/****************************************************************************/
/* Searching for the maximum steering turn of the servo by personal         */
/* computer.    乽sioservo2.c乿                                             */
/* Comunication cable <-> personal computer,PB<-Motor drive board (Vol.3)   */
/* Motor drive board (Vol.3) <- Servo motor                                 */
/* Comunication : Tera-term-pro 2005.04 Renesas Technology Micom Car Rally Executive Committee */
/****************************************************************************/
/*

First of all, Start up the Tera-term-pro.
This is the check program by which the actual maximum steering turn of the
servo of micom car is adjusted with using key board.
The servo motor moves like below every pushing each key as the following.

'Z' key     丗the value of servo motor offset -1
'X' key     丗the value of servo motor offset +1
'A' key     丗the value of servo motor offset -5
'S' key     丗the value of servo motor offset +5
*/

/*======================================*/
/* Include                              */
/*======================================*/
#include    <no_float.h>                /* The simplification of stdio is put first. */
#include    <stdio.h>
#include    <machine.h>
#include    "h8_3048.h"

/*======================================*/
/* Symbol definition                    */
/*======================================*/
#define         SERVO_CENTER    5000    /* The value of servo motor center */

/*======================================*/
/* Prototype declaration                */
/*======================================*/
void init( void );

/*======================================*/
/* Global variable declaration          */
/*======================================*/
int             servo_angle;            /* The angle of servo */

/************************************************************************/
/* Main program                                                         */
/************************************************************************/
void main( void )
{
    int     i, ret;
    char    c;

    /* Microcomputer function initialization */
    init();                             /* Initialization function     */
    init_sci1( 0x00, 79 );              /* Initialization of SCI1      */
    set_ccr( 0x00 );                    /* Entire interrupt permission */

    servo_angle = 0;
    printf(
        "Servo Angle Check Soft\n"
        "'Z' key   : Angle Value -1\n"
        "'X' key   : Angle Value +1\n"
        "\n"
        "'A' key   : Angle Value -5\n"
        "'S' key   : Angle Value +5\n"
        "\n"
    );
    printf( "%3d\r", servo_angle );

    while( 1 ) {
        ITU4_BRB = SERVO_CENTER - servo_angle * 26;

        i = get_sci( &c );
        if( i == 1 ) {
            switch( c ) {
            case 'Z':
            case 'z':
                servo_angle--;
                if( servo_angle < -50 ) servo_angle = -50;
                printf( "%3d\r", servo_angle );
                break;

            case 'X':
            case 'x':
                servo_angle++;
                if( servo_angle > 50 ) servo_angle = 50;
                printf( "%3d\r", servo_angle );
                break;

            case 'A':
            case 'a':
                servo_angle -= 5;
                if( servo_angle < -50 ) servo_angle = -50;
                printf( "%3d\r", servo_angle );
                break;

            case 'S':
            case 's':
                servo_angle += 5;
                if( servo_angle > 50 ) servo_angle = 50;
                printf( "%3d\r", servo_angle );
                break;

            default:
                break;
            }
        }
    }
}

/************************************************************************/
/*  H8/3048F-ONE Built-in Peripheral Functions Initialization           */
/************************************************************************/
void init( void )
{
    /*   I/O setting of port */
    P1DDR = 0xff;
    P2DDR = 0xff;
    P3DDR = 0xff;
    P4DDR = 0xff;
    P5DDR = 0xff;
    P6DDR = 0xf0;                       /*  DIP Switch on the CPU board  */
    P8DDR = 0xff;
    P9DDR = 0xf7;
    PADDR = 0xff;
    PBDR  = 0xc0;
    PBDDR = 0xfe;                       /* Motor drive board(Vol.3)      */
    /* There is no I/O setting because port 7 is for the input alone.    */

    /* ITU3,4 Reset-synchronized PWM mode for left morter, right morter, and servo */
    ITU3_TCR = 0x23;                    /* Setting of counter clear                */
    ITU_FCR  = 0x3e;                    /* Reset-synchronized PWM mode             */
    ITU3_GRA = 49151;                   /* Setting of Period of PWM                */
    ITU3_GRB = ITU3_BRB = 0;            /* Setting of left morter PWM              */
    ITU4_GRA = ITU4_BRA = 0;            /* Setting of right morter PWM             */
    ITU4_GRB = ITU4_BRB = SERVO_CENTER; /* Setting of sevo motor PWM               */
    ITU_TOER = 0x38;                    /* Setting of out put pins                 */
    ITU_STR  = 0x08;                    /* Starting of timer count register        */
}

/************************************************************************/
/* end of file                                                          */
/************************************************************************/