upload it with the bootloader I'm getting the follwing error:

Check Device...
Open COM3 serial port at 19200bd
Hardware RTS reseting Device
Found: 18F w/32KB flash & 256B EEPROM
Open HEX file: \vmware-host\Shared Folders\myuser\MPLABXProjects\quickstart xc8.X\dist\default\production\quickstart_xc8.X.production.hex
Error: hex file too large, writing bootloader firmware!!!
ERROR: problem in writing flash memory!!!
Close COM3 serial port

Many thanks in advance!

[edorul]

Hello,
Can you try the hack explained in the "Tested Compilers: Microchip PIC" web page, section "XC8", from the "TinyMultiBootloader+" web site:
http://tinypicbootload.sourceforge.net/
Best regards,
Edorul

[Szabi]

Hi!

It looks like the workaround does the trick, thanks!
Sorry but I missed this part because it is not included in the latest documentation included in Tiny Multi Bootloader+ (v0.11.0).zip

Something I forgot to mention before is another modificaion I did commented the following line because it is no such cinfiguration bit hence it was not compiling.
; config P2BMX = PORTB5 ;P2B is on RB5

Are there any plans for an upgrade?

Thanks!

[edorul]

Thanks for the feedback!

No, there is no update planned.