基于GD32F450的图标式多功能应用系统（续）

设计中的一些关键函数及程序代码如下：

（1）温湿度检测程序

温湿度检测的程序代码为：

1. i=0;
   
2. POINT_COLOR=RED;
   
3. BACK_COLOR=WHITE;       //BLACK
   
4. DHT11_Init();
   
5. while(SET == gpio_input_bit_get(GPIOA,GPIO_PIN_0)) // 确认
   
6. {
   
7.     DHT11_Read_Data(&temp,&humi);
   
8. LCD_ShowCharh(100,100,'T',1);
   
9. LCD_ShowCharh(100,90,'e',1);
   
10. LCD_ShowCharh(100,80,'m',1);
    
11. LCD_ShowCharh(100,70,'p',1);
    
12. LCD_ShowCharh(100,60,':',1);
    
13. LCD_ShowCharh(100,50,temp/10+'0',0);
    
14. LCD_ShowCharh(100,40,temp%10+'0',0);
    
15. LCD_ShowCharh(120,100,'H',1);
    
16. LCD_ShowCharh(120,90,'u',1);
    
17. LCD_ShowCharh(120,80,'m',1);
    
18. LCD_ShowCharh(120,70,'i',1);
    
19. LCD_ShowCharh(120,60,':',1);
    
20. LCD_ShowCharh(120,50,humi/10+'0',0);
    
21. LCD_ShowCharh(120,40,humi%10+'0',0);
    
22. delay_1ms(200);
    
23.   }

（2）波形曲线绘制

曲线绘制的程序代码为：

1. adc_config();
   
2. adc_resolution_config(ADC1,ADC_RESOLUTION_12B);
   
3. adc_oversample_mode_config(ADC1,ADC_OVERSAMPLING_ALL_CONVERT,ADC_OVERSAMPLING_SHIFT_NONE,ADC_OVERSAMPLING_SHIFT_NONE);
   
4.     adc_oversample_mode_disable(ADC1);
   
5. while(SET == gpio_input_bit_get(GPIOA,GPIO_PIN_0))
   
6. {
   
7. LCD_Clear(WHITE);
   
8.     sp=95;
   
9.     POINT_COLOR=RED;
   
10.     LCD_DrawLine(10, 304, 230, 304);
    
11.     LCD_DrawLine(125, 10, 125, 304);  
    
12.     POINT_COLOR=BLUE;
    
13.             for ( i = 0 ; i < 64; i++)
    
14.     {
    
15.   adc_enable(ADC1);
    
16.               adc_software_trigger_enable(ADC1,ADC_REGULAR_CHANNEL);
    
17.   while(RESET == adc_flag_get(ADC1,ADC_FLAG_EOC));
    
18.   sj=ADC_RDATA(ADC1);
    
19.   sj=sj/10;
    
20.   LCD_DrawLine(320-sp, 300-4*(i-1), 320-sj, 300-4*(i));
    
21.   sp=sj;
    
22.   delay_1ms(20);
    
23.             }
    
24. }

（3）图像显示

图标显示函数为：

1. void show_tbh(unsigned int x,unsigned int y,unsigned int n) //200*200
   
2. {  
   
3. unsigned int i,j,k;
   
4. unsigned int da;
   
5. k=0;
   
6. for(i=0;i<50;i++)
   
7. {
   
8. for(j=0;j<50;j++)
   
9. {
   
10. if(n==0) da=gImage_tb[k*2];
    
11. if(n==1) da=gImage_pwm[k*2];
    
12. if(n==2) da=gImage_rtc[k*2];
    
13. if(n==3) da=gImage_adc[k*2];
    
14. if(n==4) da=gImage_tft[k*2];
    
15. if(n==5) da=gImage_sz[k*2];
    
16. if(n==6) da=gImage_kz[k*2];
    
17. if(n==7) da=gImage_dht[k*2];
    
18.             da<<=8;
    
19. if(n==0) da|=gImage_tb[k*2+1];
    
20. if(n==1) da|=gImage_pwm[k*2+1];
    
21. if(n==2) da|=gImage_rtc[k*2+1];
    
22. if(n==3) da|=gImage_adc[k*2+1];
    
23. if(n==4) da|=gImage_tft[k*2+1];
    
24. if(n==5) da|=gImage_sz[k*2+1];
    
25. if(n==6) da|=gImage_kz[k*2+1];
    
26. if(n==7) da|=gImage_dht[k*2+1];
    
27. POINT_COLOR=da;
    
28. LCD_DrawPoint(x+i,y+j);
    
29. k++;  
    
30. }
    
31. }
    
32. }

图像显示函数为：

1. void show_pic(const unsigned char *p)
   
2. {
   
3. int i,j;
   
4. unsigned char picH,picL;
   
5. Address_set(0,0,LCD_W-1,LCD_H-1);
   
6. for(i=0;i<240;i++)
   
7. {
   
8.   for(j=0;j<320;j++)
   
9.   {
   
10.   picH=*p++;
    
11.   picL=*p++;
    
12.   LCD_WR_DATA8(picH);
    
13.   LCD_WR_DATA8(picL);
    
14.   }
    
15. }
    
16. }

（4）MP3播放程序

通过串口来控制MP3播放模块的指令是存放在数值中，其定义如下：

uint8_t aTxBuffer[] = " **** UART_TwoBoards_ComPolling **** ";

uint8_t cmd[]  = {0X7E, 0xFF, 0x06, 0X0D, 00, 00, 00, 0xFE, 0xEE, 0XEF}; //play

uint8_t cmd1[] = {0X7E, 0xFF, 0x06, 0X01, 00, 00, 00, 0xFE, 0xFA, 0XEF}; //next

uint8_t cmd2[] = {0X7E, 0xFF, 0x06, 0X02, 00, 00, 00, 0xFE, 0xF9, 0XEF}; //previous

uint8_t cmd3[] = {0X7E, 0xFF, 0x06, 0X03, 00, 00, 01, 0xFE, 0xF7, 0XEF}; //*play index

uint8_t cmd4[] = {0X7E, 0xFF, 0x06, 0X0E, 00, 00, 00, 0xFE, 0xED, 0XEF}; //pause

uint8_t cmd5[] = {0X7E, 0xFF, 0x06, 0X16, 00, 00, 00, 0xFE, 0xE5, 0XEF}; //stop

uint8_t cmd6[] = {0X7E, 0xFF, 0x06, 0X06, 00, 00, 10, 0xFE, 0xE5, 0XEF}; //*set  Volume

串行通讯的初始化函数为：

1. void usb_to_uart_init(void)
   
2. {
   
3.    // enable GPIO clock
   
4.    rcu_periph_clock_enable(RCU_GPIOD);
   
5.    // enable USART clock
   
6.    rcu_periph_clock_enable(RCU_USART1);
   
7.    // connect port to USARTx_Tx
   
8.    gpio_af_set(GPIOD, GPIO_AF_7, GPIO_PIN_5);
   
9.    // connect port to USARTx_Rx
   
10.    gpio_af_set(GPIOD, GPIO_AF_7, GPIO_PIN_6);
    
11.    // configure USART Tx as alternate function push-pull
    
12.    gpio_mode_set(GPIOD, GPIO_MODE_AF, GPIO_PUPD_PULLUP,GPIO_PIN_5);
    
13.    gpio_output_options_set(GPIOD,GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,GPIO_PIN_5);
    
14.    // configure USART Rx as alternate function push-pull
    
15.    gpio_mode_set(GPIOD, GPIO_MODE_AF, GPIO_PUPD_PULLUP,GPIO_PIN_6);
    
16.    gpio_output_options_set(GPIOD, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ,GPIO_PIN_6);
    
17.    // USART configure
    
18.    usart_deinit(USART1);
    
19.    usart_baudrate_set(USART1, 9600U);  
    
20.    usart_receive_config(USART1, USART_RECEIVE_ENABLE);
    
21.    usart_transmit_config(USART1, USART_TRANSMIT_ENABLE);
    
22.    usart_word_length_set(USART1, USART_WL_8BIT);
    
23.    usart_stop_bit_set(USART1, USART_STB_1BIT);
    
24.    usart_parity_config(USART1, USART_PM_NONE);
    
25.    usart_enable(USART1);
    
26. }

发送播放指令的函数为：

1. void playn(uint16_t index) //play index
   
2. {
   
3. int i;
   
4. uint8_t checksum = 0;
   
5. cmd3[5] = (uint8_t)(index >> 8);
   
6. cmd3[6] = (uint8_t)(index);
   
7. for (i=2; i<8; i++)
   
8. {
   
9. checksum += cmd3[i];
   
10. }
    
11. cmd3[8] = (uint8_t)~checksum;
    
12. }

发送音量指令的函数为：

1. void setVolume(uint8_t index) //setVolume index
   
2. {
   
3. uint8_t checksum = 0;
   
4. int i;
   
5. cmd6[6] = (uint8_t)(index);
   
6. for (i=2; i<8; i++)
   
7. {
   
8. checksum += cmd6[i];
   
9. }
   
10. cmd6[8] = (uint8_t)~checksum;
    
11. }

资料很详细

多谢支持！ ！ ！