Well I'm not sure what I did, but I managed to get it to work with
SSPIF at 8MHz. Thanks for the info though guys.


//Relevant code:

void main(void) {
    OSCCON  =3D 0b01111110;   //8MHz
    ANSEL   =3D 0b00000000;   //All digital inputs
    TRISA   =3D 0b11111000;   //porta
    TRISB   =3D 0b11111111;   //portb
    PORTA   =3D 0b00000000;
    PORTB   =3D 0b00000000;
    INTCON  =3D 0b00000000;   //Disable all interrupts
    INTCONbits.GIE =3D 1;     //Global interrupt
    INTCONbits.TMR0IE =3D 0;  //Timer0 interrupt
    OPTION_REG =3D 0b00000111;//Set the TMR0 rate to 1:256 (trigger
after 256k ticks)

    unsigned char i =3D 0;
    for(i =3D 0; i < 2; i++) {
        RA0 =3D 1; RA1 =3D 1; delay_ms(25);
        RA0 =3D 0; RA1 =3D 0; delay_ms(25);
    }

    TRISB1 =3D 1;
    TRISB4 =3D 1;
    SSPCON =3D 0x36;
    SSPADD =3D ADDR;
    SSPSTAT =3D 0;

    GIE =3D 1;
    PEIE =3D 1;
    SSPIE =3D 1;
    SSPIF =3D 0;

    SSPEN =3D 1;

    while(1);

}

void interrupt isr(void) {

    static unsigned char rxbufcnt =3D 0;
    static unsigned char rxbuf[6];
    if ((SSPIF) && (SSPIE)) {

        SSPIE =3D 0;    //Disable the interrupt
        SSPIF =3D 0;    //Clear the interrupt flag

        if (SSPSTATbits.S) {

            if ((!SSPSTATbits.R_nW) && (BF)) {

                //State 1: S=3D1, R_nW=3D0, D_nA=3D0, BF=3D1
                //Master write, last byte was an address
                if (!SSPSTATbits.D_nA) {
                    rxbufcnt =3D 0;
                    SSPBUF;
                }

                //State 2: S=3D1, R_nW=3D0, D_nA=3D1, BF=3D1
                //Master write, last byte was data
                else {
                    rxbuf[rxbufcnt] =3D SSPBUF;
                    rxbufcnt++;
                    SSPBUF;
                }

            }

            else if (SSPSTATbits.R_nW) {

                //State 3: S=3D1, R_nW=3D1, D_nA=3D0
                //Master read, last byte was address
                if (!SSPSTATbits.D_nA) {

                    //May not be needed
                    SSPBUF;

                    //do whatever checks or processing needed with rxbuf[]

                    //Send data, I'm sending a dummy 0xee value
                    SSPBUF =3D 0xee;  //Queue the value to send
                    CKP =3D 1;        //Release clock (from stretch)

                }

                //State 4: S=3D1, R_nW=3D1, D_nA=3D1, BF=3D0
                //Master read, last byte was data
                else if (!SSPSTATbits.BF) {
                    SSPBUF;
                }

            }

            //State 5: S=3D1, D_nA=3D1, BF=3D0, CKP=3D1
            //Master NACK
            else if ((!SSPSTATbits.D_nA) && (SSPSTATbits.BF) &&
(SSPCONbits.CKP)) {
                SSPBUF;
            }

        }

        SSPIE =3D 1;

    }

}



On Sun, Feb 10, 2013 at 1:42 AM, IVP <joecolquitt@clear.net.nz> wrote:
>> how long ago was that BF flag problem caught?
>
> It'll be a few years now - 5 ?
>
> They do seem to have trouble with module flags. I've found a flag
> issue as recently as last year, in the 33F SPI module
>
> My PIC was choking on SDHC card data and, despite much
> correspondence with Microchip Support, wasn't solved or
> even acknowledged by them. Which is why, after many similar
> instances, I just don't bother with them any more. The guys I
> seem to get are worse than useless in that they waste my time,
> often by twisting the question to suit *their* test results (eg
> trying my code on a completely different processor) and then
> close the bloody ticket as "Resolved", leading me to write a
> proper paper letter to the tech's trainers at Microchip HQ
>
> Just out of interest, this test is for an SPI byte received
>
>            btss    SPI1STAT,#SPIRBF
>            bra     $-2
>
> However, it doesn't work without this immediately before
>
>            bclr    SPI1STAT,#SPIROV
>
> This is undocumented and because I don't think the tech I was
> talking to believes me, it will probably stay undocumented
>
> Joe
> --
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> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
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