libs/RFID.MFRC522
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replace UINT8_MAX by UNUSED_PIN

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Rotzbua
2018-04-13 13:11:21 +02:00
parent ff4f51f38b
commit 296772ea5f
1 changed files with 2 additions and 0 deletions
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src/MFRC522.h
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@@ -142,6 +142,8 @@ class MFRC522 {
public: public:
// Size of the MFRC522 FIFO // Size of the MFRC522 FIFO
static const byte FIFO_SIZE = 64; // The FIFO is 64 bytes. static const byte FIFO_SIZE = 64; // The FIFO is 64 bytes.
// Default value for unused pin
static constexpr uint8_t UNUSED_PIN = UINT8_MAX;
// MFRC522 registers. Described in chapter 9 of the datasheet. // MFRC522 registers. Described in chapter 9 of the datasheet.
// When using SPI all addresses are shifted one bit left in the "SPI address byte" (section 8.1.2.3) // When using SPI all addresses are shifted one bit left in the "SPI address byte" (section 8.1.2.3)