topic sdio card detection in MQX Software Solutions

sdio card detection

admin — Tue, 24 Apr 2012 03:56:43 GMT

Dear all:

with k60 mcu and mqx, I would like to use cd/data3 as card detection.

So card detection is enabled and the corresponding int also is enable, but there is on intterupt trigger when I have the SD card inserted.

Any ideas?

Re: sdio card detection

c0170 — Tue, 24 Apr 2012 13:27:47 GMT

Hi fzhu129,

what version of MQX are you using? Have you enabled the pull-up for the input pin cd/data3?

This is the command: lwpgio_set_attribute:

lwgpio_set_attribute(&pin_lwgpio_structure, LWGPIO_ATTR_PULL_UP, LWGPIO_AVAL_ENABLE);

Regards,

MartrinK

Re: sdio card detection

admin — Tue, 24 Apr 2012 22:29:46 GMT

Hello MartrinK:

Mqx3.8.

Our customized don't use extra pin for detecting card.

I am trying to use cd/data[3], right now I am configure cd/data[3] no pull up enable so I can see rising edge when card inserted but I cannot see interrupt being generated.

Don't you have any example to make sd card working in interrupt mode with cd/data[3]?

Thanks

Re: sdio card detection

monXii — Thu, 29 Oct 2020 09:00:28 GMT

hey fzhu129.

i had the same problem .. i'm using K60 with MQX 3.8 on my cutom board..

i check it polled in my sdcard task .. maybe it helps

  // check if a card is there ..  inserted=TRUE;  param=0;  ioctl (com_handle, IO_IOCTL_ESDHC_GET_CARD, &param);  if (param==0) { inserted=FALSE; }

but for this u need to modify the BSP ..

init_gpio.c

_mqx_int _bsp_esdhc_io_init(    uint_8  dev_num,    uint_16 value){    SIM_MemMapPtr   sim  = SIM_BASE_PTR;    PORT_MemMapPtr  pctl;    switch (dev_num)    {        case 0:            /* Configure GPIO for SDHC peripheral function */            pctl = (PORT_MemMapPtr)PORTE_BASE_PTR;            pctl->PCR[0] = value & (PORT_PCR_MUX(4) | PORT_PCR_PS_MASK | PORT_PCR_PE_MASK | PORT_PCR_DSE_MASK);    /* ESDHC.D1  */            pctl->PCR[1] = value & (PORT_PCR_MUX(4) | PORT_PCR_PS_MASK | PORT_PCR_PE_MASK | PORT_PCR_DSE_MASK);    /* ESDHC.D0  */            pctl->PCR[2] = value & (PORT_PCR_MUX(4) | PORT_PCR_DSE_MASK);                                          /* ESDHC.CLK */            pctl->PCR[3] = value & (PORT_PCR_MUX(4) | PORT_PCR_PS_MASK | PORT_PCR_PE_MASK | PORT_PCR_DSE_MASK);    /* ESDHC.CMD */            pctl->PCR[4] = value & (PORT_PCR_MUX(4) | /*PORT_PCR_PS_MASK | */PORT_PCR_PE_MASK | PORT_PCR_DSE_MASK);    /* ESDHC.D3  */            pctl->PCR[5] = value & (PORT_PCR_MUX(4) | PORT_PCR_PS_MASK | PORT_PCR_PE_MASK | PORT_PCR_DSE_MASK);    /* ESDHC.D2  */            /* Enable clock gate to SDHC module */            sim->SCGC3 |= SIM_SCGC3_SDHC_MASK;            break;        default:            /* Do nothing if bad dev_num was selected */            return -1;    }    return MQX_OK;}

as default data3 is pulled high.. but it must be an pull down! cause the card has the pull up internally..