Kinetis MicrocontrollersのトピックRe: TWR-K80F150M : writing data duration into the sd card

TWR-K80F150M : writing data duration into the sd card

lacouturepatric — Mon, 26 Jun 2017 15:36:52 GMT

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

Re: TWR-K80F150M : writing data duration into the sd card

jingpan — Tue, 27 Jun 2017 07:31:26 GMT

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

Re: TWR-K80F150M : writing data duration into the sd card

lacouturepatric — Wed, 28 Jun 2017 11:54:32 GMT

Thank you for your help,

Regards

Patrice