Diff: AQM1602.cpp

Revision:

0:4c3df2da124c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/AQM1602.cpp	Fri Mar 06 12:51:41 2015 +0000
@@ -0,0 +1,111 @@
+//**********************
+// AQM1602.cpp for mbed
+//
+// AQM1602 lcd(P0_5,P0_4);
+// or
+// I2C i2c(P0_5,P0_4);
+// AQM1602 lcd(i2c);
+//
+// (C)Copyright 2015 All rights reserved by Y.Onodera
+// http://einstlab.web.fc2.com
+//**********************
+
+#include "mbed.h"
+#include "AQM1602.h"
+
+AQM1602::AQM1602 (PinName sda, PinName scl) : _i2c(sda, scl) {
+    init();
+}
+AQM1602::AQM1602 (I2C& p_i2c) : _i2c(p_i2c) {
+    init();
+}
+
+void AQM1602::put(unsigned char a, unsigned char b)
+{
+    buf[0]=a;
+    buf[1]=b;
+    _i2c.write(AQM1602_ADDR, buf, 2);
+}
+
+
+void AQM1602::get(unsigned char a)
+{
+    buf[0] = a;
+    _i2c.write(AQM1602_ADDR, buf, 1, true); // no stop, repeated
+    _i2c.read( AQM1602_ADDR, buf, 1);
+
+}
+
+void AQM1602::cls()
+{
+    // Clear Display = 0x01
+    put(CMD, 0x01);
+    // Wait 1.08ms
+    wait_ms(2);
+
+}
+
+void AQM1602::locate(int x, int y)
+{
+
+    // 16x2
+    put(CMD, 0x80 + y*0x40 + x);
+
+}
+
+void AQM1602::print(const char *a)
+{
+
+    while(*a != '\0')
+    {
+        put(DAT, *a);
+        a++;
+    }
+
+}
+
+void AQM1602::init()
+{
+    // Wait 40ms
+    wait_ms(100);
+    // Function set = 0x38
+    put(CMD, 0x38);
+    // Wait 26.3us
+    wait_ms(1);
+    // Function set = 0x39
+    put(CMD, 0x39);
+    // Wait 26.3us
+    wait_ms(1);
+    // Internal OSC frequency = 0x14
+    put(CMD, 0x14);
+    // Wait 26.3us
+    wait_ms(1);
+    // Contrast set = 0x70
+    put(CMD, 0x70);
+    // Wait 26.3us
+    wait_ms(1);
+    // Power/ICON/Contrast control = 0x56
+    put(CMD, 0x56);
+    // Wait 26.3us
+    wait_ms(1);
+    // Follower control = 0x6C
+    put(CMD, 0x6C);
+    // Wait 200ms
+    wait_ms(200);
+    // Function set = 0x38
+    put(CMD, 0x38);
+    // Wait 26.3us
+    wait_ms(1);
+    // Display ON/OFF control = 0x0C
+    put(CMD, 0x0C);
+    // Wait 26.3us
+    wait_ms(1);
+    // Clear Display = 0x01
+    put(CMD, 0x01);
+    // Wait 1.08ms
+    wait_ms(2);
+
+}
+
+
+