An I2C text LCD library for Displaytronic ACM1602NI-FLW-FBW-M01 MOD by Zak
Fork of ACM1602NI by
ACM1602NI.cpp
- Committer:
- takuo
- Date:
- 2013-05-13
- Revision:
- 0:aac87cbfc229
- Child:
- 1:84527dcd3fcc
File content as of revision 0:aac87cbfc229:
#include "mbed.h" #include "ACM1602NI.h" #define _i2cSUCCESS 0 #define _i2cFAILURE 1 ACM1602NI::ACM1602NI(I2C &i2c): _i2c(i2c) { init(); } void ACM1602NI::init() { writeCommand(0x01); wait_ms(i2c_command_wait_ms); writeCommand(0x38); wait_ms(i2c_command_wait_ms); writeCommand(0x0f); wait_ms(i2c_command_wait_ms); writeCommand(0x06); wait_ms(i2c_command_wait_ms); locate(0, 0); } int ACM1602NI::writeBytes(const char *data, int length, bool repeated) { wait_us(i2c_bit_wait_us); _i2c.start(); for (int i = 0; i < length; i++) { wait_us(i2c_bit_wait_us); if (_i2c.write(data[i]) != 1) { wait_us(i2c_bit_wait_us); _i2c.stop(); return _i2cFAILURE; } } if (!repeated) { wait_us(i2c_bit_wait_us); _i2c.stop(); } return _i2cSUCCESS; } void ACM1602NI::character(int column, int row, int c) { int a = address(column, row); writeCommand(a); writeData(c); } void ACM1602NI::cls() { writeCommand(0x01); wait_ms(i2c_command_wait_ms); locate(0, 0); } void ACM1602NI::locate(int column, int row) { _column = column; _row = row; } int ACM1602NI::_putc(int value) { if (value == '\n') { _column = 0; _row = (_row + 1) % rows(); } else { character(_column, _row, value); _column++; if (_column >= columns()) { _column = 0; _row = (_row + 1) % rows(); } } return value; } int ACM1602NI::_getc() { return -1; } void ACM1602NI::writeCommand(int command) { char bs[3] = { i2c_addr, 0x00, command }; writeBytes(bs, 3); } void ACM1602NI::writeData(int data) { char bs[3] = { i2c_addr, 0x80, data }; writeBytes(bs, 3); } int ACM1602NI::address(int column, int row) { return 0x80 + row * 0x40 + column; } int ACM1602NI::columns() { return display_columns; } int ACM1602NI::rows() { return display_rows; }