Takuo WATANABE / ACM1602NI

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

Dependents:   ACM1602NI_Demo ROBOT_v01 ROBOT_v02 Boku-Transmit ... more

ACM1602NI.cpp@0:aac87cbfc229, 2013-05-13 (annotated)

Committer:
takuo
Date:
Mon May 13 12:50:42 2013 +0000
Revision:
0:aac87cbfc229
Child:
1:84527dcd3fcc
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
takuo 0:aac87cbfc229 1 #include "mbed.h"
takuo 0:aac87cbfc229 2 #include "ACM1602NI.h"
takuo 0:aac87cbfc229 3
takuo 0:aac87cbfc229 4 #define _i2cSUCCESS 0
takuo 0:aac87cbfc229 5 #define _i2cFAILURE 1
takuo 0:aac87cbfc229 6
takuo 0:aac87cbfc229 7 ACM1602NI::ACM1602NI(I2C &i2c): _i2c(i2c) {
takuo 0:aac87cbfc229 8 init();
takuo 0:aac87cbfc229 9 }
takuo 0:aac87cbfc229 10
takuo 0:aac87cbfc229 11 void ACM1602NI::init() {
takuo 0:aac87cbfc229 12 writeCommand(0x01);
takuo 0:aac87cbfc229 13 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 14 writeCommand(0x38);
takuo 0:aac87cbfc229 15 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 16 writeCommand(0x0f);
takuo 0:aac87cbfc229 17 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 18 writeCommand(0x06);
takuo 0:aac87cbfc229 19 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 20 locate(0, 0);
takuo 0:aac87cbfc229 21 }
takuo 0:aac87cbfc229 22
takuo 0:aac87cbfc229 23 int ACM1602NI::writeBytes(const char *data, int length, bool repeated) {
takuo 0:aac87cbfc229 24 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 25 _i2c.start();
takuo 0:aac87cbfc229 26 for (int i = 0; i < length; i++) {
takuo 0:aac87cbfc229 27 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 28 if (_i2c.write(data[i]) != 1) {
takuo 0:aac87cbfc229 29 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 30 _i2c.stop();
takuo 0:aac87cbfc229 31 return _i2cFAILURE;
takuo 0:aac87cbfc229 32 }
takuo 0:aac87cbfc229 33 }
takuo 0:aac87cbfc229 34 if (!repeated) {
takuo 0:aac87cbfc229 35 wait_us(i2c_bit_wait_us);
takuo 0:aac87cbfc229 36 _i2c.stop();
takuo 0:aac87cbfc229 37 }
takuo 0:aac87cbfc229 38 return _i2cSUCCESS;
takuo 0:aac87cbfc229 39 }
takuo 0:aac87cbfc229 40
takuo 0:aac87cbfc229 41 void ACM1602NI::character(int column, int row, int c) {
takuo 0:aac87cbfc229 42 int a = address(column, row);
takuo 0:aac87cbfc229 43 writeCommand(a);
takuo 0:aac87cbfc229 44 writeData(c);
takuo 0:aac87cbfc229 45 }
takuo 0:aac87cbfc229 46
takuo 0:aac87cbfc229 47 void ACM1602NI::cls() {
takuo 0:aac87cbfc229 48 writeCommand(0x01);
takuo 0:aac87cbfc229 49 wait_ms(i2c_command_wait_ms);
takuo 0:aac87cbfc229 50 locate(0, 0);
takuo 0:aac87cbfc229 51 }
takuo 0:aac87cbfc229 52
takuo 0:aac87cbfc229 53 void ACM1602NI::locate(int column, int row) {
takuo 0:aac87cbfc229 54 _column = column;
takuo 0:aac87cbfc229 55 _row = row;
takuo 0:aac87cbfc229 56 }
takuo 0:aac87cbfc229 57
takuo 0:aac87cbfc229 58 int ACM1602NI::_putc(int value) {
takuo 0:aac87cbfc229 59 if (value == '\n') {
takuo 0:aac87cbfc229 60 _column = 0;
takuo 0:aac87cbfc229 61 _row = (_row + 1) % rows();
takuo 0:aac87cbfc229 62 }
takuo 0:aac87cbfc229 63 else {
takuo 0:aac87cbfc229 64 character(_column, _row, value);
takuo 0:aac87cbfc229 65 _column++;
takuo 0:aac87cbfc229 66 if (_column >= columns()) {
takuo 0:aac87cbfc229 67 _column = 0;
takuo 0:aac87cbfc229 68 _row = (_row + 1) % rows();
takuo 0:aac87cbfc229 69 }
takuo 0:aac87cbfc229 70 }
takuo 0:aac87cbfc229 71 return value;
takuo 0:aac87cbfc229 72 }
takuo 0:aac87cbfc229 73
takuo 0:aac87cbfc229 74 int ACM1602NI::_getc() {
takuo 0:aac87cbfc229 75 return -1;
takuo 0:aac87cbfc229 76 }
takuo 0:aac87cbfc229 77
takuo 0:aac87cbfc229 78 void ACM1602NI::writeCommand(int command) {
takuo 0:aac87cbfc229 79 char bs[3] = { i2c_addr, 0x00, command };
takuo 0:aac87cbfc229 80 writeBytes(bs, 3);
takuo 0:aac87cbfc229 81 }
takuo 0:aac87cbfc229 82
takuo 0:aac87cbfc229 83 void ACM1602NI::writeData(int data) {
takuo 0:aac87cbfc229 84 char bs[3] = { i2c_addr, 0x80, data };
takuo 0:aac87cbfc229 85 writeBytes(bs, 3);
takuo 0:aac87cbfc229 86 }
takuo 0:aac87cbfc229 87
takuo 0:aac87cbfc229 88 int ACM1602NI::address(int column, int row) {
takuo 0:aac87cbfc229 89 return 0x80 + row * 0x40 + column;
takuo 0:aac87cbfc229 90 }
takuo 0:aac87cbfc229 91
takuo 0:aac87cbfc229 92 int ACM1602NI::columns() {
takuo 0:aac87cbfc229 93 return display_columns;
takuo 0:aac87cbfc229 94 }
takuo 0:aac87cbfc229 95
takuo 0:aac87cbfc229 96 int ACM1602NI::rows() {
takuo 0:aac87cbfc229 97 return display_rows;
takuo 0:aac87cbfc229 98 }
takuo 0:aac87cbfc229 99