Electrical – Writing large volume of data to SD card

accelerometerarduinocmicrocontrollersd

I'm planning to make a data logger project with 3-axis sensor and SD card. I would like to store 3200 samples per every second on SD card. Currently I could able to store only 630 samples per second.

Someone told me writing in binary format is the solution.

Then I did accordingly.

fwrite(readings,sizeof(int16_t),6,logFile);

I can see .bin file with more data size compared to .txt or printf.

How can I get the readable ASCII format from .bin file?

I tried by using fread.

FILE *logFile = fopen(fileName,"rb");
int readings[6];
nr = fread(readings,sizeof(int16_t),6,logFile);

How can I see the readable ASCII data?.

Thank you.

Best Answer

how can I see the readable ASCII data?

use something similar to: 

printf( "\n"); 
for( int i=0; i<6; i++) 
{ 
    printf("%d ", readings[i]);
}
Related Topic