Kinetis Microcontrollers中的主题 Re: Read UID MK66FN2M0VMQ18 Through EzPort (board FDRM-K66F)

Read UID MK66FN2M0VMQ18 Through EzPort (board FDRM-K66F)

manurlruiz — Thu, 26 Jul 2018 05:57:31 GMT

Hi,

I am trying read the UID of the Chip MK66FN2M0VMQ18, but I don't know how to convert the address 4004_8054 of 32 bits to 24 bits, so that through of EzPort I may get data of SIM register of UID.

The reference Manual of this family of controllers indicate that you can access this register through EzPort.

Re: Read UID MK66FN2M0VMQ18 Through EzPort (board FDRM-K66F)

kerryzhou — Thu, 26 Jul 2018 08:18:49 GMT

Hi Manurl Ruiz,

Why you need to convert the address 4004_8054 of 32 bits to 24 bits? Could you give me more details? I think you can send the 32bits address directly.

Actually, about the EzPort operation, we have a document for your reference, please check it:

How to use EzPort module

Even it is used for K60 and K22, but you still can refer to that code.

Wish it helps you.

Have a great day,
Kerry

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Re: Read UID MK66FN2M0VMQ18 Through EzPort (board FDRM-K66F)

manurlruiz — Thu, 26 Jul 2018 09:47:54 GMT

Hi kerryzhou,

I am trying read register using the EzPort commands, specifically command Flash Read Data. The struct of this command is:

The address of SIM Register that I want, it need 32 bits for its representations. In addition, the reference Manual of MK66FN2M0VMQ18 indicates that changes must be to made to the address maintain a width 24 bits.

Next, I show the function that I am using:

* @param addr Addres of register.
* @param data Param where store data.
* @param size Number data to read.
* @return EZ_RESULT_SUCCESS / EZ_RESULT_ERROR
*/
TEzResult ezSectorReadSIM(uint32_t addr, uint8_t *data, uint32_t size)
{
if( !data || !size ) return EZ_RESULT_ERROR;
if( size>4096 ) return EZ_RESULT_ERROR;
if( addr & 0xBFFB7F03) return EZ_RESULT_ERROR; //Valid Addres SIM UID

//Command EzPort Flahs Read Data.
wrBuf[0] = 0x03;
wrBuf[1] = (uint8_t)((addr >> 16) & 0xFF);
wrBuf[2] = (uint8_t)((addr >> 8) & 0xFF);
wrBuf[3] = (uint8_t)(addr & 0xFF);
// Sending of the command and Receive data.
if( ezSpiTransfer(wrBuf, rdBuf, 5+size) == EZ_RESULT_SUCCESS ){
memcpy(data, &rdBuf[4], size);
return EZ_RESULT_SUCCESS;
}
else {
return EZ_RESULT_ERROR;
}
}