176 lines
3.8 KiB
C++
176 lines
3.8 KiB
C++
/*!
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ER1400.cpp
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v20210423: Initial version
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*/
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#include "ER1400.h"
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ER1400::ER1400(uint8_t clockPin, uint8_t c1Pin, uint8_t c2Pin, uint8_t c3Pin, uint8_t outPin, uint8_t inPin) {
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this->clockPin = clockPin;
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this->c1Pin = c1Pin;
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this->c2Pin = c2Pin;
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this->c3Pin = c3Pin;
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this->inPin = inPin;
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this->outPin = outPin;
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init();
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}
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void ER1400::init() {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 0);
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digitalWrite(c2Pin, 0);
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digitalWrite(c3Pin, 0);
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digitalWrite(outPin, 0);
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pinMode(clockPin, OUTPUT);
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pinMode(c1Pin, OUTPUT);
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pinMode(c2Pin, OUTPUT);
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pinMode(c3Pin, OUTPUT);
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pinMode(inPin, INPUT_PULLUP);
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pinMode(outPin, OUTPUT);
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}
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//readData
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int ER1400::readData(int adr) {
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acceptAddress (adr);
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read();
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return shiftDataOut();
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}
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//writeData
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void ER1400::writeData(int adr, int data) {
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acceptAddress(adr);
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erase();
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acceptData(data);
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write();
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}
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// STANDBY (C1: 0, C2: 0, C3: 0)
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void ER1400::standby() {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 0);
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digitalWrite(c2Pin, 0);
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digitalWrite(c3Pin, 0);
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digitalWrite(outPin, 0);
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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delayMicroseconds(delayvalue);
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}
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// ACCEPT ADDRESS (C1: 0, C2: 1, C3: 1)
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void ER1400::acceptAddress(int adr) {
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i;
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adr1 = 1 << (adr / 10);
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adr2 = 1 << (adr % 10);
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for (i = 0; i < 10; i++) {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 0);
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digitalWrite(c2Pin, 1);
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digitalWrite(c3Pin, 1);
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digitalWrite(outPin, !!(adr1 & (1 << (9 - i))));
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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delayMicroseconds(delayvalue);
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}
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for (i = 0; i < 10; i++) {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 0);
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digitalWrite(c2Pin, 1);
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digitalWrite(c3Pin, 1);
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digitalWrite(outPin, !!(adr2 & (1 << (9 - i))));
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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delayMicroseconds(delayvalue);
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}
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standby();
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}
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// READ (C1: 1, C2: 0, C3: 0)
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void ER1400::read() {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 1);
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digitalWrite(c2Pin, 0);
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digitalWrite(c3Pin, 0);
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digitalWrite(outPin, 0);
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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delayMicroseconds(delayvalue);
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standby();
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}
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// SHIFT DATA OUT (C1: 1, C2: 0, C3: 1)
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int ER1400::shiftDataOut() {
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x = 0;
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y = 0;
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for (i = 0; i < 14; i++) {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 1);
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digitalWrite(c2Pin, 0);
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digitalWrite(c3Pin, 1);
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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y = digitalRead(inPin);
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y = y << 14;
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x = x + y;
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x = x >> 1;
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delayMicroseconds(delayvalue);
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}
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standby();
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return x;
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}
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// ERASE (C1: 0, C2: 1, C3: 0)
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void ER1400::erase() {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 0);
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digitalWrite(c2Pin, 1);
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digitalWrite(c3Pin, 0);
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digitalWrite(outPin, 0);
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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delayMicroseconds(delayvalue);
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standby();
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}
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// ACCEPT DATA (C1: 1, C2: 1, C3: 1)
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void ER1400::acceptData(int data) {
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x = 0;
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y = 0;
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for (i = 0; i < 14; i++) {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 1);
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digitalWrite(c2Pin, 1);
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digitalWrite(c3Pin, 1);
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digitalWrite(outPin, map(bitRead(data, i), 0, 1, 1, 0));
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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delayMicroseconds(delayvalue);
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}
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standby();
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}
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// WRITE (C1: 1, C2: 1, C3: 0)
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void ER1400::write() {
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digitalWrite(clockPin, 0);
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digitalWrite(c1Pin, 1);
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digitalWrite(c2Pin, 1);
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digitalWrite(c3Pin, 0);
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digitalWrite(outPin, 0);
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delayMicroseconds(delayvalue);
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digitalWrite(clockPin, 1);
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delayMicroseconds(delayvalue);
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standby();
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}
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