void sample(uint32_t *s, RAND_CTX *rand_ctx) {
int i, j;
for (i = 0; i < 16; i++) {
uint64_t r = RANDOM64(rand_ctx);
for (j = 0; j < 64; j++) {
uint64_t rnd[3];
int32_t m;
RANDOM192(rnd, rand_ctx);
m = (r & 1);
r >>= 1;
m = 2 * m - 1;
s[i * 64 + j] = single_sample(rnd);
if (m == -1) {
s[i * 64 + j] = 0xFFFFFFFF - s[i * 64 + j];
}
}
}
}
void sample(uint32_t *s) {
RANDOM_VARS
int i, j;
for (i = 0; i < 16; i++) {
uint64_t r = RANDOM64;
for (j = 0; j < 64; j++) {
uint64_t rnd[3];
int32_t m;
RANDOM192(rnd);
m = (r & 1);
r >>= 1;
m = 2 * m - 1;
s[i * 64 + j] = single_sample(rnd);
if (m == -1) {
s[i * 64 + j] = 0xFFFFFFFF - s[i * 64 + j];
}
}
}
}
//run magnetometer
//read data from the magnetometer and print to terminal
int mag_take_data(char **argv,unsigned short argc) {
unsigned short single=0,gauss=0,addr=0x14;
unsigned char c,mag_addr=0x14;
long result[2];
float time=0;
int i,res;
MAGon();
//parse arguments
for(i=1; i<=argc; i++) {
if(!strcmp("single",argv[i])) {
single=1;
} else if(!strcmp("gauss",argv[i])) {
gauss=1;
} else if((addr=getI2C_addr(argv[i],0,magAddrSym))!=0xFF) {
mag_addr=addr;
} else {
printf("Error Unknown argument \'%s\'.\r\n",argv[i]);
return -1;
}
}
//run until abort is detected
do {
res=single_sample(mag_addr,result);
if(res!=0) {
printf("Error encountered. Aborting\r\n");
break;
}
if(gauss) {
printf("%f %f\r\n",ADCtoGauss(result[0])/2,ADCtoGauss(result[1])/2);
} else {
printf("%li %li\r\n",result[0],result[1]);
}
c=async_CheckKey();
} while(!(c==0x03 || c=='Q' || c=='q' || single||c==' '));
return 0;
MAGoff();
}
