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（6）按暫停鍵，計價器可暫停計價，按查詢鍵，可顯示總等待時間。

1 液晶尺寸是3.2寸，控制器是 ILI9341
2 SD卡4位模式DMA ，支持長文件名及中文文件名

制作出來的stm32出租車計價器實物圖如下：

stm32單片機出租車計價器源程序如下:

/******************** CHD1807 Team **************************
* 文件名：main.c
* 描述：LCD顯示實驗，可中英混合顯示，可顯示BMP格式的圖片，可截圖，
* 截圖保存在MicroSD卡中，文件名存為myScreen.bmp，
* 需顯示的BMP圖片和字庫存放在MicroSD卡中。
* 實驗平臺：CHD1807-STM32開發板
* 庫版本：ST3.5.0
**********************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "SysTick.h"
#include "usart1.h"
#include "lcd.h"
//#include "sd_fs_app.h"
//#include "Sd_bmp.h"
#include "adc.h"
#include "exti.h"
#include "led.h"
#include "pwm_output.h"
#include "SPI_NRF.h"
#include "Time_test.h"
//#include"ds18b20.h"
int num=0,i=0,j=0,k=0,h,time=0,q=4,flag=0;
u8 status; //用于判斷接收/發送狀態
u8 rxbuf[4]={0,0,0,0}; //接收緩沖
float distance=0,all_distance=0,danjia=0,all_money=0;
float speed=10;
int all_distance_a[2]={0,0};
int all_money_a[2]={0,0};
int danjia_a[2]={0,0};
int s_a=0,t_a=0;;
float R=6.5;
int d1=0,d2=0,d3=0,d4=0;
int m1=0,m2=0,m3=0,m4=0;
u8 ReadValue;
//////////////////////////////////////////////////////////////////////////////////////////////////////////
void delay1()
{int j,h;
for(j=0;j<1000;j++)
for(h=0;h<1000;h++);
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////
void NRF_control(void)
{
/*等待接收數據*/
status = NRF_Rx_Dat(rxbuf); /*判斷接收狀態*/
i=rxbuf[1];
if(i==1) { LED_B14(ON); LED_B15(OFF); LED_D12(OFF); LED_A8(OFF); LED_C6(OFF); LED_C7(OFF);
TIM_SetCompare3(TIM3,550); TIM_SetCompare4(TIM3,450);
TIM_SetCompare3(TIM4,1000); TIM_SetCompare4(TIM4,1000); }
if(i==2) { LED_B14(OFF); LED_B15(ON); LED_D12(OFF); LED_A8(OFF); LED_C6(OFF); LED_C7(OFF);
TIM_SetCompare3(TIM3,1000); TIM_SetCompare4(TIM3,1000);
TIM_SetCompare3(TIM4,550); TIM_SetCompare4(TIM4,500); }
if(i==3) { LED_B14(OFF); LED_B15(OFF); LED_D12(ON); LED_A8(OFF); LED_C6(OFF); LED_C7(OFF);
TIM_SetCompare3(TIM3,1000); TIM_SetCompare4(TIM3,1000);
TIM_SetCompare3(TIM4,1000); TIM_SetCompare4(TIM4,1000); }
if(i==4) { LED_B14(OFF); LED_B15(OFF); LED_D12(OFF); LED_A8(ON); LED_C6(OFF); LED_C7(OFF);
TIM_SetCompare3(TIM3,600); TIM_SetCompare4(TIM3,350);
TIM_SetCompare3(TIM4,1000); TIM_SetCompare4(TIM4,1000); }
if(i==5) { LED_B14(OFF); LED_B15(OFF); LED_D12(OFF); LED_A8(OFF); LED_C6(ON); LED_C7(OFF);
TIM_SetCompare3(TIM3,350); TIM_SetCompare4(TIM3,600);
TIM_SetCompare3(TIM4,1000); TIM_SetCompare4(TIM4,1000); }
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void calculate(void)
{
// temperature=(int)DS18B20_Get_Temp();
distance = k*2*3.14*R/1000;
speed = distance*100*10;
all_distance = all_distance+distance;
if(all_distance<30) all_money=50;
else all_money = (all_distance-30)*danjia + 50;
all_distance_a[0]=(int)all_distance%10; all_distance_a[1]=(int)all_distance/10;
all_money_a[0]=(int)all_money%10; all_money_a[1]=(int)all_money/10;
danjia_a[1]=danjia*10;
danjia_a[0]=(int)danjia_a[1]%10; danjia_a[1]=(int)danjia_a[1]/10;
if((all_distance/100)>=1) d1=1;
if((all_distance/1000)>=1) d2=1;
if((all_distance/10000)>=1) d3=1;
if((all_money/100)>=1) m1=1;
if((all_money/1000)>=1) m2=1;
if((all_money/10000)>=1) m3=1;
if(speed<2) s_a++;
else s_a=s_a;
if(s_a>200)
{
s_a=0;
t_a++;
all_distance = all_distance+10;
}
k=0;
distance=0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int main(void)
{
/* USART1 config */
USART1_Config();
SysTick_Init();
LCD_Init(); //液晶屏初始化
Adc_Init();
// sd_fs_init();
EXTI_PC2_Config(); //外部中斷測速初始化
LED_GPIO_Config(); //行駛指示燈初始化
TIM3_PWM_Init(); //pwm初始化
SPI_NRF_Init(); //無線通信初始化
NRF_RX_Mode(); //接收模式
// temperature = DS18B20_Init();
TIM2_NVIC_Configuration(); //定時器初始化
TIM2_Configuration();
START_TIME; //TIM2 開始計時
// LCD_Num_6x12_O(100, 200, 520, 8000); //在指定坐標處懸浮顯示6*12大小的數字
// LCD_Str_CH(100,20,"出租車計價器",0x0333,GRED);
// LCD_Str_CH(60,60,"單價",0x0333,0x0ff);
/// LCD_Str_CH(60,100,"行駛距離",0x0333,0x00ff);
// LCD_Str_CH(60,140,"總金額",0x0333,0x00ff);
// LCD_Str_CH(60,180,"車內溫度",0x0333,0x00ff);
LCD_Str_O(140, 20, "Taxi meter", GRED);
LCD_Str_O(60, 60, "price", GBLUE); LCD_Str_O(220, 60, "yuan/mi", GBLUE);
LCD_Str_O(60, 100, "distance", GBLUE); LCD_Str_O(220, 100, "mi", GBLUE);
LCD_Str_O(60, 140, "money", GBLUE); LCD_Str_O(220, 140, "yuan", GBLUE);
LCD_Str_O(60, 180, "WaitTime",GBLUE); LCD_Str_O(220, 180, "miao", GBLUE);
acc_z();
LCD_Line(20,50, 300, 50); //----------
LCD_Line(20,90, 300, 90);
LCD_Line(20,130, 300, 130);
LCD_Line(20,170, 300, 170);
LCD_Line(20,210, 300, 210); //----------
LCD_Line(20,50, 20, 210);
LCD_Line(300,50, 300, 210);
LCD_Num_6x12_O(180, 65, danjia_a[1], BLACK); LCD_Point(187,74); LCD_Num_6x12_O(189, 65, danjia_a[0], BLACK);
LCD_Num_6x12_O(180, 105, all_distance_a[1], BLACK); LCD_Point(187+(d1+d2+d3)*6,114); LCD_Num_6x12_O(189+(d1+d2+d3)*6, 105, all_distance_a[0], BLACK);
LCD_Num_6x12_O(180, 145, all_money_a[1], BLACK); LCD_Point(187+(m1+m2+m3)*6,154); LCD_Num_6x12_O(189+(m1+m2+m3)*6, 145, all_money_a[0], BLACK);
LCD_Num_6x12_O(180, 185, t_a*2, BLACK);
while (1)
{
t:if(flag==0) goto t;
if(q>3)
{ q=0;
LCD_Rectangle(180,50,40,150,0x00ff);
}
// calculate();
// q++;
// NRF_control();
q++;
acc_z();
LCD_Line(20,50, 300, 50); //----------
LCD_Line(20,90, 300, 90);
LCD_Line(20,130, 300, 130);
LCD_Line(20,170, 300, 170);
LCD_Line(20,210, 300, 210); //----------
LCD_Line(20,50, 20, 210);
LCD_Line(300,50, 300, 210);
LCD_Num_6x12_O(180, 65, danjia_a[1], BLACK); LCD_Point(187,74); LCD_Num_6x12_O(189, 65, danjia_a[0], BLACK);
LCD_Num_6x12_O(180, 105, all_distance_a[1], BLACK); LCD_Point(187+(d1+d2+d3)*6,114); LCD_Num_6x12_O(189+(d1+d2+d3)*6, 105, all_distance_a[0], BLACK);
LCD_Num_6x12_O(180, 145, all_money_a[1], BLACK); LCD_Point(187+(m1+m2+m3)*6,154); LCD_Num_6x12_O(189+(m1+m2+m3)*6, 145, all_money_a[0], BLACK);
LCD_Num_6x12_O(180, 185, t_a*2, BLACK);
NRF_control();
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////////
void TIM2_IRQHandler(void)
{
if ( TIM_GetITStatus(TIM2 , TIM_IT_Update) != RESET )
{
TIM_ClearITPendingBit(TIM2 , TIM_FLAG_Update);
ReadValue = GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_10);
if(ReadValue==1) GPIO_SetBits(GPIOB, GPIO_Pin_11);
else GPIO_ResetBits(GPIOB, GPIO_Pin_11);
time++;
num++;
if(time>10)
{ time=0;
calculate();
}
if(num>0&&num<500) GPIO_SetBits(GPIOC,GPIO_Pin_7);
if(num>500&&num<1000) GPIO_ResetBits(GPIOC,GPIO_Pin_7);
if(num>1000) num=0;
/* acc_z();
LCD_Line(20,50, 300, 50); //----------
LCD_Line(20,90, 300, 90);
LCD_Line(20,130, 300, 130);
LCD_Line(20,170, 300, 170);
LCD_Line(20,210, 300, 210); //----------
LCD_Line(20,50, 20, 210);
LCD_Line(300,50, 300, 210);
LCD_Num_6x12_O(180, 65, danjia, BLACK);
LCD_Num_6x12_O(180, 105,all_distance, BLACK);
LCD_Num_6x12_O(180, 145,all_money, BLACK);
LCD_Num_6x12_O(180, 185, 24, BLACK);
if(q>10)
{ q=0;
LCD_Rectangle(180,50,50,150,0x00ff);
}
*/
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void EXTI2_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line2) != RESET) //確保是否產生了EXTI Line中斷
{
k++;
EXTI_ClearITPendingBit(EXTI_Line2); //清除中斷標志位
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void EXTI3_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line3) != RESET) //確保是否產生了EXTI Line中斷
{
flag=1;
danjia=2;
EXTI_ClearITPendingBit(EXTI_Line3); //清除中斷標志位
}
}
void EXTI4_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line4) != RESET) //確保是否產生了EXTI Line中斷
{
flag=1;
danjia=1.5;
EXTI_ClearITPendingBit(EXTI_Line4); //清除中斷標志位
}
}
/******************* CHD1807 Team *****END OF FILE************/

復制代碼

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