99 lines
1.7 KiB
C++
99 lines
1.7 KiB
C++
#include "ROMWireProtocol.h"
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//#include <Arduino.h>
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void setCtrlPins() {
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pinMode(OE, OUTPUT);
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pinMode(PGM, OUTPUT);
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}
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void setAddrPinsOut() {
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for(int a = Addr0; a <= Addr18; a++) {
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pinMode(a, OUTPUT);
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digitalWrite(a, LOW);
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}
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}
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void setDataPinsOut() {
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for(int d = Data0; d <= Data7; d++) {
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pinMode(d, OUTPUT);
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digitalWrite(d, LOW);
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}
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}
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void setDataPinsIn() {
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for(int d = Data0; d <= Data7; d++) {
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digitalWrite(d, LOW);
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pinMode(d, INPUT);
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}
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}
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void setByte(byte out) {
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for(int i = 0; i < 8; i++) {
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digitalWrite(Data0 + i, bitRead(out,i));
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}
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}
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void setAddress(unsigned long addr) {
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for(int i = 0; i < 19; i++) {
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digitalWrite(Addr0 + i, bitRead(addr, i) );
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}
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}
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byte readByte() {
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byte temp_in = 0;
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for(int i = 0; i < 8; i++) {
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if(digitalRead(Data0 + i)) {
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bitSet(temp_in, i);
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}
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}
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return temp_in;
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}
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byte readData(unsigned long address) {
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byte temp_read;
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setByte(0);
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setDataPinsIn();
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digitalWrite(PGM, HIGH);
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digitalWrite(OE, HIGH);
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setAddress(address);
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delayMicroseconds(3);
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digitalWrite(OE, LOW);
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delayMicroseconds(3);
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temp_read = readByte();
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return temp_read;
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}
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void writeByte(byte data, unsigned long address) {
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setAddress(address);
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setByte(data);
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digitalWrite(OE, HIGH);
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digitalWrite(PGM, HIGH);
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delayMicroseconds(2);
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digitalWrite(PGM, LOW);
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delayMicroseconds(1);
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digitalWrite(PGM, HIGH);
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}
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void programData(byte data, unsigned long address) {
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setDataPinsOut();
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writeByte(0xAA, 0x5555);
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writeByte(0x55, 0x2AAA);
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writeByte(0xA0, 0x5555);
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writeByte(data, address);
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delayMicroseconds(30);
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//Serial.println(data, HEX);
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//Serial.println(address, HEX);
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} |