Update README.md
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README.md
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README.md
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@ -32,13 +32,13 @@ This package contains all the currently available Arduboy libraries with changes
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| OLED CS | 12 PORTD6 | 6 PORTD7 | GND | 1/TXO PORTD3* |
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| OLED CS | 12 PORTD6 | 6 PORTD7 | GND | 1/TXO PORTD3* |
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| OLED DC | 4 PORTD4 | 4 PORTD4 | 4 PORTD4 | 4 PORTD4 |
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| OLED DC | 4 PORTD4 | 4 PORTD4 | 4 PORTD4 | 4 PORTD4 |
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| OLED RST | 6 PORTD7 | 12 PORTD6 | 6 PORTD7 | 2 PORTD1* |
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| OLED RST | 6 PORTD7 | 12 PORTD6 | 6 PORTD7 | 2 PORTD1* |
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| SPI SCK | 15 PORTB1 | 15 PORTB1 | PORTB 1 | PORTB1 |
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| SPI SCK | 15 PORTB1 | 15 PORTB1 | 15 PORTB 1 | 15 PORTB1 |
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| SPI MOSI | 16 PORTB2 | 16 PORTB2 | PORTB2 | PORTB2 |
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| SPI MOSI | 16 PORTB2 | 16 PORTB2 | 16 PORTB2 | 16 PORTB2 |
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| RGB LED RED | 10 PORTB6 | _ | 10 PORTB6 | 10 PORTB6 |
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| RGB LED RED | 10 PORTB6 | _ | 10 PORTB6 | 10 PORTB6 |
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| RGB LED GREEN | 11 PORTB7 | _ | - | 3 PORTD0* |
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| RGB LED GREEN | 11 PORTB7 | _ | - | 3 PORTD0* |
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| RGB LED BLUE | 9 PORTB5 | 17 PORTB0 | 9 PORTB5 | 9 PORTB5 |
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| RGB LED BLUE | 9 PORTB5 | 17 PORTB0 | 9 PORTB5 | 9 PORTB5 |
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| RxLED | PORTB0 | _ | PORTB0 | PORTB0 |
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| RxLED | 17 PORTB0 | _ | 17 PORTB0 | 17 PORTB0 |
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| TxLED | PORTD5 | _ | PORTD5 | PORTD5 |
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| TxLED | 30 PORTD5 | _ | 30 PORTD5 | 30 PORTD5 |
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| BUTTON UP | A0 PORTF7 | 8 PORTB4 | A0 PORTF7 | A0 PORTF7 |
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| BUTTON UP | A0 PORTF7 | 8 PORTB4 | A0 PORTF7 | A0 PORTF7 |
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| BUTTON RIGHT | A1 PORTF6 | 5 PORTC6 | A1 PORTF6 | A1 PORTF6 |
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| BUTTON RIGHT | A1 PORTF6 | 5 PORTC6 | A1 PORTF6 | A1 PORTF6 |
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| BUTTON LEFT | A2 PORTF5 | 9 PORTB5 | A2 PORTF5 | A2 PORTF5 |
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| BUTTON LEFT | A2 PORTF5 | 9 PORTB5 | A2 PORTF5 | A2 PORTF5 |
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@ -48,7 +48,7 @@ This package contains all the currently available Arduboy libraries with changes
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| SPEAKER PIN 1 | 5 PORTC6 | A2 PORTF5 | 5 PORTC6 | 5 PORTC6 |
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| SPEAKER PIN 1 | 5 PORTC6 | A2 PORTF5 | 5 PORTC6 | 5 PORTC6 |
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| SPEAKER PIN 2 | 13 PORTC7 | A3 PORTF4** | GND | 6 PORTD7* |
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| SPEAKER PIN 2 | 13 PORTC7 | A3 PORTF4** | GND | 6 PORTD7* |
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|----------------- | ---------------------- | ----------- | ---------------------------------- | --------------------------------- |
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|----------------- | ---------------------- | ----------- | ---------------------------------- | --------------------------------- |
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| CARD_CS | 0 PORTD2*** | - | - | 0 PORTD2*** |
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| CART_CS | 0 PORTD2*** | - | - | 0 PORTD2*** |
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| SPI MISO | 14 PORTB3*** | - | - | 14 PORTB3*** |
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| SPI MISO | 14 PORTB3*** | - | - | 14 PORTB3*** |
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Numbers before the portnames are Arduino assigned pin numbers.
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Numbers before the portnames are Arduino assigned pin numbers.
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@ -69,3 +69,36 @@ configured as an output.
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Future Flash cart support:
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Future Flash cart support:
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* 0 PORTD2 Future flash cart chip select
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* 0 PORTD2 Future flash cart chip select
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* 14 PORTB3 flash cart data in (MISO)
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* 14 PORTB3 flash cart data in (MISO)
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## (future) expansion connector
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An expansion connector can be added to modified or Homemade Arduboy in the form of a 12 pin female header with 0.1"pitch. which can be used for:
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* ICSP header for easy in circuit programming (updating bootloader)
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* flash cart slot
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* SD card adapter
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* infrared communications
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* multiplayer link
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* sensors
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### Expansion connector pinout
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( (Homemade) Arduboy facing top - front view female pinheader)
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| 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
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| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
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| TX | RX | SCL | SDA | NC | KEY | MISO| MOSI| CLK | RST | GND | Vcc |
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```text
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TX* - Serial Transmitter output
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RX - Serial Receiver input / Flash cart chip select
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SCL* - I2C/TWI serial clock I/O
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SDA* - I2C/TWI serial data I/O
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NC - Not connected (reserved for future use)
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KEY - Key pin. should be filled to block pin insertion (reverse insert protection)
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MISO - SPI/ICSP Master Input, Slave Output
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MOSI - SPI/ICSP Master Output, Slave Input
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CLK - SPI/ICSP clock
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RST - MCU/ICSP reset
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GND - Ground (0V)
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Vcc - 5V (~3.0V to ~4.1V on Arduboy)
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(*) Not available when using Pro Micro with Alternate Wiring
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```
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