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HT1621燃气抄表程序

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ID:399111发表于 2020-1-18 22:30|只看该作者回帖奖励
本人自写的燃气炒表程序，，用到HT1621驱动显示屏，希望能帮到大家

单片机源程序如下:
  1. //ICC-AVR application builder : 2005-3-3 17:58:11
  2. // Target : M8
  3. // Crystal: 4.0000Mhz
  4. //1621引线：CS:PB4  WR:PB5  Data:PB3

  6. #include< iom8v.h>
  7. #include< macros.h>
  8. #include< eeprom.h>

  10. #define WR     0B00100000//时钟线
  11. #define DATA   0B00001000//数据线
  12. #define CS     0b00010000//片选线
  13. #define P     0x80    
  14. #define data_length 8
  15. const char   seg_tab[]={0x5f,0x06,0x6b,0x2f,0x36,0x3d,0x7d,0x07,0x7f,0x3f,
  16.                  0x77,0x7c,0x59,0x6e,0x79,0x71,0x58,0x76,0x00};
  17. unsigned char disbuff[6] ={0,0,0,0,0,0};//对应LCD的6位
  18. unsigned char p1 =0;
  19. unsigned char p2 =0;


  22. unsigned long int time =0;//每一毫秒加1
  23. //1621的显存是4位*32的,故用16*8位的寄存器就能满足要求奇数显存放高4位,偶数放低4位
  24. /*****************************************************************/
  25.    //1621初始化命令
  26. const char init_tab[]={
  27.                            0b00000001,//打开系统振荡器命令
  28.                    0b00000011,//打开LCD偏压发生器命令
  29.                        0b00000101,//WDT 溢出标志输出失效命令
  30.                      0b00000110,//时基输出使能命令
  31.                      0b00011000,//系统时钟源片内RC振荡器命令
  32.                      0b00101001,//LCD1/3偏压选项4个公共口命令
  33.                      //0b01000000,//声音频率4KHz命令
  34.                      //0b00001001,//打开声音输出命令
  35.                      0b10100000,//时基/WDT 时钟输出1Hz命令
  36.                      0b10001000 //使/IRQ 输出有效命令
  37.                        };
  38.     
  39.     
  40. void send_data(unsigned char data_bus,unsigned char loop);
  41. void delayns(void);
  42. void display(void);
  43. void display_init(void);
  44. void votlageget(void);
  45. void delay(int temp);
  46. void port_init(void)
  47. {
  48. PORTB = 0xFF;
  49. DDRB  = 0B11111000;
  50. PORTC = 0x00; //m103 output only
  51. DDRC  = 0x00;
  52. PORTD = 0xFF;
  53. DDRD  = 0XFF;
  54. }
  55. void timer1_init(void)
  56. {
  57. TCCR1B = 0x00; //stop
  58. TCNT1H = 0xFE; //setup
  59. TCNT1L = 0x0C;
  60. OCR1AH = 0x01;
  61. OCR1AL = 0xF4;
  62. OCR1BH = 0x01;
  63. OCR1BL = 0xF4;
  64. ICR1H  = 0x01;
  65. ICR1L  = 0xF4;
  66. TCCR1A = 0x00;
  67. TCCR1B = 0x02; //start Timer
  68. }

  70. #pragma interrupt_handler timer1_ovf_isr:9
  71. void timer1_ovf_isr(void)     //每毫秒中断一次
  72. {
  73. //TIMER1 has overflowed
  74. TCNT1H = 0xFE; //reload counter high value
  75. TCNT1L = 0x0C; //reload counter low value
  76. time ++;

  78. disbuff[5] =time&0x0f;
  79. disbuff[4] =(time>>4)&0x0f;
  80. disbuff[3] =(time>>8)&0x0f;
  81. disbuff[2] =(time>>12)&0x0f;
  82. disbuff[1] =(time>>16)&0x0f;
  83. disbuff[0] =(time>>20)&0x0f;

  85. display();  //刷新1621的缓存
  86. }

  88. //***********************************************************************/
  89. void display_init(void)
  90. {
  91.   unsigned char t;
  92.   PORTB& =~CS;
  93.   send_data(0b10000000,3);//送3位命令模式代码100
  94.   for(t=0;t<=7;t++)
  95.   {
  96.    send_data(init_tab[t],9);//送9位命令代码
  97.   }
  98.   PORTB |=CS;
  99.   PORTB |=WR;
  100. }

  102. //***********************************************************************/
  103. void display(void)
  104. {
  105.   unsigned char t;
  106.   unsigned char seg_temp;
  107.   
  108.   PORTB& =~CS;
  109.   PORTB& =~WR;
  110.   send_data(0b10100000,3);//送3位“写 ”模式命令代码101
  111.   send_data(0,6);//送6位首地址00h
  112.   for(t=0;t<=5;t++)
  113.   {
  114.    seg_temp =seg_tab[disbuff[t]];
  115.   
  116.    send_data(seg_temp,data_length);//向显存送数据
  117.   }
  118.   PORTB |=CS;
  119.   PORTB |=WR;
  120. }

  122. //***********************************************************************/

  124. void send_data(unsigned char data_temp,unsigned char loop)
  125. {
  126.   for(;loop!=0;loop--)
  127.   {
  128.    delayns();
  129.    PORTB& =~WR;
  130.    delayns();
  131.   if((data_temp&0b10000000)==0)
  132.   {
  133.    PORTB& =~DATA;
  134.   }
  135.   else
  136.   {
  137.    PORTB |=DATA;
  138.   }
  139.    data_temp=(data_temp<<1);
  140.    PORTB |=WR;
  141.   }
  142. }
  143. //~~~~~~~~~~~~~~~~~~~~~`
  144. void delayns(void)
  145. {
  146.   asm("nop");
  147.   asm("nop");
  148.   asm("nop");
  149.   asm("nop");
  150.   asm("nop");
  151.   asm("nop");
  152. }

  154. //call this routine to initialize all peripherals
  155. void init_devices(void)
  156. {
  157. //stop errant interrupts until set up
  158. CLI(); //disable all interrupts
  159. port_init();
  160. timer1_init();
  161. TIMSK = 0x04; //timer interrupt sources
  162. SEI(); //re-enable interrupts
  163. }

  165. void main(void)
  166. {
  167.   init_devices();  //单片机初始化

  169.   display_init();  //1621初始化
  170.   while(1)
  171.   {
  172.    ;
  173.   }
  174. }
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ht1621.rar(768.63 KB, 下载次数: 21)


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