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Dependencies:   SDFileSystem mbed

Fork of SDFileSystem_HelloWorld by mbed official

ACM1602NI.cpp@1:a41c274f95e2, 2016-10-17 (annotated)

Committer:
tamaki
Date:
Mon Oct 17 00:20:38 2016 +0000
Revision:
1:a41c274f95e2
mbed board check program for SD card(read, write)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
tamaki 1:a41c274f95e2 1 /* An I2C text LCD library for Displaytronic ACM1602NI-FLW-FBW-M01
tamaki 1:a41c274f95e2 2 * Copyright 2013, Takuo WATANABE (wtakuo)
tamaki 1:a41c274f95e2 3 *
tamaki 1:a41c274f95e2 4 * Licensed under the Apache License, Version 2.0 (the "License");
tamaki 1:a41c274f95e2 5 * you may not use this file except in compliance with the License.
tamaki 1:a41c274f95e2 6 * You may obtain a copy of the License at
tamaki 1:a41c274f95e2 7 *
tamaki 1:a41c274f95e2 8 * http://www.apache.org/licenses/LICENSE-2.0
tamaki 1:a41c274f95e2 9 *
tamaki 1:a41c274f95e2 10 * Unless required by applicable law or agreed to in writing, software
tamaki 1:a41c274f95e2 11 * distributed under the License is distributed on an "AS IS" BASIS,
tamaki 1:a41c274f95e2 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
tamaki 1:a41c274f95e2 13 * See the License for the specific language governing permissions and
tamaki 1:a41c274f95e2 14 * limitations under the License.
tamaki 1:a41c274f95e2 15 */
tamaki 1:a41c274f95e2 16
tamaki 1:a41c274f95e2 17 #include "mbed.h"
tamaki 1:a41c274f95e2 18 #include "ACM1602NI.h"
tamaki 1:a41c274f95e2 19
tamaki 1:a41c274f95e2 20 #define I2C_SUCCESS 0
tamaki 1:a41c274f95e2 21 #define I2C_FAILURE 1
tamaki 1:a41c274f95e2 22
tamaki 1:a41c274f95e2 23 ACM1602NI::ACM1602NI(PinName sda, PinName scl) : _i2c(sda, scl)
tamaki 1:a41c274f95e2 24 {
tamaki 1:a41c274f95e2 25 init();
tamaki 1:a41c274f95e2 26 }
tamaki 1:a41c274f95e2 27
tamaki 1:a41c274f95e2 28 ACM1602NI::ACM1602NI(I2C &i2c) : _i2c(i2c)
tamaki 1:a41c274f95e2 29 {
tamaki 1:a41c274f95e2 30 init();
tamaki 1:a41c274f95e2 31 }
tamaki 1:a41c274f95e2 32
tamaki 1:a41c274f95e2 33 void ACM1602NI::init()
tamaki 1:a41c274f95e2 34 {
tamaki 1:a41c274f95e2 35 writeCommand(0x01);
tamaki 1:a41c274f95e2 36 wait_ms(i2c_command_wait_ms);
tamaki 1:a41c274f95e2 37 writeCommand(0x38);
tamaki 1:a41c274f95e2 38 wait_ms(i2c_command_wait_ms);
tamaki 1:a41c274f95e2 39 writeCommand(0x0f);
tamaki 1:a41c274f95e2 40 wait_ms(i2c_command_wait_ms);
tamaki 1:a41c274f95e2 41 writeCommand(0x06);
tamaki 1:a41c274f95e2 42 wait_ms(i2c_command_wait_ms);
tamaki 1:a41c274f95e2 43 locate(0, 0);
tamaki 1:a41c274f95e2 44 }
tamaki 1:a41c274f95e2 45
tamaki 1:a41c274f95e2 46 int ACM1602NI::writeBytes(const char *data, int length, bool repeated)
tamaki 1:a41c274f95e2 47 {
tamaki 1:a41c274f95e2 48 wait_us(i2c_bit_wait_us);
tamaki 1:a41c274f95e2 49 _i2c.start();
tamaki 1:a41c274f95e2 50 for (int i = 0; i < length; i++) {
tamaki 1:a41c274f95e2 51 wait_us(i2c_bit_wait_us);
tamaki 1:a41c274f95e2 52 if (_i2c.write(data[i]) != 1) {
tamaki 1:a41c274f95e2 53 wait_us(i2c_bit_wait_us);
tamaki 1:a41c274f95e2 54 _i2c.stop();
tamaki 1:a41c274f95e2 55 return I2C_FAILURE;
tamaki 1:a41c274f95e2 56 }
tamaki 1:a41c274f95e2 57 }
tamaki 1:a41c274f95e2 58 if (!repeated) {
tamaki 1:a41c274f95e2 59 wait_us(i2c_bit_wait_us);
tamaki 1:a41c274f95e2 60 _i2c.stop();
tamaki 1:a41c274f95e2 61 }
tamaki 1:a41c274f95e2 62 return I2C_SUCCESS;
tamaki 1:a41c274f95e2 63 }
tamaki 1:a41c274f95e2 64
tamaki 1:a41c274f95e2 65 void ACM1602NI::character(int column, int row, int c)
tamaki 1:a41c274f95e2 66 {
tamaki 1:a41c274f95e2 67 writeCommand(address(column, row));
tamaki 1:a41c274f95e2 68 writeData(c);
tamaki 1:a41c274f95e2 69 }
tamaki 1:a41c274f95e2 70
tamaki 1:a41c274f95e2 71 void ACM1602NI::cls()
tamaki 1:a41c274f95e2 72 {
tamaki 1:a41c274f95e2 73 writeCommand(0x01);
tamaki 1:a41c274f95e2 74 wait_ms(i2c_command_wait_ms);
tamaki 1:a41c274f95e2 75 locate(0, 0);
tamaki 1:a41c274f95e2 76 }
tamaki 1:a41c274f95e2 77
tamaki 1:a41c274f95e2 78 void ACM1602NI::locate(int column, int row)
tamaki 1:a41c274f95e2 79 {
tamaki 1:a41c274f95e2 80 _column = column;
tamaki 1:a41c274f95e2 81 _row = row;
tamaki 1:a41c274f95e2 82 }
tamaki 1:a41c274f95e2 83
tamaki 1:a41c274f95e2 84 int ACM1602NI::_putc(int value)
tamaki 1:a41c274f95e2 85 {
tamaki 1:a41c274f95e2 86 if (value == '\n') {
tamaki 1:a41c274f95e2 87 _column = 0;
tamaki 1:a41c274f95e2 88 _row = (_row + 1) % rows();
tamaki 1:a41c274f95e2 89 } else {
tamaki 1:a41c274f95e2 90 character(_column, _row, value);
tamaki 1:a41c274f95e2 91 _column++;
tamaki 1:a41c274f95e2 92 if (_column >= columns()) {
tamaki 1:a41c274f95e2 93 _column = 0;
tamaki 1:a41c274f95e2 94 _row = (_row + 1) % rows();
tamaki 1:a41c274f95e2 95 }
tamaki 1:a41c274f95e2 96 }
tamaki 1:a41c274f95e2 97 return value;
tamaki 1:a41c274f95e2 98 }
tamaki 1:a41c274f95e2 99
tamaki 1:a41c274f95e2 100 int ACM1602NI::_getc()
tamaki 1:a41c274f95e2 101 {
tamaki 1:a41c274f95e2 102 return -1;
tamaki 1:a41c274f95e2 103 }
tamaki 1:a41c274f95e2 104
tamaki 1:a41c274f95e2 105 void ACM1602NI::writeCommand(int command)
tamaki 1:a41c274f95e2 106 {
tamaki 1:a41c274f95e2 107 char bs[3] = { i2c_addr, 0x00, command };
tamaki 1:a41c274f95e2 108 writeBytes(bs, 3);
tamaki 1:a41c274f95e2 109 }
tamaki 1:a41c274f95e2 110
tamaki 1:a41c274f95e2 111 void ACM1602NI::writeData(int data)
tamaki 1:a41c274f95e2 112 {
tamaki 1:a41c274f95e2 113 char bs[3] = { i2c_addr, 0x80, data };
tamaki 1:a41c274f95e2 114 writeBytes(bs, 3);
tamaki 1:a41c274f95e2 115 }
tamaki 1:a41c274f95e2 116
tamaki 1:a41c274f95e2 117 int ACM1602NI::address(int column, int row)
tamaki 1:a41c274f95e2 118 {
tamaki 1:a41c274f95e2 119 return 0x80 + row * 0x40 + column;
tamaki 1:a41c274f95e2 120 }
tamaki 1:a41c274f95e2 121
tamaki 1:a41c274f95e2 122 int ACM1602NI::columns()
tamaki 1:a41c274f95e2 123 {
tamaki 1:a41c274f95e2 124 return display_columns;
tamaki 1:a41c274f95e2 125 }
tamaki 1:a41c274f95e2 126
tamaki 1:a41c274f95e2 127 int ACM1602NI::rows()
tamaki 1:a41c274f95e2 128 {
tamaki 1:a41c274f95e2 129 return display_rows;
tamaki 1:a41c274f95e2 130 }