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Add MFRC522 support for customizable SPI pins #18711

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Add MFRC522 support for customizable SPI pins #18711

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a263d22
Added option to use SPI pins as configured in WebUI to xsns_80_mfrc52…
AlKi May 22, 2023
1576352
Added RC522_USE_CONFIGURED_SPI_PINS and description to my_user_config.h
AlKi May 22, 2023
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1 change: 1 addition & 0 deletions tasmota/my_user_config.h
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Original file line number Diff line number Diff line change
Expand Up @@ -773,6 +773,7 @@
// #define USE_DISPLAY_ST7789 // [DisplayModel 12] Enable ST7789 module
// #define USE_DISPLAY_SSD1331 // [DisplayModel 14] Enable SSD1331 module
// #define USE_RC522 // Add support for MFRC522 13.56Mhz Rfid reader (+6k code)
// #define RC522_USE_CONFIGURED_SPI_PINS // Use the SPI 1 interface as configured via the template for communication with RC522
// #define USE_RC522_DATA_FUNCTION // Add support for reading data block content (+0k4 code)
// #define USE_RC522_TYPE_INFORMATION // Add support for showing card type (+0k4 code)
// #define USE_MCP2515 // Add support for can bus using MCP2515 (+7k code)
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4 changes: 4 additions & 0 deletions tasmota/tasmota_xsns_sensor/xsns_80_mfrc522.ino
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Expand Up @@ -100,7 +100,11 @@ void RC522ScanForTag(void) {
void RC522Init(void) {
if (PinUsed(GPIO_RC522_CS) && PinUsed(GPIO_RC522_RST) && TasmotaGlobal.spi_enabled) {
Mfrc522 = new MFRC522(Pin(GPIO_RC522_CS), Pin(GPIO_RC522_RST));
#ifdef RC522_USE_CONFIGURED_SPI_PINS
SPI.begin(Pin(GPIO_SPI_CLK), Pin(GPIO_SPI_MISO), Pin(GPIO_SPI_MOSI));
#else
SPI.begin();
#endif
Mfrc522->PCD_Init();
// if (Mfrc522->PCD_PerformSelfTest()) { // Saves 0k5 code
uint8_t v = Mfrc522->PCD_ReadRegister(Mfrc522->VersionReg);
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