Revision 3:c426b4b6d888, committed 2013-07-10

Comitter:

MACRUM

Date:

Wed Jul 10 09:38:03 2013 +0000

Parent:

2:a87e255a8f3a

Commit message:

An example of GT20L16J1Y (15x16 Japanese Kanji ROM) and C12832 LCD.

Changed in this revision

diff -r a87e255a8f3a -r c426b4b6d888 main.cpp
--- a/main.cpp	Fri Oct 26 10:49:28 2012 +0000
+++ b/main.cpp	Wed Jul 10 09:38:03 2013 +0000
@@ -1,19 +1,85 @@
 #include "mbed.h"
 #include "C12832_lcd.h"
 
+unsigned char matrixdata[32];
 C12832_LCD lcd;
 
+void read_font(unsigned short code) {
+    SPI spi(p11, p12, p13); // mosi, miso, sclk
+    DigitalOut cs(p10);
+    unsigned char  c1, c2, MSB,LSB;
+    uint32_t Address, seq;
+
+    // SJIS to kuten code conversion
+    c1 = (code>>8);
+    c2 = (code & 0xFF);
+    seq = (c1<=159 ? c1-129 : c1-193)*188 + (c2<=126 ? c2-64 : c2-65);
+    MSB = seq / 94 + 1;
+    LSB = seq % 94 + 1;
+    Address = 0;
+        
+    if(     MSB >=  1 && MSB <= 15 && LSB >= 1 && LSB <= 94)
+        Address =( (MSB -  1) * 94 + (LSB - 1))*32;
+    else if(MSB >= 16 && MSB <= 47 && LSB >= 1 && LSB <= 94)
+        Address =( (MSB - 16) * 94 + (LSB - 1))*32 + 0x0AA40L;
+    else if(MSB >= 48 && MSB <= 84 && LSB >= 1 && LSB <= 94)
+        Address = ((MSB - 48) * 94 + (LSB - 1))*32 + 0x21CDFL;
+    else if(MSB == 85 &&                LSB >= 1 && LSB <= 94)
+        Address = ((MSB - 85) * 94 + (LSB - 1))*32 + 0x3C4A0L;
+    else if(MSB >= 88 && MSB <= 89 && LSB >= 1 && LSB <= 94)
+        Address = ((MSB - 88) * 94 + (LSB - 1))*32 + 0x3D060L;
+    
+    // Deselect the device
+    cs = 1;
+
+    // Setup the spi for 8 bit data, high steady state clock
+    spi.format(8,3);
+    spi.frequency(1000000); 
+    
+    // Select the device by seting chip select low
+    cs = 0;
+    spi.write(0x03);    // Read data byte
+    spi.write(Address>>16 & 0xff);
+    spi.write(Address>>8 & 0xff);
+    spi.write(Address & 0xff);
+    
+    // Send a dummy byte to receive the contents of the WHOAMI register
+    for(int i=0; i<32; i++)
+    {
+      matrixdata[i]=spi.write(0x00);
+    }
+
+    // Deselect the device
+    cs = 1;
+}
+
+
+void draw_kanji(int offset_x, int offset_y)
+{
+    int color;
+    for(int x=0; x<32; x++)
+    {
+        for(int y=0; y<8; y++)
+        {
+        if (matrixdata[x] & (1<<y))
+            color = 1;
+        else
+            color = 0;
+        lcd.pixel(x%16 + offset_x, y+(8*(x>>4)) + offset_y, color);
+        }
+    }
+    lcd.copy_to_lcd();
+}
+
 int main()
 {
-    int j=0;
+    unsigned short kbuf[16] = {0x93fa, 0x967b, 0x8cea, 0x955c, 0x8ea6};
+
     lcd.cls();
-    lcd.locate(0,3);
-    lcd.printf("mbed application board!");
 
-    while(true) {   // this is the third thread
-        lcd.locate(0,15);
-        lcd.printf("Counting : %d",j);
-        j++;
-        wait(1.0);
+    for(int i=0; i<5; i++) {
+        read_font(kbuf[i]); 
+        draw_kanji(16*i, 0);
     }
+    
 }