基于CS16312控制芯片的VFD显示屏STC51单片机驱动程序

/*CS16312作为主控芯片的 VFD 显示屏驱动程序Coder : FarmanVersion : -01-07*/ #include <STC89C5xRC.H>#include "Delay.h"sbit CS16312_SDA = P2^0; // SPI 数据线sbit CS16312_SCLK = P2^1; // SPI 串行时钟sbit CS16312_STB = P2^2; // 片选信号，0-不选 1-选中。#define CS16312_SDA_HIGH 1#define CS16312_SCLK_HIGH 1#define CS16312_STB_HIGH 1//--------------------------------------------------------void CS16312_delay(){nop_();//Delay1ms();}//----------------------------------------------------------void CS16312_enable(){CS16312_STB = !CS16312_STB_HIGH;CS16312_delay();}void CS16312_disable(){CS16312_STB = CS16312_STB_HIGH;CS16312_delay();}void CS16312_write_byte(unsigned char byte_to_write){unsigned char mask = 0x01;unsigned char n;for(n=0; n<8; n++){CS16312_SCLK =!CS16312_SCLK_HIGH;CS16312_delay();CS16312_SDA = (mask & byte_to_write) ? 1 : 0; CS16312_delay();CS16312_SCLK = CS16312_SCLK_HIGH;CS16312_delay();mask += mask;}return;}void CS16312_write_command_byte(unsigned char command_byte){CS16312_enable();CS16312_write_byte(command_byte);CS16312_disable();}//----------------------------------------------------------// digits_could_display : 8 - 16// 命令前必须有一次 STB 有效，// 命令后必须有一次 STB 释放。void CS16312_command1(unsigned char digits_could_display){CS16312_write_command_byte(digits_could_display - 4);}// 命令前必须有一次 STB 有效，// 命令后必须有一次 STB 释放。void CS16312_command2(bit enable_inc_addr_after_write){unsigned char command = 0x40;command += enable_inc_addr_after_write ? 0x00 : 0x04;CS16312_write_command_byte(command); }// addr : 0x00 - 0x15// 该命令后面要紧跟写入显示RAM的数据，且该命令与数据之间不允许有 STB 释放操作// 数据与数据之间也不允许有 STB 释放。//// 所以，在该命令前要 调用一次 CS16312_enable()// 所有的显示RAM传输结束后，调用一次 CS16312_disable().void CS16312_command3(unsigned char RAM_addr_to_write){CS16312_write_byte(0xC0 + RAM_addr_to_write);}// 命令前必须有一次 STB 有效，// 命令后必须有一次 STB 释放。// bright : 0 - 7void CS16312_command4(bit enable_display, unsigned char bright){CS16312_write_command_byte((enable_display ? 0x88 : 0x80) + bright);}//----------------------------------------------------------void CS16312_write_display_RAM(unsigned char addr, unsigned char display_data_byte){CS16312_enable();CS16312_command3(addr);CS16312_write_byte(display_data_byte);CS16312_disable();}void CS16312_fill_display(unsigned char pattern){unsigned char m;CS16312_command2(1);CS16312_enable();CS16312_command3(0);for(m=0x00; m<0x16; m++){CS16312_write_byte(pattern);}CS16312_disable();}//----------------------------------------------------------code unsigned char CS16312_8seg_digit[] ={0x77, 0x24, 0x6B, 0x6D, 0x3C, 0x5D, 0x5F, 0x64, 0x7F, 0x7D};// pos 0-6 digit:0-9// 因为倒数第2个数字的段码与其他的不同，需要单独处理。此处未处理。// 在 CS1632_show_byte_as_BCD 中进行了处理void CS16312_show_8seg_digit(unsigned char pos, unsigned char digit, bit with_dot){if(pos == 2 || pos == 4){CS16312_write_display_RAM(6-pos, CS16312_8seg_digit[digit] + (with_dot ? 0x80 : 0x00));}else{CS16312_write_display_RAM(6-pos, CS16312_8seg_digit[digit]);}}code unsigned char CS16312_special_digit[] ={0x77, 0x24, 0x6B, 0x6D, 0x3C, 0x5D, 0x5F, 0x64, 0x7F, 0x7D};// pos 0-3 BCD:0x00-0x99void CS1632_show_byte_as_BCD(unsigned char pos, unsigned char bcd, bit with_dot){if(pos == 0){CS16312_show_8seg_digit(0, bcd&0x0F, 0);}else if(pos == 3){ // 写右边起第2个数字CS16312_write_display_RAM(1, CS16312_special_digit[bcd>>4]>>1);// 写右边起第1个数字CS16312_write_display_RAM(0, (CS16312_special_digit[bcd>>4] & 0x01) ?(CS16312_8seg_digit[bcd&0x0F] | 0x80) : (CS16312_8seg_digit[bcd&0x0F] | 0x00));}else{CS16312_show_8seg_digit(2*pos-1, bcd>>4, with_dot);CS16312_show_8seg_digit(2*pos, bcd&0x0F, with_dot);}}void CS16312_show_disk(unsigned int pattern){CS16312_write_display_RAM(8, pattern>>8);CS16312_write_display_RAM(9, pattern>>8);}//----------------------------------------------------------void CS16312_init(){CS16312_disable();CS16312_SCLK = 0;CS16312_SDA = 1;Delay200ms();CS16312_command1(5);CS16312_command2(1);CS16312_fill_display(0xFF);CS16312_command4(1, 3);}//----------------------------------------------------------void CS16312_main() {unsigned char m, n, seg;CS16312_init();CS16312_fill_display(0xFF); Delay200ms();CS16312_fill_display(0x00); Delay200ms();CS16312_fill_display(0xFF); Delay200ms();CS16312_fill_display(0x00); Delay200ms();CS16312_fill_display(0xFF); Delay200ms();CS16312_fill_display(0x00); Delay200ms();while(0){CS16312_show_disk(0x5555); Delay200ms();CS16312_show_disk(0xAAAA); Delay200ms();}while(1){seg = 0x01;for(m=0; m<10; m++){CS1632_show_byte_as_BCD(0, m*0x11, 1); CS1632_show_byte_as_BCD(1, m*0x11, 1); CS1632_show_byte_as_BCD(2, m*0x11, 1); CS1632_show_byte_as_BCD(3, m*0x11, 1);Delay1s();} Delay1s();} }