Software modifications

AN2038

10/23

The following steps are required to modify the standard libraries to emulate the I2C using

SPI:

●

First, configure the libraries using the configuration tools AK-ST7FMC Control Panel.

Refer to the related manual.

●

Copy the two provided modules (I2C.c, I2C.h, ProtoSup.c, ProtoSup.h) in the project

folder.

●

Copy the vector.c file provided into the project folder overwriting old vector.c file.

●

Copy the main.c file provided into the project folder overwriting old main.c file.

●

Open the workspace using Softec STVD7 v.3.10 Integrated Development Environment.

●

Add the two files I2C.c and ProtoSup.c in the "Source Files" folder of the workspace

and the two files I2C.h and ProtoSup.c in the "Include Files" folder of the workspace.

●

Inside the I2C.h file select the kind of motor defining the correspondent MOTOR_TYPE

constant PMAC, BLDC or AC:

#define MOTOR_TYPE PMAC

or

#define MOTOR_TYPE BLDC

or

#define MOTOR_TYPE AC

●

Interrupt priority setup:

If the AC (or PMAC) motor has been selected, then modify the

ST7_IntPrioritySetUp function defined in the st7_misc.c file:

ISPR0 = MCES_LVL_3 + MCC_SI_LVL_1 + EXT_IT0_LVL_2 + EXT_IT1_LVL_1;

ISPR1 = EXT_IT2_LVL_2 + MTC_U_CL_SO_LVL_3 + MTC_R_Z_LVL_2 +

MTC_C_D_LVL_2;

ISPR2 = SPI_LVL_2 + TIMER_A_LVL_2 + TIMER_B_LVL_1 + SCI_LVL_1;

If the BLDC motor has been selected, then modify the ST7_IntPrioritySetUp

function defined in the misc.c file:

ITSPR0 = MCES_LVL_3 + MCC_SI_LVL_1 + EXT_IT0_LVL_2 + EXT_IT1_LVL_1;

ITSPR1 = EXT_IT2_LVL_2 + MTC_U_CL_SO_LVL_3 + MTC_R_Z_LVL_3 +

MTC_C_D_LVL_3;

ITSPR2 = SPI_LVL_2 + TIMER_A_LVL_2 + TIMER_B_LVL_3 + SCI_LVL_1;

ITSPR3 = (AVD_LVL_1 + PWMART_LVL_2) | (u8)(0xf0);

Modification related to PMAC Motor

●

Modify the PMACparam.h:

●

Modify the define of target frequency

#define TARGET_FREQ_CL 1500

in

extern u16 TARGET_FREQ_CL;