/*
* Do the programming
*/
private void _btnProgram_Click(object sender, EventArgs e)
{
List <ImageFile> files;
long total;
ImageFile info;
SerialPort sp = null;
// protocol is 8 bits, 1 stop bit
try {
sp = new SerialPort(_serialPort.Text, int.Parse(_baudRate.Text), Parity.None, 8, StopBits.One);
sp.ReadTimeout = 10000;
sp.WriteTimeout = 10000;
sp.Open();
if (!sp.IsOpen)
{
throw new Exception(_serialPort.Text + " is not open");
}
sp.DataReceived += OnDataReady;
// gather the files
files = new List <ImageFile>();
total = 0;
foreach (ListViewItem lvi in _filesList.Items)
{
info = new ImageFile()
{
Address = int.Parse(lvi.SubItems[1].Text),
Info = new FileInfo(lvi.SubItems[0].Text)
};
total += info.Info.Length;
files.Add(info);
}
// set up the progress control
using (ProgressForm progress = new ProgressForm()) {
progress.Total = (int)total;
// program it
total = 0;
progress.Show();
foreach (ImageFile i in files)
{
progress.Prompt = i.Info.Name;
ProgramFile(sp, i, progress, ref total);
}
}
} catch (Exception ex) {
MessageBox.Show(ex.Message, "Program Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
} finally {
if (sp != null)
{
sp.DataReceived -= OnDataReady;
sp.Close();
}
}
}
/*
* Read the response
*/
private void ReadResponse(SerialPort sp,ProgressForm progress)
{
byte[] response;
int i;
// wait for 30 seconds max
for(i=0;i<60;i++) {
if(_dataReadyEvent.WaitOne(TimeSpan.FromMilliseconds(500)))
break;
Application.DoEvents();
if(progress.Cancelled)
throw new Exception("User cancelled");
}
if(i==60)
throw new Exception("No response received from the Arduino after 30 seconds");
response=new byte[1];
sp.Read(response,0,1);
if(response[0]!=1)
throw new Exception("Serial transfer error: the Arduino NACK'd the data");
}
/*
* Do the programming
*/
private void _btnProgram_Click(object sender,EventArgs e)
{
List<ImageFile> files;
long total;
ImageFile info;
SerialPort sp=null;
// protocol is 8 bits, 1 stop bit
try {
sp=new SerialPort(_serialPort.Text,int.Parse(_baudRate.Text),Parity.None,8,StopBits.One);
sp.ReadTimeout=10000;
sp.WriteTimeout=10000;
sp.Open();
if(!sp.IsOpen)
throw new Exception(_serialPort.Text+" is not open");
sp.DataReceived+=OnDataReady;
// gather the files
files=new List<ImageFile>();
total=0;
foreach(ListViewItem lvi in _filesList.Items) {
info=new ImageFile() {
Address=int.Parse(lvi.SubItems[1].Text),
Info=new FileInfo(lvi.SubItems[0].Text)
};
total+=info.Info.Length;
files.Add(info);
}
// set up the progress control
using(ProgressForm progress=new ProgressForm()) {
progress.Total=(int)total;
// program it
total=0;
progress.Show();
foreach(ImageFile i in files) {
progress.Prompt=i.Info.Name;
ProgramFile(sp,i,progress,ref total);
}
}
} catch(Exception ex) {
MessageBox.Show(ex.Message,"Program Error",MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
} finally {
if(sp != null) {
sp.DataReceived-=OnDataReady;
sp.Close();
}
}
}
/*
* Do the actual programming
*/
private void ProgramFile(SerialPort sp,ImageFile info,ProgressForm progress,ref long total)
{
int address,pages,i,fileBytesRead,length;
byte[] page;
// set up for the programming loop
address=info.Address;
length=(int)info.Info.Length;
page=new byte[256];
if((length % 256)==0)
pages=length/256;
else
pages=(length/256)+1;
// program each page
using(FileStream fs=info.Info.OpenRead()) {
for(i=0;i<pages;i++) {
// read the next page - the last one may be a short read if
// last page and length is not a page size multiple
Array.Clear(page,0,page.Length);
fileBytesRead=fs.Read(page,0,page.Length);
SendPreamble(sp);
SendAddress(sp,address);
SendPage(sp,page);
ReadResponse(sp,progress);
// update address for next write
address+=256;
// update progress
if(progress.Cancelled)
throw new Exception("User cancelled");
progress.Progress=(int)total;
total+=fileBytesRead;
}
}
}