extern unsigned char car_doors1;

typedef struct {

  unsigned FrontLeftDoor:1;

  unsigned FrontRightDoor:1;

  unsigned ChargePort:1;

  unsigned PilotSignal:1;

  unsigned Charging:1;

  unsigned :1;

  unsigned HandBrake:1;

  unsigned CarON:1;

} car_doors1bits_t;

#define car_doors1bits (*((car_doors1bits_t*)&car_doors1))

so you can use the struct (car_doors1bits_t) as integer "variable" car_doors1 and as single bit car_doors1bits and vice versa.

Then you use the integer in vehicle_voltampera.c: (only a few examples!)

car_doors1 |= 0x0c;     // Set charge and pilot bits

and

witch bits is now what?

My understanding is that the MSB is "FrontLeftDoor" and the LSB is "CarON".

If i am right, than this is wrong: "car_doors1 &= ~0x80;    // CAR OFF"

this will clear FrontLeftDoor.

And this is "partial" right: "car_doors1 |= 0x0c;     // Set charge and pilot bits"

this will set Charging and the unnamed bit. But should set charging and PilotSignal. Then it must be 0x18

Can you or anybody else check?

I think it is better to use the bits direct. Like this:  car_doors1bits.ChargePort = 1

Bye

Michael J.