Diff: main.cpp

Revision:

0:0543430a6bd1

Child:

1:bbac27fb013c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Jun 19 15:58:03 2013 +0000
@@ -0,0 +1,208 @@
+/*
+ *  LCD module "AQM0802A-RN-GBW" sample program
+ *
+ *  AQM0802A-RN-GBW is an I2C text LCD panel (Controller: Sitronix ST7032i)
+ *  I bought this from AKIZUKI DENSHI TSUSHO CO.,LTD.
+ *  http://akizukidenshi.com/catalog/g/gP-06669/ (Online shop page (Japanese))
+ *  http://akizukidenshi.com/download/ds/sitronix/st7032.pdf (datasheet of the chip)
+ *
+ *  Original Arduino version was developed by
+ *  Copyright (c) 2013 Masahiro WAKAYAMA at SWITCH SCIENCE
+ *
+ *  Copyright (c) 2013 Yoshihiro TSUBOI
+ *
+ *  Released under the MIT License: http://mbed.org/license/mit
+ *
+ *  revision 1.0  19-June-2013   a. 1st release
+ *
+ */
+ 
+ #include "mbed.h"
+
+I2C i2c(p28, p27); // sda, scl
+const int AQCM0802_addr = 0x7C;
+
+unsigned char mode;
+unsigned char contrast = 0; // 0-63
+unsigned char contrastFlag = false;
+int CGcounter;
+int FADEcounter;
+
+void lcd_cmd(char x) {
+  char data[2];
+  data[0] = 0x00; // CO = 0,RS = 0
+  data[1] = x;
+  i2c.write(AQCM0802_addr, data, 2);
+}
+
+void lcd_contdata(char x) {
+  char data[2];
+  data[0] = 0xC0; //0b11000000 CO = 1, RS = 1
+  data[1] = x;
+  i2c.write(AQCM0802_addr, data, 2);
+}
+
+void lcd_lastdata(char x) {
+  char data[2];
+  data[0] = 0x40; //0b11000000 CO = 0, RS = 1
+  data[1] = x;
+  i2c.write(AQCM0802_addr, data, 2);
+}
+
+void lcd_printStr(const char *s) {
+  while(*s) {
+    if(*(s + 1)) {
+      lcd_contdata(*s);
+    } else {
+      lcd_lastdata(*s);
+    }
+    s++;
+  }
+}
+
+void lcd_printHex(unsigned char num) {
+  lcd_contdata(num);
+}
+
+void lcd_init() {
+  wait(0.04);
+  // LCD initialize
+  lcd_cmd(0x38); // function set
+  lcd_cmd(0x39); // function set
+  lcd_cmd(0x04); // EntryModeSet
+  lcd_cmd(0x14); // interval osc
+  lcd_cmd(0x70 | (contrast & 0xF)); // contrast Low
+  lcd_cmd(0x5C | ((contrast >> 4) & 0x3)); // contast High/icon/power
+  lcd_cmd(0x6C); // follower control
+  wait(0.2);
+  lcd_cmd(0x38); // function set
+  lcd_cmd(0x0C); // Display On
+  lcd_cmd(0x01); // Clear Display
+  wait(0.2); // need additional wait to Clear Display
+}
+
+void lcd_setCursor(unsigned char x,unsigned char y) {
+  lcd_cmd(0x80 | (y * 0x40 + x));
+}
+
+unsigned char cg[13 * 8] = {
+/*
+  0b00001111,0b00010000,0b00010000,0b00001110,0b00000001,0b00000001,0b00011110,0b00000000,
+  0b00010001,0b00010001,0b00010001,0b00010101,0b00010101,0b00010101,0b00001010,0b00000000,
+  0b00001110,0b00000100,0b00000100,0b00000100,0b00000100,0b00000100,0b00001110,0b00000000,
+  0b00011111,0b00000100,0b00000100,0b00000100,0b00000100,0b00000100,0b00000100,0b00000000,
+  0b00001110,0b00010001,0b00010000,0b00010000,0b00010000,0b00010001,0b00001110,0b00000000,
+  0b00010001,0b00010001,0b00010001,0b00011111,0b00010001,0b00010001,0b00010001,0b00000000,
+*/
+  0x0F,0x10,0x10,0x0E,0x01,0x01,0x1E,0x00, // S
+  0x11,0x11,0x11,0x15,0x15,0x15,0x0A,0x00, // W
+  0x0E,0x40,0x40,0x40,0x40,0x40,0x0E,0x00, // I
+  0x1F,0x40,0x40,0x40,0x40,0x40,0x40,0x00, // T
+  0x0E,0x11,0x10,0x10,0x10,0x11,0x0E,0x00, // C
+  0x11,0x11,0x11,0x1F,0x11,0x11,0x11,0x00, // H
+/*
+  0b00001111,0b00010000,0b00010000,0b00001110,0b00000001,0b00000001,0b00011110,0b00000000,
+  0b00001110,0b00010001,0b00010000,0b00010000,0b00010000,0b00010001,0b00001110,0b00000000,
+  0b00001110,0b00000100,0b00000100,0b00000100,0b00000100,0b00000100,0b00001110,0b00000000,
+  0b00011111,0b00010000,0b00010000,0b00011110,0b00010000,0b00010000,0b00011111,0b00000000,
+  0b00010001,0b00010001,0b00011001,0b00010101,0b00010011,0b00010001,0b00010001,0b00000000,
+  0b00001110,0b00010001,0b00010000,0b00010000,0b00010000,0b00010001,0b00001110,0b00000000,
+  0b00011111,0b00010000,0b00010000,0b00011110,0b00010000,0b00010000,0b00011111,0b00000000,
+*/
+  0x0F,0x10,0x10,0x0E,0x01,0x01,0x1E,0x00, // S
+  0x0E,0x11,0x10,0x10,0x10,0x11,0x0E,0x00, // C
+  0x0E,0x40,0x40,0x40,0x40,0x40,0x0E,0x00, // I
+  0x1F,0x10,0x10,0x1E,0x10,0x10,0x1F,0x00, // E
+  0x11,0x11,0x19,0x15,0x13,0x11,0x11,0x00, // N
+  0x0E,0x11,0x10,0x10,0x10,0x11,0x0E,0x00, // C
+  0x1F,0x10,0x10,0x1E,0x10,0x10,0x1F,0x00  // E
+};
+
+void setCG(int src,int dst,int len) {
+  lcd_cmd(0x38);
+  lcd_cmd(0x40 + dst);
+  if (src >= 0) {
+    for (int i = 0;i < len;i++) lcd_printHex(cg[src + i]);
+  } else {
+    for (int i = 0;i < len;i++) lcd_printHex(0);
+  }
+}
+
+void setContrast(unsigned char c) {
+  lcd_cmd(0x39);
+  lcd_cmd(0x70 | (c & 0x0f)); // contrast Low
+  lcd_cmd(0x5C | ((c >> 4) & 0x03)); // contast High/icon/power
+  lcd_cmd(0x38);
+}
+
+int main() {
+    lcd_init();
+    while(1) {
+      switch(mode) {
+        case 0:  // init
+          lcd_setCursor(0, 0);
+          for (int i = 0;i < 6;i++) lcd_printHex(i);
+          lcd_setCursor(1, 1);
+          lcd_printStr("       ");
+          setCG(-1,0,6 * 8);
+          contrast = 35;
+          setContrast(contrast);
+          CGcounter = 0;
+          mode++;
+          break;
+        case 1:  // SWITCH
+          if(CGcounter <= (6 * 8)) {
+            setCG((CGcounter / 8) * 8,((CGcounter / 8) * 8) + 7 - (CGcounter % 8),CGcounter % 8);
+            CGcounter++;
+          } else {
+            lcd_setCursor(0, 0);
+            lcd_printStr("SWITCH");
+            setCG(-1,0,3 * 8);
+            lcd_setCursor(1, 1);
+            for (int i = 0;i < 3;i++) lcd_printHex(i);
+            CGcounter = 0;
+            mode++;
+          }
+          break;
+        case 2:  // SCI
+          if(CGcounter <= (3 * 8)) {
+            setCG(((CGcounter / 8) + 6) * 8,((CGcounter / 8) * 8) + 7 - (CGcounter % 8),CGcounter % 8);
+            CGcounter++;
+          } else {
+            lcd_setCursor(1, 1);
+            lcd_printStr("SCI");
+            setCG(-1,0,4 * 8);
+            lcd_setCursor(4, 1);
+            for (int i = 0;i < 4;i++) lcd_printHex(i);
+            CGcounter = 0;
+            mode++;
+          }
+          break;
+        case 3:  // ENCE
+          if(CGcounter <= (4 * 8)) {
+            setCG(((CGcounter / 8) + 9) * 8,((CGcounter / 8) * 8) + 7 - (CGcounter % 8),CGcounter % 8);
+            CGcounter++;
+          } else {
+            lcd_setCursor(4, 1);
+            lcd_printStr("ENCE");
+            FADEcounter = 0;
+            mode++;
+          }
+          break;
+        case 4:
+          if (contrastFlag == false) {
+            if (++contrast >= 54) contrastFlag = true;
+          } else {
+            if (--contrast <= 17) {
+              contrastFlag = false;
+              if(++FADEcounter >= 2) {
+                mode = 0;
+              }
+            }
+          }
+          setContrast(contrast);
+          break;
+      }
+      wait(0.05);
+    }
+}