Kazutaka "Zak" Sawa / ACM1602NI

An I2C text LCD library for Displaytronic ACM1602NI-FLW-FBW-M01 MOD by Zak

Dependents:   mbed_XBus_Test

Fork of ACM1602NI by Takuo WATANABE

ACM1602NI.cpp@9:1f671c868ce0, 2014-11-05 (annotated)

Committer:
sawa
Date:
Wed Nov 05 06:33:04 2014 +0000
Revision:
9:1f671c868ce0
Parent:
8:661827681a12 
Add one line to show cursor when called locate function.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
takuo 3:bac80efb323e 1 /* An I2C text LCD library for Displaytronic ACM1602NI-FLW-FBW-M01
takuo 7:728c03b52b79 2 * Copyright 2013, 2014, Takuo WATANABE (wtakuo)
takuo 1:84527dcd3fcc 3 *
takuo 1:84527dcd3fcc 4 * Licensed under the Apache License, Version 2.0 (the "License");
takuo 1:84527dcd3fcc 5 * you may not use this file except in compliance with the License.
takuo 1:84527dcd3fcc 6 * You may obtain a copy of the License at
takuo 1:84527dcd3fcc 7 *
takuo 1:84527dcd3fcc 8 * http://www.apache.org/licenses/LICENSE-2.0
takuo 1:84527dcd3fcc 9 *
takuo 1:84527dcd3fcc 10 * Unless required by applicable law or agreed to in writing, software
takuo 1:84527dcd3fcc 11 * distributed under the License is distributed on an "AS IS" BASIS,
takuo 1:84527dcd3fcc 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
takuo 1:84527dcd3fcc 13 * See the License for the specific language governing permissions and
takuo 1:84527dcd3fcc 14 * limitations under the License.
takuo 1:84527dcd3fcc 15 */
takuo 1:84527dcd3fcc 16
takuo 0:aac87cbfc229 17 #include "mbed.h"
takuo 0:aac87cbfc229 18 #include "ACM1602NI.h"
takuo 0:aac87cbfc229 19
takuo 4:33a8ca14e0e0 20 #define I2C_SUCCESS 0
takuo 4:33a8ca14e0e0 21 #define I2C_FAILURE 1
takuo 0:aac87cbfc229 22
takuo 8:661827681a12 23 ACM1602NI::ACM1602NI(PinName sda, PinName scl) : _i2c(sda, scl) {
takuo 5:c1dbbc2af9dd 24 init();
takuo 5:c1dbbc2af9dd 25 }
takuo 5:c1dbbc2af9dd 26
takuo 8:661827681a12 27 ACM1602NI::ACM1602NI(I2C &i2c) : _i2c(i2c) {
takuo 0:aac87cbfc229 28 init();
takuo 0:aac87cbfc229 29 }
takuo 0:aac87cbfc229 30
takuo 8:661827681a12 31 void ACM1602NI::init() {
takuo 0:aac87cbfc229 32 writeCommand(0x01);
takuo 0:aac87cbfc229 33 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 34 writeCommand(0x38);
takuo 0:aac87cbfc229 35 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 36 writeCommand(0x0f);
takuo 0:aac87cbfc229 37 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 38 writeCommand(0x06);
takuo 0:aac87cbfc229 39 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 40 locate(0, 0);
takuo 0:aac87cbfc229 41 }
takuo 0:aac87cbfc229 42
takuo 8:661827681a12 43 int ACM1602NI::writeBytes(const char *data, int length, bool repeated) {
takuo 0:aac87cbfc229 44 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 45 _i2c.start();
takuo 0:aac87cbfc229 46 for (int i = 0; i < length; i++) {
takuo 0:aac87cbfc229 47 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 48 if (_i2c.write(data[i]) != 1) {
takuo 0:aac87cbfc229 49 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 50 _i2c.stop();
takuo 4:33a8ca14e0e0 51 return I2C_FAILURE;
takuo 0:aac87cbfc229 52 }
takuo 0:aac87cbfc229 53 }
takuo 0:aac87cbfc229 54 if (!repeated) {
takuo 0:aac87cbfc229 55 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 56 _i2c.stop();
takuo 0:aac87cbfc229 57 }
takuo 4:33a8ca14e0e0 58 return I2C_SUCCESS;
takuo 0:aac87cbfc229 59 }
takuo 0:aac87cbfc229 60
takuo 8:661827681a12 61 void ACM1602NI::character(int column, int row, int c) {
takuo 4:33a8ca14e0e0 62 writeCommand(address(column, row));
takuo 0:aac87cbfc229 63 writeData(c);
takuo 0:aac87cbfc229 64 }
takuo 0:aac87cbfc229 65
takuo 8:661827681a12 66 void ACM1602NI::cls() {
takuo 0:aac87cbfc229 67 writeCommand(0x01);
takuo 0:aac87cbfc229 68 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 69 locate(0, 0);
takuo 0:aac87cbfc229 70 }
takuo 0:aac87cbfc229 71
takuo 8:661827681a12 72 void ACM1602NI::locate(int column, int row) {
takuo 0:aac87cbfc229 73 _column = column;
takuo 0:aac87cbfc229 74 _row = row;
sawa 9:1f671c868ce0 75 writeCommand(address(column, row));
takuo 0:aac87cbfc229 76 }
takuo 0:aac87cbfc229 77
takuo 8:661827681a12 78 int ACM1602NI::_putc(int value) {
takuo 0:aac87cbfc229 79 if (value == '\n') {
takuo 0:aac87cbfc229 80 _column = 0;
takuo 0:aac87cbfc229 81 _row = (_row + 1) % rows();
takuo 8:661827681a12 82 }
takuo 8:661827681a12 83 else {
takuo 0:aac87cbfc229 84 character(_column, _row, value);
takuo 0:aac87cbfc229 85 _column++;
takuo 0:aac87cbfc229 86 if (_column >= columns()) {
takuo 0:aac87cbfc229 87 _column = 0;
takuo 0:aac87cbfc229 88 _row = (_row + 1) % rows();
takuo 0:aac87cbfc229 89 }
takuo 0:aac87cbfc229 90 }
takuo 0:aac87cbfc229 91 return value;
takuo 0:aac87cbfc229 92 }
takuo 0:aac87cbfc229 93
takuo 8:661827681a12 94 int ACM1602NI::_getc() {
takuo 0:aac87cbfc229 95 return -1;
takuo 0:aac87cbfc229 96 }
takuo 0:aac87cbfc229 97
takuo 8:661827681a12 98 void ACM1602NI::writeCommand(char command) {
takuo 0:aac87cbfc229 99 char bs[3] = { i2c_addr, 0x00, command };
takuo 0:aac87cbfc229 100 writeBytes(bs, 3);
takuo 0:aac87cbfc229 101 }
takuo 0:aac87cbfc229 102
takuo 8:661827681a12 103 void ACM1602NI::writeData(char data) {
takuo 0:aac87cbfc229 104 char bs[3] = { i2c_addr, 0x80, data };
takuo 0:aac87cbfc229 105 writeBytes(bs, 3);
takuo 0:aac87cbfc229 106 }
takuo 0:aac87cbfc229 107
takuo 8:661827681a12 108 int ACM1602NI::address(int column, int row) {
takuo 0:aac87cbfc229 109 return 0x80 + row * 0x40 + column;
takuo 0:aac87cbfc229 110 }
takuo 0:aac87cbfc229 111
takuo 8:661827681a12 112 int ACM1602NI::columns() {
takuo 0:aac87cbfc229 113 return display_columns;
takuo 0:aac87cbfc229 114 }
takuo 0:aac87cbfc229 115
takuo 8:661827681a12 116 int ACM1602NI::rows() {
takuo 0:aac87cbfc229 117 return display_rows;
takuo 0:aac87cbfc229 118 }