doc/html/db66dev1_nodriver_demo_2main_8c-example.html

#define THIS_IS_MAIN_FILE   //Uniquely identifies this as the file with the main application entry function main()


#include "HardwareProfile.h"    //Required for all Netcruzer projects


//Button defines

#define BUTTON1         PIN_30

#define BUTTON2         PIN_31

#define BUTTON3         PIN_32

#define BUTTON4         PIN_33

#define BUTTON1_PULLUP  PULLUP_30

#define BUTTON2_PULLUP  PULLUP_31

#define BUTTON3_PULLUP  PULLUP_32

#define BUTTON4_PULLUP  PULLUP_33

#define BUTTON1_DIR     DIR_30

#define BUTTON2_DIR     DIR_31

#define BUTTON3_DIR     DIR_32

#define BUTTON4_DIR     DIR_33


//LED define

#define LED1        LAT_06

#define LED2        LAT_07

#define LED3        LAT_08

#define LED4        LAT_09

#define LED5        LAT_26

#define LED6        LAT_27

#define LED7        LAT_28

#define LED8        LAT_29

#define LED1_DIR    DIR_06

#define LED2_DIR    DIR_07

#define LED3_DIR    DIR_08

#define LED4_DIR    DIR_09

#define LED5_DIR    DIR_26

#define LED6_DIR    DIR_27

#define LED7_DIR    DIR_28

#define LED8_DIR    DIR_29


//Other defines

#define BUZZ_PERIOD   PWM_CALCULATE_PERIOD_FOR_FREQUENCY(1000)


int main(void)

{

    WORD tmrFlashLed = 0;   //Timer for flashing system LED

    WORD tmrProcessIO = 0;  //Timer for processing I/O


    nzSysInitDefault();         //Default initialization. All ports inputs. All analog features disabled. Tick 1ms


    DIR_SYSLED = OUTPUT_PIN;    //Set System LED port as outputs


    //LED outputs

    LED1_DIR = OUTPUT_PIN;

    LED2_DIR = OUTPUT_PIN;

    LED3_DIR = OUTPUT_PIN;

    LED4_DIR = OUTPUT_PIN;

    LED5_DIR = OUTPUT_PIN;

    LED6_DIR = OUTPUT_PIN;

    LED7_DIR = OUTPUT_PIN;

    LED8_DIR = OUTPUT_PIN;


    //Configure Button ports as inputs

    BUTTON1_DIR = INPUT_PIN;

    BUTTON2_DIR = INPUT_PIN;

    BUTTON3_DIR = INPUT_PIN;

    BUTTON4_DIR = INPUT_PIN;


    //Enable pull-up resistors for all button inputs

    BUTTON1_PULLUP = 1;

    BUTTON2_PULLUP = 1;

    BUTTON3_PULLUP = 1;

    BUTTON4_PULLUP = 1;


    adcOpen(ADC_OPEN_A3);       //Configure port 3 (old port name X3) as ADC channels


    //Configure Port 34 (old port name Y4) (Buzzer on DB66DEV1) as PWM channel 1, with default frequency of 16kHz.

    //The value of the PWM1_FREQ define determines the frequency, and is 16kHz by default.

    //To change the default frequency, do one of the following:

    // - Redefine PWM1_FREQ in projdefs.h file for desired frequency (For example: #define PWM1_FREQ  PWM_FREQ_80KHZt)

    // - Call pwm1SetPeriod() with period for desired frequency

    pwm1OpenDefault(PPS_OUT_34, 0);


    //Update period of PWM to 1kHz (defined in BUZZ_PERIOD), the pwm1OpenDefault() function

    //configured it to 16kHz by defailt.

    pwm1SetPeriod( BUZZ_PERIOD );

    pwm1SetDutyCycle(0);            //Set duty cycle to 0, turns buzzer off


while(1)

    {

        nzSysTaskDefault();     //Main netcruzer task, call in main loop.


        //Process I/O every 50ms

        if (tick16TestTmr(tmrProcessIO)) {

            tick16UpdateTmrMS(tmrProcessIO, 50); //Update timer to expire in 50ms again


            LED5 = !BUTTON1;    //Turn on LED 5 if button 1 pressed, and off if not

            LED6 = !BUTTON2;    //Turn on LED 6 if button 2 pressed, and off if not

            LED7 = !BUTTON3;    //Turn on LED 7 if button 3 pressed, and off if not

            LED8 = !BUTTON4;    //Turn on LED 8 if button 4 pressed, and off if not


            //If analog input is above 2.0V (2000mV), turn LED1 and Buzzer on

            if (adcReadChanMv(ADC_CH_A3) > 2000) {

                LED1 = 1;               //Turn LED on


                //Set duty cycle to 50% (period/2). This gives maximum volume on buzzer

                pwm1SetDutyCycle( BUZZ_PERIOD/2 );

            }

            else {

                LED1 = 0;               //Turn LED off

                pwm1SetDutyCycle(0);    //Set duty cycle to 0%, buzzer if off

            }

        }


        //Flash system LED every 500ms

        if (tick16TestTmr(tmrFlashLed)) {

            tick16UpdateTmrMS(tmrFlashLed, 500); //Update timer to expire in 500ms again

            LAT_SYSLED = !LAT_SYSLED;       //Toggle System LED

        }

    }//end while


    return 0;

}//end main


#if !defined(PPS_OUT_34)

#error "Can not build for this target, it does not have a reconfigurable Port 34 (old port name Y4)n! This is the case for the SBC66EC Revision 1 board. Select a different Configuration!"

#endif