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#include <SPI.h>
#include "U8glib.h"
unsigned char name0[8] = {0xC4, 0xE3, 0xBA, 0xC3, 0xCA, 0xC0, 0xBD, 0xE7};
unsigned char name1[12] = {0x48, 0x45, 0x4C, 0x4C, 0x4F, 0x2C, 0x57, 0x4F, 0x52, 0x4C, 0x44, 0x21};
/*===================================================================
以下函数由arduinoCN坛友NoComment提供表示感谢
这是他的github:https://github.com/XAS-712/gt20l16s1y
===================================================================*/
U8GLIB_SSD1306_ADAFRUIT_128X64 u8g(10, 9); // HW SPI Com: CS = 10, A0 = 9 (Hardware Pins are SCK = 13 and MOSI = 11) //[重要]注意u8g的配置要与以下4行匹配 必须要保证设备名为u8g
#define CS 8 //字库数据输出
#define SO 12 //字库片选
#define SI 11 //MOSI(数据线)
#define CL 13 //CLK(时钟)
long getAddr(uint16_t str)
{ byte hb = (byte)((str & 0xff00) >> 8);
byte lb = (byte)(str & 0x00ff);
Serial.print("HB ");
Serial.print(hb, HEX);
Serial.print(" LB ");
Serial.println(lb, HEX);
long Address;
if (hb > 0xA0 && lb > 0xA0)//is GB2312
{ long BaseAdd = 0;
if (hb == 0xA9 && lb >= 0xA1)
{ Address = (282 + (lb - 0xA1 ));//8位机在此出现了溢出，所以分三步
Address = Address * 32;
Address += BaseAdd;
}
else if (hb >= 0xA1 && hb <= 0xA3 && lb >= 0xA1)
{ Address = ((hb - 0xA1) * 94 + (lb - 0xA1));
Address = Address * 32;
Address += BaseAdd;
}
else if (hb >= 0xB0 && hb <= 0xF7 && lb >= 0xA1)
{ Address = ((hb - 0xB0) * 94 + (lb - 0xA1) + 846);
Address = Address * 32;
Address += BaseAdd;
}
} else {//is ASCII
long BaseAdd = 0x03b7c0;
if (lb >= 0x20 && lb <= 0x7E)
{ Address = (lb - 0x20 ) * 16 + BaseAdd;
}
}
return Address;
}
byte revBit(byte input)
{ byte output = 0;
for (int i = 0; i < 8; i++)
{ if (input & (1 << i))
output |= 1 << (7 - i);
}
return output;
}
void fetchBitmap16(long address, byte *p)
{ byte hb = (byte)((address & 0x00ff0000) >> 16);
byte mb = (byte)((address & 0x0000ff00) >> 8);
byte lb = (byte)(address & 0x000000ff);
digitalWrite(CS, LOW);//选通字库
SPI.transfer(0x0b);//移入命令字
SPI.transfer(hb);//移入地址次高位
SPI.transfer(mb);//移入地址次低位
SPI.transfer(lb);//移入地址最低位
SPI.transfer(0x8d);//移入dummy byte
for (int i = 0; i < 16; i++)
{ byte buf = SPI.transfer(0x00); //读出16bytes
p[i] = revBit(buf);
}
digitalWrite(CS, HIGH);//反选通字库
}
void fetchBitmap32(long address, byte *p)
{ byte hb = (byte)((address & 0x00ff0000) >> 16);
byte mb = (byte)((address & 0x0000ff00) >> 8);
byte lb = (byte)(address & 0x000000ff);
digitalWrite(CS, LOW);//选通字库
SPI.transfer(0x0b);//移入命令字
SPI.transfer(hb);//移入地址次高位
SPI.transfer(mb);//移入地址次低位
SPI.transfer(lb);//移入地址最低位
SPI.transfer(0x8d);//移入dummy byte
for (int i = 0; i < 32; i++)
{ byte buf = SPI.transfer(0x00); //读出32bytes
p[i] = revBit(buf);
}
digitalWrite(CS, HIGH);//反选通字库
}
void drawV8P(int x, int y, byte b)
{ if ((b & 0x80) == 0x80)
u8g.drawPixel(x, y);
if ((b & 0x40) == 0x40)
u8g.drawPixel(x, y + 1);
if ((b & 0x20) == 0x20)
u8g.drawPixel(x, y + 2);
if ((b & 0x10) == 0x10)
u8g.drawPixel(x, y + 3);
if ((b & 0x08) == 0x08)
u8g.drawPixel(x, y + 4);
if ((b & 0x04) == 0x04)
u8g.drawPixel(x, y + 5);
if ((b & 0x02) == 0x02)
u8g.drawPixel(x, y + 6);
if ((b & 0x01) == 0x01)
u8g.drawPixel(x, y + 7);
}
void draw8x16(int x, int y, byte *b)
{ int i;
for (i = 0; i < 8; i++)
{ drawV8P(x + i, y, b[i]);
}
for (i = 0; i < 8; i++)
{ drawV8P(x + i, y + 8, b[i + 8]);
}
}
void draw16x16(int x, int y, byte *b)
{ int i;
for (i = 0; i < 16; i++)
{ drawV8P(x + i, y, b[i]);
}
for (i = 0; i < 16; i++)
{ drawV8P(x + i, y + 8, b[i + 16]);
}
}
void displayStr(int x, int y, int len, unsigned char *c)
{ int i;
for (i = 0; i < len; i++)
{ if (c[i] > 0xA0) //is GB2312
{ int code = (int)(c[i] * 256) + (int)c[i + 1];
byte bmp[32];
fetchBitmap32(getAddr(code), bmp);
draw16x16(x, y, bmp);
x += 16;
i++;
} else
{ //is ASCII
int code = (int)c[i];
byte bmp[16];
fetchBitmap16(getAddr(code), bmp);
draw8x16(x, y, bmp);
x += 8;
}
}
}
void displayStrC(int row, int len, unsigned char *c)
{ int x = 64 - ((len * 8) / 2);
displayStr(x, row, len, c);
}
/*===================================================================
以上函数由arduinoCN坛友NoComment提供表示感谢
这是他的github:https://github.com/XAS-712/gt20l16s1y
===================================================================*/
void setup(void)
{ pinMode(8, OUTPUT); //字库数据输出
}
void loop(void)
{ // picture loop
u8g.firstPage();
do
{ displayStr(0, 0, 8, name0); //你好世界
displayStr(0, 16, 12, name1); //HELLO,WORLD!
} while ( u8g.nextPage() );
// rebuild the picture after some delay
//delay(50);
} |
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发表于 2019-12-18 16:50