topic Re: EEPROM MQX example code for READ AND WRITE data in MQX Software Solutions

EEPROM MQX example code for READ AND WRITE data

sudhakarp — Wed, 29 Apr 2015 04:32:11 GMT

Hi,

i need EEPROM example code for FRDMK64f120 controller. am using KDS 2.0 and KSDK 1.1.0 example. so how to write and read

data from EERPOM.

thanks and regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

DavidS — Wed, 29 Apr 2015 13:43:02 GMT

Hi Sudhakar,

Please review following example:

C:\Freescale\KSDK_1.1.0\demos\i2c_rtos\src

It contains master and slave i2c code. I'm assuming your eeprom device has i2c interface. Correct?

If yes, then you need to reference master i2c code.

Project locations:

C:\Freescale\KSDK_1.1.0\demos\i2c_rtos\i2c_rtos_mqx\kds\frdmk64f

Regards,

David

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Mon, 04 May 2015 07:31:22 GMT

Hi David,

i want to store some data into NVM. but FRDMK64FN1MOVDC12 does not have EEPROM. so i planned to store data into flash memory. so i tried following method but i am getting error message.

char data[]="hi";

destination = flashSSDConfig.PFlashBase + PFLASH_IFR; /* Start address of Program Once Field */

ret = FlashProgram(&flashSSDConfig, destination, sizeof(data), data, g_FlashLaunchCommand);

if (FTFx_OK != ret)

{

ErrorTrap(ret);

}

can you give any idea to write data into the internal FLASh.

actually i want to store one "structure" into the flash. like.,

struct config_params{

uint32_t localipaddr; //

uint32_t localnetmask; //

uint32_t gatewayaddr; //

uint8_t baudrate; //

uint8_t baudrate1; //

uint8_t dataparams; //

uint8_t dataparams1; //

};

give some example for "READ AND WRITE" data into the Flash.

thanks and regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Mon, 04 May 2015 13:10:51 GMT

hi David,

i tried this method, here i am not getting any error, but whatever data i written into the flash that data i am not getting its displaying some other data,

PROGRAM:

uint8_t sudha_data[100]="write data";

destination = flashSSDConfig.PFlashBase + (flashSSDConfig.PFlashSize - 6*FTFx_PSECTOR_SIZE);

ret = FlashProgram(&flashSSDConfig,destination,80,sudha_data, g_FlashLaunchCommand);

if (FTFx_OK != ret)

{

ErrorTrap(ret);

}

/* Read on P-Flash */

destination = flashSSDConfig.PFlashBase + (flashSSDConfig.PFlashSize - 6*FTFx_PSECTOR_SIZE);

ret = FlashReadOnce(&flashSSDConfig, destination, sudha_data, g_FlashLaunchCommand);

if (FTFx_OK != ret)

{

ErrorTrap(ret);

}

/* Message to user */

p_data = (uint32_t *)&sudha_data;

printf("\n\n\r---->Reading flash IFR @ location 0x%x: 0x%x", (unsigned int)destination, (unsigned int)(*p_data));

please give some solution for this..

Re: EEPROM MQX example code for READ AND WRITE data

DavidS — Mon, 04 May 2015 17:50:18 GMT

Hi Sudhakar,

Please review the flash example code:

C:\Freescale\KSDK_1.1.0\demos\flash_demo\src

Regards,

David

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Tue, 05 May 2015 04:27:15 GMT

Hello David,

using that flash demo code only i edited above code. in flash example project there is no flash write operation API function. i want to write 4KB data into flash and again i want to READ that data. can you give solution for this..? could you tell which function i want to use..? can you give simple example code for this... just see my code also whatever previously i posted. and give some solution for this.

Thanks and regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Thu, 07 May 2015 11:48:32 GMT

hi David,

i am waiting for your reply..

is possible or not.? minimum 2kb data i want to write into internal flash and i want to read.

give some idea. i saw example code also but that one was not working. i mean i am doing some mistake i dnt know exact.

i tried both function

WRITE OPERATION:

1) ret = FlashProgram(&flashSSDConfig, destination, size, program_buffer, g_FlashLaunchCommand);

2)ret = FlashProgramOnce(&flashSSDConfig,0x2,buff_data, g_FlashLaunchCommand);

READ OPERATION:

ret = FlashReadResource(&flashSSDConfig,destination,sudha_data,0x0, g_FlashLaunchCommand);

may be i am doing mistake in "destination address". so can you edit code like 2kb data WRITE and READ from flash..

Thanks and regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

DavidS — Thu, 07 May 2015 18:49:52 GMT

Hi Sudhakar,

I think you are heading in the right direction but...

Why are you trying to write to the Flash IFR Register?

Once you issue the FlashProgram(); operation you should be able to read the Flash memory directly and not have to use a Flash Driver function call.

In the flash example code once I step over the following call (

result = FlashProgram(&flashSSDConfig, destAdrss, BUFFER_SIZE_BYTE, \

buffer, g_FlashLaunchCommand);

), I can see the Memory window contents change from all F's to the programmed values shown below.

Please note that KDS/KSDK updates have been posted and I'm now using it.

Reference: New Kinetis Design Studio V3.0.0 available

Regards,

David

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Fri, 08 May 2015 11:43:10 GMT

Hi David,

i need more information. using FlashProgram() i will write data its ok. but how i will read that data again..?

if i use

ret = FlashReadResource(&flashSSDConfig,destination,sudha_data,0x0, g_FlashLaunchCommand); its showing error "halted due to flash error". how can i read that data.

"i am writing some CONFIGURATION PARAMETER like ip address, gateway,baudrate etc., in power on condition user will configure this things using serial terminal, after user configuration i will write that data into internal flah.after device reset condition or next power on condition i want to read that data from internal flash,so user dnt want to configure again and again, whatever previous they configured i will use that parameter values "

thanks and regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

DavidS — Fri, 08 May 2015 13:45:39 GMT

Hi Sudhakar,

Once the flash is programmed/written, you can read it with a pointer.

Example code....haven't tested yet as short on time today.

void *dst;

uint32_t FlashValueAtFA00;

uint32_t FlashValueAtFA04;

*((uint32_t *)&dst) = 0xFA000;;

FlashValueAtFA00 = ((uint32_t *)dst);

FlashValueAtFA04 = ((uint32_t *)dst+4);

Regards,

David

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Mon, 11 May 2015 04:04:16 GMT

Hi DAVID,

here i am going to write one Structure. so i can't read long by long data. example

struct config_params

{

unsigned char ip_array[10];

unsigned char gateway_array[10];

unsigned char netmask_array[10];

}struct config_params exist_params;

struct config_params default_params =

{

"192.168.0.64", //ip

"192.168.0.210", , //gate

"255.255.255.0", //net

};

ret = FlashProgram(&flashSSDConfig, destination, sizeof(exist_params), \

&exist_params, g_FlashLaunchCommand);

DAVID is the above method will work for flash write..?

using"flashprogram" API i will write this data into flash. but how can i recover(READ) this data..?

thanks and regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Mon, 11 May 2015 06:54:08 GMT

Hi David,

i tried your code but i am not getting whatever data i wrote. i included that for your reference,

destination = flashSSDConfig.PFlashBase + (flashSSDConfig.PFlashSize - 6*FTFx_PSECTOR_SIZE);

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

{

program_buffer[i] = 'A';

}

size = BUFFER_SIZE_BYTE;

ret = FlashProgram(&flashSSDConfig, destination, size, \

program_buffer, g_FlashLaunchCommand);

if (FTFx_OK != ret)

{

ErrorTrap(ret);

}

printf("\n\r\tSuccessfully Programmed and Verified Location 0x%x -> 0x%x", (unsigned int)destination, (unsigned int)(destination + size));

/////////////////////////////////////////////////////////////////////////////////////

/* Read on P-Flash */

*((uint32_t *)&dst) = 0xFA000;;

FlashValueAtFA00 = ((uint32_t *)dst);

FlashValueAtFA04 = ((uint32_t *)dst+4);

printf("\n\rDATA 1=%d",FlashValueAtFA00);

printf("\n\rDATA 2=%d",FlashValueAtFA04);

This printf function i am getting

DATA 1=1024000

DATA 2=1024016

but i wrote "A" character at this address. can you please tell what mistake i did..?

thanks and regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

sudhakarp — Mon, 11 May 2015 07:21:37 GMT

Hi David,

i got it. Thank you very much. i used following step

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

unsigned char *dst;

dst=0xFA000;

printf("\n\rDATA start\n\r");

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

{

FlashValueAtFA00 = *dst;

printf("%d",FlashValueAtFA00);

dst++;

}

printf("\n\rDATA END\n\r");

regards,

sudhakar p

Re: EEPROM MQX example code for READ AND WRITE data

lwwl — Tue, 04 Jul 2017 06:03:16 GMT

I have same question,thanks.

Re: EEPROM MQX example code for READ AND WRITE data

Caro-Kann — Thu, 17 Jun 2021 13:40:19 GMT

I would like to know how I can write and read an integer (uint32) in the FLASH memory of the FRDM K64 board?

I saw the example in [KDSK_1.2.0\examples\frdmk64\driver_examples\flash\mdk\flash_example_uvprojx] and it works fine.

However, I would like to do the same task using MQX. Anyone would have any ideas. Or where can I find some example with MQX?

Re: EEPROM MQX example code for READ AND WRITE data

Meher_Vanukuri — Tue, 27 Dec 2022 06:53:36 GMT

Hi,

I would like to know EEPROM example code for MIMXRT1176 for cm4 and cm7. I am using LPCXpresso54628 EEPROM code as an example. So how to read and write data from/to EERPOM.

regards,

Meher V