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galttar · (This post was last modified: 2022-12-31, 20:32:18 by galttar.)

Hello everyone.

I'm already use ds30 loader for a long time and now I'm trying to compile a new version to test.
Will post what I did until now without success.

I'm using MPLAB X IDE v6.05 with MPLAB XC8 Compiler.

First I opened firmware_18F_XC8 project from source code.
On Project Properties I changed to PIC18F87J60 and chose pic-as. I tried with XC8 but I couldn't go ahead.

[Image: Project-Properties.png]

On settings.inc

Configured the processor:

Code:
;-------------------------------------------------------------------------------

; Device

;-------------------------------------------------------------------------------

        processor       18F87J60                    ;xxx

I'm using a crystal of 25MHz than changed the configuration for that.

Code:
;-------------------------------------------------------------------------------

; User preferences

;-------------------------------------------------------------------------------

        #define         OSCF            25000000    //xxx oscillator frequency (including pll)

        #define         BLINIT          2000        //xxx hello receive timeout [ms]

        #define         HELLOTRIES      2           //xxx number of non hello characters received before branching to the user application

        #define         BLTIME          2000        //xxx data receive timeout [ms]

I'm using the UART 1 than I'm using the default configuration.

Code:
;-------------------------------------------------------------------------------

; UART settings

;-------------------------------------------------------------------------------

        #define         USE_UART1       1           //xxx uncomment to use uart1

        ;#define        USE_UART2       1           //xxx uncomment to use uart2

        #define         BAUDRATE        115200      //xxx baudrate

        ;#define        USE_ABAUD       1           //xxx uncomment to use auto baud rate detection, READ ERRATA FIRST

        #define         USE_BRG16       1           //xxx uncomment to use 16-bit brg

        ;#define        USE_TXENABLE    1           //xxx uncomment to use a tx enable pin

        #ifdef USE_TXENABLE

            #define     TXE_DELAY       10          //xxx time in us to wait before transmitting after pulling the tx enable pin high

            #define     TRISR_TXE       TRISD       //xxx tris register containing tx enable

            #define     LATR_TXE        LATD        //xxx port register containing tx enable

            #define     TRISB_TXE       TRISD0      //xxx tris bit for tx enable

            #define     LATB_TXE        RD0         //xxx port bit for tx enable

        #endif

Changed the configuration bits session for 18F87J60.

Code:
;-------------------------------------------------------------------------------

; Configuration bits, these macros can be found at the end of the inc-files located in

; C:\Program Files\Microchip\MPASM Suite\

;

; These can also be set in MPLAB IDE instead, they are found in Configure->Configuration bits...

;-------------------------------------------------------------------------------

// PIC18F87J60 Configuration Bit Settings

// 'C' source line config statements

// CONFIG1L

config WDT = ON         // Watchdog Timer Enable bit (WDT enabled)

config STVR = ON        // Stack Overflow/Underflow Reset Enable bit (Reset on stack overflow/underflow enabled)

config XINST = ON       // Extended Instruction Set Enable bit (Instruction set extension and Indexed Addressing mode enabled)

// CONFIG1H

config CP0 = OFF        // Code Protection bit (Program memory is not code-protected)

// CONFIG2L

config FOSC = ECPLL     // Oscillator Selection bits (EC oscillator, PLL enabled and under software control, CLKO function on OSC2)

config FOSC2 = ON       // Default/Reset System Clock Select bit (Clock selected by FOSC1:FOSC0 as system clock is enabled when OSCCON<1:0> = 00)

config FCMEN = ON       // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor enabled)

config IESO = ON        // Two-Speed Start-up (Internal/External Oscillator Switchover) Control bit (Two-Speed Start-up enabled)

// CONFIG2H

config WDTPS = 32768    // Watchdog Timer Postscaler Select bits (1:32768)

// CONFIG3L

// CONFIG3H

config CCP2MX = ON      // ECCP2 MUX bit (ECCP2/P2A is multiplexed with RC1)

config ECCPMX = ON      // ECCP MUX bit (ECCP1 outputs (P1B/P1C) are multiplexed with RE6 and RE5; ECCP3 outputs (P3B/P3C) are multiplexed with RE4 and RE3)

config ETHLED = ON      // Ethernet LED Enable bit (RA0/RA1 are multiplexed with LEDA/LEDB when Ethernet module is enabled and function as I/O when Ethernet is disabled)

Did all configuration, I started to try compile.
The first problem was with STARTADDR.
[Image: STARTADDR-error.png]

Following the code I found that STARTADDR is using BLPL64WP.

Code:
        #define     STARTADDR               ( MAX_FLASH - (BLPL64WP * 64 * 2) )                 //bootloader placement

But this constant is just defined for 18F and not for 18FJ.

Code:
        #ifdef IS_18F

            #define     BLPL64WP        4                           //bootloader placement in 64 word pages from end

            #define     BLSIZE64WP      4                           //bootloader size in 64 word pages, used by bootloader protection

            #define     BLPLP           (BLPL64WP * 64/PAGESIZEW)   //bootloader placement, pages from end

            #define     BLSIZEP         (BLSIZE64WP * 64/PAGESIZEW) //bootloader size [pages], used by bootloader protection

        #endif

Another problem is that, on 18FJ define session, BLPL64WP and BLSIZE64WP are also used.

Code:
        #ifdef IS_18FJ

            #define     BLPLP512WP      2                           //bootloader placement in 512 word pages from end

            #define     BLSIZE512WP     1                           //bootloader size in 512 word pages, used by bootloader protection

            #define     BLPLP           (BLPL64WP * 512/PAGESIZEW)  //bootloader placement, pages from end

            #define     BLSIZEP         (BLSIZE64WP * 512/PAGESIZEW)//bootloader size [pages], used by bootloader protection

        #endif

I tried to solve this errors doing the followed changes.

On IS_18FJ define session:

Code:
        #ifdef IS_18FJ

            #define     BLPLP512WP      2                           //bootloader placement in 512 word pages from end

            #define     BLSIZE512WP     1                           //bootloader size in 512 word pages, used by bootloader protection

            #define     BLPLP           (BLPLP512WP * 512/PAGESIZEW)  //bootloader placement, pages from end

            #define     BLSIZEP         (BLSIZE512WP * 512/PAGESIZEW)//bootloader size [pages], used by bootloader protection

        #endif

On ds30loader.s:

Code:
        #ifdef IS_18FJ

        #define     STARTADDR               ( MAX_FLASH - (BLPLP512WP * 512 * 2) )                 //bootloader placement

    #else

        #define     STARTADDR               ( MAX_FLASH - (BLPL64WP * 64 * 2) )                 //bootloader placement

    #endif

Now it´s compiling with success but doesn't work.
The project is attached.

Any help is welcome.

Mikael Gustavsson · 2023-01-04, 22:53:21

Hi,
The project builds fine for me with MPLAB XC8 2.40. Did you add pic-as at c:\Program Files\Microchip\xc8\v2.40\pic-as\bin\ ?

Code:
CLEAN SUCCESSFUL (total time: 5ms)

make -f nbproject/Makefile-default.mk SUBPROJECTS= .build-conf

make[1]: Entering directory 'F:/firmware_18F_XC8/ds30Loader_18F.X'

make  -f nbproject/Makefile-default.mk dist/default/production/ds30Loader_18F.X.production.hex

make[2]: Entering directory 'F:/firmware_18F_XC8/ds30Loader_18F.X'

"D:\Program Files\Microchip\xc8\v2.40\pic-as\bin\pic-as.exe" -mcpu=PIC18F87J60 -c \

-o build/default/production/_ext/1360937237/ds30loader.o \

../src/ds30loader.s \

  -mdfp="D:/Program Files/Microchip/MPLABX/v6.05/packs/Microchip/PIC18F-J_DFP/1.5.44/xc8"  -misa=std -msummary=+mem,-psect,-class,-hex,-file,-sha1,-sha256,-xml,-xmlfull -w -fmax-errors=20 -mwarn=0 -xassembler-with-cpp

"D:\Program Files\Microchip\xc8\v2.40\pic-as\bin\pic-as.exe" -mcpu=PIC18F87J60 build/default/production/_ext/1360937237/ds30loader.o \

-o dist/default/production/ds30Loader_18F.X.production.hex \

  -mdfp="D:/Program Files/Microchip/MPLABX/v6.05/packs/Microchip/PIC18F-J_DFP/1.5.44/xc8"  -misa=std -msummary=+mem,-psect,-class,-hex,-file,-sha1,-sha256,-xml,-xmlfull -mcallgraph=std -Wl,-Map=dist/default/production/ds30Loader_18F.X.production.map -mno-download-hex

Memory Summary:

    Program space        used     0h (     0) of 1FFF8h bytes   (  0.0%)

    Data space           used     0h (     0) of   EE0h bytes   (  0.0%)

    Configuration bits   used     3h (     3) of     3h words   (100.0%)

    Extra sections       used 1F99Ch (129436)

make[2]: Leaving directory 'F:/firmware_18F_XC8/ds30Loader_18F.X'

make[1]: Leaving directory 'F:/firmware_18F_XC8/ds30Loader_18F.X'

BUILD SUCCESSFUL (total time: 315ms)

Loading code from F:/firmware_18F_XC8/ds30Loader_18F.X/dist/default/production/ds30Loader_18F.X.production.hex...

Program loaded with pack,PIC18F-J_DFP,1.5.44,Microchip

Loading completed

galttar · 2023-01-08, 15:23:40

Hi Mikael Gustavsson, your bootloader is great!

Which configuration did you do?
With the changes that I posted, the project builds fine but bootloader didn´t work.

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