315 lines
7.6 KiB
C++
315 lines
7.6 KiB
C++
#include <Arduino.h>
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#define CHECK_BIT(var,pos) ((var) & (1<<(pos)))
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/*
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D7 - Ser (data)
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D5 - clock
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D1 - _OE
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D2 - latch
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D3 - _clear
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*/
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//Pins connected to Shift registers on own controller board
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#define PIN_DATA 13
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#define PIN_CLK 14
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#define PIN_OE 27 //active low
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#define PIN_LATCH 26
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//Pins connected to stuff on annax driver board
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#define PIN_DATA_DRVBRD 33
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#define PIN_CLK_DRVBRD 32
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//#define PIN_CLEAR 25 //active low
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#define PIN_DRIVE 25 //enables 12v to panels via transistor
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#define PIN_CLEAR 12 //connects CLEAR Pin from Annax board to GND (clears column)
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#define NUMPANELS 1
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//void sr_clear();
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void shiftOutSlow(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, uint8_t val);
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bool clearSelectedColumn();
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bool setSelectedDot();
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void selectColumnClear(uint8_t selcolumn);
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void selectColumnSet(uint8_t selcolumn);
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void selectColumn(uint8_t selcolumn, bool clear);
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bool HBridgeOK();
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void shiftData();
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unsigned long loopmillis=0;
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unsigned long last_update=0;
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#define UPDATE_INTERVAL 500
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void setup() {
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pinMode(PIN_DATA, OUTPUT);
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pinMode(PIN_CLK, OUTPUT);
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pinMode(PIN_OE, OUTPUT);
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pinMode(PIN_LATCH, OUTPUT);
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pinMode(PIN_CLEAR, OUTPUT);
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pinMode(PIN_DRIVE, OUTPUT);
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pinMode(PIN_DATA_DRVBRD, OUTPUT);
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pinMode(PIN_CLK_DRVBRD, OUTPUT);
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digitalWrite(PIN_OE, HIGH); //Active Low
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digitalWrite(PIN_LATCH, LOW);
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//sr_clear();
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digitalWrite(PIN_DRIVE, LOW);
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Serial.begin(115200);
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}
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int countz=0;
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//uint8_t rowA=0; //first shift register of own controller
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//uint8_t rowB=0; //second shift register of own controller
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uint16_t row;
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/*uint8_t colA=0;
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uint8_t colB=0;
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uint8_t colC=0;
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uint8_t colD=0;
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uint8_t colE=0;
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uint8_t colF=0;
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uint8_t colG=0;*/
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uint8_t col[7];
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void loop() {
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loopmillis = millis();
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digitalWrite(PIN_OE, LOW); //Active Low
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static bool init=false;
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if (!init) {
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delay(2000);
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Serial.println("Clearing Display");
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for (int l=0;l<25;l++) {
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selectColumnClear(l%25);
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shiftData();
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if (!clearSelectedColumn()) {
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Serial.println("Error clearing column!");
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}else{
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Serial.println("Cleared");
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}
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delay(50);
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}
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init=true;
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delay(1000);
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}
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if (loopmillis > last_update + UPDATE_INTERVAL)
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{
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Serial.print("count=");
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Serial.print(countz);Serial.print(": ");
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/*
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Serial.println("High");
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digitalWrite(PIN_DATA, HIGH);
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delay(1000);
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Serial.println("Low");
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digitalWrite(PIN_DATA, LOW);
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delay(1000);
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*/
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/*
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rowA=pow(2, (countz/2)%8);
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if (countz%2==0) {
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colA=0;
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}else{
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colA=64; //64=IL0
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}
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*/
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//setting colX to 128, 32, 8,2 (or a combination of), then appling 12V to driver and GND to Clear, clears these colums
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// this applies +12v to selected columns
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//setting colX to 64,16,4,1 (or a combination of), then setting row shift registers to some setting sets the selected dots
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// this applies GND to selected columns
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//reset pin on annax board input should be used (not pulled to gnd for a short time) after dots have been flipped (to disable potentially activated transistors)
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//selectColumnClear(countz%25);
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selectColumnSet((12+(countz/25))%25); //lower column number is on the left
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row=pow(2, countz%16); //low significant bits are lower rows (when connector at top)
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Serial.print("Row="); Serial.print(row); Serial.print(" Col=");
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for (uint8_t i=0;i<7;i++) {
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Serial.print(","); Serial.print(col[i]);
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}
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Serial.println();
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//reset pin on ribbon cable high (12Vpullup/open), then low (via Transistor)
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shiftData();
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setSelectedDot();
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/*if (!clearSelectedColumn()) {
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Serial.println("Error clearing column!");
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}else{
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Serial.println("Cleared");
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}*/
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last_update=loopmillis;
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countz++;
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}
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}
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//
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void shiftOutSlow(uint8_t dataPin, uint8_t clockPin, uint8_t bitOrder, uint8_t val)
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{
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uint8_t i;
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for (i = 0; i < 8; i++) {
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if (bitOrder == LSBFIRST)
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digitalWrite(dataPin, !!(val & (1 << i)));
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else
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digitalWrite(dataPin, !!(val & (1 << (7 - i))));
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delayMicroseconds(100);
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digitalWrite(clockPin, HIGH);
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delayMicroseconds(100);
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digitalWrite(clockPin, LOW);
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delayMicroseconds(100);
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}
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}
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void selectColumnClear(uint8_t selcolumn) {
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selectColumn(selcolumn, true);
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}
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void selectColumnSet(uint8_t selcolumn) {
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selectColumn(selcolumn, false);
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}
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void selectColumn(uint8_t selcolumn, bool clear) {
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uint8_t sc_bit=3-(selcolumn%4); //each two shift registers control four columns
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uint8_t sc_byte=selcolumn/4;
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for (uint8_t i=0;i<7;i++) {
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col[i]=0;
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}
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col[sc_byte]=pow(2, (sc_bit*2+clear)); // possible numbers for clear=false: 1,4,16,64
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/*
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if (!clear) { //when setting a dot set all other columns to 12v (to avoid ghost flipping)
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for (uint8_t i=0;i<7;i++) {
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col[i]+=2+8+32+128; //set to +12v
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}
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col[sc_byte]-=pow(2, (sc_bit*2+1)); //avoid short circuit on H-bridge
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}
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*/
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}
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bool clearSelectedColumn() {
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//Clear Columns
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if (row!=0) {
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return 0; //error. row is selected (short circuit!)
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}
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for (uint8_t cc=0;cc<7;cc++) {
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//Serial.print("checking cc="); Serial.println(cc);
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for (uint8_t i=0;i<8;i+=2) {
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if (CHECK_BIT(col[cc],i)) {
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Serial.print("Error on bit ");
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Serial.print(i); Serial.print(" col="); Serial.println(cc);
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return 0; //a column is set to ground (should not be set for clear column)
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}
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}
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}
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digitalWrite(PIN_DRIVE, HIGH);
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digitalWrite(PIN_CLEAR, HIGH);
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delay(50);
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digitalWrite(PIN_CLEAR, LOW);
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digitalWrite(PIN_DRIVE, LOW);
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return 1;
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}
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bool setSelectedDot() {
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/*for (uint8_t cc=0;cc<7;cc++) {
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//Serial.print("checking cc="); Serial.println(cc);
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for (uint8_t i=1;i<8;i+=2) {
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if (CHECK_BIT(col[cc],i)) {
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Serial.print("Error on bit ");
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Serial.print(i); Serial.print(" col="); Serial.println(cc);
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return 0; //a column is set to ground (should not be set for clear column)
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}
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}
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}*/
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if (!HBridgeOK) {
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return 0;
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}
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digitalWrite(PIN_DRIVE, HIGH);
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delay(10);
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digitalWrite(PIN_DRIVE, LOW);
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return 1;
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}
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bool HBridgeOK() {
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for (uint8_t cc=0;cc<7;cc++) {
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//Serial.print("checking cc="); Serial.println(cc);
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for (uint8_t i=0;i<8;i+=2) {
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if (CHECK_BIT(col[cc],i) && CHECK_BIT(col[cc],i+1)) {
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Serial.print("Short circuit on bit ");
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Serial.print(i); Serial.print(" col="); Serial.println(cc);
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return 0; //a column is set to ground (should not be set for clear column)
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}
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}
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}
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return 1;
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}
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void shiftData() { //send out all data to shift registers
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//Select Columns via Shift registers
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for (uint8_t i=0;i<7;i++) {
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shiftOutSlow(PIN_DATA_DRVBRD, PIN_CLK_DRVBRD, LSBFIRST, col[6-i]);
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}
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//select Rows via shift registers on own controller board
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shiftOutSlow(PIN_DATA, PIN_CLK, LSBFIRST, row%256);
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shiftOutSlow(PIN_DATA, PIN_CLK, LSBFIRST, row/256); //LSBFIRST= LSB is QH, bit 8 is QA.
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digitalWrite(PIN_LATCH, HIGH);
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delayMicroseconds(100);
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digitalWrite(PIN_LATCH, LOW);
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} |