ER400TRS_Temperature_Transmitter - Wireless temperature transmitter with ER400TRS tr…

Users » lnadal » Code » ER400TRS_Temperature_Transmitter

Lluis Nadal / Mbed 2 deprecated ER400TRS_Temperature_Transmitter

Wireless temperature transmitter with ER400TRS transceiver and MCP9700 temperature sensor.

TextLCD/TextLCD.cpp@0:407b38152be7, 2011-08-31 (annotated)

Committer:: lnadal
Date:: Wed Aug 31 04:08:11 2011 +0000
Revision:: 0:407b38152be7

Who changed what in which revision?

User	Revision	Line number	New contents of line
lnadal	0:407b38152be7	1	/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
lnadal	0:407b38152be7	2	* Copyright (c) 2007-2010, sford
lnadal	0:407b38152be7	3	*
lnadal	0:407b38152be7	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
lnadal	0:407b38152be7	5	* of this software and associated documentation files (the "Software"), to deal
lnadal	0:407b38152be7	6	* in the Software without restriction, including without limitation the rights
lnadal	0:407b38152be7	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
lnadal	0:407b38152be7	8	* copies of the Software, and to permit persons to whom the Software is
lnadal	0:407b38152be7	9	* furnished to do so, subject to the following conditions:
lnadal	0:407b38152be7	10	*
lnadal	0:407b38152be7	11	* The above copyright notice and this permission notice shall be included in
lnadal	0:407b38152be7	12	* all copies or substantial portions of the Software.
lnadal	0:407b38152be7	13	*
lnadal	0:407b38152be7	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
lnadal	0:407b38152be7	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
lnadal	0:407b38152be7	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
lnadal	0:407b38152be7	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
lnadal	0:407b38152be7	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
lnadal	0:407b38152be7	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
lnadal	0:407b38152be7	20	* THE SOFTWARE.
lnadal	0:407b38152be7	21	*/
lnadal	0:407b38152be7	22
lnadal	0:407b38152be7	23	#include "TextLCD.h"
lnadal	0:407b38152be7	24	#include "mbed.h"
lnadal	0:407b38152be7	25
lnadal	0:407b38152be7	26	TextLCD::TextLCD(PinName rs, PinName e, PinName d0, PinName d1,
lnadal	0:407b38152be7	27	PinName d2, PinName d3, LCDType type) : _rs(rs),
lnadal	0:407b38152be7	28	_e(e), _d(d0, d1, d2, d3),
lnadal	0:407b38152be7	29	_type(type) {
lnadal	0:407b38152be7	30
lnadal	0:407b38152be7	31	_e = 1;
lnadal	0:407b38152be7	32	_rs = 0; // command mode
lnadal	0:407b38152be7	33
lnadal	0:407b38152be7	34	wait(0.015); // Wait 15ms to ensure powered up
lnadal	0:407b38152be7	35
lnadal	0:407b38152be7	36	// send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
lnadal	0:407b38152be7	37	for (int i=0; i<3; i++) {
lnadal	0:407b38152be7	38	writeByte(0x3);
lnadal	0:407b38152be7	39	wait(0.00164); // this command takes 1.64ms, so wait for it
lnadal	0:407b38152be7	40	}
lnadal	0:407b38152be7	41	writeByte(0x2); // 4-bit mode
lnadal	0:407b38152be7	42	wait(0.000040f); // most instructions take 40us
lnadal	0:407b38152be7	43
lnadal	0:407b38152be7	44	writeCommand(0x28); // Function set 001 BW N F - -
lnadal	0:407b38152be7	45	writeCommand(0x0C);
lnadal	0:407b38152be7	46	writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
lnadal	0:407b38152be7	47	cls();
lnadal	0:407b38152be7	48	}
lnadal	0:407b38152be7	49
lnadal	0:407b38152be7	50	void TextLCD::character(int column, int row, int c) {
lnadal	0:407b38152be7	51	int a = address(column, row);
lnadal	0:407b38152be7	52	writeCommand(a);
lnadal	0:407b38152be7	53	writeData(c);
lnadal	0:407b38152be7	54	}
lnadal	0:407b38152be7	55
lnadal	0:407b38152be7	56	void TextLCD::cls() {
lnadal	0:407b38152be7	57	writeCommand(0x01); // cls, and set cursor to 0
lnadal	0:407b38152be7	58	wait(0.00164f); // This command takes 1.64 ms
lnadal	0:407b38152be7	59	locate(0, 0);
lnadal	0:407b38152be7	60	}
lnadal	0:407b38152be7	61
lnadal	0:407b38152be7	62	void TextLCD::locate(int column, int row) {
lnadal	0:407b38152be7	63	_column = column;
lnadal	0:407b38152be7	64	_row = row;
lnadal	0:407b38152be7	65	}
lnadal	0:407b38152be7	66
lnadal	0:407b38152be7	67	int TextLCD::_putc(int value) {
lnadal	0:407b38152be7	68	if (value == '\n') {
lnadal	0:407b38152be7	69	_column = 0;
lnadal	0:407b38152be7	70	_row++;
lnadal	0:407b38152be7	71	if (_row >= rows()) {
lnadal	0:407b38152be7	72	_row = 0;
lnadal	0:407b38152be7	73	}
lnadal	0:407b38152be7	74	} else {
lnadal	0:407b38152be7	75	character(_column, _row, value);
lnadal	0:407b38152be7	76	_column++;
lnadal	0:407b38152be7	77	if (_column >= columns()) {
lnadal	0:407b38152be7	78	_column = 0;
lnadal	0:407b38152be7	79	_row++;
lnadal	0:407b38152be7	80	if (_row >= rows()) {
lnadal	0:407b38152be7	81	_row = 0;
lnadal	0:407b38152be7	82	}
lnadal	0:407b38152be7	83	}
lnadal	0:407b38152be7	84	}
lnadal	0:407b38152be7	85	return value;
lnadal	0:407b38152be7	86	}
lnadal	0:407b38152be7	87
lnadal	0:407b38152be7	88	int TextLCD::_getc() {
lnadal	0:407b38152be7	89	return -1;
lnadal	0:407b38152be7	90	}
lnadal	0:407b38152be7	91
lnadal	0:407b38152be7	92	void TextLCD::writeByte(int value) {
lnadal	0:407b38152be7	93	_d = value >> 4;
lnadal	0:407b38152be7	94	wait(0.000040f); // most instructions take 40us
lnadal	0:407b38152be7	95	_e = 0;
lnadal	0:407b38152be7	96	wait(0.000040f);
lnadal	0:407b38152be7	97	_e = 1;
lnadal	0:407b38152be7	98	_d = value >> 0;
lnadal	0:407b38152be7	99	wait(0.000040f);
lnadal	0:407b38152be7	100	_e = 0;
lnadal	0:407b38152be7	101	wait(0.000040f); // most instructions take 40us
lnadal	0:407b38152be7	102	_e = 1;
lnadal	0:407b38152be7	103	}
lnadal	0:407b38152be7	104
lnadal	0:407b38152be7	105	void TextLCD::writeCommand(int command) {
lnadal	0:407b38152be7	106	_rs = 0;
lnadal	0:407b38152be7	107	writeByte(command);
lnadal	0:407b38152be7	108	}
lnadal	0:407b38152be7	109
lnadal	0:407b38152be7	110	void TextLCD::writeData(int data) {
lnadal	0:407b38152be7	111	_rs = 1;
lnadal	0:407b38152be7	112	writeByte(data);
lnadal	0:407b38152be7	113	}
lnadal	0:407b38152be7	114
lnadal	0:407b38152be7	115	int TextLCD::address(int column, int row) {
lnadal	0:407b38152be7	116	switch (_type) {
lnadal	0:407b38152be7	117	case LCD20x4:
lnadal	0:407b38152be7	118	switch (row) {
lnadal	0:407b38152be7	119	case 0:
lnadal	0:407b38152be7	120	return 0x80 + column;
lnadal	0:407b38152be7	121	case 1:
lnadal	0:407b38152be7	122	return 0xc0 + column;
lnadal	0:407b38152be7	123	case 2:
lnadal	0:407b38152be7	124	return 0x94 + column;
lnadal	0:407b38152be7	125	case 3:
lnadal	0:407b38152be7	126	return 0xd4 + column;
lnadal	0:407b38152be7	127	}
lnadal	0:407b38152be7	128	case LCD16x2B:
lnadal	0:407b38152be7	129	return 0x80 + (row * 40) + column;
lnadal	0:407b38152be7	130	case LCD16x2:
lnadal	0:407b38152be7	131	case LCD20x2:
lnadal	0:407b38152be7	132	default:
lnadal	0:407b38152be7	133	return 0x80 + (row * 0x40) + column;
lnadal	0:407b38152be7	134	}
lnadal	0:407b38152be7	135	}
lnadal	0:407b38152be7	136
lnadal	0:407b38152be7	137	int TextLCD::columns() {
lnadal	0:407b38152be7	138	switch (_type) {
lnadal	0:407b38152be7	139	case LCD20x4:
lnadal	0:407b38152be7	140	case LCD20x2:
lnadal	0:407b38152be7	141	return 20;
lnadal	0:407b38152be7	142	case LCD16x2:
lnadal	0:407b38152be7	143	case LCD16x2B:
lnadal	0:407b38152be7	144	default:
lnadal	0:407b38152be7	145	return 16;
lnadal	0:407b38152be7	146	}
lnadal	0:407b38152be7	147	}
lnadal	0:407b38152be7	148
lnadal	0:407b38152be7	149	int TextLCD::rows() {
lnadal	0:407b38152be7	150	switch (_type) {
lnadal	0:407b38152be7	151	case LCD20x4:
lnadal	0:407b38152be7	152	return 4;
lnadal	0:407b38152be7	153	case LCD16x2:
lnadal	0:407b38152be7	154	case LCD16x2B:
lnadal	0:407b38152be7	155	case LCD20x2:
lnadal	0:407b38152be7	156	default:
lnadal	0:407b38152be7	157	return 2;
lnadal	0:407b38152be7	158	}
lnadal	0:407b38152be7	159	}

Repository toolbox

Export to desktop IDE

Build repository

Repository details

Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	31 Aug 2011
Imports:	9
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	1

TextLCD/TextLCD.cpp@0:407b38152be7, 2011-08-31 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning