takahiro maeda
秋月電子 Ｉ２Ｃ接続キャラクタＬＣＤモジュール用にI2CLCDライブラリを修正しました。 Modified I2CLCD Lib for ACM1602NI character LCD module. http://akizukidenshi.com/catalog/g/gP-05693/
Revision 0:9bf010140a3f, committed 2013-10-20
- Comitter:
- maro
- Date:
- Sun Oct 20 03:44:57 2013 +0000
- Commit message:
- Changed the waiting time of writeCommand and writeData
Changed in this revision
diff -r 000000000000 -r 9bf010140a3f I2cLCD16_ACM1601NI/I2cLCD.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/I2cLCD16_ACM1601NI/I2cLCD.cpp Sun Oct 20 03:44:57 2013 +0000
@@ -0,0 +1,120 @@
+//8x2 lcd
+#include "I2cLCD.h"
+#include "mbed.h"
+
+#define I2CLCD_ADDR 0xa0//0x7C
+
+#define RS_CMD 0x00
+#define RS_DATA 0x80
+const short WAIT1 = 10;
+
+I2cLCD::I2cLCD(PinName sda, PinName scl) : _i2c( sda , scl ){
+ //_i2c.frequency(50000);
+ wait_ms(15);
+ writeCommand(0x01);
+ wait_ms(5);
+ writeCommand(0x38);
+ wait_ms(5);
+ writeCommand(0x0f);
+ wait_ms(5);
+ writeCommand(0x06);
+ wait_ms(5);
+ writeCommand(0x0c);
+ wait_ms(5);
+}
+
+
+
+void I2cLCD::character(int column, int row, int c) {
+ int a = address(column, row);
+ writeCommand(a);
+ writeData(c);
+}
+
+void I2cLCD::cls() {
+ writeCommand(0x01); // cls, and set cursor to 0
+ wait_ms(2);
+ locate(0, 0);
+}
+
+void I2cLCD::locate(int column, int row) {
+ _column = column;
+ _row = row;
+}
+
+int I2cLCD::_putc(int value) {
+ if (value == '\n') {
+ _column = 0;
+ _row++;
+ if (_row >= rows()) {
+ _row = 0;
+ }
+ } else {
+ character(_column, _row, value);
+ _column++;
+ if (_column >= columns()) {
+ _column = 0;
+ _row++;
+ if (_row >= rows()) {
+ _row = 0;
+ }
+ }
+ }
+ return value;
+}
+
+int I2cLCD::_getc() {
+ return -1;
+}
+
+void I2cLCD::writeCommand( int cmd )
+{
+ char cmds[2];
+
+ cmds[0] = RS_CMD;
+ cmds[1] = cmd;
+
+ //_i2c.write(I2CLCD_ADDR, cmds, 2);
+ _i2c.start();
+ wait_us(9);
+ _i2c.write(I2CLCD_ADDR);
+ wait_us(WAIT1);
+ _i2c.write(cmds[0]);
+ wait_us(WAIT1);
+ _i2c.write(cmds[1]);
+ wait_us(WAIT1);
+ _i2c.stop();
+}
+
+void I2cLCD::writeData( int data )
+{
+ char cmd[2];
+
+ cmd[0] = RS_DATA;
+ cmd[1] = data;
+
+ //_i2c.write(I2CLCD_ADDR, cmd, 2);
+ _i2c.start();
+ wait_us(9);
+ _i2c.write(I2CLCD_ADDR);
+ wait_us(WAIT1);
+ _i2c.write(cmd[0]);
+ wait_us(WAIT1);
+ _i2c.write(cmd[1]);
+ wait_us(WAIT1);
+ _i2c.stop();
+
+}
+
+int I2cLCD::address(int column, int row) {
+
+ return 0x80 + (row * 0x40) + column;
+}
+
+int I2cLCD::columns() {
+ return 16;
+}
+
+int I2cLCD::rows() {
+ return 2;
+}
diff -r 000000000000 -r 9bf010140a3f I2cLCD16_ACM1601NI/I2cLCD.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/I2cLCD16_ACM1601NI/I2cLCD.h Sun Oct 20 03:44:57 2013 +0000
@@ -0,0 +1,40 @@
+//8x2 lcd
+#ifndef MBED_I2CLCD_H
+#define MBED_I2CLCD_H
+
+#include "mbed.h"
+
+class I2cLCD : public Stream {
+public:
+
+ I2cLCD(PinName sda, PinName scl);
+#if DOXYGEN_ONLY
+ int putc(int c);
+ int printf(const char* format, ...);
+#endif
+ void locate(int column, int row);
+ void cls();
+ int rows();
+ int columns();
+ void puticon(int flg);
+
+protected:
+ virtual int _putc(int value);
+ virtual int _getc();
+
+ int address(int column, int row);
+ void character(int column, int row, int c);
+ void writeCommand( int cmd );
+ void writeData( int data );
+
+ //DigitalOut _rs;
+ I2C _i2c;
+ int _column;
+ int _row;
+
+ char contrast;
+ int icon;
+
+};
+
+#endif
\ No newline at end of file
diff -r 000000000000 -r 9bf010140a3f main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Oct 20 03:44:57 2013 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+
+DigitalOut myled(LED1);
+#include "I2cLCD.h"
+I2cLCD lcd(p28, p27); // sda scl
+
+int main() {
+ lcd.locate(0,0);
+ lcd.printf("I2C_LCD");
+ lcd.locate(0,1);
+ lcd.printf("ABCdefghij");
+
+ while(1) {
+ myled = 1;
+ wait(0.2);
+ myled = 0;
+ wait(0.2);
+ }
+}
diff -r 000000000000 -r 9bf010140a3f mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sun Oct 20 03:44:57 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/a9913a65894f \ No newline at end of file