public static void spidump(int max_bytes, int num_packets)
{
// Get the size of timing information for each transaction of size
// max_bytes
int timing_size = BeagleApi.bg_bit_timing_size(
BeagleProtocol.BG_PROTOCOL_SPI, max_bytes);
byte[] data_mosi = new byte[max_bytes];
byte[] data_miso = new byte[max_bytes];
uint[] timing = new uint[timing_size];
// Get the current sampling rate
int samplerate_khz = BeagleApi.bg_samplerate(beagle, 0);
int i;
// Start the capture
if (BeagleApi.bg_enable(beagle, BeagleProtocol.BG_PROTOCOL_SPI) !=
(int)BeagleStatus.BG_OK)
{
Console.Write("error: could not enable SPI capture; exiting...\n");
Environment.Exit(1);
}
Console.Write("index,time(ns),SPI,status,mosi0/miso0 ... " +
"mosiN/misoN\n");
Console.Out.Flush();
// Capture and print information for each transaction
for (i = 0; i < num_packets || num_packets == 0; ++i)
{
uint status = 0;
ulong time_sop = 0;
ulong time_sop_ns = 0;
ulong time_duration = 0;
uint time_dataoffset = 0;
int n = 0;
// Read transaction with bit timing data
int count = BeagleApi.bg_spi_read_bit_timing(beagle, ref status,
ref time_sop, ref time_duration,
ref time_dataoffset,
max_bytes, data_mosi,
max_bytes, data_miso,
timing_size, timing);
// Translate timestamp to ns
time_sop_ns = TIMESTAMP_TO_NS(time_sop, samplerate_khz);
Console.Write("{0:d},{1:d},SPI,(", i, time_sop_ns);
if (count < 0)
{
Console.Write("error={0:d},", count);
}
print_general_status(status);
print_spi_status(status);
Console.Write(")");
// Check for errors
if (count <= 0)
{
Console.Write("\n");
Console.Out.Flush();
if (count < 0)
{
break;
}
// If zero data captured, continue
continue;
}
// Display the data
for (n = 0; n < count; ++n)
{
if (n != 0)
{
Console.Write(", ");
}
if ((n & 0xf) == 0)
{
Console.Write("\n ");
}
Console.Write("{0:x2}/{1:x2}", data_mosi[n], data_miso[n]);
}
Console.Write("\n");
Console.Out.Flush();
}
// Stop the capture
BeagleApi.bg_disable(beagle);
}
