单片机成长之路（51基础篇） - 028 八段数码管驱动文件
写了一个方便的头文件：
1 // 作者博客：https://www.cnblogs.com/jikexianfeng/ 2 // --------------------------------------------------------------------------------------------------------------- 3 // 头文件功能简介：编写了一个驱动八段4位数码管的头文件: 4 // 所有函数都是按位操作的： 5 // led_Digital_Tube_Positioning_dynamic_display_data_int(value) // 显示整形 value 的值（带符号） 6 // led_Digital_Tube_Positioning_dynamic_display_data_float(value) // 显示浮点 value 的值（无符号） 7 // value 数据大于最大显示，显示 FFFF 8 // --------------------------------------------------------------------------------------------------------------- 9 # include "bsp.h" // 板卡的gpio宏定义，定义内容如下 10 // --------------------------------------------------------------------------------------------------------------- 11 //// lcd 数码管 12 //sfr LED_Digital_all = 0x80; 13 //sbit LED_Digital_A = P0^0; 14 //sbit LED_Digital_B = P0^1; 15 //sbit LED_Digital_C = P0^2; 16 //sbit LED_Digital_D = P0^3; 17 //sbit LED_Digital_E = P0^4; 18 //sbit LED_Digital_F = P0^5; 19 //sbit LED_Digital_G = P0^6; 20 //sbit LED_Digital_DP = P0^7; 21 22 //sbit LED_Digital_1 = P2^4; 23 //sbit LED_Digital_2 = P2^5; 24 //sbit LED_Digital_3 = P2^6; 25 //sbit LED_Digital_4 = P2^7; 26 27 28 void LED_Digital_delay_bps(int count){ 29 while(count--); 30 } 31 #define LED_Digital_delay() LED_Digital_delay_bps(400) 32 // --------------------------------------------------------------------------------------------------------------- 33 // gpio 有效电平 34 #define Low_level 0 // 低电平有效 35 #define High_level 1 // 高电平有效 36 #define led_data_Effective_level High_level // 配置数码管字符有效电平（我的板卡是高电平有效，配置为：High_level） 37 #define led_position_Effective_level High_level // 配置数码管位选有效电平（我的板卡是高电平有效，配置为：High_level） 38 // --------------------------------------------------------------------------------------------------------------- 39 // 选中 40 #define Selecteds_position_1 LED_Digital_1 = led_position_Effective_level 41 #define Selecteds_position_2 LED_Digital_2 = led_position_Effective_level 42 #define Selecteds_position_3 LED_Digital_3 = led_position_Effective_level 43 #define Selecteds_position_4 LED_Digital_4 = led_position_Effective_level 44 #define Selecteds_position_all Selecteds_position_1;Selecteds_position_2;Selecteds_position_3;Selecteds_position_4 45 // 放弃 46 #define Abandon_position_1 LED_Digital_1 = (!led_position_Effective_level) 47 #define Abandon_position_2 LED_Digital_2 = (!led_position_Effective_level) 48 #define Abandon_position_3 LED_Digital_3 = (!led_position_Effective_level) 49 #define Abandon_position_4 LED_Digital_4 = (!led_position_Effective_level) 50 #define Abandon_position_all Abandon_position_1;Abandon_position_2;Abandon_position_3;Abandon_position_4 51 // --------------------------------------------------------------------------------------------------------------- 52 // 借鉴 #include "led_device.h" 方法一: gpio 物理上连续 pin Program 53 void led_Digital_Tube_all_gpio_status_group(uchar collection,char status){ 54 // 配置 LED GPIO 55 int status_value; 56 led_data_Effective_level? (status_value = LED_Digital_all):(status_value = ~LED_Digital_all); 57 status?(status_value = status_value & (~collection)):(status_value = status_value | collection); 58 led_data_Effective_level?(LED_Digital_all=status_value):(LED_Digital_all=~status_value); 59 } 60 // group 61 #define set_led_Digital_Tube_all_gpio_status_group(collection) led_Digital_Tube_all_gpio_status_group(collection,1) 62 #define clean_led_Digital_Tube_all_gpio_status_group(collection) led_Digital_Tube_all_gpio_status_group(collection,0) 63 // 消影 64 #define led_Digital_Tube_all_Eliminate_shadow() Selecteds_position_all;clean_led_Digital_Tube_all_gpio_status_group(0xff);Abandon_position_all 65 // --------------------------------------------------------------------------------------------------------------- 66 code uchar Digital_Tube_coding[] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00,0x40,0x08}; 67 code char Digital_Tube_Decimal_point = 0x80; 68 // --------------------------------------------------------------------------------------------------------------- 69 #define Calculation_int 0 70 #define Calculation_float 1 71 #define Calculation_status Calculation_int 72 // --------------------------------------------------------------------------------------------------------------- 73 // 获取编码 74 uchar git_Digital_Tube_value_coding(char Serial_number,char sign){ 75 uchar coding_value; 76 if((0x00 <= Serial_number)&(Serial_number<0x10))coding_value = Digital_Tube_coding[Serial_number]; 77 else { 78 switch(Serial_number){ 79 case ' ':{coding_value = Digital_Tube_coding[16];}break; 80 case '-':coding_value = Digital_Tube_coding[17];break; 81 case '_':coding_value = Digital_Tube_coding[18];break; 82 } 83 } 84 if(sign)coding_value |= Digital_Tube_Decimal_point; 85 led_data_Effective_level?(coding_value = ~coding_value):(coding_value = coding_value); 86 return coding_value; 87 } 88 // 静态输出字符 89 void led_Digital_Tube_Positioning_Static_display_data(char Positioning,char value,char Decimal_point_status){ 90 led_Digital_Tube_all_Eliminate_shadow(); 91 switch(Positioning){ 92 case 0x00:{set_led_Digital_Tube_all_gpio_status_group(git_Digital_Tube_value_coding(value,Decimal_point_status));Selecteds_position_all;};break; 93 case 0x01:{set_led_Digital_Tube_all_gpio_status_group(git_Digital_Tube_value_coding(value,Decimal_point_status));Selecteds_position_1;};break; 94 case 0x02:{set_led_Digital_Tube_all_gpio_status_group(git_Digital_Tube_value_coding(value,Decimal_point_status));Selecteds_position_2;};break; 95 case 0x03:{set_led_Digital_Tube_all_gpio_status_group(git_Digital_Tube_value_coding(value,Decimal_point_status));Selecteds_position_3;};break; 96 case 0x04:{set_led_Digital_Tube_all_gpio_status_group(git_Digital_Tube_value_coding(value,Decimal_point_status));Selecteds_position_4;};break; 97 } 98 } 99 #define led_Digital_Tube_Positioning_Static_display_data_int(Positioning,value) led_Digital_Tube_Positioning_Static_display_data(Positioning,value,0) 100 #define led_Digital_Tube_Positioning_Static_display_data_float(Positioning,value,Decimal_point_status) led_Digital_Tube_Positioning_Static_display_data(Positioning,value,Decimal_point_status) 101 // --------------------------------------------------------------------------------------------------------------- 102 #include <math.h> 103 #define git_bit_data(position) (0x01<<position) // bit位获取 104 #define git_Decimal_bit_data(p) pow(10,p) 105 // --------------------------------------------------------------------------------------------------------------- 106 #define display_data_Digits_MAX 4 107 char git_display_data_Digits(int value); 108 char git_display_data_Digits(int value){ 109 int count = 0; 110 if(value <= 0)return count = 0; 111 else { 112 count = git_display_data_Digits((value/10)) + 1; 113 } 114 return count; 115 } 116 // 动态数据输出 117 led_Digital_Tube_Positioning_dynamic_display_data_process(int value,char Reserved_digits){ 118 char count; 119 for(count = 0;count <4;count++){ 120 if(count == (display_data_Digits_MAX - 1)){ 121 if(value < 0)led_Digital_Tube_Positioning_Static_display_data((count+1),'-',0); 122 else led_Digital_Tube_Positioning_Static_display_data((count+1),(abs(value)/((int)git_Decimal_bit_data(count))%10),(count?(count == Reserved_digits):count)); 123 } 124 else led_Digital_Tube_Positioning_Static_display_data((count+1),(((value<0)?(128+value):value)/((int)git_Decimal_bit_data(count))%10),(count?(count == Reserved_digits):count)); 125 } 126 } 127 #define led_Digital_Tube_Positioning_dynamic_display_data_error() led_Digital_Tube_Positioning_Static_display_data(0x00,0x0f,0) 128 129 // 动态输出整数(正负) 130 void led_Digital_Tube_Positioning_dynamic_display_data_value(int value,char Reserved_digits){ 131 if(value > (git_Decimal_bit_data(display_data_Digits_MAX-1) - 1))led_Digital_Tube_Positioning_dynamic_display_data_error(); 132 else led_Digital_Tube_Positioning_dynamic_display_data_process(value,Reserved_digits); 133 LED_Digital_delay(); 134 } 135 136 #define led_Digital_Tube_Positioning_dynamic_display_data_int(value) led_Digital_Tube_Positioning_dynamic_display_data_value(value,0) 137 #define led_Digital_Tube_Positioning_dynamic_display_data_float(value,Decimal_point_status) led_Digital_Tube_Positioning_dynamic_display_data_value(((int)(value*git_Decimal_bit_data(Decimal_point_status))),Decimal_point_status) 138 139
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默认stc51单片机举例，浮点支持不是很好，
本代码默认支持4位的八段数码管，需要扩位的自行修改代码。
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