CodeWiki: DigitalSystems.CW2

Revision [375]

Most recent edit made on 2009-05-01 14:40:37 by cmantito [start/stop works, it counts all four digits and works.]

Additions:

Port 3 - in/out - buttons & speaker & CPLD control
sbit outAcknowledge = P3^7; out
void setupInputs();
void digitsCallback();
void controlCallback();

int modeState = 0;

setupInputs();

runningLoop();

outDisplay = tenSecs + 64;
outDisplay = seconds + 128;
outDisplay = tenths + 192;
outDisplay = hunths + 0;

P2 = 0x00000000;

void setupInputs() {

IT0 = 1; Set on falling edge.
IT1 = 1; Set on falling edge.
EX0 = 1; Enable external interrupt 0.
EX1 = 1; Enable external interrupt 1.
modeState = 0;
outAcknowledge = 0;

INTERRUPT CALLBACKS
void digitsCallback() interrupt 0 {

if(modeState

0){
seconds = inDigits & 0x0f;

}else if(modeState

1){

tenSecs = inDigits & 0x0f;

}else if(modeState

2){
hunths = inDigits & 0x0f;

}else if(modeState

3){

tenths = inDigits & 0x0f;

if(modeState < 3){

modeState;

}else{

modeState = 0;

outAcknowledge = 1;
outAcknowledge = 0;

void controlCallback() interrupt 2 {

TR0 =~ TR0;

Deletions:

sbit outStartStop = P1^1; we probably won't use this at all.
Port 3 - in/out - buttons & speaker
sbit btnReset = P3^2; in
sbit btnLap = P3^4; in
sbit spkrTick = P3^5; out
void buttonCallback();
int pulseCount = 0;

runningLoop();

if(pulseCount
0){
hunths = inDigits;
pulseCount;

}else if(pulseCount
1){
tenths = inDigits;
pulseCount;

}else if(pulseCount
2){
seconds = inDigits;
pulseCount;

}else if(pulseCount
3){
tenSecs = inDigits;
pulseCount = 0;

}
outDisplay = seconds;
void buttonCallback() {

Revision [371]

Edited on 2009-04-01 13:12:24 by cmantito [More test code. Timer is a bit quick, but overall roughly right.]

Additions:

TR0 = 0;

TF0 = 0;

Revision [369]

Edited on 2009-04-01 12:09:15 by cmantito [C in a test mode to count/disp secs only, pulsing is still 40ms.]

Additions:

#define inDigits P0
#define outDisplay P2

while(1){

if(pulseCount

0){
hunths = inDigits;
pulseCount;

}else if(pulseCount

1){

tenths = inDigits;
pulseCount;

}else if(pulseCount

2){
seconds = inDigits;
pulseCount;

}else if(pulseCount

3){

tenSecs = inDigits;
pulseCount = 0;

}
outDisplay = seconds;

Deletions:

sbit inDigits = P0;
sbit outDisplay = P2;

while(1);
if(pulseCount

0){
hunths = P0;
pulseCount;

}else if(pulseCount

1){

tenths = P0;
pulseCount;

}else if(pulseCount

2){
seconds = P0;
pulseCount;

}else if(pulseCount

3){

tenSecs = P0;
pulseCount = 0;

Revision [368]

Edited on 2009-03-25 12:58:40 by cmantito [added resetCPLD() so reset != 1 constantly. burned to chip.]

Additions:

sbit outReset = P1^1;
sbit outStartStop = P1^1; we probably won't use this at all.
void resetCPLD();

resetCPLD();
void resetCPLD(){

outReset = 1;
outReset = 0;

Deletions:

sbit outStartStop = P1^1;
sbit outReset = P1^2;

Revision [367]

Edited on 2009-03-25 12:13:39 by cmantito

Additions:

Deletions:

Revision [363]

Edited on 2009-03-25 12:08:12 by cmantito [minor spelling error fixed; simulates OK]

Additions:

void buttonCallback();

}else if(pulseCount

3){

void buttonCallback() {

Deletions:

void processButtons();
void processClock();

processButtons();
processClock();
}else if(pulsecount

3){

Revision [362]

Edited on 2009-03-18 14:05:23 by cmantito [Added variables/fixed signals, added multiplexing code. Added clock.]

Additions:

sbit inDigits = P0;
sbit outDisplay = P2;
/
DECLARE VARIABLES
/
int pulseCount = 0;
unsigned char hunths, tenths, seconds, tenSecs;

if(pulseCount

0){
hunths = P0;
pulseCount;

}else if(pulseCount

1){

tenths = P0;
pulseCount;

}else if(pulseCount

2){
seconds = P0;
pulseCount;

}else if(pulsecount

3){

tenSecs = P0;
pulseCount = 0;

}

Deletions:

sbit inClockA = P0^1;
sbit inClockB = P0^2;
sbit modeSigA = P0^6;
sbit modeSigB = P0^7;
sbit outDigits = P2;
sbit digitSelectA = P2^6;
sbit digitSelectB = P2^7;

Revision [358]

Edited on 2009-03-18 11:46:35 by cmantito

Additions:

Revision [357]

Edited on 2009-03-18 11:39:26 by cmantito [400hz clock w/intrpt. sub structure in place.]

Additions:

/
DECLARE SUBROUTINES
/
void setupTimer();
void runningLoop();
void timerCallback();
void processButtons();
void processClock();
void main() {

setupTimer();
runningLoop();

}
void runningLoop() {

processButtons();
processClock();

while(1);

}
void setupTimer() {

TMOD = 0x01; M0 = 1 (Timer mode 1 - 16 bit mode)
TL0 = 0xFF; 400Hz = 2304 delay count, 65535-2304 = 63231
TH0 = 0xF6; TH0 = 0xF6 :: TL0(0xFF) = 0xF6FF = 63231
ET0 = 1; T0 Interrupt enabled.
EA = 1; Interrupts enabled.
TR0 = 1; Begin timer.

return;

}
void timerCallback() interrupt 1 using 2 {

outClock =~ outClock; Invert the clock output pin.

}

Revision [353]

Edited on 2009-03-11 12:51:14 by cmantito

Additions:

/
PIN DEFINITIONS
/

Port 0 - in - in from CPLD
sbit inClockA = P0^1;
sbit inClockB = P0^2;
sbit modeSigA = P0^6;
sbit modeSigB = P0^7;

Port 1 - all out - out to CPLD
sbit outClock = P1^0;
sbit outStartStop = P1^1;
sbit outReset = P1^2;

Port 2 - all out - out to display
sbit outDigits = P2;
sbit digitSelectA = P2^6;
sbit digitSelectB = P2^7;

Port 3 - in/out - buttons & speaker
sbit btnReset = P3^2; in
sbit btnStartStop = P3^3; in
sbit btnLap = P3^4; in
sbit spkrTick = P3^5; out

PROGRAMME CODE

Deletions:

#define on 1
#define off 2

Revision [347]

The oldest known version of this page was edited on 2009-02-18 11:18:01 by cmantito

#include <reg66x.h>

#define on 1

#define off 2

Categories: CategoryUni