I'm currently working with Arduino Unos, 9DOFs, and XBees, and I was trying to create a struct that could be sent over serial, byte by byte, and then re-constructed into a struct.
So far I have the following code:
struct AMG_ANGLES {
float yaw;
float pitch;
float roll;
};
int main() {
AMG_ANGLES struct_data;
struct_data.yaw = 87.96;
struct_data.pitch = -114.58;
struct_data.roll = 100.50;
char* data = new char[sizeof(struct_data)];
for(unsigned int i = 0; i<sizeof(struct_data); i++){
// cout << (char*)(&struct_data+i) << endl;
data[i] = (char*)(&struct_data+i); //Store the bytes of the struct to an array.
}
AMG_ANGLES* tmp = (AMG_ANGLES*)data; //Re-make the struct
cout << tmp.yaw; //Display the yaw to see if it's correct.
}
Source: http://codepad.org/xMgxGY9Q
This code doesn't seem to work, and I'm not sure what I'm doing wrong.
How do I solve this?
It seems I've solved my issue with the following code.
struct AMG_ANGLES {
float yaw;
float pitch;
float roll;
};
int main() {
AMG_ANGLES struct_data;
struct_data.yaw = 87.96;
struct_data.pitch = -114.58;
struct_data.roll = 100.50;
//Sending Side
char b[sizeof(struct_data)];
memcpy(b, &struct_data, sizeof(struct_data));
//Receiving Side
AMG_ANGLES tmp; //Re-make the struct
memcpy(&tmp, b, sizeof(tmp));
cout << tmp.yaw; //Display the yaw to see if it's correct
}
WARNING: This code will only work if sending and receiving are using the same endian architecture.