main.cpp

00001 #include "mbed.h"
00002 #include "bitmap.h"
00003 
00004 #define NOP                 0x00
00005 #define Function_Set        0x20
00006 #define Display_Control     0x08
00007 #define Set_Y_Address       0x40
00008 #define Set_X_Address       0x80
00009 #define Set_V0              0x80
00010 #define Set_Test_Mode       0x30
00011 
00012 DigitalOut SCK_pin(D13);   // SPI clock
00013 DigitalOut SDI_pin(D11);   // SPI MOSI
00014 DigitalOut DC_pin(D10);    // Data/command selector
00015 DigitalOut RST_pin(D9);    // HW Reset
00016 DigitalOut CS_pin(D8);     // SPI chip select
00017 
00018 
00019 void LCDShiftWrite(unsigned char dat)
00020 {
00021     unsigned char i;
00022     unsigned char Series,Temp;
00023     SCK_pin = false;
00024     Series = dat;
00025     for(i=0; i<8; i++) {
00026         SCK_pin = false;
00027         Temp=Series & 0x80;
00028         if(Temp) {
00029             SDI_pin = true;
00030         } else {
00031             SDI_pin = false;
00032         }
00033         SCK_pin = true;
00034         Series = Series << 1;
00035     }
00036 }
00037 
00038 
00039 void send_cmd(unsigned char cmd, unsigned char dat)
00040 {
00041     DC_pin = false; //digitalWrite(RSX,LOW);
00042     CS_pin = false; //digitalWrite(CSX,LOW);
00043     LCDShiftWrite(cmd|dat);
00044     CS_pin = true;  //digitalWrite(CSX,HIGH);
00045     DC_pin = true;  //digitalWrite(RSX,HIGH);
00046 }
00047 
00048 void send_dat(unsigned char dat)
00049 {
00050     DC_pin = true;  //digitalWrite(RSX,HIGH);
00051     CS_pin = false; //digitalWrite(CSX,LOW);
00052     LCDShiftWrite(dat);
00053     CS_pin = true;  //digitalWrite(CSX,HIGH);
00054 }
00055 
00056 
00057 void LCDInit()
00058 {
00059     RST_pin = false; //digitalWrite(RESX,LOW);
00060     wait_ms(10);
00061     RST_pin = true;  //digitalWrite(RESX,HIGH);
00062     wait_ms(100);
00063     send_cmd(Function_Set,0x01);
00064     send_cmd(Set_V0,0x20);
00065     send_cmd(Set_Test_Mode,0x02);
00066     send_cmd(Function_Set,0x00);
00067     send_cmd(Display_Control,0x04);
00068 }
00069 
00070 void LCD_set_XY(unsigned char x,unsigned char y)
00071 {
00072     send_cmd(Set_X_Address,x);
00073     send_cmd(Set_Y_Address,y);
00074 }
00075 
00076 void cls(void)
00077 {
00078     int i;
00079     send_cmd(Set_X_Address,0);
00080     send_cmd(Set_Y_Address,0);
00081     for(i=0; i<960; i++)
00082         send_dat(0x00);
00083     send_cmd(Set_X_Address,0);
00084     send_cmd(Set_Y_Address,0);
00085 }
00086 
00087 void putch(unsigned char x, unsigned char y, unsigned int ch)
00088 {
00089     unsigned char i;
00090     send_cmd(Set_X_Address,x);
00091     send_cmd(Set_Y_Address,y);
00092     for(i=0; i<5; i++)
00093         send_dat(FONT[(ch-0x20)*5+i]);
00094 }
00095 
00096 void putstr(unsigned char x, unsigned char y, char *str)
00097 {
00098     while(*str!=0) {
00099         putch(x,y,*str++);
00100         x=x+6;
00101     }
00102 }
00103 
00104 void SHOW_BMP()
00105 {
00106     unsigned int i,j,n=0;
00107     for(i=0; i<8; i++) {
00108         for(j=0; j<96; j++) {
00109             send_cmd(Set_Y_Address,7-i);
00110             send_cmd(Set_X_Address,j);
00111             send_dat(BMP[n++]);
00112         }
00113     }
00114 }
00115 
00116 void SHOW_ICO()
00117 {
00118     unsigned char i;
00119     for(i=0; i<96; i++) {
00120         send_cmd(Set_Y_Address,8);
00121         send_cmd(Set_X_Address,i);
00122         send_dat(0xFF);
00123     }
00124 }
00125 
00126 void SHOW_LINE()
00127 {
00128     unsigned int i,j;
00129     const unsigned char line[8] = {
00130         0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80
00131     };
00132     for(i=0; i<8; i++) {
00133         send_cmd(Set_Y_Address,7-i);
00134         for(j=0; j<8; j++) {
00135             send_cmd(Set_X_Address,j+8*i);
00136             send_dat(line[j]);
00137         }
00138     }
00139 }
00140 
00141 int main()
00142 {
00143 
00144     LCDInit();
00145 
00146 
00147     while(1) {
00148         SHOW_ICO();
00149         putstr(30,5,"ST7585");
00150         putstr(15,3,"96*64 GLCD");
00151         putstr(10,1,"ARM Mbed demo");
00152         wait_ms(5000);
00153         cls();
00154         SHOW_LINE();
00155         wait_ms(5000);
00156         cls();
00157 
00158         SHOW_BMP();
00159         wait_ms(5000);
00160         cls();
00161     }
00162 }
00163