Donovan Lee / Mbed 2 deprecated StepLogger-Serial

Use serial port, not SD for datalogging.

Dependencies:   MMA8451Q_tb SDFileSystem mbed

Fork of StepLogger by Donovan Lee

main.cpp@0:75c161b9fc38, 2014-04-30 (annotated)

Committer:
donoman
Date:
Wed Apr 30 00:44:56 2014 +0000
Revision:
0:75c161b9fc38
Child:
1:03f0a25c5a86
First pass at datalogger --- still problems when writing to SD card due to buffer full causing delay.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
donoman 0:75c161b9fc38 1 #include "mbed.h"
donoman 0:75c161b9fc38 2 #include "MMA8451Q_tb.h"
donoman 0:75c161b9fc38 3 #include "SDFileSystem.h"
donoman 0:75c161b9fc38 4
donoman 0:75c161b9fc38 5
donoman 0:75c161b9fc38 6 #define MMA8451_I2C_ADDRESS (0x1d<<1)
donoman 0:75c161b9fc38 7 float acc_all[3];
donoman 0:75c161b9fc38 8 DigitalOut pinout(PTD4);
donoman 0:75c161b9fc38 9 Timer timer;
donoman 0:75c161b9fc38 10 Serial pc(USBTX, USBRX);
donoman 0:75c161b9fc38 11 SDFileSystem sd(PTD2, PTD3, PTD1, PTD0, "sd"); // (mosi, miso, sclok, cs, name)
donoman 0:75c161b9fc38 12
donoman 0:75c161b9fc38 13 int main(void) {
donoman 0:75c161b9fc38 14
donoman 0:75c161b9fc38 15 //Initialize
donoman 0:75c161b9fc38 16 int now; //used for timestamping
donoman 0:75c161b9fc38 17 timer.start();
donoman 0:75c161b9fc38 18 MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);
donoman 0:75c161b9fc38 19 printf("MMA8451 ID: %d\n", acc.getWhoAmI());
donoman 0:75c161b9fc38 20
donoman 0:75c161b9fc38 21 //Open File
donoman 0:75c161b9fc38 22 mkdir("/sd/mydir", 0777);
donoman 0:75c161b9fc38 23 FILE *fp = fopen("/sd/mydir/sdtest.txt", "a");
donoman 0:75c161b9fc38 24 if(fp == NULL) {
donoman 0:75c161b9fc38 25 error("Could not open file for write\n");
donoman 0:75c161b9fc38 26 }
donoman 0:75c161b9fc38 27
donoman 0:75c161b9fc38 28 for(int i=0; i<2000; i++) {
donoman 0:75c161b9fc38 29 pinout = !pinout;
donoman 0:75c161b9fc38 30 now = timer.read_ms();
donoman 0:75c161b9fc38 31 acc.fastRead(&acc_all[0]);
donoman 0:75c161b9fc38 32
donoman 0:75c161b9fc38 33 //Print to file
donoman 0:75c161b9fc38 34 fprintf(fp, "%d, %f,%f,%f\n",now, acc_all[0],acc_all[1],acc_all[2]);
donoman 0:75c161b9fc38 35
donoman 0:75c161b9fc38 36 }
donoman 0:75c161b9fc38 37 fclose(fp);
donoman 0:75c161b9fc38 38 }