milan.rajik
Banned
I have to receive data from UART and turn on Relays but they are not functioning as expected. The relays turn ON and then turn OFF after 2 or 3 seconds.
Here is my Mega 2560 code. phasex, neurtralx are the relays.
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Now it is working for UNO. I modified the code for UNO R3. Now it only fires once on interrupt. How to clear the serial interrupt in Arduino?
Here is my Mega 2560 code. phasex, neurtralx are the relays.
Code C - [expand] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 #include <avr/interrupt.h> #include <avr/io.h> String inputString; boolean stringComplete = false; int phase1 = 22; int neutral1 = 23; int phase2 = 24; int neutral2 = 25; int phase3 = 26; int neutral3 = 27; const int analogInPin1 = A0; int sensorValue1 = 0; const int analogInPin2 = A1; int sensorValue2 = 0; const int analogInPin3 = A2; int sensorValue3 = 0; int led1 = 28; int led2 = 29; int led3 = 30; int PIR = 48; int BEEPER = 49; int emergencyStop = 42; int UartLed = 13; void setup() { pinMode(phase1, OUTPUT); pinMode(neutral1, OUTPUT); pinMode(phase2, OUTPUT); pinMode(neutral2, OUTPUT); pinMode(phase3, OUTPUT); pinMode(neutral3, OUTPUT); pinMode(BEEPER, OUTPUT); pinMode(PIR, INPUT); pinMode(led1, OUTPUT); pinMode(led2, OUTPUT); pinMode(led3, OUTPUT); pinMode(emergencyStop, INPUT); pinMode(UartLed, OUTPUT); digitalWrite(led1, LOW); digitalWrite(led2, LOW); digitalWrite(led3, LOW); digitalWrite(UartLed, LOW); digitalWrite(phase1, LOW); digitalWrite(phase2, LOW); digitalWrite(phase3, LOW); digitalWrite(neutral1, LOW); digitalWrite(neutral2, LOW); digitalWrite(neutral3, LOW); UBRR0H = 0; // Load upper 8-bits of the baud rate value into the high byte of the UBRR register UBRR0L = 8; // Load lower 8-bits of the baud rate value into the low byte of the UBRR register UCSR0C |= (1 << UCSZ00) | (1 << UCSZ10); // Use 8-bit character sizes UCSR0B |= (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0); // Turn on the transmission, reception, and Receive interrupt interrupts(); Serial.begin(9600); inputString.reserve(10); } void loop() { sensorValue1 = analogRead(analogInPin1); // map it to the range of the analog out: sensorValue1 = sensorValue1 / 2.046; sensorValue2 = analogRead(analogInPin2); // map it to the range of the analog out: sensorValue2 = sensorValue2 / 2.046; sensorValue3 = analogRead(analogInPin3); // map it to the range of the analog out: sensorValue3 = sensorValue3 / 2.046; Serial.println(sensorValue1); Serial.println(sensorValue2); Serial.println(sensorValue3); if(sensorValue1 >= 32.0) { digitalWrite(led1, HIGH); digitalWrite(phase1, LOW); digitalWrite(neutral1, LOW); } else if (sensorValue1 < 32.0) { digitalWrite(led1, LOW); } if(sensorValue2 >= 32.0) { digitalWrite(led2, HIGH); digitalWrite(phase2, LOW); digitalWrite(neutral2, LOW); } else if (sensorValue2 < 32.0) { digitalWrite(led2, LOW); } if(sensorValue3 >= 32.0) { digitalWrite(led3, HIGH); digitalWrite(phase3, LOW); digitalWrite(neutral3, LOW); } else if (sensorValue3 < 32.0) { digitalWrite(led3, LOW); } int reading = digitalRead(PIR); if(reading == HIGH) { beep(500); beep(500); beep(500); } int reading1 = digitalRead(emergencyStop); if(reading1 == HIGH) { digitalWrite(phase1, LOW); digitalWrite(neutral1, LOW); digitalWrite(phase2, LOW); digitalWrite(neutral2, LOW); digitalWrite(phase3, LOW); digitalWrite(neutral3, LOW); } if(stringComplete) { if(inputString == "1") { digitalWrite(phase1, HIGH); digitalWrite(neutral1, HIGH); delay(50); } else if(inputString == "2") { digitalWrite(phase1, LOW); digitalWrite(neutral1, LOW); delay(50); } else if(inputString == "3") { digitalWrite(phase2, HIGH); digitalWrite(neutral2, HIGH); delay(50); } else if(inputString == "4") { digitalWrite(phase2, LOW); digitalWrite(neutral2, LOW); delay(50); } else if(inputString == "5") { digitalWrite(phase3, HIGH); digitalWrite(neutral3, HIGH); delay(50); } else if(inputString == "6") { digitalWrite(phase3, LOW); digitalWrite(neutral3, LOW); delay(50); } digitalWrite(UartLed, HIGH); delay(300); digitalWrite(UartLed, LOW); delay(300); stringComplete = false; inputString = ""; digitalWrite(phase1, HIGH); delay(300); digitalWrite(phase1, LOW); delay(300); } } //ISR(USART0_RX_vect) { void serialEvent() { if (Serial.available()) { char inChar = (char)Serial.read(); if ((inChar == '\r') || (inChar == '\n')) { inputString += '\0'; stringComplete = true; } else inputString += inChar; } } void beep(unsigned char delayms) { analogWrite(BEEPER, 20); // Almost any value can be used except 0 and 255 // experiment to get the best tone delay(delayms); // wait for a delayms ms analogWrite(BEEPER, 0); // 0 turns it off delay(delayms); // wait for a delayms ms }
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Now it is working for UNO. I modified the code for UNO R3. Now it only fires once on interrupt. How to clear the serial interrupt in Arduino?