Motorola M68HC08 manual Software Customizing to Motor Speed Control Setting, Range 0,255

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

User Guide

it is recommended to change START_INCR_OOUTREG by PC master software. (If it is a problem to start the motor, then I_CNTR_FOK can also be changed from default 0x03, but not recommended!)

17.If the motor starts and continues running, after you repeatedly start/stop, the start-up parameters are set properly

18.Open const_cust_x.h and modify parameters with the final variable values PER_CMT_START_US, START_INCR_OOUTREG, evaluated with PC master software.

19.Change the software back to normal, set speed regulator parameters to:

20.#define SPEED_PIREG_P_GAIN 64 #define SPEED_PIREG_I_GAIN 0

21.in const_cust_x.h file to enable speed regulation

22.Build the code (see Software Execution and Build)

6.5.6Software Customizing to Motor — Speed Control Setting

When the motor commutation setting is done, the speed control parameters need to be set.

For settings which must be done, follow the labels MUST_CHANGE_nn,

MUST_CHANGE_EXPER_nn in file const_cust_x.h.

For changes which can be done (but usually are not necessary), follow the labels CAN_CHANGE_nn, CAN_CHANGE_EXPER_nn in file

const_cust_x.h

Number of commutations per motor revolution:

/* MUST_CHANGE_9: */ #define COMMUT_REV 18.0

Range: <0,255>

Designer Reference Manual		DRM028 — Rev 0
150	User Guide	MOTOROLA
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