library

//*****************************************************************************
// File Name    : pulsetest.c
// 
// Title                : example usage of pulse library functions
// Revision             : 1.0
// Notes                :       
// Target MCU   : Atmel AVR series
// Editor Tabs  : 4
// 
// Revision History:
// When                 Who                     Description of change
// -----------  -----------     -----------------------
// 29-Apr-2003  pstang          Created the program
//*****************************************************************************

 
//----- Include Files ---------------------------------------------------------
#include <avr/io.h>                     // include I/O definitions (port names, pin names, etc)
#include <avr/interrupt.h>      // include interrupt support

#include "global.h"             // include our global settings
#include "uart.h"               // include uart function library
#include "rprintf.h"    // include printf function library
#include "timer.h"              // include timer function library (timing, PWM, etc)
#include "pulse.h"              // include pulse output support

void pulseTest(void);

//----- Begin Code ------------------------------------------------------------
int main(void)
{
        // initialize our libraries
        // initialize the UART (serial port)
        uartInit();
        // set the baud rate of the UART for our debug/reporting output
        uartSetBaudRate(9600);
        // initialize the timer system
        timerInit();
        // initialize rprintf system
        rprintfInit(uartSendByte);
        
        // run the test
        pulseTest();

        return 0;
}

void pulseTest(void)
{
        u16 i;

        // print a little intro message so we know things are working
        rprintf("\r\nWelcome to the pulse library test program!\r\n");

        // set pulse pins as output
        // ** these are the correct pins for most processors, but not all **
        sbi(DDRD, 4);
        sbi(DDRD, 5);

        // initialize pulse library
        pulseInit();


        // do logarithmic frequency sweep
        rprintf("Running logarithmic frequency sweep...\r\n");
        for(i=1; i<4000; i+=((i/5)+1))
        {
                // set the output frequency
                pulseT1ASetFreq(i);
                // - set the number of pulses to output
                // - number of pulses will be set to make each
                //   frequency last 1/5 of a second in time
                // ** make sure we don't request zero pulses
                // ** because this means run indefinitely
                pulseT1ARun( (i/5)+1 );
                // print a debug message
                rprintf("Output Freq = %dHz\r\n", i);
                // wait for pulses to finish being output
                while(pulseT1ARemaining());
        }


        // do simultaneous pulse output on OC1A and OC1B pins with different frequencies
        rprintfCRLF();
        rprintf("Running simultaneous output on OC1A and OC1B with different frequencies\r\n");
        rprintf("OC1A will be at  50Hz for 2 seconds (100 pulses)\r\n");
        rprintf("OC1B will be at 175Hz for 4 seconds (700 pulses)\r\n");
        // start OC1A output
        pulseT1ASetFreq(50);
        pulseT1ARun(100);
        // start OC1B output
        pulseT1BSetFreq(175);
        pulseT1BRun(700);
        // enter a debug loop as long as there are pulses remaining
        while(pulseT1ARemaining() | pulseT1BRemaining())
        {
                rprintf("OC1A has %d pulses remaining, OC1B has %d pulses remaining\r\n", pulseT1ARemaining(), pulseT1BRemaining());
                timerPause(100);
        }
        rprintf("done!\r\n");

}