# Classic Snake game for the STM32 board
## Hardware prerequisities
* stm32duino (should work on generic Arduino boards)
* Philips PCD8544 (Nokia 3310) LCD

## Software prerequisities
* Arduino Software
* [Arduino Core for STM32](https://github.com/balux33/Arduino_STM32)
* [Adafruit PCD8544 Library](https://github.com/adafruit/Adafruit-PCD8544-Nokia-5110-LCD-library)
* [Adafruit GFX Library](https://github.com/adafruit/Adafruit-GFX-Library)
* [SimpleTimer Library for Arduino](https://playground.arduino.cc/Code/SimpleTimer#Download)
* [Standard C++ for Arduino](https://github.com/maniacbug/StandardCplusplus)

## Building and flashing
Just as with normal Arduino codes, build and flash it from the Arduino Software.
* Board: Generic STM32F103C series
* Variant: STM32F103C8 (20K RAM. 64K Flash)
* CPU Speed: 72MHz

## Note
If using a different board, then change the configuration and modify the pins accordingly.
For the STM32 board the following changes are necessary:

Adafruit_PCD8544.h:
```
#define PCD8544_SPI_CLOCK_DIV SPI_CLOCK_DIV4 -> #define PCD8544_SPI_CLOCK_DIV SPI_CLOCK_DIV8
```

```
#ifdef __SAM3X8E__
typedef volatile RwReg PortReg;
typedef uint8_t PortMask; -> typedef uint32_t PortMask;
#else
typedef volatile uint32_t PortReg;
typedef uint8_t PortMask; -> typedef uint32_t PortMask;
#endif
```