Diff: lcd.cpp

Revision:

0:722cc5360dc3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lcd.cpp	Mon Feb 08 05:49:26 2016 +0000
@@ -0,0 +1,148 @@
+/*
+ * lcd.cpp : AQM0802A mini library
+ *
+ *  Based on LCD module "AQM0802A-RN-GBW" sample program
+ *  Copyright (c) 2013 Yoshihiro TSUBOI
+ *
+ *  Original Arduino version was developed by
+ *  Copyright (c) 2013 Masahiro WAKAYAMA at SWITCH SCIENCE
+ *
+ *  Released under the MIT License: http://mbed.org/license/mit
+ *
+ */
+
+#include "mbed.h"
+
+#include "lcd.h"
+#include "pindef.h"
+
+LCD::LCD()
+{
+  i2c = new I2C(DP_SDA, DP_SCL); // sda, scl
+}
+
+#define LCD_ADDR 0x7C
+
+void LCD::cmd(char x)
+{
+  char data[2];
+  data[0] = 0x00; // CO = 0,RS = 0
+  data[1] = x;
+  i2c->write(LCD_ADDR, data, 2);
+}
+
+void LCD::contdata(char x)
+{
+  char data[2];
+  data[0] = 0xC0; //0b11000000 CO = 1, RS = 1
+  data[1] = x;
+  i2c->write(LCD_ADDR, data, 2);
+}
+
+void LCD::lastdata(char x)
+{
+  char data[2];
+  data[0] = 0x40; //0b11000000 CO = 0, RS = 1
+  data[1] = x;
+  i2c->write(LCD_ADDR, data, 2);
+}
+
+
+void LCD::setContrast(unsigned char c) {
+  cmd(0x39);
+  cmd(0x70 | (c & 0x0f)); // contrast Low
+  cmd(0x5C | ((c >> 4) & 0x03)); // contast High/icon/power
+  cmd(0x38);
+}
+
+void LCD::init() {
+  int cont = 0;
+  wait(0.04);
+  // LCD initialize
+  cmd(0x38); // function set
+  cmd(0x39); // function set
+  cmd(0x04); // EntryModeSet
+  cmd(0x14); // interval osc
+  cmd(0x70 | (cont & 0xF)); // contrast Low
+  cmd(0x5C | ((cont >> 4) & 0x3)); // contast High/icon/power
+  cmd(0x6C); // follower control
+  wait(0.2);
+  cmd(0x38); // function set
+  cmd(0x0C); // Display On
+  cmd(0x01); // Clear Display
+  wait(0.2); // need additional wait to Clear Display
+
+  setContrast(36);
+}
+
+
+// 文字と空白で1行を埋める
+void LCD::printStrFill(const char *s)
+{
+  int idx = 0;
+  for(idx = 0; idx < 8; idx++)
+  {
+    if(idx < 7) {
+      contdata(*s);
+    } else {
+      lastdata(*s);
+    }
+    if (*s) s++;
+  }
+}
+
+void LCD::printStr(const char *s)
+{
+  int idx = 0;
+  while(*s && idx < 8) {
+    if(*(s + 1)) {
+      contdata(*s);
+    } else {
+      lastdata(*s);
+    }
+    s++;
+    idx++;
+  }
+}
+
+void LCD::setCursor(unsigned char x,unsigned char y)
+{
+  cmd(0x80 | (y * 0x40 + x));
+}
+
+void LCD::printStrY(int y,const char *s)
+{
+  setCursor(0, y);
+  printStrFill(s);
+}
+
+void LCD::printStrYscr(int y,const char *s)
+{
+  int cnt = strlen(s) - 7;
+  if (cnt <= 0)
+    cnt = 1;
+
+  for(int i = 0; i < cnt; i++)
+  {
+    setCursor(0, y);
+    printStr(s + i);
+    wait(0.5);
+  }
+}
+
+
+void LCD::printStr2(const char *s, const char *s2)
+{
+  setCursor(0,0);
+  printStrFill(s);
+  setCursor(0,1);
+  printStrFill(s2);
+}
+
+void LCD::cls(void)
+{
+    setCursor(0, 0);
+    printStrFill("");
+    setCursor(0, 1);
+    printStrFill("");
+}