TM4C123GH6PM程序

模式一&模式二：单次计时&周期计时/*******************************************

开发坏境:CCSv5.4

开发板:TIVA C Launchpad(TM4C123GH6PM)

程序功能:16位定时器，单次定时模式和周期性定时模式

程序说明:

编程者：Linchpin

********************************************/

#include <stdint.h>

#include <stdbool.h>

#include "inc/tm4c123gh6pm.h"

#include "inc/hw_memmap.h"

#include "inc/hw_types.h"

#include "driverlib/sysctl.h"

#include "driverlib/interrupt.h"

#include "driverlib/gpio.h"

#include "driverlib/timer.h"

   

   

   

   

int main(void)

{

        SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);

        //5分频，使用PLL，外部晶振16M，system时钟源选择 main osc。系统时钟40MHZ

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

        //使能GPIOF外设

        GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);

        //使能TIMER0

   

   

        //TimerConfigure(TIMER0_BASE, TIMER_CFG_ONE_SHOT);//单次计数模式

        TimerConfigure(TIMER0_BASE, TIMER_CFG_PERIODIC);//周期性计数模式

   

   

        TimerLoadSet(TIMER0_BASE, TIMER_A,SysCtlClockGet() / 10 - 1);//计数频率10HZ

    IntEnable(INT_TIMER0A);//NVIC

        //使能TIMER0A

        TimerIntEnable(TIMER0_BASE, TIMER_TIMA_TIMEOUT);

        //TIMEOUT标志位触发中断

        IntMasterEnable();

    //master interrupt enable API for all interrupts

        TimerEnable(TIMER0_BASE, TIMER_A);

    //TIMER0A开始计数，当计数值等于TimerLoadSet，触发中断

        while(1)

        {

        }

}

   

   

void Timer0IntHandler(void)

{

   

   

        TimerIntClear(TIMER0_BASE, TIMER_TIMA_TIMEOUT);

    //清除标志位

        if(GPIOPinRead(GPIO_PORTF_BASE, GPIO_PIN_2))

        {

                GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0);

        }

        else

        {

                GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_2, 4);

        }

}

   

   

   

   

模式三：计数捕获

/*******************************************

开发坏境:CCSv5.4

开发板:TIVA C Launchpad(TM4C123GH6PM)

程序功能:16位定时器，计数捕获模式，递增计数模式

程序说明:捕获引脚PB6，当捕获边沿数达到Match时产生中断

编程者：Linchpin

********************************************/

#include <stdint.h>

#include <stdbool.h>

#include "inc/tm4c123gh6pm.h"

#include "inc/hw_memmap.h"

#include "inc/hw_types.h"

#include "driverlib/pin_map.h"

#include "driverlib/sysctl.h"

#include "driverlib/interrupt.h"

#include "driverlib/gpio.h"

#include "driverlib/timer.h"

   

   

int main(void)

{

    SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);

        //5分频，使用PLL，外部晶振16M，system时钟源选择 main osc。系统时钟40MHZ

    SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);

            //使能TIMER0 32位(TIMER0A16位+TIMER0B16位)

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);

        //使能GPIOF和GPIOC外设

        GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3);

        GPIOPinTypeGPIOInput(GPIO_PORTB_BASE, GPIO_PIN_6);

        GPIOPinConfigure(GPIO_PB6_T0CCP0);    //#define GPIO_PC4_WT0CCP0   0x00021007

        GPIOPinTypeTimer(GPIO_PORTB_BASE, GPIO_PIN_6);

   

   

        //计数捕获模式，上升沿捕获，Two half-width timers

        TimerConfigure(TIMER0_BASE,TIMER_CFG_A_CAP_COUNT_UP|TIMER_CFG_SPLIT_PAIR);

        //捕获模式，A定时器，上升沿捕获,增计数模式，到达匹配值后可自动清零

        TimerControlEvent(TIMER0_BASE,TIMER_A,TIMER_EVENT_POS_EDGE);

        //TimerLoadSet(TIMER0_BASE, TIMER_A, 6);//溢出值6

        TimerMatchSet(TIMER0_BASE, TIMER_A, 3);//匹配值3

          

    IntEnable(INT_TIMER0A);

        //使能TIMER0A

        TimerIntEnable(TIMER0_BASE, TIMER_CAPA_MATCH);

        //定时器A捕获事件触发中断

        IntMasterEnable();

    //master interrupt enable API for all interrupts

        TimerEnable(TIMER0_BASE, TIMER_A);

    //TIMER0A开始计数，当计数值等于TimerLoadSet，触发中断

        while(1)

        {

        }

}

   

   

void Timer0IntHandler(void)

{

   

   

        TimerIntClear(TIMER0_BASE,TIMER_CAPA_MATCH);

    GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 14);

    SysCtlDelay(SysCtlClockGet() / 30);//100ms

    GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0);

   

   

}

   

   

   

模式四：计时捕获

/*******************************************

开发坏境:CCSv5.4

开发板:TIVA C Launchpad(TM4C123GH6PM)

程序功能:16位定时器，计时捕获模式

程序说明:捕获引脚PB6

编程者：Linchpin

********************************************/

#include <stdint.h>

#include <stdbool.h>

#include "inc/tm4c123gh6pm.h"

#include "inc/hw_memmap.h"

#include "inc/hw_types.h"

#include "driverlib/pin_map.h"

#include "driverlib/sysctl.h"

#include "driverlib/interrupt.h"

#include "driverlib/gpio.h"

#include "driverlib/timer.h"

   

   

int main(void)

{

    SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);

        //5分频，使用PLL，外部晶振16M，system时钟源选择 main osc。系统时钟40MHZ

    SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER0);

            //使能TIMER0 32位(TIMER0A16位+TIMER0B16位)

    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOB);

        //使能GPIOF和GPIOC外设

        GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3);

        GPIOPinTypeGPIOInput(GPIO_PORTB_BASE, GPIO_PIN_6);

        GPIOPinConfigure(GPIO_PB6_T0CCP0);    //#define GPIO_PC4_WT0CCP0   0x00021007

        GPIOPinTypeTimer(GPIO_PORTB_BASE, GPIO_PIN_6);

   

   

        TimerConfigure(TIMER0_BASE,TIMER_CFG_A_CAP_TIME_UP|TIMER_CFG_SPLIT_PAIR);//计时捕获模式，上升沿捕获

        TimerControlEvent(TIMER0_BASE,TIMER_A,TIMER_EVENT_POS_EDGE);

        //捕获模式，A定时器，上升沿捕获

    IntEnable(INT_TIMER0A);

        //使能TIMER0A

        TimerIntEnable(TIMER0_BASE, TIMER_CAPA_EVENT);

        //定时器A捕获事件触发中断

        IntMasterEnable();

    //master interrupt enable API for all interrupts

        TimerEnable(TIMER0_BASE, TIMER_A);

    //TIMER0A开始计数，当计数值等于TimerLoadSet，触发中断

        while(1)

        {

        }

}

   

   

void Timer0IntHandler(void)

{

   

   

        TimerIntClear(TIMER0_BASE,TIMER_CAPA_EVENT);

    GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0);

    SysCtlDelay(SysCtlClockGet() / 30);//100ms

    GPIOPinWrite(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 14);

   

   

}

   

   

方式一：GPIO模拟SPI通信

/*******************************************

开发坏境:CCSv5.4

开发板:TIVA C Launchpad(TM4C123GH6PM)

程序功能:DAC_TLV5618 输出正弦波

程序说明:1.DIN——PC6 2.SCLK——PC5 3.CS——PC4 4.OUTA 5.AGND 6.REF 7.OUTB 8.VDD

编程者：Linchpin

********************************************/

#include <stdint.h>

#include <stdbool.h>

#include <math.h>

#include "inc/tm4c123gh6pm.h"

#include "inc/hw_types.h"

#include "inc/hw_memmap.h"

#include "driverlib/fpu.h"

#include "driverlib/sysctl.h"

#include "grlib/grlib.h"

#include "driverlib/gpio.h"

#include "inc/hw_gpio.h"

   

   

#define uchar unsigned char

#define uint unsigned int

//void CS(uchar i);

//void SCLK(uchar i);

//void DIN(uchar i);

   

   

void init_DAC(void);

void DA_conver(uint temp);

void Write_A(float out_volt);

int VoltToData(float out_volt) ;

void delay_Nms(uint n);

   

   

float  sinx_128[]={0.299734,0.313719,0.327637,0.341454,0.355137,0.368653,0.381968,0.395052,0.407873,0.420399,0.432601,0.444449,0.455914,0.466969,0.477588,0.487745,0.497414,0.506574,0.515202,0.523277,0.530779,0.537692,0.543997,0.549680,0.554727,0.559126,0.562866,0.565939,0.568336,0.570053,0.571084,0.571429,0.571084,0.570053,0.568336,0.565939,0.562866,0.559126,0.554727,0.549680,0.543997,0.537692,0.530780,0.523277,0.515202,0.506575,0.497415,0.487745,0.477589,0.466970,0.455915,0.444449,0.432601,0.420400,0.407873,0.395053,0.381969,0.368653,0.355138,0.341455,0.327638,0.313720,0.299734,0.285715,0.271696,0.257710,0.243792,0.229975,0.216292,0.202777,0.189461,0.176377,0.163556,0.151030,0.138829,0.126981,0.115515,0.104460,0.093841,0.083684,0.074015,0.064855,0.056227,0.048152,0.040649,0.033737,0.027432,0.021749,0.016702,0.012303,0.008563,0.005490,0.003093,0.001376,0.000344,0.000005,0.000344,0.001376,0.003092,0.005490,0.008562,0.012302,0.016701,0.021748,0.027431,0.033736,0.040648,0.048151,0.056226,0.064853,0.074013,0.083683,0.093839,0.104458,0.115513,0.126979,0.138827,0.151028,0.163554,0.176375,0.189459,0.202774,0.216290,0.229973,0.243790,0.257708,0.271693,0.285713,};

uint num;

   

   

void main(void)

{

   

   

        //使能FPU

        FPUEnable();

        FPULazyStackingEnable();

        SysCtlClockSet(SYSCTL_SYSDIV_2_5|SYSCTL_USE_PLL|SYSCTL_XTAL_10MHZ|SYSCTL_OSC_MAIN);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);//使能GPIO外设

        SysCtlGPIOAHBEnable(GPIO_PORTC_BASE);//挂在AHB高性能总线上

        GPIOPinTypeGPIOOutput(GPIO_PORTC_BASE, GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6);

        init_DAC();

        while(1)

    {

                Write_A(sinx_128[num++]);

                if(num>=128) num=0;

    }

}

//片选信号端，低电平有效,PC4

/*void CS(uchar i)

{

         if(i) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4,GPIO_PIN_4);

         else  GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4,~GPIO_PIN_4);

}

//同步串行时钟输入,PC5

void SCLK(uchar i)

{

          if(i)  GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5,GPIO_PIN_5 );

          else   GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5,~GPIO_PIN_5);

}

//串行数据输入端，串行时钟上升沿输入,PC6

void DIN(uchar i)

{

        if(i)  GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6,GPIO_PIN_6 );

    else   GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6,~GPIO_PIN_6);

}*/

   

   

/******初始化DAC***************/

void init_DAC(void)

{

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4,GPIO_PIN_4);//CS(1);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5,~GPIO_PIN_5);//SCLK(0);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6,~GPIO_PIN_6);//DIN(0);

}

   

   

void DA_conver(uint temp)

{

        uchar i;

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4,~GPIO_PIN_4);//CS(0);

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5,GPIO_PIN_5 );//SCLK(1);

        for(i=0;i<16;i++)

    {

   

   

                if( (temp & 0x8000) ==0) GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6,~GPIO_PIN_6);

                else GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6,GPIO_PIN_6);

                GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5,~GPIO_PIN_5 );

         //;

                temp<<=1;

                GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_5,GPIO_PIN_5 );

   

   

    }

   

   

        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_4,GPIO_PIN_4);

}

   

   

void Write_A(float out_volt)

{

        //int Data_A;

        //Data_A=VoltToData(out_volt);

   //A通道

   DA_conver(0xc000|(0x0fff&VoltToData(out_volt)));

}

int VoltToData(float out_volt) //说明ref为参考源　out_volt为输出模拟电压值

{

   int temp2;

   temp2=(int)((out_volt*4096)/(2*3.3));

   return(temp2&0xfff);

}//将电压值转换为对应的12位数字量函数

   

   

   

方式二：硬件SPI通信（速度比GPIO模拟快很多）

/*******************************************

开发坏境:CCSv5.4

开发板:TIVA C Launchpad(TM4C123GH6PM)

程序功能:TLV5618 SPI通信(TI模式)

程序说明:1.DIN——PF1 2.SCLK——PF2 3.CS——PF3

       DAC采样速率：95KHZ

编程者：Linchpin

********************************************/

#include <stdint.h>

#include <stdbool.h>

#include "inc/hw_types.h"

#include "inc/hw_memmap.h"

#include "inc/hw_gpio.h"

#include "inc/hw_ssi.h"

#include "grlib/grlib.h"

#include "driverlib/sysctl.h"

#include "driverlib/gpio.h"

#include "driverlib/ssi.h"

#include "driverlib/rom.h"

#include "driverlib/pin_map.h"

   

   

#define uchar unsigned char

#define uint unsigned int

   

   

void DAC_Write_A(float out_volt);

   

   

void main(void)

{

   

   

        SysCtlClockSet(SYSCTL_SYSDIV_2_5 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN |SYSCTL_XTAL_10MHZ);

    SysCtlPeripheralEnable(SYSCTL_PERIPH_SSI1);

        SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

        //SysCtlGPIOAHBEnable(GPIO_PORTF_BASE);//挂在AHB高性能总线上

    GPIOPinConfigure(GPIO_PF2_SSI1CLK);

        GPIOPinConfigure(GPIO_PF3_SSI1FSS);

        GPIOPinConfigure(GPIO_PF1_SSI1TX);

        GPIOPinTypeSSI(GPIO_PORTF_BASE,GPIO_PIN_1|GPIO_PIN_3|GPIO_PIN_2);

        //SSI1_BASE/时钟频率/时钟协议，moto代表SPI协议/工作模式：主机模式/位速率4M/数据帧位数16

        //SSIConfigSetExpClk(SSI1_BASE, SysCtlClockGet(), SSI_FRF_MOTO_MODE_0 , SSI_MODE_MASTER, 25000000, 16);

        SSIConfigSetExpClk(SSI1_BASE, SysCtlClockGet(), SSI_FRF_TI , SSI_MODE_MASTER, 25000000, 16);

        SSIEnable(SSI1_BASE);

   

   

    while(1)

        {

            DAC_Write_A(1);

            //SysCtlDelay(SysCtlClockGet()/3000);

            DAC_Write_A(2);

            //SysCtlDelay(SysCtlClockGet()/3000);

    }

}

   

   

void DAC_Write_A(float out_volt)

{

    //(uint)(out_volt*4095)/(2*3.281) 先将电压值转化为0~4095的整数

        //0x0fff&  转化成16位二进制数，后12位为数据位

        //0xc000|  前面加上4位为1100（命令位）：快速模式，正常功耗，写数据到A通道

        SSIDataPut(SSI1_BASE, 0xc000|(0x0fff&((uint)((out_volt*4095)/(2*3.281)))));

    while(SSIBusy(SSI1_BASE)) ;//等待发送完毕

}