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[dezi_3554521]

rroy​

Per our previous closed discussion here: CYW43907 SDIO Slave

Is it possible to receive 43907 Programmers Guide, and Register Map/Definitions with NDA agreement to implement SDIO slave by myself?

I try to implement driver by pieces of info in library, but get stuck in several things.

I`ve defined some structures for SDIO device (as analog of sdioh_info_t) and start to initialize structures like in sdioh_attach in bcmsdstd.c

I have add info to core info

    {

        .curmap  = (void*)PLATFORM_SDIOD_REGBASE(0x0),

        .curwrap = (void*)PLATFORM_SDIOD_MASTER_WRAPPER_REGBASE(0x0),

        .coreid  = SDIOD_CORE_ID,

        .corerev = SDIOD_CORE_REV,

    },

then Ive copy some function for reading and writing registers.

static uint8 read_sdiod_reg8(sdio_device_info_t *sd, uint reg)

{

volatile uint8 data = *(volatile uint8 *) (sd->mem_space + reg);

dsd_ctrl(("8: R Reg 0x%02x, Data 0x%x\n", reg, data));

return data;

}

static void write_sdiod_reg8(sdio_device_info_t *sd, uint reg, uint8 data)

{

    *(volatile uint8 *)(sd->mem_space + reg) = (uint8) data;

    dsd_ctrl(("8: W Reg 0x%02x, Data 0x%x\n", reg, data));

}

Then I`ve implement function for os allocation and free (sdiod_mos_init,sdiod_mos_free) and try to read and write registers, defined in sdio.h

void application_start(void)

{

wiced_init();

sdiod_init(0);

while(1)

{

    printf("hi\r\n");

    wiced_rtos_delay_milliseconds(10000);

}

}

int sdiod_init( void *cb_func)

{

sdio_device_info_t *dsd;

dsd_trace(("%s\n", __FUNCTION__));

if ((dsd = (sdio_device_info_t *) malloc(sizeof(sdio_device_info_t))) == 0){

dsd_err(("sdioh_attach: out of memory, malloced %d bytes\n", MALLOCED(0)));

return 0;

}

memset((char*)dsd,0, sizeof(sdio_device_info_t));

sdiod_mos_init(dsd);

osl_core_enable(SDIOD_CORE_ID);

dsd->mem_space = (volatile char *)PLATFORM_SDIOD_REGBASE(0x0);

    if (dsd->mem_space == NULL) {

        dsd_err(("%s:ioremap() failed\n", __FUNCTION__));

        sdiod_mos_free(dsd);

        free(dsd);

    }

    if(cb_func != NULL) {

    dsd->intr_handler = cb_func;

    dsd->intr_handler_arg = NULL;

    dsd->intr_handler_valid = TRUE;

    } else {

        dsd->intr_handler = NULL;

        dsd->intr_handler_arg = NULL;

        dsd->intr_handler_valid = FALSE;

    }

    read_sdiod_reg8(dsd, SDIOD_CCCR_REV);

    read_sdiod_reg8(dsd, SDIOD_CCCR_SDREV);

    read_sdiod_reg8(dsd, SDIOD_CCCR_IOEN);

    write_sdiod_reg8(dsd,SDIOD_CCCR_IOEN,SDIO_FUNC_ENABLE_1|SDIO_FUNC_ENABLE_2|SDIO_FUNC_ENABLE_3);

    read_sdiod_reg8(dsd, SDIOD_CCCR_IOEN);

     read_sdiod_reg8(dsd, SDIOD_CCCR_IORDY);

     read_sdiod_reg8(dsd, SDIOD_CCCR_INTEN);

     read_sdiod_reg8(dsd, SDIOD_CCCR_INTPEND);

     read_sdiod_reg8(dsd, SDIOD_CCCR_IOABORT);

     read_sdiod_reg8(dsd, SDIOD_CCCR_BICTRL);

    read_sdiod_reg8(dsd, SDIOD_CCCR_CISPTR_0);

}

At all CYW43907 have error while reading SDIOD_CCCR_CISPTR_0, and SDIOD_CCCR_IOEN didnt write a parameters.

So, it`s nessesary for me to receive your guides to proceed my work, cause now I didn`t know what bus clocks I`ve missed to initialize or which register have R R/W W attributes etc....

Thanks a lot for replies!

[GauravS_31 · Accepted solution]

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