|
|
回复 板凳 hlx3012 的帖子
//————————————————头文件————————————————————
#include "inc/hw_ints.h"//硬件中断
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"//硬件类型
#include "driverlib/gpio.h"//GPIO
#include "driverlib/sysctl.h"//系统
#include "grlib/grlib.h"//画图
#include "drivers/kitronix320x240x16_ssd2119_8bit.h"
#include "drivers/set_pinout.h"
#include "driverlib/interrupt.h"//中断
#include "driverlib/comp.h"//comp
#include "driverlib/systick.h"//systick
#include "driverlib/adc.h"//adc
#include
//———————————————————————————————————————
tContext sContext;//声明绘图
tBoolean ADC_EndFlag = false;//定义A/D转换结束的标志
unsigned long TheSysClock = 12000000UL;//定义系统时钟12MHZ
//———————————————————————————————————————
// The error routine that is called if the driver library encounters an error.
//———————————————————————————————————————
#ifdef DEBUG4
void
__error__(char *pcFilename, unsigned long ulLine)
{
}
#endif
//———————————————————————————————————————
//******************************************************************************
// Initialize the System timer (SysTick)初始化
void SysTickInit(void)
{ // Set the period of the SysTick
SysTickPeriodSet(TheSysClock);//SysTick（一个简单的定时器）的周期
// Enable SysTick interrupts
SysTickIntEnable();//使能SysTick中断
// Enable System interrupts
IntMasterEnable();//使能处理器中断
// Enable the SysTick
SysTickEnable();//使能SysTick计数器
}
//******************************************************************************
//———————————————————————————————————————
// Display the temperature of the chip
void tmpDisplay(unsigned long ulValue)
{
unsigned long ulTemp;
char pcBuffer1[4];
char pcBuffer2[3];
ulTemp = 151040UL - 225 * ulValue;//（ADC采样值转化为温度值）的1024倍
pcBuffer1[0] = ' ';//空格
pcBuffer1[1] = (ulTemp/1024)%100/10 + '0';//十位
pcBuffer1[2] = (ulTemp/1024)%10 + '0';//个位
pcBuffer1[3] = '\0';//结束符
GrContextFontSet(&sContext, &g_sFontCm36b);//字体设置
GrStringDrawCentered(&sContext, pcBuffer1, -1, 110, 180, 1);//写整数部分
pcBuffer2[0] = '.';//小数点
pcBuffer2[1] = (ulTemp%1024)/102+'0';//小数
pcBuffer2[2] = '\0';//结束符
GrContextFontSet(&sContext, &g_sFontCm36b);//字体设置
GrStringDrawCentered(&sContext, pcBuffer2, -1, 150, 180, 1);//写小数部分
}
//———————————————————————————————————————
//******************************************************************************
// SysTick ISR SysTick的中断服务函数
void SysTick_ISR(void)
{ // Just used to wake up CPU，do nothing 唤醒CPU
}
//******************************************************************************
//———————————————————————————————————————
// ADC Sequence 3 ISR ADC序列3的中断服务函数
void ADC_Sequence_3_ISR(void)
{ unsigned long ulStatus;
//Get interrupt status
ulStatus = ADCIntStatus(ADC_BASE, 3, true);//获取当前的中断状态
// Clear interrupts
ADCIntClear(ADC_BASE, 3);//清除中断状态，重要
// If interrupt status is ture, set ADC ending flag as ture
//如果中断状态有效，置位ADC采样结束标志
if (ulStatus != 0)
{
ADC_EndFlag = true;
}
}
//如果中断状态值为真，则将中断结束标志置为真，真表示需要屏蔽的中断状态
//假表示需要原始的中断状态
//———————————————————————————————————————
int main(void)
{ unsigned long ulValue;
// Set the clocking to run directly from the crystal.
SysCtlClockSet(SYSCTL_SYSDIV_1|SYSCTL_USE_OSC|SYSCTL_XTAL_16MHZ|SYSCTL_OSC_MAIN);
// Get system clock
TheSysClock = SysCtlClockGet();//获取处理器时钟速率
// Initialize the device pinout appropriately for this board.
//—————————————初始化显示驱动—————————————————
PinoutSet();
// Initialize the display driver and graphics context.
Kitronix320x240x16_SSD2119Init();
//—————————————————————————————————————
GrContextInit(&sContext, &g_sKitronix320x240x16_SSD2119);//初始化a drawning context
//————————————————设置方框—————————————————
tRectangle sRect;
sRect.sXMin = 0;
sRect.sYMin = 0;
sRect.sXMax = GrContextDpyWidthGet(&sContext) - 1;
sRect.sYMax = 23;
//—————————————————————————————————————
GrContextForegroundSet(&sContext, ClrDarkBlue);
GrRectFill(&sContext, &sRect);
GrContextForegroundSet(&sContext, ClrWhite);
GrRectDraw(&sContext, &sRect);
GrContextFontSet(&sContext, &g_sFontCm20);
GrStringDrawCentered(&sContext, "Lab7-2: ADC Controls", -1,GrContextDpyWidthGet(&sContext) / 2, 10, 0);
// Operation Tips
GrContextFontSet(&sContext, &g_sFontCm26b);
GrStringDrawCentered(&sContext, "Temperature Sample", -1,GrContextDpyWidthGet(&sContext) / 2, 60, 1);
GrContextFontSet(&sContext, &g_sFontCm16);
GrStringDrawCentered(&sContext, "Sample from the internal temperature sensor,", -1,GrContextDpyWidthGet(&sContext) / 2, 100, 1);
GrStringDrawCentered(&sContext, "the current temperature of MCU is :", -1,GrContextDpyWidthGet(&sContext) / 2, 140, 1);
GrStringDrawCentered(&sContext, "o", -1,GrContextDpyWidthGet(&sContext) / 2+20, 165, 1);
GrContextFontSet(&sContext, &g_sFontCm36);
GrStringDrawCentered(&sContext, "C", -1,GrContextDpyWidthGet(&sContext) / 2+35, 180, 1);
// Initialize the ADC0.
// Enable ADC0
SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC0);//使能ADC0
// Set the sample rate of ADC0
SysCtlADCSpeedSet(SYSCTL_ADCSPEED_125KSPS);//设置ADC采样速率
// Disable before setting
ADCSequenceDisable(ADC_BASE, 3);//禁止一个采样序列
// Configure sample sequence：ADC base address，sample sequence number，trigger event，and priority
ADCSequenceConfigure(ADC_BASE, 3, ADC_TRIGGER_PROCESSOR, 0);//采样序列配置，0表示最高优先级
// Sample step setup：ADC base address，sample sequence number，step value，channel setting
ADCSequenceStepConfigure(ADC_BASE, 3, 0, ADC_CTL_TS|ADC_CTL_END|ADC_CTL_IE);//采样步进设置
// Enable ADC interrupt
ADCIntEnable(ADC_BASE, 3);//使能ADC中断
// Enable interrupt for ADC sequence 3
IntEnable(INT_ADC3);//使能ADC采样序列中断
// Enable system clock
IntMasterEnable();//使能处理器中断
// Start Sampling
ADCSequenceEnable(ADC_BASE, 3);//使能采样序列
// Initialize SysTick
SysTickInit();//SysTick初始化
while(1)
{ // fall into sleep mode
SysCtlSleep();//使处理器进入睡眠模式
// Process
ADCProcessorTrigger(ADC_BASE, 3);//处理器触发采样序列
// Waiting for sample complete
while (!ADC_EndFlag);
// Clear flag
ADC_EndFlag = false;
ADCSequenceDataGet(ADC_BASE, 3, &ulValue);//获取采样序列3捕获的数据
// Display the current temperature of the CPU
tmpDisplay(ulValue);
GrFlush(&sContext);
}
} |
|
提升卡
变色卡
千斤顶
1/10 
京公网安备 11010802033920号
Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved
