/* * File Name: BUFFER.h */ /*********************************************************************************************************************************** --------Truth Table for Quad 74126 BUFFER Chip---------- /***********************************************************************************************************************************/ /* En Input | Output #1 Output #2 Output #3 Output #4 1 1 | 1 1 1 1 Test 1 1 0 | 0 0 0 0 Test 2 0 1 | Z Z Z Z Test 3 0 0 | Z Z Z Z Test 4 */ boolean BUFFER() { /* ------------ */ int buf_A1=FP; /* 1A | \_/ | VCC */ int bufVcc=FP+1; int buf_B1=FP+2; /* 1B | | 4B */ int buf_A4=FP+3; int buf_R1=FP+4; /* 1Y | | 4A */ int buf_B4=FP+5; int buf_A2=FP+6; /* 2A | | 4Y */ int buf_R4=FP+7; int buf_B2=FP+8; /* 2B | | 3B */ int buf_A3=FP+9; int buf_R2=FP+10; /* 2Y | | 3A */ int buf_B3=FP+11; int bufGND=FP+12; /* GND | | 3Y */ int buf_R3=FP+13; /* ------------ */ int buf_G1; int buf_G2; int buf_G3; int buf_G4; boolean test1 = false; boolean test2 = false; boolean test3 = false; boolean test4 = false; pinMode(buf_A1, OUTPUT); pinMode(bufVcc, OUTPUT); pinMode(buf_B1, OUTPUT); pinMode(buf_B4, OUTPUT); pinMode(buf_R1, INPUT); pinMode(buf_A4, OUTPUT); pinMode(buf_A2, OUTPUT); pinMode(buf_R4, INPUT); pinMode(buf_B2, OUTPUT); pinMode(buf_B3, OUTPUT); pinMode(buf_R2, INPUT); pinMode(buf_A3, OUTPUT); pinMode(bufGND, OUTPUT); pinMode(buf_R3, INPUT); /********************************************************************************** ------------------------TEST 1------------------------ **********************************************************************************/ delay(readDelay); Serial.println("Testing with inputs 1 1"); digitalWrite(bufGND, LOW); digitalWrite(bufVcc, HIGH); delay(readDelay); digitalWrite(buf_A1, HIGH); digitalWrite(buf_B1, HIGH); digitalWrite(buf_A2, HIGH); digitalWrite(buf_B2, HIGH); digitalWrite(buf_A3, HIGH); digitalWrite(buf_B3, HIGH); digitalWrite(buf_A4, HIGH); digitalWrite(buf_B4, HIGH); delay(readDelay); buf_G1 = digitalRead(buf_R1); Serial.print("Gate 1: "); Serial.print(buf_G1); buf_G2 = digitalRead(buf_R2); Serial.print("\nGate 2: "); Serial.print(buf_G2); buf_G3 = digitalRead(buf_R3); Serial.print("\nGate 3: "); Serial.print(buf_G3); buf_G4 = digitalRead(buf_R4); Serial.print("\nGate 4: "); Serial.print(buf_G4); if(buf_G1 == 1 && buf_G2 == 1 && buf_G3 == 1 && buf_G4 == 1) { test1 = true; } Serial.print("\nResult: "); Serial.println(test1); /********************************************************************************** ------------------------TEST 2------------------------ **********************************************************************************/ Serial.println("Testing with inputs 1 0"); digitalWrite(bufGND, LOW); digitalWrite(bufVcc, HIGH); delay(readDelay); digitalWrite(buf_A1, HIGH); digitalWrite(buf_B1, LOW); digitalWrite(buf_A2, HIGH); digitalWrite(buf_B2, LOW); digitalWrite(buf_A3, HIGH); digitalWrite(buf_B3, LOW); digitalWrite(buf_A4, HIGH); digitalWrite(buf_B4, LOW); delay(readDelay); buf_G1 = digitalRead(buf_R1); Serial.print("Gate 1: "); Serial.print(buf_G1); buf_G2 = digitalRead(buf_R2); Serial.print("\nGate 2: "); Serial.print(buf_G2); buf_G3 = digitalRead(buf_R3); Serial.print("\nGate 3: "); Serial.print(buf_G3); buf_G4 = digitalRead(buf_R4); Serial.print("\nGate 4: "); Serial.print(buf_G4); if(buf_G1 == 0 && buf_G2 == 0 && buf_G3 == 0 && buf_G4 == 0) { test2 = true; } Serial.print("\nResult: "); Serial.println(test2); /********************************************************************************** ------------------------TEST 3------------------------ **********************************************************************************/ Serial.println("Testing with inputs 0 1"); digitalWrite(bufGND, LOW); digitalWrite(bufVcc, HIGH); delay(readDelay); digitalWrite(buf_A1, LOW); digitalWrite(buf_B1, HIGH); digitalWrite(buf_A2, LOW); digitalWrite(buf_B2, HIGH); digitalWrite(buf_A3, LOW); digitalWrite(buf_B3, HIGH); digitalWrite(buf_A4, LOW); digitalWrite(buf_B4, HIGH); delay(readDelay); // Put 0 onto floating output nodes. Otherwise stray voltage can be read as high. pinMode(buf_R1, OUTPUT); pinMode(buf_R2, OUTPUT); pinMode(buf_R3, OUTPUT); pinMode(buf_R4, OUTPUT); digitalWrite(buf_R1, LOW); digitalWrite(buf_R2, LOW); digitalWrite(buf_R3, LOW); digitalWrite(buf_R4, LOW); delay(readDelay); // Reset buffer outputs to inputs to read voltages. pinMode(buf_R1, INPUT); pinMode(buf_R2, INPUT); pinMode(buf_R3, INPUT); pinMode(buf_R4, INPUT); buf_G1 = digitalRead(buf_R1); Serial.print("Gate 1: "); Serial.print(buf_G1); buf_G2 = digitalRead(buf_R2); Serial.print("\nGate 2: "); Serial.print(buf_G2); buf_G3 = digitalRead(buf_R3); Serial.print("\nGate 3: "); Serial.print(buf_G3); buf_G4 = digitalRead(buf_R4); Serial.print("\nGate 4: "); Serial.print(buf_G4); if(buf_G1 == 0 && buf_G2 == 0 && buf_G3 == 0 && buf_G4 == 0) { test3 = true; } Serial.print("\nResult: "); Serial.println(test3); /********************************************************************************** ------------------------TEST 4------------------------ **********************************************************************************/ Serial.println("Testing with inputs 0 0"); digitalWrite(bufGND, LOW); digitalWrite(bufVcc, HIGH); delay(readDelay); digitalWrite(buf_A1, LOW); digitalWrite(buf_B1, LOW); digitalWrite(buf_A2, LOW); digitalWrite(buf_B2, LOW); digitalWrite(buf_A3, LOW); digitalWrite(buf_B3, LOW); digitalWrite(buf_A4, LOW); digitalWrite(buf_B4, LOW); delay(readDelay); // Put 0 onto floating output nodes. Otherwise stray voltage can be read as high. pinMode(buf_R1, OUTPUT); pinMode(buf_R2, OUTPUT); pinMode(buf_R3, OUTPUT); pinMode(buf_R4, OUTPUT); digitalWrite(buf_R1, LOW); digitalWrite(buf_R2, LOW); digitalWrite(buf_R3, LOW); digitalWrite(buf_R4, LOW); delay(readDelay); // Reset buffer outputs to inputs to read voltages. pinMode(buf_R1, INPUT); pinMode(buf_R2, INPUT); pinMode(buf_R3, INPUT); pinMode(buf_R4, INPUT); buf_G1 = digitalRead(buf_R1); Serial.print("Gate 1: "); Serial.print(buf_G1); buf_G2 = digitalRead(buf_R2); Serial.print("\nGate 2: "); Serial.print(buf_G2); buf_G3 = digitalRead(buf_R3); Serial.print("\nGate 3: "); Serial.print(buf_G3); buf_G4 = digitalRead(buf_R4); Serial.print("\nGate 4: "); Serial.print(buf_G4); if(buf_G1 == 0 && buf_G2 == 0 && buf_G3 == 0 && buf_G4 == 0) { test4 = true; } Serial.print("\nResult: "); Serial.println(test4); /********************************************************************************** ------------------------BUFFER RESULTS------------------------ **********************************************************************************/ if(test1 == true && test2 == true && test3 == true && test4 == true) { test1 = test2 = test3 = test4 = false; return 1; } else { test1 = test2 = test3 = test4 = false; return 0; } }