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voltage pin changed

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Stefan Ostermann
2023-10-31 19:48:05 +01:00
parent 9c4b1d4913
commit 4cb90a145f
3 changed files with 20 additions and 58 deletions
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README.md
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@@ -41,53 +41,8 @@ RST -> 33
```
#### Registers
#### RFID Chip Registers
```
Writing 0x7F to the "ComIEnReg" means the following:
Bit 7: IRqInv=0 - Interrupts are active high
Bit 6: TxIEn=1 - Transmitter interrupt is enabled
Bit 5: RxIEn=1 - Receive interrupt is enabled
Bit 4: IdleIEn=1 - Idle interrupt is enabled
Bit 3: HiAlertIEn=1 - "High Alert" interrupt is enabled
Bit 2: LoAlertIEn=1 - "Low Alert" interrupt is enabled
Bit 1: ErrIEn=1 - Error interrupt is enabled
Bit 0: TimerIEn=1 - Timer interrupt is enabled
The bits in the register "ComIrqReg" have the following meaning:
Bit 7: Set1 - when written as 1, a bit value of 1 in bits 6-0 of the byte written set the corresponding register bit; when written as 0, bits 6-0 clear the corresponding register bit
Bit 6: TxIRq - Set when the last bit of Tx data has been sent
Bit 5: RxIRq - Set when the receiver detects the end of a valid data stream
Bit 4: IdleIRq - Set when the CommandReg changes the command field to the idle command
Bit 3: HiAlertIRq - Set when the Status1 register HiAlert bit is set
Bit 2: LoAlertIRq - Set when the Status1 register LoAlert bit is set
Bit 1: ErrIRq - Set when any bit in ErrorReg gets set
Bit 0: TimerIRq - Set when the TCounterValReg decrements to zero
Writing 0x14 to the "DivIEnReg" has the following meaning:
Bit 7: IRQPushPull=0 - IRQ is an open-drain output pin
Bit 6: reserved=0 - no known effect
Bit 5: reserved=0 - effect unknown
Bit 4: MfinActEn=1 - Allow the MFIN active interrupt request to trigger IRQ
Bit 3: reserved=0 - boundedly undefined
Bit 2: CRCIEn=1 - Permit the "DivIrqReg" bit CRCIRq to trigger IRQ
Bit 1: reserved=0 - do not set to 1 on pain of nothing
Bit 0: reserved=0 - has no purpose other than to confuse
The register "DivIrqReg" corresponds to "DivIrqEn", and has the following bit definitions:
Bit 7: Set2 - when written as 1, a bit value of 1 in bits 6-0 of the byte written set the corresponding register bit; when written as 0, bits 6-0 clear the corresponding register bit
Bit 6: reserved - don't ask
Bit 5: reserved - don't tell
Bit 4: MfinActIRq - MFIN is active
Bit 3: reserved - just leave it at zero and back away slowly
Bit 2: CRCIRq - when 1, the CalcCRC command is active and all data is processed
Bit 1: reserved - nothing to see here
Bit 0: reserved - are you feeling lucky, punk?
```
Interrupt method was not working because it seems reading a card does not trigger one.
See https://arduino.stackexchange.com/a/76285 and https://github.com/miguelbalboa/rfid/blob/master/examples/MinimalInterrupt/MinimalInterrupt.ino