I'm trying to abstract my communications to an I2C device, so I'd like to create a structure that combines the I2C comm ports and some state variables for the device. So, the standard way for me to use the I2C lib is to declare an r_i2c instance, like so:
Code: Select all
struct r_i2c mpu = {
XS1_PORT_1P,
XS1_PORT_1O,
};
That's fine, but how do I declare the equivalent where the r_i2c structure is a field of my super struct? Naively, I tried this:
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struct IMU {
struct r_i2c i2c;
int GYRO_XOUT_OFFSET ;
int GYRO_YOUT_OFFSET ;
int GYRO_ZOUT_OFFSET ;
};
That seems to legal in XC, but it won't do what I'm hoping. I can't see how I would assign the mpu instance to the i2c field of the IMU struct.
I understand that there are limits with resources and structs in XC. Am I going to be running into that problem?
