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[活动专区] 【AT-START-F405测评】5.SPI驱动LCD+RTC实现电子时钟显示屏

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 楼主| yuyy1989 发表于 2024-4-28 22:45 | 显示全部楼层 |阅读模式
电子时钟, spi驱动, spi, RTC, LCD, AT32
本帖最后由 yuyy1989 于 2024-4-29 20:52 编辑

要驱动的LCD是这块
微信图片_20240428222531.jpg 微信图片_20240428222540.jpg
用到的IO口有5个，CS A0 RST MOSI SCK，其中CS A0 RST使用GPIO_output模式就行，使用AT32 Work Bench配置SPI
微信截图_20240428220304.png
使用的GPIO
微信截图_20240428220313.png
spi发送方法和LCD初始化方法
复制
  1. YUYY_HS12864G18B_DEV_Type lcd_dev;
    

  2. void lcd_spiwritebyte(spi_type *spix,uint8_t byte)
    

  3. {
    

  4.     while(spi_i2s_flag_get(spix, SPI_I2S_TDBE_FLAG) == RESET);
    

  5.     spi_i2s_data_transmit(spix,byte);
    

  6. }
    

  7. void lcd_init()
    

  8. {
    

  9.     lcd_dev.cs.gpio = LCD_CS_GPIO_PORT;
    

  10.     lcd_dev.cs.pin = LCD_CS_PIN;
    

  11.     lcd_dev.a0.gpio = LCD_A0_GPIO_PORT;
    

  12.     lcd_dev.a0.pin = LCD_A0_PIN;
    

  13.     lcd_dev.rst.gpio = LCD_RST_GPIO_PORT;
    

  14.     lcd_dev.rst.pin = LCD_RST_PIN;
    

  15.     lcd_dev.spix = SPI1;
    

  16.     lcd_dev.spi_sendbyte_func = (YUYY_HS12864G18B_SpiWriteByteFunc_Type)lcd_spiwritebyte;
    

  17.     
    

  18.     YUYY_HS12864G18B_Init(&lcd_dev);
    

  19.     YUYY_HS12864G18B_ClearScreen(&lcd_dev);
    

  20.     YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,0,0," AT32F405 TEST");
    

  21.     YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,2,0,"   LCD use SPI");
    

  22.     YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,4,0,"  bbs.21ic.com");
    

  23.     YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,6,0,"Code by yuyy1989");
    

  24.     YUYY_HS12864G18B_DisplayFinish(&lcd_dev);
    

  25. }
LCD驱动代码
复制
  1. void YUYY_HS12864G18B_writebyte(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t dat)
    

  2. {
    

  3.     if(hs12864_dev->spix)
    

  4.         hs12864_dev->spi_sendbyte_func(hs12864_dev->spix, dat);
    

  5. }
    


  6. 

  7. void YUYY_HS12864G18B_cs(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE lev)
    

  8. {
    

  9.     hs12864_dev->delayus_func(5);
    

  10.     hs12864_dev->cs_setlev_func(&(hs12864_dev->cs),lev);
    

  11.     hs12864_dev->delayus_func(5);
    

  12. }
    

  13. void YUYY_HS12864G18B_rst(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE lev)
    

  14. {
    

  15.     hs12864_dev->rst_setlev_func(&(hs12864_dev->rst),lev);
    

  16. }
    

  17. void YUYY_HS12864G18B_a0(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE lev)
    

  18. {
    

  19.     hs12864_dev->a0_setlev_func(&(hs12864_dev->a0),lev);
    

  20. }
    


  21. 

  22. /*
    

  23. * com 0指令 1数据
    

  24. */
    

  25. void YUYY_HS12864G18B_writedata(YUYY_HS12864G18B_DEV_Type *hs12864_dev,YUYY_GPIO_LEV_TYPE com,uint8_t dat)
    

  26. {
    

  27.     YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV0);
    

  28.     YUYY_HS12864G18B_a0(hs12864_dev,com);
    

  29.     YUYY_HS12864G18B_writebyte(hs12864_dev,dat);
    

  30. }
    


  31. 

  32. void YUYY_HS12864G18B_Init(YUYY_HS12864G18B_DEV_Type *hs12864_dev)
    

  33. {
    

  34.     if(!hs12864_dev->a0_setlev_func)
    

  35.         hs12864_dev->a0_setlev_func = YUYY_GPIO_SetLev;
    

  36.     if(!hs12864_dev->cs_setlev_func)
    

  37.         hs12864_dev->cs_setlev_func = YUYY_GPIO_SetLev;
    

  38.     if(!hs12864_dev->mo_setlev_func)
    

  39.         hs12864_dev->mo_setlev_func = YUYY_GPIO_SetLev;
    

  40.     if(!hs12864_dev->rst_setlev_func)
    

  41.         hs12864_dev->rst_setlev_func = YUYY_GPIO_SetLev;
    

  42.     if(!hs12864_dev->sck_setlev_func)
    

  43.         hs12864_dev->sck_setlev_func = YUYY_GPIO_SetLev;
    

  44.     if(!hs12864_dev->delayus_func)
    

  45.         hs12864_dev->delayus_func = (YUYY_DELAY_Func_Type)YUYY_DelayUs;
    

  46.         
    

  47.     YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV0);
    

  48.     YUYY_HS12864G18B_rst(hs12864_dev,YUYY_GPIO_LEV0);/*低电平复位*/ 
    

  49.     hs12864_dev->delayus_func(20);
    

  50.     YUYY_HS12864G18B_rst(hs12864_dev,YUYY_GPIO_LEV1);/*复位完毕*/ 
    

  51.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xE2);/*软复位*/ 
    

  52.     hs12864_dev->delayus_func(50);
    

  53.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x2C); /*升压步聚 1*/ 
    

  54.     hs12864_dev->delayus_func(50); 
    

  55.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x2E); /*升压步聚 2*/ 
    

  56.     hs12864_dev->delayus_func(50); 
    

  57.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x2F); /*升压步聚 3*/
    

  58.     hs12864_dev->delayus_func(50); 
    

  59.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x24); /*0x24粗调对比度，可设置范围0x20～0x27*/ 
    

  60.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x81); /*微调对比度*/ 
    

  61.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x08); /*0x28,微调对比度的值，可设置范围0x00～0x3f  1f*/ 
    

  62.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xA2); /*1/9偏压比（bias）*/ 
    

  63.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xC8); /*行扫描顺序：从上到下*/ 
    

  64.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xA0); /*列扫描顺序：从左到右*/ 
    

  65.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0x40); /*起始行：第一行开始*/ 
    

  66.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xAF); /*开显示*/ 
    

  67.     YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV1);
    

  68. }
    


  69. 

  70. void YUYY_HS12864G18B_address(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t page,uint8_t column) 
    

  71. {
    

  72.     YUYY_HS12864G18B_cs(hs12864_dev,YUYY_GPIO_LEV0);
    

  73.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,0xB0+page); //设置页地址。每页是 8行。一个画面的 64行被分成 8个页*/ 
    

  74.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,((column>>4)&0x0F)+0x10); //设置列地址的高4位 
    

  75.     YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV0,column&0x0F); //设置列地址的低4位 
    

  76. } 
    


  77. 

  78. /*全屏清屏*/ 
    

  79. void YUYY_HS12864G18B_ClearScreen(YUYY_HS12864G18B_DEV_Type *hs12864_dev) 
    

  80. { 
    

  81.     uint8_t i,j; 
    

  82.     for(i=0;i<8;i+=1) 
    

  83.     { 
    

  84.         YUYY_HS12864G18B_address(hs12864_dev,i,0); 
    

  85.         for(j=0;j<132;j+=1) 
    

  86.         { 
    

  87.             YUYY_HS12864G18B_writedata(hs12864_dev,YUYY_GPIO_LEV1,0x00); 
    

  88.         } 
    

  89.     } 
    

  90. }
    


  91. 

  92. /*显示8x16ASCII字符串*/ 
    

  93. void YUYY_HS12864G18B_DisplayString8x16(YUYY_HS12864G18B_DEV_Type *hs12864_dev,uint8_t option,uint8_t page,uint8_t column,char *text) 
    

  94. { 
    

  95.     uint8_t i=0,j; 
    

  96.     option &= 0x01;
    

  97.     while(text[i]>0x00) 
    

  98.     { 
    

  99.         if((text[i] > 0x1F)&&(text[i] < 0x7F))
    

  100.         { 
    

  101.             j=text[i]-0x20; 
    

  102.             YUYY_HS12864G18B_DisplayDatas(hs12864_dev,option,page,column,(uint8_t *)(YUYY_FONT_ASCII_TABLE_8x16+j),8,16);
    

  103.             column+=8; 
    

  104.         } 
    

  105.         i+=1; 
    

  106.     }
    

  107. }
运行效果
微信图片_20240428222545.jpg
配置RTC，设置外部低速晶振为RTC时钟源
微信截图_20240428220617.png
查看用户手册
微信截图_20240428220638.png
配置RTC
微信截图_20240429204941.png

开启唤醒中断
微信截图_20240428220832.png
在RTC初始化方法中手动使能中断
复制
  1. void wk_ertc_init(void)
    

  2. {
    

  3.   /* add user code begin ertc_init 0 */
    

  4.   /* add user code end ertc_init 0 */
    


  5. 

  6.   exint_init_type exint_init_struct;
    


  7. 

  8.   /* add user code begin ertc_init 1 */
    


  9. 

  10.   /* add user code end ertc_init 1 */
    


  11. 

  12.   pwc_battery_powered_domain_access(TRUE);
    


  13. 

  14.   crm_ertc_clock_select(CRM_ERTC_CLOCK_LEXT);
    

  15.   crm_ertc_clock_enable(TRUE);
    

  16.   ertc_reset();
    

  17.   ertc_wait_update();
    

  18.   ertc_divider_set(127, 255);
    

  19.   ertc_hour_mode_set(ERTC_HOUR_MODE_24);
    


  20. 

  21.   ertc_time_set(22, 10, 0, ERTC_24H);
    


  22. 

  23.   ertc_date_set(24, 4, 28, 7);
    


  24. 

  25.   /* configure Wakeup timer */
    

  26.   ertc_wakeup_clock_set(ERTC_WAT_CLK_CK_B_16BITS);
    

  27.   ertc_wakeup_counter_set(0);
    


  28. 

  29.   exint_default_para_init(&exint_init_struct);
    

  30.   exint_init_struct.line_enable   = TRUE;
    

  31.   exint_init_struct.line_mode     = EXINT_LINE_INTERRUPUT;
    

  32.   exint_init_struct.line_select   = EXINT_LINE_22;
    

  33.   exint_init_struct.line_polarity = EXINT_TRIGGER_RISING_EDGE;
    

  34.   exint_init(&exint_init_struct);
    

  35.   /**
    

  36.    * Users need to configure this interrupt functions according to the actual application.
    

  37.    * 1. Call the below function to enable this  interrupt.
    

  38.    *      --ertc_interrupt_enable(ERTC_WAT_INT, TRUE)
    

  39.    * 2. Add the user's interrupt handler code into the below function in the at32f402_405_int.c file.
    

  40.    *      --void ERTC_WKUP_IRQHandler (void)
    

  41.    */
    


  42. 

  43.   ertc_wakeup_enable(TRUE);  
    


  44. 

  45.   /* add user code begin ertc_init 2 */
    

  46.     ertc_interrupt_enable(ERTC_WAT_INT,TRUE);
    

  47.   /* add user code end ertc_init 2 */
    

  48. }



中断处理
复制
  1. char *WeekdayStr[7]= {"SUN","MON","TUE","WED","THU","FRI","SAT"};
    

  2. void rtc_int()
    

  3. {
    

  4.     ertc_time_type time;
    

  5.     char out[20];
    


  6. 

  7.     ertc_calendar_get(&time);
    

  8.     sprintf(out," 20%02d-%02d-%02d %s ",time.year, time.month, time.day,WeekdayStr[time.week%7]);
    

  9.     YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,0,0,out);
    

  10.     sprintf(out,"    %02d:%02d:%02d    ",time.hour, time.min, time.sec);
    

  11.     YUYY_HS12864G18B_DisplayString8x16(&lcd_dev,0,2,0,out);
    

  12. }
    

  13. void ERTC_WKUP_IRQHandler(void)
    

  14. {
    

  15.   /* add user code begin ERTC_WKUP_IRQ 0 */
    

  16.     if(ertc_flag_get(ERTC_WATF_FLAG) != RESET)
    

  17.     {
    

  18.         ertc_flag_clear(ERTC_WATF_FLAG);
    

  19.         rtc_int();
    

  20.     }
    

  21.   /* add user code end ERTC_WKUP_IRQ 0 */
    

  22.   /* add user code begin ERTC_WKUP_IRQ 1 */
    


  23. 

  24.   /* add user code end ERTC_WKUP_IRQ 1 */
    

  25. }
运行效果
WeChat_20240428222512 00_00_00-00_00_30.gif


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