Why must I have both a user phase and servo function

[bradp]

I was working in the file “usrcode.c” and discovered that when I remove one of the default functions, like the one below, none of my user written functions will work. Why is this? double user_pid_ctrl(struct MotorData *Mptr) { return 0; }

[bradp]

[quote='bradp' pid='216' dateline='1255621191'] I was working in the file “usrcode.c” and discovered that when I remove one of the default functions, like the one below, none of my user written functions will work. Why is this? double user_pid_ctrl(struct MotorData *Mptr) { return 0; } [/quote] This is caused by the default header file usrcode.h. Inside this file we have the following: double user_pid_ctrl(struct MotorData *Mptr); EXPORT_SYMBOL(user_pid_ctrl); Right now if you want to remove the reference to the PID you must also remove the reference in the header file. Go to usrcode.h and remove the above lines.