MQX Software Solutions中的主题 Re: FRDMk64 Interface with AT45DB161

FRDMk64 Interface with AT45DB161

sudhakarp — Tue, 28 Jul 2015 04:19:37 GMT

Hi,

i am interfacing AT45DB external data flash into kinetis controller. i used DSPI Example project to write and read data from

External data flash. i am using KDS 3.0 and KSDK 1.2.0. can i use same function for write and read data from flash.? because

for reading also we want to send buffer read command and address of flash at that time which function i want to use? i mean which buffer i want to load receive command sendBuffer or receiveBuffer ?

i attached my code. is correct? please give some solution.

uint8_t receiveBuffer[TRANSFER_SIZE] = {0};

uint8_t sendBuffer[TRANSFER_SIZE] = {0};

int main(void)

{

uint8_t loopCount = 1;

uint32_t i;

uint32_t calculatedBaudRate;

dspi_status_t dspiResult;

dspi_master_state_t masterState;

dspi_device_t masterDevice;

dspi_master_user_config_t masterUserConfig = {

.isChipSelectContinuous = false,

.isSckContinuous = false,

.pcsPolarity = kDspiPcs_ActiveLow,

.whichCtar = kDspiCtar0,

.whichPcs = kDspiPcs0

};

hardware_init();

OSA_Init();

masterDevice.dataBusConfig.bitsPerFrame = 8;

masterDevice.dataBusConfig.clkPhase = kDspiClockPhase_SecondEdge; //* i changed

masterDevice.dataBusConfig.clkPolarity = kDspiClockPolarity_ActiveLow //* i changed

masterDevice.dataBusConfig.direction = kDspiMsbFirst;

// Initialize master driver.

dspiResult = DSPI_DRV_MasterInit(DSPI_MASTER_INSTANCE,

&masterState,

&masterUserConfig);

if (dspiResult != kStatus_DSPI_Success)

{

PRINTF("\r\nERROR: Can not initialize master driver \n\r");

return -1;

}

// Configure baudrate.

masterDevice.bitsPerSec = TRANSFER_BAUDRATE;

dspiResult = DSPI_DRV_MasterConfigureBus(DSPI_MASTER_INSTANCE,

&masterDevice,

&calculatedBaudRate);

if (dspiResult != kStatus_DSPI_Success)

{

PRINTF("\r\nERROR: failure in configuration bus\n\r");

return -1;

}

else

{

PRINTF("\r\n Transfer at baudrate %lu \r\n", calculatedBaudRate);

}

while(1)

{

/*******************WRITING 'A' CHARACTER INTO FLASH LOCATION ZER *************************

i=0;

sendBuffer[i++]=0x84; //FLASH BUFFER1 SELECTION COMMAND

sendBuffer[i++]=0;

sendBuffer[i++]=((bkp_byte_in>>8)&(0x03)); //ADDRESS

sendBuffer[i++]=(bkp_byte_in);

sendBuffer[i++]='A'; //DATA

txd_size=i;

dspiResult = DSPI_DRV_MasterTransferBlocking(DSPI_MASTER_INSTANCE,

NULL,

sendBuffer,

NULL,

txd_size,

MASTER_TRANSFER_TIMEOUT);

if (dspiResult != kStatus_DSPI_Success)

{

PRINTF("\r\nERROR: send data error \n\r");

return -1;

}

// Wait until slave is ready to send.

OSA_TimeDelay(100);

/*******************READING 'A' CHARACTER FROM FLASH LOCATION ZER *************************

i=0;

receiveBuffer[i++]=0xD4;

receiveBuffer[i++]=0;

receiveBuffer[i++]=((bkp_byte_out>>8)&(0x03));

receiveBuffer[i++]=(bkp_byte_out);

receiveBuffer[i++]=0;

txd_size=i;

dspiResult = DSPI_DRV_MasterTransferBlocking(DSPI_MASTER_INSTANCE,

NULL,

receiveBuffer,

txd_size,

MASTER_TRANSFER_TIMEOUT);

if (dspiResult != kStatus_DSPI_Success)

{

PRINTF("\r\nERROR: receive data error \n\r");

return -1;

}

// Print out receive buffer.

PRINTF("\r\n Master receive:");

for (i = 0; i < TRANSFER_SIZE; i++)

{

// Print 16 numbers in a line.

if ((i & 0x0F) == 0)

{

PRINTF("\r\n ");

}

PRINTF(" %02X", receiveBuffer[i]);

}

PRINTF("\r\n DSPI Master Sends/ Recevies Successfully");

// Wait for press any key.

PRINTF("\r\n Press any key to run again\n");

GETCHAR();

// Increase loop count to change transmit buffer.

loopCount++;

}

Re: FRDMk64 Interface with AT45DB161

Alice_Yang — Tue, 28 Jul 2015 11:32:32 GMT

Hello,

Hello sud,

"can i use same function for write and read data from flash.? " - yes.

And have you test your code ? What's the result ? Does it can not work well ?

Alice

Re: FRDMk64 Interface with AT45DB161

sudhakarp — Tue, 28 Jul 2015 15:44:45 GMT

hi,

when i read data flash am not getting 'A'character. i dnt know why..?

that why i asked when reading from data flash which buffer we want to use? receiveBuffer or sendbuffer?. can you check my code?

actually i configured

1)cpol=1, cphase=1

2)master mode

3)and baud rate 500khz

please give some idea.if you have any AT45DB161 flash code send me.

thanks and regards,

sudhakar p

Re: FRDMk64 Interface with AT45DB161

Alice_Yang — Wed, 29 Jul 2015 02:57:41 GMT

Hello sudhakar,

When you reading data from flash , use the receiveBuffer .

And sorry AT45DB161 is not the product of freescale , so i have not code .

I have checked your code , it is hard to fund problem only look at code , please run your project then check the related register:

Check the RXDATA register whether have data ;

Check the RFDF whether set to 1 ;

If the two register all not work well , please check the signal of flash send whether right .

Hope it helps

Alice

Re: FRDMk64 Interface with AT45DB161

sudhakarp — Wed, 29 Jul 2015 05:28:37 GMT

hi,

i dnt know how to check that register.

i have AT45db161 data flash working code with MCF52235. but in MCF52235 am not used MQX. using register only i did that project. can you give following register name for FRDMk64f120 controller? i gone through document also but am not sure about register. please MAP this register and send me.

this all register am used in MCF52235 so i need FRDM corresponding register, please dnt ignore i need some help

///////////////////////initialization code///////////////////////////////////////////

MCF_QSPI_QDLYR = 0;

MCF_QSPI_QIR = 0;

MCF_QSPI_QMR = (0

| MCF_QSPI_QMR_MSTR // Master mode

| MCF_QSPI_QMR_DOHIE // QSPI_DOUT high impedance if set

| MCF_QSPI_QMR_BITS(8) // Number of bits per trasmission

| MCF_QSPI_QMR_CPOL // Clock polarity

| MCF_QSPI_QMR_CPHA // Clock phase

| MCF_QSPI_QMR_BAUD(8)); // earlier 4 //Baud rate = fsys / (2 * QMR[BAUD])

MCF_QSPI_QDLYR = (0

| MCF_QSPI_QDLYR_QCD(0x1E) //Clock delay from start of CS 0x7F

| MCF_QSPI_QDLYR_DTL(0x02)); // Delay after transfer 0X7F

MCF_QSPI_QWR = (0

| MCF_QSPI_QWR_CSIV // QSPI_CS inactive level (active low)

| MCF_QSPI_QWR_ENDQP(0) // End of queue pointer

| MCF_QSPI_QWR_NEWQP(0)); // Start of queue pointer

MCF_QSPI_QAR = MCF_QSPI_QAR_CMD; // Point to command RAM

MCF_QSPI_QIR = (0);

////////////////////////////BUSY checking code////////////////

qdlyr = MCF_QSPI_QDLYR;

if (qdlyr & MCF_QSPI_QDLYR_SPE) // If QSPI is busy,

	return 1;	// return 1
else			// Otherwise,
	MCF_QSPI_QIR = MCF_QSPI_QIR_SPIF;
	return 0;

//////////////////////transmitting data///////////////////////////

MCF_QSPI_QWR = (uint16)(0

| MCF_QSPI_QWR_CSIV // QSPI_CS inactive level (active low)

| MCF_QSPI_QWR_ENDQP(count-1) // End of queue pointer

| MCF_QSPI_QWR_NEWQP(0)); // Start of queue pointer

MCF_QSPI_QAR = MCF_QSPI_QAR_CMD; // Point to command RAM

for (i=0; i<count; i++)

MCF_QSPI_QDR =0xFE00;

MCF_QSPI_QAR = MCF_QSPI_QAR_TRANS; // Point to tx data RAM

for (i=0; i<count; i++)

{

data = block[i];

MCF_QSPI_QDR = (uint16)MCF_QSPI_QDR_DATA(data); // Enter data

}

MCF_QSPI_QDLYR |= MCF_QSPI_QDLYR_SPE; // Set QSPI enable bit

////readind data from flash////////////////////////////////////////////////////////////////

for (i=0; i<16; i++)dummy_buff[i]=0;

MCF_QSPI_QAR = MCF_QSPI_QAR_RECV;

for (i=0; i<16; i++)dummy_buff[i]=MCF_QSPI_QDR;

return(dummy_buff[count-1]);

this code was working 100% in my previous project with MCF52235 but i struggling in FRDMk64. u just see both code and give some solution

Re: FRDMk64 Interface with AT45DB161

Alice_Yang — Wed, 29 Jul 2015 08:06:51 GMT

Hello

Please first check the two register ：

(1) When received data , we can check this register :

(2) Check the receive flag :

\(3) I have not been used the MCF52235 , and there have some different about spi register . please be care check the RM of k64 .

And please also be sue the correct of the hardware configuration . And i will also test the code on my side .

Alice

Re: FRDMk64 Interface with AT45DB161

sudhakarp — Thu, 30 Jul 2015 11:58:33 GMT

hi,

still i have problem.i tried to read status of the AT45DB161 flash. but i am getting 0xFF.

flash read status command :0xD7.

if you got Response : 0x80 (flash ok).

but am getting 0xFF. so using this command can you make code and send to me. i need how to send data and how to receive data code only. i think its easy for you. once you send 0xD7 command through SPI you will get 0x80 response from AT45DB161. so can you make code for this? because using your code i will correct my code and also i dnt know how to check SPI data received or not.

thanks and regards,

sudhakar p

Re: FRDMk64 Interface with AT45DB161

Alice_Yang — Mon, 03 Aug 2015 10:12:56 GMT

Hello P,

I have not the AT45DB161 chip, so i only test the demo code you mentioned , that under the KSDK 1.2 ,and it can work well.

And you side the SPI can received data , so maybe it is the problem of the AT45DB161 chip, please send other command to test , check what it send .

Alice

Re: FRDMk64 Interface with AT45DB161

sudhakarp — Tue, 04 Aug 2015 04:19:21 GMT

hi Alice,

thank you. i got solution. for AT45DB161 we want to give continuous chip-select. in example code that condition was false after i changed into true. now its working fine. thanks for your support.

thanks and regards,

sudhakar p