#include "driverlib/ssi.h"

#include "driverlib/i2c.h"

#include "driverlib/udma.h"

#include "driverlib/fpu.h"

#include "driverlib/rom.h"

#include "inc/hw_ssi.h"

#include "inc/hw_i2c.h"

// refer to teacher's demo, SSI module init

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

    GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1);

    GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1,<<);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI1);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);

    GPIOPinConfigure(GPIO_PD0_SSI1CLK);

    GPIOPinConfigure(GPIO_PD3_SSI1TX);

    GPIOPinTypeSSI(GPIO_PORTD_BASE,GPIO_PIN_3|GPIO_PIN_0);

    SSIConfigSetExpClk(SSI1_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_1, SSI_MODE_MASTER, , );

    SSIEnable(SSI1_BASE);

clear all,clc

i=:

y=/*i;

y=ceil(y);

max(y)

min(y)

dec2hex(y)

// write data

void dac_writedata(uint16_t ui32Data)

{

    GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1,<<);

    SSIDataPut(SSI1_BASE, ui32Data);

    while(SSIBusy(SSI1_BASE))

        ;

    GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1,<<);

}

if (flag_wave==)

    {

     //dac_writedata(sin_data[i]/voltage_div);

        dac_writedata(sin_data[i]/(/voltage));

    }

TimerLoadSet(TIMER0_BASE, TIMER_A, SysCtlClockGet() / (freq*point) - );    // Change the timer0 frequency