libs/RFID.MFRC522
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Merge pull request #203 from gpancot/master

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Thank you @gpancot 
try to avoid spourious interrupt
This commit is contained in:
Miki Balboa
2016-04-15 13:52:36 -07:00
parent 55feec4399 3503a149e2
commit 4dd8522a40
1 changed files with 6 additions and 4 deletions
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8
examples/MinimalInterrupt/MinimalInterrupt.ino
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@@ -72,12 +72,12 @@ void setup() {
/*Activate the interrupt*/ /*Activate the interrupt*/
attachInterrupt(digitalPinToInterrupt(IRQ_PIN), readCard, FALLING); attachInterrupt(digitalPinToInterrupt(IRQ_PIN), readCard, FALLING);
Serial.println("End setup");
do{ //clear a spourious interrupt at start do{ //clear a spourious interrupt at start
; ;
}while(!bNewInt); }while(!bNewInt);
bNewInt = false; bNewInt = false;
Serial.println("End setup");
} }
/** /**
@@ -86,7 +86,6 @@ void setup() {
void loop() { void loop() {
if(bNewInt){ //new read interrupt if(bNewInt){ //new read interrupt
bNewInt = false;
Serial.print("Interrupt. "); Serial.print("Interrupt. ");
mfrc522.PICC_ReadCardSerial(); //read the tag data mfrc522.PICC_ReadCardSerial(); //read the tag data
// Show some details of the PICC (that is: the tag/card) // Show some details of the PICC (that is: the tag/card)
@@ -95,6 +94,8 @@ void loop() {
Serial.println(); Serial.println();
clearInt(mfrc522); clearInt(mfrc522);
mfrc522.PICC_HaltA();
bNewInt = false;
} }
// The receiving block needs regular retriggering (tell the tag it should transmit??) // The receiving block needs regular retriggering (tell the tag it should transmit??)
@@ -135,3 +136,4 @@ void clearInt(MFRC522 mfrc522){
mfrc522.PCD_WriteRegister(mfrc522.ComIrqReg,0x7F); mfrc522.PCD_WriteRegister(mfrc522.ComIrqReg,0x7F);
} }