COG confusion
Beavis3215
Posts: 229
/* Fidget Spinner Motor
Auto time version
Pin 19 is on sensor input
Pin 18 is off sensor input
Pin 17 is magnet controller output
Pin 16 is timing light output
Pin 15 is timing advance input
Pin 14 is timing retard input
Pin 13-8 is binary timing output
*/
#include "simpletools.h" // Include simple tools
void button_time();
void time_it();
void display_rpm();
static volatile int delay, on_sensor, off_sensor, rpm; //all global
int main() // Main function
{
simpleterm_close();
clkset(0b01101111, 80000000);
cog_run(button_time,128); // Push button control
cog_run(time_it,128); // Times magnet on sensor to magnet off sensor
cog_run(display_rpm,128); // Displays RPM on 7 segment LEDs
on_sensor = 1 << 19;
off_sensor = 1 << 18;
int magnet = 1 << 17;
int t_light = 1 << 16;
DIRA &= ~(1 << 19);
DIRA &= ~(1 << 18);
DIRA |= (magnet);
DIRA |= (t_light);
while(1)
{
if ((INA & on_sensor) == on_sensor) // If on sensor high
{
OUTA |= (magnet); // Turn magnet on
}
if ((INA & off_sensor) == off_sensor) // If off sensor high
{
pause(delay); // Delay is assigned in button_time
OUTA &= ~(magnet); // Turn magnet off
OUTA |= (t_light); // Timing light on
pause(1);
OUTA &= ~(t_light); // Timing light off
}
}
}
void button_time()
{
int lights = 0b111111 << 8; //Timing delay LED's
int advance = 1 << 15;
int retard = 1 << 14;
DIRA &= ~(advance);
DIRA &= ~(retard);
DIRA |= (lights);
int t = 20;
while(1)
{
if ((INA & retard) == retard) // If retard button high
{
t++ ;
if (t > 64) // Don't allow t to exceed 64
{
t = 64;
}
}
if ((INA & advance) == advance) // If advance button high
{
t-- ;
if (t < 1) // Keep t 1 or larger
{
t = 1;
}
}
delay = t; // Pass delay to main function
OUTA = (OUTA & ~(lights)) | (t << 8 ); // Put t value on output lights
pause(300);
}
}
void time_it()
{
unsigned int uS, t_initial, t_final;
int pass_number = 0;
int total_passes = 1;
int total = 0;
uS = CLKFREQ/1000000;
int elapsed;
//int rpm;
const int travel_frac = 9; // How many on-off travels on 360 degrees
int multiplier = 60000000/travel_frac;
//simpleterm_open();
while(1)
{
while(pass_number <= total_passes)
{
waitpeq(on_sensor, on_sensor); // Wait for on sensor high
t_initial = CNT;
waitpeq(off_sensor, off_sensor); // Wait for off sensor high
t_final = CNT;
total = total + (t_final - t_initial); // Accumulate time for total amount of passes(in ticks)
pass_number++;
}
elapsed = (total / uS)/total_passes; // Calculate average pass time in uS
rpm = multiplier / elapsed;
//print("RPM = %d\n", rpm);
pass_number = 0;
total = 0;
}
}
void display_rpm()
{
int seven_seg = 0b1111111;
int driver = 0b1111 << 20;
DIRA |= (seven_seg);
DIRA |= (driver);
int d[] = {0b0111111, 0b0000110, 0b1011011, 0b1001111, 0b1100110,
0b1101101, 0b1111101, 0b0000111, 0b1111111, 0b1100111};
while(1);
{
int thousands = (int)(rpm / 1000);
int hundreds = (int)((rpm - (thousands * 1000)) / 100);
int tens = (int)((rpm - (thousands * 1000) - (hundreds * 100)) / 10);
int ones = (int)(rpm - (thousands * 1000) - (hundreds * 100) - (tens * 10));
OUTA = (OUTA & ~ (seven_seg)) | d[thousands];
OUTA = (OUTA & ~ (driver)) | (0b1000 << 20);
pause(8);
OUTA = (OUTA & ~ (driver));
OUTA = (OUTA & ~ (seven_seg)) | d[hundreds];
OUTA = (OUTA & ~ (driver)) | (0b0100 << 20);
pause(8);
OUTA = (OUTA & ~ (driver));
OUTA = (OUTA & ~ (seven_seg)) | d[tens];
OUTA = (OUTA & ~ (driver)) | (0b0010 << 20);
pause(8);
OUTA = (OUTA & ~ (driver));
OUTA = (OUTA & ~ (seven_seg)) | d[ones];
OUTA = (OUTA & ~ (driver)) | (0b0001 << 20);
pause(8);
OUTA = (OUTA & ~ (driver));
}
}
Desired output: self turning fidget spinner with RPM reading on 4, 7 segment LEDs. Spinner timing controlled by 2 pushbuttons.In a previous version, display_rpm was incorporated into time_it. This worked but had problems with display blinking. LED display was dependent on spinner travel, but otherwise worked and gave correct output. In an attempt to fix this problem, I put display_rpm into its own COG. There seems to be no output now and I can't figure out why. When I say no output, the LED display is not on. I increased the pauses from 8 to 100 just to make sure that the output was not to fast to see.
Comments
#include "simpletools.h" void main() { int seven_seg = 0b1111111; int driver = 0b1111 << 20; DIRA |= (seven_seg); DIRA |= (driver); int d[] = {0b0111111, 0b0000110, 0b1011011, 0b1001111, 0b1100110, 0b1101101, 0b1111101, 0b0000111, 0b1111111, 0b1100111}; int rpm = 1234; while(1); { int thousands = (int)(rpm / 1000); int hundreds = (int)((rpm - (thousands * 1000)) / 100); int tens = (int)((rpm - (thousands * 1000) - (hundreds * 100)) / 10); int ones = (int)(rpm - (thousands * 1000) - (hundreds * 100) - (tens * 10)); OUTA = (OUTA & ~ (seven_seg)) | d[thousands]; OUTA = (OUTA & ~ (driver)) | (0b1000 << 20); pause(100); OUTA = (OUTA & ~ (driver)); OUTA = (OUTA & ~ (seven_seg)) | d[hundreds]; OUTA = (OUTA & ~ (driver)) | (0b0100 << 20); pause(100); OUTA = (OUTA & ~ (driver)); OUTA = (OUTA & ~ (seven_seg)) | d[tens]; OUTA = (OUTA & ~ (driver)) | (0b0010 << 20); pause(100); OUTA = (OUTA & ~ (driver)); OUTA = (OUTA & ~ (seven_seg)) | d[ones]; OUTA = (OUTA & ~ (driver)) | (0b0001 << 20); pause(100); OUTA = (OUTA & ~ (driver)); print("RPM = %d\n", rpm); } }I don't see why this doesn't work, doesn't even print RPM = on terminal.
while (1); { .. some stuff .. }The "some stuff" code that you think will be repeated will never be executed, because "while (1);" is an endless loop that does nothing. Removing the semicolon will help.