ooHoverboardFirmware

object oriented hoverboard firmware

original firmware hack https://github.com/NiklasFauth/hoverboard-firmware-hack modified to conpile as c++ code :-)

main.c contains test code:

class Point {
public:
    int x, y;

    Point (int c1, int c2) { x = c1; y = c2;}
    Point& operator=(Point rhs) {
        x = rhs.x; y = rhs.y;
        return *this;
    }
};

class Complex : public Point {
  private: 
    int &real, &imag;
  public: 
    Complex(int r, int i) : Point (r, i), real (x), imag (y) 
    {

    }

};

You can compile this repo with my online compiler https://pionierland.de/hoverhack/index.php

But nothing happens when you flash the firmware onto the hoverboard controller :-/

Ideas welcome !

changes in Makefile

LIBS = -lc -lc -lrdimon -lnosys #ROBO

CC = $(PREFIX)g++

AS = $(PREFIX)g++ -x assembler-with-cpp

main.c

int abs(int i)  //ROBO
{
    if (i<0) return -i;
    return i;
};

and three times HAL_GPIO_WritePin(OFF_PORT, OFF_PIN,(GPIO_PinState) 0); //ROBO

setup.c

extern UART_HandleTypeDef huart2;   //ROBO
extern DMA_HandleTypeDef hdma_i2c2_rx;  //ROBO
extern DMA_HandleTypeDef hdma_i2c2_tx;  //ROBO

control.c

extern DMA_HandleTypeDef hdma_i2c2_rx;  //ROBO
extern DMA_HandleTypeDef hdma_i2c2_tx;  //ROBO

comms.c

extern UART_HandleTypeDef huart2;   //ROBO

char uart_buf[100]; //ROBO volatile 
int16_t ch_buf[8];  //ROBO volatile 

setup.h

void setScopeChannel(uint8_t ch, int16_t val);
void consoleScope();

i only had to add the extern and remove the volatile Don't really know what the extern does and am not really happy to have removed the volatile.

binary sizes:

 hover_c++.bin 23.296 bytes
 hover_c.bin 18.260 bytes

The flash size of the stm32f103xe is 512 kB :-)