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main.cpp
00001 #include "mbed.h" 00002 #include "NewTextLCD.h" 00003 DigitalOut rs(D12); 00004 DigitalOut e(D11); 00005 DigitalOut d0(D10); 00006 DigitalOut d1(D9); 00007 DigitalOut d2(D8); 00008 DigitalOut d3(D7); 00009 DigitalOut d4(D6); 00010 DigitalOut d5(D5); 00011 DigitalOut d6(D4); 00012 DigitalOut d7(D3); 00013 00014 void write_data_to_port(uint8_t data) 00015 { 00016 d0=((data>>0)& 0x01); 00017 d1=((data>>1)& 0x01); 00018 d2=((data>>2)& 0x01); 00019 d3=((data>>3)& 0x01); 00020 d4=((data>>4)& 0x01); 00021 d5=((data>>5)& 0x01); 00022 d6=((data>>6)& 0x01); 00023 d7=((data>>7)& 0x01); 00024 } 00025 void send_data(uint8_t data) 00026 { 00027 rs=1; 00028 write_data_to_port(data); 00029 e=1; 00030 wait(0.04f); 00031 e=0; 00032 } 00033 00034 void send_command(uint8_t command) 00035 { 00036 rs=0; 00037 write_data_to_port(command); 00038 e=1; 00039 wait(0.04f); 00040 e=0; 00041 } 00042 00043 void init_lcd(void) 00044 { 00045 wait(0.02f); 00046 send_command(0b00110000); 00047 send_command(0b00110000); 00048 send_command(0b00110000); 00049 send_command(0b00111000); 00050 send_command(0b00001111); 00051 send_command(0b00000001); 00052 send_command(0b00000110); 00053 send_command(0b00000010); 00054 } 00055 00056 void lcd_set_address(uint8_t address) 00057 { 00058 send_command(0b10000000 | address); 00059 } 00060 00061 void write_string(char * str) 00062 { 00063 do { 00064 send_data(*str); 00065 } while (*++str); 00066 } 00067 00068 void clear_string() 00069 { 00070 int clear=80; 00071 00072 for(int i=0; i<(clear);i++){ 00073 write_string(" "); 00074 } 00075 } 00076 00077 00078 00079 int main() 00080 { 00081 00082 init_lcd(); 00083 while(1){ 00084 write_string("405 A"); 00085 clear_string(); 00086 for(int i=0; i<6;i++){ 00087 write_string(" "); 00088 } 00089 write_string("405 A"); 00090 clear_string(); 00091 for(int i=0; i<19;i++){ 00092 write_string(" "); 00093 } 00094 write_string("405 A"); 00095 clear_string(); 00096 } 00097 }
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