LCD1602非阻塞显示程序51单片机

#include "lcd1602.h" #include <string.h> #define LCD1602_ROW_NUM 2u #define LCD1602_COLUMN_NUM 16u #define LCD1602_READ_DATA() (LCD1602_DATAPINS) #define LCD1602_WRITE_DATA(dat) (LCD1602_DATAPINS = (uint8_t)dat) #define LCD1602_SET_RS_H() (LCD1602_RS = 1) #define LCD1602_SET_RS_L() (LCD1602_RS = 0) #define LCD1602_SET_RW_H() (LCD1602_RW = 1) #define LCD1602_SET_RW_L() (LCD1602_RW = 0) #define LCD1602_SET_E_H() (LCD1602_E = 1) #define LCD1602_SET_E_L() (LCD1602_E = 0) typedef enum { false = 0u, true, }Bool; typedef enum { Ce_Sending = 0u, Ce_SendOK, }TeLCD1602_SendState; typedef enum { Ce_SendAddr_00 = 0u, Ce_SendData_00, Ce_SendAddr_10, Ce_SendData_10, }TeLCD1602_SendStep; typedef enum TeLCD1602_e_writeStateTypeTag { Ce_Stay_0 = 0u, Ce_Stay_1 = 1u, Ce_Stay_2 = 2u, } TeLCD1602_e_writeStateType; typedef struct TsLCD1602_h_RowParaTypeTag { const uint8_t* e_p_DisplayStartAddr; const uint8_t* e_p_DisplayEndAddr; } TsLCD1602_h_RowParaType; typedef struct TsLCD1602_h_displayParaTypeTag { TeLCD1602_SendStep e_e_SendStep; TeLCD1602_e_writeStateType e_e_WriteState; TsLCD1602_h_RowParaType e_h_RowPara[LCD1602_ROW_NUM]; uint8_t* e_p_DisplayNextAddr; } TsLCD1602_h_displayParaType; static volatile uint8_t SeLCD1602_u_displayBuffer[LCD1602_ROW_NUM][LCD1602_COLUMN_NUM]; static volatile TsLCD1602_h_displayParaType SsLCD1602_h_displayPara; static Bool MngLCD1602_IsBusy( void ); static void MngLCD1602_Display(); static TeLCD1602_SendState LcdWriteData( const uint8_t dat ); static TeLCD1602_SendState LcdWriteCom( const uint8_t com ) ; static Bool MngLCD1602_IsBusy( void ) { LCD1602_WRITE_DATA(0xff); LCD1602_SET_RS_L(); LCD1602_SET_RW_H(); if( 0 != (LCD1602_READ_DATA() & 0x80) ) { LCD1602_SET_E_L(); LCD1602_SET_E_H(); return true; } else { LCD1602_SET_E_L(); return false; } } static TeLCD1602_SendState LcdWriteCom( const uint8_t com ) { switch( SsLCD1602_h_displayPara.e_e_WriteState ) { case Ce_Stay_0: LCD1602_SET_RS_L(); LCD1602_SET_RW_L(); LCD1602_WRITE_DATA( com ); SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_1; return Ce_Sending; break; case Ce_Stay_1: LCD1602_SET_E_H(); SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_2; return Ce_Sending; break; case Ce_Stay_2: LCD1602_SET_E_L(); SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; return Ce_SendOK; break; default: SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; return Ce_SendOK; break; } } static TeLCD1602_SendState LcdWriteData( const uint8_t dat ) { switch( SsLCD1602_h_displayPara.e_e_WriteState ) { case Ce_Stay_0: LCD1602_SET_RS_H(); LCD1602_SET_RW_L(); LCD1602_WRITE_DATA( dat ); SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_1; return Ce_Sending; break; case Ce_Stay_1: LCD1602_SET_E_H(); SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_2; return Ce_Sending; break; case Ce_Stay_2: LCD1602_SET_E_L(); SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; return Ce_SendOK; break; default: SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; return Ce_SendOK; break; } } static void MngLCD1602_Display( void ) { switch(SsLCD1602_h_displayPara.e_e_SendStep) { case Ce_SendAddr_00: if(Ce_Stay_0 == SsLCD1602_h_displayPara.e_e_WriteState) { if(false == MngLCD1602_IsBusy()) { LcdWriteCom(0x80); } else { /* empty */ } } else if(Ce_SendOK == LcdWriteCom(0x80)) /* 第0,0位置开始显示 */ { SsLCD1602_h_displayPara.e_e_SendStep = Ce_SendData_00; SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; SsLCD1602_h_displayPara.e_p_DisplayNextAddr = SsLCD1602_h_displayPara.e_h_RowPara[0].e_p_DisplayStartAddr; } else { /* empty */ } break; case Ce_SendData_00: if(Ce_Stay_0 == SsLCD1602_h_displayPara.e_e_WriteState) { if(false == MngLCD1602_IsBusy()) { LcdWriteData(*SsLCD1602_h_displayPara.e_p_DisplayNextAddr); } else { /* empty */ } } else if(Ce_SendOK == LcdWriteData(*SsLCD1602_h_displayPara.e_p_DisplayNextAddr)) { SsLCD1602_h_displayPara.e_p_DisplayNextAddr++; if(SsLCD1602_h_displayPara.e_p_DisplayNextAddr > SsLCD1602_h_displayPara.e_h_RowPara[0].e_p_DisplayEndAddr) { SsLCD1602_h_displayPara.e_e_SendStep = Ce_SendAddr_10; SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; SsLCD1602_h_displayPara.e_p_DisplayNextAddr = SsLCD1602_h_displayPara.e_h_RowPara[1].e_p_DisplayStartAddr; } else { /* empty */ } } else { /* empty */ } break; case Ce_SendAddr_10: if(Ce_Stay_0 == SsLCD1602_h_displayPara.e_e_WriteState) { if(false == MngLCD1602_IsBusy()) { LcdWriteCom(0x80 + 0x40); } else { /* empty */ } } else if(Ce_SendOK == LcdWriteCom(0x80 + 0x40)) /* 第0,1位置开始显示 */ { SsLCD1602_h_displayPara.e_e_SendStep = Ce_SendData_10; SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; SsLCD1602_h_displayPara.e_p_DisplayNextAddr = SsLCD1602_h_displayPara.e_h_RowPara[1].e_p_DisplayStartAddr; } else { /* empty */ } break; case Ce_SendData_10: if(Ce_Stay_0 == SsLCD1602_h_displayPara.e_e_WriteState) { if(false == MngLCD1602_IsBusy()) { LcdWriteData(*SsLCD1602_h_displayPara.e_p_DisplayNextAddr); } else { /* empty */ } } else if(Ce_SendOK == LcdWriteData(*SsLCD1602_h_displayPara.e_p_DisplayNextAddr)) { SsLCD1602_h_displayPara.e_p_DisplayNextAddr++; if(SsLCD1602_h_displayPara.e_p_DisplayNextAddr > SsLCD1602_h_displayPara.e_h_RowPara[1].e_p_DisplayEndAddr) { SsLCD1602_h_displayPara.e_e_SendStep = Ce_SendAddr_00; SsLCD1602_h_displayPara.e_e_WriteState = Ce_Stay_0; SsLCD1602_h_displayPara.e_p_DisplayNextAddr = SsLCD1602_h_displayPara.e_h_RowPara[0].e_p_DisplayStartAddr; } else {