Library for Matrix Orbital VFD2041 display. Also useable for LCD2041 modules.
VFD.cpp
- Committer:
- wsalis01
- Date:
- 2012-04-08
- Revision:
- 4:f17ce5ab5d01
- Parent:
- 3:b96f8fff00e8
File content as of revision 4:f17ce5ab5d01:
#include "mbed.h" #include <string> #include "VFD.h" VFD::VFD() : _i2c(SDA, SCL) { _i2c.frequency(100000); } VFD::~VFD() { //Nothing to see here } void VFD::start() { _i2c.start(); } void VFD::stop() { _i2c.stop(); } int VFD::send_byte(int byte) { return _i2c.write(byte); } int VFD::read_byte(int ack) { return _i2c.read(ack); } int VFD::init() { const char cmd[] = {254,160,0}; int length = 3; return write(cmd, length); } int VFD::print(string msg) { return write(msg.data(), msg.size()); } int VFD::autoScrollOn() { const char cmd[] = {254, 81}; int length = 2; return write(cmd, length); } int VFD::autoScrollOff() { const char cmd[] = {254, 82}; int length = 2; return write(cmd, length); } int VFD::lineWrapOn() { const char cmd[] = {254, 67}; int length = 2; return write(cmd, length); } int VFD::lineWrapOff() { const char cmd[] = {254, 68}; int length = 2; return write(cmd, length); } int VFD::setCursor(const int col, const int row) { const char cmd[] = {254, 71, col, row}; int length = 4; return write(cmd, length); } int VFD::clearScreen() { const char cmd[] = {254, 88}; int length = 2; return write(cmd, length); } int VFD::goHome() { const char cmd[] = {254, 72}; int length = 2; return write(cmd, length); } int VFD::initLargeNumbers() { const char cmd[] = {254, 110}; int length = 2; return write(cmd, length); } int VFD::setBrightness(const int val) { if (val < 0 || val > 3) return -1; const char cmd[] = {254, 89, val}; int length = 3; return write(cmd, length); } int VFD::write(const char * data, int length) { int ret = _i2c.write(address, data, length); //Performs a complete write transaction wait_us(625); return ret; //Return I2C.write(...) return value } int VFD::read(char * data, int length) { int ret = _i2c.read(address, data, length); //Performs a complete write transaction wait_us(625); return ret; //Return I2C.write(...) return value }