public static bool Write()
{
bool Ack;
byte CurrentDevAddr = DeviceAddr;
// convert Addr to string "ll hh"
byte AddrLow = (byte)Addr;
byte AddrHigh = (byte)(Addr >> 8);
string MemAddr = "";
if (TwoByteAddr == true)
{
MemAddr += Convert.ToString((AddrHigh & 0xf0) >> 4, 16);
MemAddr += Convert.ToString((AddrHigh & 0x0f), 16) + " ";
MemAddr += Convert.ToString((AddrLow & 0xf0) >> 4, 16);
MemAddr += Convert.ToString(AddrLow & 0x0f, 16);
}
else
{
MemAddr += Convert.ToString((AddrLow & 0xf0) >> 4, 16);
MemAddr += Convert.ToString(AddrLow & 0x0f, 16);
CurrentDevAddr |= (byte)(AddrHigh << 1);
}
// Set address
string TxBytes = MemAddr + " ";
// Convert FileBuffer to string
int i;
for (i = FileBufferIndex; i < FileBufferIndex + PageSize - 1; i++)
{
TxBytes += Convert.ToString((FileBuffer[i] & 0xf0) >> 4, 16);
TxBytes += Convert.ToString(FileBuffer[i] & 0x0f, 16) + " ";
}
TxBytes += Convert.ToString((FileBuffer[i] & 0xf0) >> 4, 16);
TxBytes += Convert.ToString(FileBuffer[i] & 0x0f, 16);
FileBufferIndex = i + 1;
Ack = I2c.WriteBytes(CurrentDevAddr, TxBytes);
I2c.StopCond();
if (Ack == false)
{
MemWrRunning = false;
return(false);
}
else
{
Addr += PageSize;
// check if finish
if (Addr > EndAddr)
{
MemWrRunning = false;
}
return(true);
}
}
private void btnI2cRx_Click(object sender, EventArgs e)
{
if ((tbxRxCount.Text != "") || (tbxRxCount.Text != "0"))
{ // something to read
ReadAndLog(Convert.ToByte(tbxRxCount.Text, 10));
I2c.StopCond();
}
TxRepeatCounter = 0;
tmPolling.Interval = Convert.ToUInt16(tbxRepeatDelay.Text);
tmPolling.Start();
}
private void btnI2cTx_Click(object sender, EventArgs e)
{
bool Ack;
Ack = I2c.WriteBytes(Convert.ToByte(tbxAddr.Text, 16),
tbxI2cTx.Text);
if (cbxRepeatedStart.Checked == false)
{
I2c.StopCond();
}
if (Ack == false)
{
uiNAKCnt = Convert.ToUInt16(tbxNAKCnt.Text);
uiNAKCnt++;
tbxNAKCnt.Text = Convert.ToString(uiNAKCnt);
}
TxRepeatCounter = 0;
tmPolling.Interval = Convert.ToUInt16(tbxRepeatDelay.Text);
tmPolling.Start();
}
private void tmPolling_Tick(object sender, EventArgs e)
{
if (InvokeRequired)
{
BeginInvoke(new tmPollingTickDelegate(tmPolling_Tick), new object[] { sender, e });
}
else
{
if (cbxRepeat.Checked == true) // Terminal Tx repeat
{
bool Ack = true;
if (tbxI2cTx.Text != "") // if "", then supress I2cWr
{
Ack = I2c.WriteBytes(Convert.ToByte(tbxAddr.Text, 16),
tbxI2cTx.Text);
if (cbxRepeatedStart.Checked == false)
{
I2c.StopCond();
}
}
if (Ack == false)
{
uiNAKCnt++;
tbxNAKCnt.Text = Convert.ToString(uiNAKCnt);
}
else
{
if ((tbxRxCount.Text != "") && (tbxRxCount.Text != "0"))
{ // something to read
ReadAndLog(Convert.ToByte(tbxRxCount.Text, 10));
I2c.StopCond();
} // end of something to read
}
TxRepeatCounter++;
tbxRepeatCounter.Text = Convert.ToString(TxRepeatCounter);
if ((StopOnError == true) &&
(Ack == false))
{
cbxRepeat.Checked = false;
}
}
else if (Eeprom.MemRdRunning == true)
{
if (Eeprom.Read() == false)
{
uiNAKCnt = Convert.ToUInt16(tbxNAKCnt.Text);
uiNAKCnt++;
tbxNAKCnt.Text = Convert.ToString(uiNAKCnt);
Eeprom.MemRdRunning = false;
tbxCurrentAddr.Text = "failed";
}
else
{
tbxCurrentAddr.Text = Convert.ToString(Eeprom.Addr);
}
}
else if (Eeprom.MemWrRunning == true)
{
if (Eeprom.Write() == false)
{
uiNAKCnt = Convert.ToUInt16(tbxNAKCnt.Text);
uiNAKCnt++;
tbxNAKCnt.Text = Convert.ToString(uiNAKCnt);
Eeprom.MemWrRunning = false;
tbxCurrentAddr.Text = "failed";
}
else
{
Thread.Sleep(10); // 10ms Eeprom Wr
tbxCurrentAddr.Text = Convert.ToString(Eeprom.Addr);
}
}
else if (I2c.LogOn == true)
{
tbxLogCounter.Text = Convert.ToString(I2c.LogCounter);
}
else if (CaptureRunning == true)
{
CaptureI2c();
}
else
{
tmPolling.Stop();
}
}
}
//--------------Eeprom Read ---------------------------------------------------
public static bool Read()
{
bool Ack;
byte CurrentDevAddr = DeviceAddr;
// convert Addr to string "ll hh"
byte AddrLow = (byte)Addr;
byte AddrHigh = (byte)(Addr >> 8);
string MemAddr = "";
string Log = "";
if (TwoByteAddr == true)
{
MemAddr += " " + Convert.ToString((AddrHigh & 0xf0) >> 4, 16);
MemAddr += Convert.ToString((AddrHigh & 0x0f), 16) + " ";
MemAddr += Convert.ToString((AddrLow & 0xf0) >> 4, 16);
MemAddr += Convert.ToString(AddrLow & 0x0f, 16);
}
else
{
MemAddr += Convert.ToString((AddrLow & 0xf0) >> 4, 16);
MemAddr += Convert.ToString(AddrLow & 0x0f, 16);
CurrentDevAddr |= (byte)(AddrHigh << 1);
}
// Set address
Ack = I2c.WriteBytes(CurrentDevAddr, MemAddr);
if (Ack == false)
{
MemRdRunning = false;
I2c.StopCond();
return(false);
}
else
{ // Read page, no I2c.StopCond() -> repeated Start
Ack = I2c.ReadBytes(CurrentDevAddr, PageSize);
if (Ack == false)
{
MemRdRunning = false;
}
else
{
if (I2c.LogOn == true)
{
I2c.fs = new FileStream("I2cDriver2.log", FileMode.Append);
I2c.sw = new StreamWriter(I2c.fs);
Log = "Rd: " + Convert.ToString(PageSize) + " bytes ";
if (Ack == true)
{
Log += "ACK";
}
else
{
Log += "NACK";
}
I2c.sw.WriteLine(Log);
I2c.LogCounter++;
I2c.sw.Close();
I2c.fs.Close();
}
}
I2c.StopCond();
}
Addr += PageSize;
// fill file buffer
int i;
for (i = 0; i < PageSize; i++)
{
FileBuffer[FileBufferIndex] = I2c.bRdBuffer[i];
FileBufferIndex++;
}
// check if finish
if (Addr > EndAddr)
{
MemRdRunning = false;
FileStream fs = new FileStream(FileName, FileMode.Create);
BinaryWriter bw = new BinaryWriter(fs);
for (i = 0; i < Length; i++)
{
bw.Write(FileBuffer[i]);
}
bw.Close();
fs.Close();
}
return(Ack);
}
