public static void ReadI2CWorker(object data)
{
WiiReaderV1 reader = ((WiiReaderV1)data);
while (!reader.inShutdown)
{
I2CPacket packet = reader.packetPool[reader.currentPacketInPool];
reader.currentPacketInPool += 1;
reader.currentPacketInPool %= 100;
uint status = 0;
ulong timeSop = 0;
ulong timeDuration = 0;
uint timeDataOffset = 0;
packet.Length = BeagleApi.bg_i2c_read(
((WiiReaderV1)data).hBeagle, ref status, ref timeSop,
ref timeDuration, ref timeDataOffset, 1024, packet.Data);
if (packet.Length >= 1)
{
reader.packetsToBeProcessed.Enqueue(packet);
}
}
}
public List <string> snoop_i2c(int num_packets)
{
// Capture and print each transaction
List <ushort> full_data = new List <ushort>(); //keep adding bytes to this as it goes
List <string> lines = new List <string>();
for (int i = 0; i < num_packets || num_packets == 0; ++i)
{
uint status = 0;
ulong time_sop = 0, time_sop_ns = 0;
ulong time_duration = 0;
uint time_dataoffset = 0;
int count = 0;
// Read transaction with bit timing data
try
{
count = BeagleApi.bg_i2c_read(handle, ref status, ref time_sop, ref time_duration, ref time_dataoffset, max_bytes, data_in);
//count = BeagleApi.bg_i2c_read_bit_timing(handle, ref status, ref time_sop, ref time_duration, ref time_dataoffset, max_bytes, data_in, timing_size, timing);
}
catch
{
Console.WriteLine("Error in I2C bit read, skipping");
continue;
}
string output = "";// output_parse(data_in); //for building console output
string status_string = print_general_status(status);
try
{
buffer.AddRange(data_in); //add to my own buffer
}
catch (System.ArgumentOutOfRangeException)
{
Console.WriteLine("Skipping measurement..");
}
///lines.Add(status_string + " - " + output + " - " + "Iteration: " + i); //added this so see in gui
if (status_string.Contains("TIMEOUT"))
{
continue; //skip if no activity on bus
}
// Translate timestamp to ns
time_sop_ns = TIMESTAMP_TO_NS(time_sop, sample_rate);
///Console.Write("{0:d},{1:d}", i, time_sop_ns);
///Console.Write(",I2C,(");
if (count < 0) //error condition
{
Console.Write("error={0:d},", count);
}
///else
/// Console.Write("Read " + count + " bits. ");
//print_general_status(status); //below reference funct -> moved up
///Console.Write(status_string);
///print_i2c_status(status); //below reference funct
///Console.Write(")");
// Check for errors
if (count <= 0)
{
Console.Write("\n");
Console.Out.Flush(); //what does this do?
if (count < 0)
{
break;
}
// If zero data captured, continue
continue;
}
// Print the address and read/write
///Console.Write(",");
int offset = 0;
/*
* if ((status & BeagleApi.BG_READ_ERR_MIDDLE_OF_PACKET) == 0)
* {
* // Display the start condition
* Console.Write("[S] ");
*
* if (count >= 1)
* {
* // Determine if byte was NACKed
* int nack = (data_in[0] & BeagleApi.BG_I2C_MONITOR_NACK);
*
* // Determine if this is a 10-bit address
* if (count == 1 || (data_in[0] & 0xf9) != 0xf0 ||
* (nack != 0))
* {
* // Display 7-bit address
* Console.Write("<{0:x2}:{1:s}>{2:s} ",
* (data_in[0] & 0xff) >> 1,
* ((data_in[0] & 0x01) != 0) ? 'r' : 'w',
* (nack != 0) ? "*" : "");
* offset = 1;
* }
* else
* {
* // Display 10-bit address
* Console.Write("<{0:x3}:{1:s}>{2:s} ", ((data_in[0] << 7) & 0x300) | (data_in[1] & 0xff), ((data_in[0] & 0x01) != 0) ? 'r' : 'w',
* (nack != 0) ? "*" : "");
* offset = 2;
* }
* }
* }
*///take out prints
// Display rest of transaction - data
count = count - offset;
/*
* for (int n = 0; n < count; ++n)
* {
* // Determine if byte was NACKed
* int nack = (data_in[offset] & BeagleApi.BG_I2C_MONITOR_NACK);
*
* Console.Write("{0:x2}{1:s} ",
* data_in[offset] & 0xff, (nack != 0) ? "*" : "");
++offset;
* }
*/
}
// Stop the capture
//BeagleApi.bg_disable(handle);
return(lines);
}
