int main(int argc, char **argv)
{
int i, j;
long tmp=0;
long tmp_avg=0;
long tmp_avg2;
long offset=0;
float filter_low, filter_high;
float spread_percent = SPREAD / 100.0 /2.0;
int b;
int nsamples=N_SAMPLES;
long samples[nsamples];
if (argc == 2) {
offset = atol(argv[1]);
}
setHighPri();
setup_io();
setup_gpio();
reset_converter();
j=0;
// get the dirty samples and average them
for(i=0;i<nsamples;i++) {
reset_converter();
samples[i] = read_cnt(0, argc);
tmp_avg += samples[i];
}
tmp_avg = tmp_avg / nsamples;
tmp_avg2 = 0;
j=0;
filter_low = (float) tmp_avg * (1.0 - spread_percent);
filter_high = (float) tmp_avg * (1.0 + spread_percent);
// printf("%d %d\n", (int) filter_low, (int) filter_high);
for(i=0;i<nsamples;i++) {
if ((samples[i] < filter_high && samples[i] > filter_low) ||
(samples[i] > filter_high && samples[i] < filter_low) ) {
tmp_avg2 += samples[i];
j++;
}
}
if (j == 0) {
printf("No data to consider\n");
exit(255);
}
printf("%d", (tmp_avg2 / j) - offset);
// printf("average within %f percent: %d from %d samples, original: %d\n", spread_percent*100, (tmp_avg2 / j) - offset, j, tmp_avg - offset);
unpull_pins();
restore_io();
}
int main(void)
{
printf ("Traffic light demo\n");
// Map the I/O sections
setup_io();
// Set 12 GPIO pins to output mode
setup_gpio();
GPIO_CLR0 = ALL_LEDS; //Turn all LEDs off
int i = 1;
while(i < 4) //Loop forever
{
printf("Traffic lights loop %d\n", i);
GPIO_SET0 = RED_NORTH | GRN_EAST; // Turn on North red. Turn on East green
long_wait(80); // Wait a bit
GPIO_CLR0 = ALL_LEDS; // Turn led off
GPIO_SET0 = RED_NORTH | YEL_EAST; // Turn on North red. Turn on East yellow
long_wait(20); // Wait a short bit
GPIO_CLR0 = ALL_LEDS; // Turn led off
GPIO_SET0 = RED_NORTH | RED_EAST;
long_wait(20);
GPIO_CLR0 = ALL_LEDS;
GPIO_SET0 = YEL_NORTH | RED_EAST;
long_wait(20);
GPIO_CLR0 = ALL_LEDS;
GPIO_SET0 = GRN_NORTH | RED_EAST;
long_wait(80);
GPIO_CLR0 = ALL_LEDS;
GPIO_SET0 = YEL_NORTH | RED_EAST;
long_wait(20);
GPIO_CLR0 = ALL_LEDS;
GPIO_SET0 = RED_NORTH | RED_EAST;
long_wait(20);
GPIO_CLR0 = ALL_LEDS;
GPIO_SET0 = RED_NORTH | YEL_EAST;
long_wait(20);
GPIO_CLR0 = ALL_LEDS;
i++;
}
GPIO_CLR0 = ALL_LEDS; //Turn all LEDs off
restore_io();
} // main
//
// Quick play all patterns
//
int main(void)
{ int p,r,last;
printf ("These are the connections for the LEDs test:\n");
printf ("jumpers in every out location (U3-out-B1, U3-out-B2, etc)\n");
printf ("GP25 in J2 --- B1 in J3\n");
printf ("GP24 in J2 --- B2 in J3\n");
printf ("GP23 in J2 --- B3 in J3\n");
printf ("GP22 in J2 --- B4 in J3\n");
printf ("GP21 in J2 --- B5 in J3\n");
printf ("GP18 in J2 --- B6 in J3\n");
printf ("GP17 in J2 --- B7 in J3\n");
printf ("GP11 in J2 --- B8 in J3\n");
printf ("GP10 in J2 --- B9 in J3\n");
printf ("GP9 in J2 --- B10 in J3\n");
printf ("GP8 in J2 --- B11 in J3\n");
printf ("GP7 in J2 --- B12 in J3\n");
printf ("(If you don't have enough straps and jumpers you can install\n");
printf ("just a few of them, then run again later with the next batch.)\n");
printf ("When ready hit enter.\n");
(void) getchar();
// Map the I/O sections
setup_io();
// Set 12 GPIO pins to output mode
setup_gpio();
/* for testing purposes...
GPIO_SET0 = 0x180;
(void) getchar();
GPIO_CLR0 = 0x100;
(void) getchar();
*/
for (p=0; p<3; p++)
{
// run pattern several times
start_new_pattern(p);
for (r=0; r<2; r++)
{ do {
last = led_step();
long_wait(3);
} while (!last);
} // run the pattern 2 times
} // loop over patterns
leds_off();
restore_io();
} // main
int main(void)
{ char key;
// Map the I/O sections
setup_io();
// Set ALL GPIO pins to the required mode
setup_gpio();
// Set up PWM module
setup_pwm();
// Setup the SPI
setup_spi();
// We don't touch the UART for now
//
// Here your main program can start
//
do {
printf(" l/L : Walk the LEDS\n");
printf(" b/B : Show buttons\n");
printf(" m/M : Control the motor\n");
printf(" a/A : Read the ADC values\n");
printf(" c/C : ADC => Motor\n");
printf("( D : Set the DAC values\n");
printf(" q/Q : Quit program\n");
key = getchar();
switch (key)
{
case 'l':
case 'L':
quick_led_demo();
break;
case 'b':
case 'B':
quick_buttons_demo();
break;
case 'm':
case 'M':
quick_pwm_demo();
break;
case 'a':
case 'A':
quick_adc_demo();
break;
case 'c':
case 'C':
adc_pwm_demo();
break;
case 0x0A:
case 0x0D:
// ignore CR/LF
break;
default:
printf("???\n");
}
} while (key!='q' && key!='Q');
// make sure everything is off!
leds_off();
pwm_off();
restore_io();
return 0;
} // main
//
// Do digital to analogue to digital conversion
//
void main(void)
{ int d, dac_val, v, s, i;
printf ("These are the connections for the digital to analogue to digital test:\n");
printf ("jumper connecting GP11 to SCLK\n");
printf ("jumper connecting GP10 to MOSI\n");
printf ("jumper connecting GP9 to MISO\n");
printf ("jumper connecting GP8 to CSnA\n");
printf ("jumper connecting GP7 to CSnB\n");
printf ("jumper connecting DA1 on J29 to AD0 on J28\n");
printf ("When ready hit enter.\n");
(void) getchar();
// Map the I/O sections
setup_io();
// activate SPI bus pins
setup_gpio();
// Setup SPI bus
setup_spi();
// The value returned by the A to D can jump around quite a bit, so
// simply printing out the value isn't very useful. The bar graph
// is better because this hides the noise in the signal.
printf ("dig ana\n");
for (d=0; d <= 256; d+= 32)
{
if (d == 256)
dac_val = 255 * 16;
else
dac_val = d * 16;
write_dac(1, dac_val);
v= read_adc(0);
// v should be in range 0-1023
// map to 0-63
s = v >> 4;
printf("%3x %04d ", dac_val, v);
// show horizontal bar
for (i = 0; i < s; i++)
putchar('#');
for (i = 0; i < 64 - s; i++)
putchar(' ');
putchar('\n');
short_wait();
} // repeated write/read
for (d=224; d >= 0; d-= 32)
{
dac_val = d * 16;
write_dac(1, dac_val);
v= read_adc(0);
// v should be in range 0-1023
// map to 0-63
s = v >> 4;
printf("%3x %04d ", dac_val, v);
// show horizontal bar
for (i = 0; i < s; i++)
putchar('#');
for (i = 0; i < 64 - s; i++)
putchar(' ');
putchar('\n');
short_wait();
} // repeated write/read
printf("\n");
restore_io();
} // main
