TWR-K80F150M : writing data duration into the sd card

[lacouturepatric]

Hello,

I bought a TWR-K80F150M board. I downloaded the SDK software (SDK_2.2_TWR-K80F150M.zip). My project is to store 4 bit data every 20 Mhz into a SD card.

I use the library middleware/fatfs_0.12b and flexio for the acquisition.

I want to measure the duration of the writing data into the sd card in order to know if all data will be stored.

Is there any functions to use for knowing the duration between the start and the end of the writing data into sd card(kinetis K80) ?

For Exemple, something like get_time :

Time1 = get_time

//  write function FatFs - Generic FAT file system module  R0.12c
error = f_write(&g_fileObject, g_bufferWrite, sizeof(g_bufferWrite), &bytesWritten);

Time2 = get_time

Thank you in advance,
Regards

[lacouturepatric]

Thank you for your help,

Regards

Patrice

[jingpan]

Hi Lacouture,

You can start a timer before writing, stop and read it after that. FTM_StartTimer() and FTM_StopTimer() should be useful to you. You can get the time from FTMx_CNT register.

Regards