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JanVNA2_comms.cpp
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JanVNA2_comms.cpp
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#pragma hdrstop
#include "JanVNA2_comms.h"
#include "CommsUnit.h"
#include "DataUnit.h"
#include "Unit1.h"
#include "SettingsUnit.h"
#pragma package(smart_init)
#define CDBM_SCALE 100
// *******************************
// protocol
const int EP_Data_Out_Addr = 0x01;
const int EP_Data_In_Addr = 0x81;
const int EP_Log_In_Addr = 0x82;
const uint8_t header_magic = 0x5A;
const uint16_t Version = 1;
// *******************************
class Encoder
{
public:
Encoder(uint8_t *buf, uint16_t size) :
buf(buf),
bufSize(size),
usedSize(0),
bitpos(0)
{
memset(buf, 0, size);
};
template<typename T> bool add(T data)
{
if (bitpos != 0)
{
// add padding to next byte boundary
bitpos = 0;
usedSize++;
}
if (bufSize - usedSize < (long) sizeof(T))
{
// not enough space left
return false;
}
memcpy(&buf[usedSize], &data, sizeof(T));
usedSize += sizeof(T);
return true;
}
bool addBits(uint8_t value, uint8_t bits)
{
if (bits >= 8 || usedSize >= bufSize)
{
return false;
}
buf[usedSize] |= (value << bitpos) & 0xFF;
bitpos += bits;
if (bitpos > 8)
{
// the value did not fit completely into the current byte
if (usedSize >= bufSize - 1)
{
// already at maximum limit, not enough space for remaining bits
return false;
}
// move access to next byte
bitpos -= 8;
usedSize++;
// add remaining bytes
buf[usedSize] = value >> (bits - bitpos);
}
else
if (bitpos == 8)
{
bitpos = 0;
usedSize++;
}
return true;
}
uint16_t getSize() const
{
if (bitpos == 0)
{
return usedSize;
}
else
{
return usedSize + 1;
}
};
private:
uint8_t *buf;
uint16_t bufSize;
uint16_t usedSize;
uint8_t bitpos;
};
class Decoder
{
public:
Decoder(const uint8_t *buf) :
buf(buf),
usedSize(0),
bitpos(0)
{
};
template<typename T> void get(T &t)
{
if (bitpos != 0)
{
// add padding to next byte boundary
bitpos = 0;
usedSize++;
}
// still enough bytes available
memcpy(&t, &buf[usedSize], sizeof(T));
usedSize += sizeof(T);
}
uint8_t getBits(uint8_t bits)
{
if (bits >= 8)
{
return 0;
}
uint8_t mask = 0x00;
for(uint8_t i=0;i<bits;i++)
{
mask <<= 1;
mask |= 0x01;
}
uint8_t value = (buf[usedSize] >> bitpos) & mask;
bitpos += bits;
if (bitpos > 8)
{
// the current byte did not contain the complete value
// move access to next byte
bitpos -= 8;
usedSize++;
// get remaining bits
value |= (buf[usedSize] << (bits - bitpos)) & mask;
}
else
if (bitpos == 8)
{
bitpos = 0;
usedSize++;
}
return value;
}
private:
const uint8_t *buf;
uint16_t usedSize;
uint8_t bitpos;
};
/*
uint16_t Protocol::EncodePacket(const PacketInfo &packet, uint8_t *dest, uint16_t destsize)
{
int16_t payload_size = 0;
switch (packet.type)
{
case PacketType::Datapoint:
payload_size = EncodeDatapoint(packet.datapoint, &dest[4], destsize - 8);
break;
case PacketType::SweepSettings:
payload_size = EncodeSweepSettings(packet.settings, &dest[4], destsize - 8);
break;
case PacketType::Reference:
payload_size = EncodeReferenceSettings(packet.reference, &dest[4], destsize - 8);
break;
case PacketType::DeviceInfo:
payload_size = EncodeDeviceInfo(packet.info, &dest[4], destsize - 8);
break;
case PacketType::Status:
payload_size = EncodeStatus(packet.status, &dest[4], destsize - 8);
break;
case PacketType::ManualControl:
payload_size = EncodeManualControl(packet.manual, &dest[4], destsize - 8);
break;
case PacketType::FirmwarePacket:
payload_size = EncodeFirmwarePacket(packet.firmware, &dest[4], destsize - 8);
break;
case PacketType::Generator:
payload_size = EncodeGeneratorSettings(packet.generator, &dest[4], destsize - 8);
break;
case PacketType::SpectrumAnalyzerSettings:
payload_size = EncodeSpectrumAnalyzerSettings(packet.spectrumSettings, &dest[4], destsize - 8);
break;
case PacketType::SpectrumAnalyzerResult:
payload_size = EncodeSpectrumAnalyzerResult(packet.spectrumResult, &dest[4], destsize - 8);
break;
case PacketType::Ack:
case PacketType::PerformFirmwareUpdate:
case PacketType::ClearFlash:
case PacketType::Nack:
case PacketType::RequestDeviceInfo:
// no payload, nothing to do
break;
case PacketType::None:
break;
}
if (payload_size < 0 || payload_size + 8 > destsize)
{
// encoding failed, buffer too small
return 0;
}
// Write header
dest[0] = header;
uint16_t overall_size = payload_size + 8;
memcpy(&dest[1], &overall_size, 2);
dest[3] = (int)packet.type;
// Calculate checksum
uint32_t crc = 0x00000000;
if (packet.type == PacketType::Datapoint)
{
// CRC calculation takes about 18us which is the bulk of the time required to encode and transmit a datapoint.
// Skip CRC for data points to optimize throughput
crc = 0x00000000;
}
else
{
crc = CRC32(0, dest, overall_size - 4);
}
memcpy(&dest[overall_size - 4], &crc, 4);
return overall_size;
}
*/
// *******************************
CUSBRx::CUSBRx(libusb_context *ctx, libusb_device_handle *handle, const uint8_t end_point, const int buffer_size, t_usb_in_data_callback on_data_cb)
{
int res = 0;
m_event = CreateEvent(NULL, TRUE, FALSE, NULL);
m_ctx = ctx;
m_handle = handle;
m_on_data_callback = on_data_cb;
m_data_buffer_wr = 0;
int num_iso_pack = 0;
// int num_iso_pack = 16;
m_transfer_buffer.resize(4096);
if (buffer_size > 0)
m_data_buffer.resize(buffer_size);
try
{
m_transfer = libusb_alloc_transfer(num_iso_pack);
if (m_transfer)
{
if (num_iso_pack > 0)
{
libusb_fill_iso_transfer(m_transfer, m_handle, end_point, &m_transfer_buffer[0], m_transfer_buffer.size(), num_iso_pack, callback, this, 100);
libusb_set_iso_packet_lengths(m_transfer, m_transfer_buffer.size() / num_iso_pack);
}
else
{
libusb_fill_bulk_transfer(m_transfer, m_handle, end_point, &m_transfer_buffer[0], m_transfer_buffer.size(), callback, this, 100);
}
res = libusb_submit_transfer(m_transfer);
if (res < 0)
libusb_free_transfer(m_transfer);
}
}
catch (Exception &exception)
{
//exception.ToString());
}
if (res < 0 && Form1)
{
const char *str = libusb_strerror(res);
String s = "rx: usb rx transfer submit error";
if (str != NULL)
s += ": " + String(str);
Form1->pushCommMessage(s);
}
}
CUSBRx::~CUSBRx()
{
if (m_transfer)
{
int res;
// clear event flag
if (m_event)
ResetEvent(m_event);
// cancel transfers
try
{
res = libusb_cancel_transfer(m_transfer);
}
catch (...)
{
}
if (res < 0 && Form1)
{
const char *str = libusb_strerror(res);
String s = "rx: usb rx transfer cancel error";
if (str != NULL)
s += ": " + String(str);
Form1->pushCommMessage(s);
}
// wait for cancellation to complete
if (m_event)
{
res = 0;
DWORD ret = WAIT_OBJECT_0;
for (int i = 0; i < 50; i++)
{
int completed = 0;
struct timeval tv = {0, 1000};
res = libusb_handle_events_timeout_completed(m_ctx, &tv, &completed);
if (res < 0)
break;
ret = WaitForSingleObject(m_event, 1);
//if (ret == WAIT_OBJECT_0 || completed != 0)
if (ret == WAIT_OBJECT_0)
break;
}
if (Form1)
{
if (res < 0)
{
const char *str = libusb_strerror(res);
String s = "rx: usb rx transfer handle error";
if (str != NULL)
s += ": " + String(str);
Form1->pushCommMessage(s);
}
if (ret != WAIT_OBJECT_0)
Form1->pushCommMessage("rx: usb rx transfer cancel timed out");
}
}
}
HANDLE event = m_event;
m_event = NULL;
m_transfer = NULL;
m_ctx = NULL;
m_handle = NULL;
m_on_data_callback = NULL;
if (event)
CloseHandle(event);
}
void __fastcall CUSBRx::addTransferData(libusb_transfer *transfer)
{
if (transfer == NULL)
return;
const uint8_t *buf = (uint8_t *)transfer->buffer;
const int len = transfer->actual_length;
if (buf && len > 0)
{ // copy the data into our buffer
memcpy(&m_data_buffer[m_data_buffer_wr], buf, len);
m_data_buffer_wr += len;
if (m_data_buffer_wr >= ((int)m_data_buffer.size() / 2) && Form1)
{
String s;
s.printf(L"rx: usb rx transfer more than half full %d/%u", m_data_buffer_wr, m_data_buffer.size());
Form1->pushCommMessage(s);
}
#if 0
// TEST ONLY
String s;
s.printf(L"transfer cb %d\n", len);
common.logFileAppend(s + "\n");
#endif
}
if (len >= (transfer->length / 2))
{ // the buffer is quite full .. double it's size
m_transfer_buffer.resize(m_transfer_buffer.size() * 2);
transfer->buffer = &m_transfer_buffer[0];
transfer->length = m_transfer_buffer.size();
if (Form1)
{
String s;
s.printf(L"rx: usb rx transfer buffer was more than half full %d, increased size to %u", len, m_transfer_buffer.size());
Form1->pushCommMessage(s);
}
}
int res = 0;
try
{
res = libusb_submit_transfer(transfer);
if (res < 0)
libusb_free_transfer(transfer);
}
catch (...)
{
}
if (res < 0)
{
const char *str = libusb_strerror(res);
if (Form1 && str != NULL)
Form1->pushCommMessage("rx: usb buffer submit error: " + String(str));
}
if (transfer->status == LIBUSB_TRANSFER_TIMED_OUT)
{
if (Form1 && len != 0)
{
String s;
s.printf(L"rx: usb buffer timed out .. ep %02X act-len %d flags %02X", transfer->endpoint, len, transfer->flags);
Form1->pushCommMessage(s);
}
}
}
void __fastcall CUSBRx::processCallback(libusb_transfer *transfer)
{
int res;
if (transfer == NULL)
return;
switch (transfer->type)
{
case LIBUSB_TRANSFER_TYPE_CONTROL:
if (Form1)
Form1->pushCommMessage("rx: usb rx transfer type control");
break;
case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
if (Form1)
Form1->pushCommMessage("rx: usb rx transfer type iso");
for (int packet = 0; packet < transfer->num_iso_packets; packet++)
{
struct libusb_iso_packet_descriptor *pack = &transfer->iso_packet_desc[packet];
if (pack->status != LIBUSB_TRANSFER_COMPLETED)
{
String s;
s.printf(L"rx: usb rx transfer iso error .. pack %d status %d", packet, pack->status);
if (Form1)
Form1->pushCommMessage(s);
}
else
{
// const uint8_t *buf = libusb_get_iso_packet_buffer(transfer, packet);
// if (buf && len > 0)
// { // copy the data into our buffer
// memcpy(&m_data_buffer[m_data_buffer_wr], buf, len);
// m_data_buffer_wr += len;
//
// if (m_data_buffer_wr >= ((int)m_data_buffer.size() / 2) && Form1)
// Form1->pushCommMessage("rx: usb rx transfer half full");
// }
if (Form1)
{
String s;
s.printf(L"rx: usb rx transfer .. pack %d length %u actual_length %u", packet, pack->length, pack->actual_length);
Form1->pushCommMessage(s);
}
}
}
break;
case LIBUSB_TRANSFER_TYPE_BULK:
// if (Form1)
// Form1->pushCommMessage("rx: usb rx transfer type bulk");
if (transfer->status == LIBUSB_TRANSFER_COMPLETED || transfer->status == LIBUSB_TRANSFER_TIMED_OUT)
{
addTransferData(transfer);
#if 0
// TEST ONLY
if (transfer->endpoint == EP_Data_In_Addr)
common.dataFileAppend(transfer->buffer, transfer->actual_length);
#endif
}
break;
case LIBUSB_TRANSFER_TYPE_INTERRUPT:
// if (Form1)
// Form1->pushCommMessage("rx: usb rx transfer type interrupt");
break;
case LIBUSB_TRANSFER_TYPE_BULK_STREAM:
if (Form1)
Form1->pushCommMessage("rx: usb rx transfer type bulk stream");
break;
}
switch (transfer->status)
{
case LIBUSB_TRANSFER_COMPLETED:
break;
case LIBUSB_TRANSFER_NO_DEVICE:
if (Form1)
Form1->pushCommMessage("rx: usb rx transfer no device");
if ((transfer->flags & LIBUSB_TRANSFER_FREE_TRANSFER) == 0)
{
try
{
libusb_free_transfer(transfer);
}
catch (...)
{
}
}
transfer = NULL;
break;
case LIBUSB_TRANSFER_ERROR:
case LIBUSB_TRANSFER_OVERFLOW:
case LIBUSB_TRANSFER_STALL:
if (Form1)
Form1->pushCommMessage("rx: usb rx transfer error [" + IntToStr(transfer->status) + "]");
if ((transfer->flags & LIBUSB_TRANSFER_FREE_TRANSFER) == 0)
{
try
{
libusb_free_transfer(transfer);
}
catch (...)
{
}
}
transfer = NULL;
break;
case LIBUSB_TRANSFER_CANCELLED:
//if (Form1)
// Form1->pushCommMessage("rx: usb rx transfer cancelled");
if ((transfer->flags & LIBUSB_TRANSFER_FREE_TRANSFER) == 0)
{
try
{
libusb_free_transfer(transfer);
}
catch (...)
{
}
}
if (m_event)
SetEvent(m_event); // let the owner know we have cancelled the transfers
transfer = NULL;
break;
case LIBUSB_TRANSFER_TIMED_OUT:
if (Form1 && transfer->actual_length != 0)
{
String s;
s.printf(L"rx: usb rx transfer timed out .. ep %02X act-len %d flags %02X", transfer->endpoint, transfer->actual_length, transfer->flags);
Form1->pushCommMessage(s);
}
break;
default:
if (Form1)
Form1->pushCommMessage("rx: usb rx transfer unknown status [" + UIntToStr((uint32_t)transfer->status) + "]");
break;
}
if (m_on_data_callback && m_data_buffer_wr > 0)
{
const int bytes_used = m_on_data_callback((TObject *)this, m_data_buffer, m_data_buffer_wr);
// remove the used bytes
if (bytes_used >= m_data_buffer_wr)
{
m_data_buffer_wr = 0;
}
else
if (bytes_used > 0)
{
memmove(&m_data_buffer[0], &m_data_buffer[bytes_used], m_data_buffer_wr - bytes_used);
m_data_buffer_wr -= bytes_used;
}
}
}
// *******************************
CJanVNA2_comms janvna2_comms;
CJanVNA2_comms::CJanVNA2_comms()
{
m_usb_rx_data = NULL;
m_usb_in_log = NULL;
m_device.hdev = NULL;
// m_events_thread_priority = tpTimeCritical; // tpIdle tpLowest tpNormal tpHighest tpTimeCritical
m_events_thread_priority = tpNormal; // tpIdle tpLowest tpNormal tpHighest tpTimeCritical
m_events_thread = NULL;
m_thread = NULL;
m_data_tx.buffer.resize(4096);
m_data_tx.index_wr = 0;
m_rx_packets.packet_rd = 0;
m_rx_packets.packet_wr = 0;
reset(false);
}
CJanVNA2_comms::~CJanVNA2_comms()
{
stopThread();
closeDevice();
}
bool __fastcall CJanVNA2_comms::startThread()
{
if (m_events_thread == NULL)
m_events_thread = new CJanVNA2EventsThread(&threadEventsProcess, true, &m_events_thread);
if (m_events_thread == NULL)
{
stopThread();
return false;
}
if (m_thread == NULL)
m_thread = new CJanVNA2Thread(&threadProcess, true, &m_thread);
if (m_thread == NULL)
{
stopThread();
return false;
}
return true;
}
void __fastcall CJanVNA2_comms::stopThread(const bool local)
{
CJanVNA2EventsThread *events_thread = m_events_thread;
m_events_thread = NULL;
CJanVNA2Thread *thread = m_thread;
m_thread = NULL;
// HANDLE handle = GetCurrentProcess();
// HANDLE thread_handle = GetCurrentThread();
if (events_thread != NULL)
{
events_thread->m_process = NULL;
events_thread->Terminate();
}
if (thread != NULL)
{
thread->m_process = NULL;
thread->Terminate();
}
}
void __fastcall CJanVNA2_comms::reset(const bool reset_vna)
{
m_mode = MODE_NONE;
m_new_mode = MODE_NONE;
m_max_retries = 4;
m_retries = 0;
m_pause_comms = false;
m_ack_timeout_ms = 800;
m_poll_ms = DEFAULT_POLL_JANVNAV2_MS;
m_device_info_ok = false;
m_ack = false;
m_nack = false;
m_data_tx.index_wr = 0;
m_update_sweep_settings = false;
m_update_generator_settings = false;
m_output_power = IROUND(DEFAULT_JANVNAV2_MAX_CDBM * CDBM_SCALE);
// default sweep settings
m_own_sweep_settings.f_start = data_unit.m_freq_start_Hz;
m_own_sweep_settings.f_stop = data_unit.m_freq_stop_Hz;
m_own_sweep_settings.points = data_unit.m_points;
m_own_sweep_settings.if_bandwidth = data_unit.m_bandwidth_Hz;
m_own_sweep_settings.cdbm_excitation = m_output_power;
m_own_sweep_settings.excitePort1 = 1;
m_own_sweep_settings.excitePort2 = 0;
m_own_sweep_settings.suppressPeaks = 1;
// default generator settings
m_own_generator_settings.frequency = data_unit.m_freq_cw_Hz;
m_own_generator_settings.cdbm_level = m_output_power;
m_own_generator_settings.activePort = 1; // 0 = off, 1 = port 1, 2 = port 2
//CCriticalSection cs(m_rx_packets.cs);
m_rx_packets.packet_rd = 0;
m_rx_packets.packet_wr = 0;
}
void __fastcall CJanVNA2_comms::setSweepSettings(const bool update)
{
if (update)
{
m_own_sweep_settings.f_start = data_unit.m_freq_start_Hz;
m_own_sweep_settings.f_stop = data_unit.m_freq_stop_Hz;
m_own_sweep_settings.points = data_unit.m_points;
m_own_sweep_settings.if_bandwidth = data_unit.m_bandwidth_Hz;
m_own_sweep_settings.cdbm_excitation = m_output_power;
m_own_sweep_settings.excitePort1 = 1;
m_own_sweep_settings.excitePort2 = 0;
m_own_sweep_settings.suppressPeaks = 1;
}
m_update_sweep_settings = true;
}
void __fastcall CJanVNA2_comms::setGeneratorSettings(const bool update)
{
if (update)
{
m_own_generator_settings.frequency = data_unit.m_freq_cw_Hz;
m_own_generator_settings.cdbm_level = m_output_power;
m_own_generator_settings.activePort = 1; // 0 = off, 1 = port 1, 2 = port 2
}
m_update_generator_settings = true;
}
float __fastcall CJanVNA2_comms::minOutputPowerdBm()
{
return m_device_info_ok ? (float)m_device_info.limits_cdbm_min / CDBM_SCALE : DEFAULT_JANVNAV2_MIN_CDBM;
}
float __fastcall CJanVNA2_comms::maxOutputPowerdBm()
{
return m_device_info_ok ? (float)m_device_info.limits_cdbm_max / CDBM_SCALE : DEFAULT_JANVNAV2_MAX_CDBM;
}
void __fastcall CJanVNA2_comms::setOutputPower(const float dBm)
{
const int cdBm_max = m_device_info_ok ? m_device_info.limits_cdbm_max : IROUND(DEFAULT_JANVNAV2_MAX_CDBM * CDBM_SCALE);
const int cdBm_min = m_device_info_ok ? m_device_info.limits_cdbm_min : IROUND(DEFAULT_JANVNAV2_MIN_CDBM * CDBM_SCALE);
int power = IROUND(dBm * CDBM_SCALE);
if (power < cdBm_min) power = cdBm_min;
else
if (power > cdBm_max) power = cdBm_max;
m_output_power = power;
m_own_sweep_settings.cdbm_excitation = m_output_power;
m_own_generator_settings.cdbm_level = m_output_power;
if (connected)
{
switch (m_mode)
{
case MODE_INIT1:
case MODE_INIT2:
case MODE_IDLE:
case MODE_POLL:
case MODE_SINGLE_SCAN:
case MODE_SCAN:
m_update_sweep_settings = true;
break;
case MODE_GENERATOR:
m_update_generator_settings = true;
break;
default:
break;
}
}
}
String __fastcall CJanVNA2_comms::packetTypeToStr(const PacketType packet_type)
{
switch (packet_type)
{
case PacketType::None: return "None";
case PacketType::Datapoint: return "Datapoint";
case PacketType::SweepSettings: return "SweepSettings";
case PacketType::Status: return "Status";
case PacketType::ManualControl: return "ManualControl";
case PacketType::DeviceInfo: return "DeviceInfo";
case PacketType::FirmwarePacket: return "FirmwarePacket";
case PacketType::Ack: return "Ack";
case PacketType::ClearFlash: return "ClearFlash";
case PacketType::PerformFirmwareUpdate: return "PerformFirmwareUpdate";
case PacketType::Nack: return "Nack";
case PacketType::Reference: return "Reference";
case PacketType::Generator: return "Generator";
case PacketType::SpectrumAnalyzerSettings: return "SpectrumAnalyzerSettings";
case PacketType::SpectrumAnalyzerResult: return "SpectrumAnalyzerResult";
case PacketType::RequestDeviceInfo: return "RequestDeviceInfo";
default: return "Unknown " + IntToStr((int)packet_type);
};
}
String __fastcall CJanVNA2_comms::usbSpeedToStr(const int usb_speed)
{
switch (usb_speed)
{
default:
case LIBUSB_SPEED_UNKNOWN: return "USB-Unknown";
case LIBUSB_SPEED_LOW: return "USB2.0_Low";
case LIBUSB_SPEED_FULL: return "USB2.0_Full";
case LIBUSB_SPEED_HIGH: return "USB2.0_High";
case LIBUSB_SPEED_SUPER: return "USB3.0";
case LIBUSB_SPEED_SUPER_PLUS: return "USB3.0+";
}
}
String __fastcall CJanVNA2_comms::usbClassToStr(const uint8_t usb_class)
{
switch (usb_class)
{
case LIBUSB_CLASS_PER_INTERFACE: return "CLASS_PER_INTERFACE";
case LIBUSB_CLASS_AUDIO: return "CLASS_AUDIO";
case LIBUSB_CLASS_COMM: return "CLASS_COMM";
case LIBUSB_CLASS_HID: return "CLASS_HID";
case LIBUSB_CLASS_PHYSICAL: return "CLASS_PHYSICAL";
case LIBUSB_CLASS_PRINTER: return "CLASS_PRINTER";
// case LIBUSB_CLASS_PTP: return "CLASS_PTP";
case LIBUSB_CLASS_IMAGE: return "CLASS_PTP/IMAGE";
case LIBUSB_CLASS_MASS_STORAGE: return "CLASS_MASS_STORAGE";
case LIBUSB_CLASS_HUB: return "CLASS_HUB";
case LIBUSB_CLASS_DATA: return "CLASS_DATA";
case LIBUSB_CLASS_SMART_CARD: return "CLASS_SMART_CARD";
case LIBUSB_CLASS_CONTENT_SECURITY: return "CLASS_CONTENT_SECURITY";
case LIBUSB_CLASS_VIDEO: return "CLASS_VIDEO";
case LIBUSB_CLASS_PERSONAL_HEALTHCARE: return "CLASS_PERSONAL_HEALTHCARE";
case LIBUSB_CLASS_DIAGNOSTIC_DEVICE: return "CLASS_DIAGNOSTIC_DEVICE";
case LIBUSB_CLASS_WIRELESS: return "CLASS_WIRELESS";
case LIBUSB_CLASS_APPLICATION: return "CLASS_APPLICATION";
case LIBUSB_CLASS_VENDOR_SPEC: return "CLASS_VENDOR_SPEC";
default: return "CLASS_UNKNOWN";
}
}
bool __fastcall CJanVNA2_comms::queueTxPacket(const PacketType packet_type, const void *data, const int data_size)
{
if (m_device.hdev == NULL)
return false;
if (data_size < 0)
return false;
if (data_size > 0 && !data)
return false;
const int size = sizeof(t_janvna2_header) + data_size + sizeof(uint32_t);
const int space = m_data_tx.buffer.size() - m_data_tx.index_wr;
if (space < size)
{
if (Form1)
Form1->pushCommMessage("tx: not enough buffer space");
return false;
}
std::vector <uint8_t> packet(size);
t_janvna2_header *p_header = (t_janvna2_header *)&packet[0];
uint8_t *p_data = &packet[sizeof(t_janvna2_header)];
uint32_t *p_crc = (uint32_t *)&packet[sizeof(t_janvna2_header) + data_size];
p_header->magic = header_magic;
p_header->total_length = size;
p_header->packet_type = (uint8_t)packet_type;
if (data_size > 0)
memcpy(p_data, data, data_size);
*p_crc = crc32(0x00000000, &packet[0], size - sizeof(uint32_t));
m_ack_timer.mark();
m_ack = false;
m_nack = false;
memcpy(&m_data_tx.buffer[m_data_tx.index_wr], &packet[0], size);
m_data_tx.index_wr += size;
#if 1
if (Form1)
{
String s;
s.printf(L"tx: [%s] %d %08X %d/%u {", packetTypeToStr((PacketType)p_header->packet_type).c_str(), size, *p_crc, m_data_tx.index_wr, m_data_tx.buffer.size());
for (unsigned int i = 0; i < packet.size(); i++)
s += IntToHex(packet[i], 2) + " ";
s = s.Trim() + "}";
Form1->pushCommMessage(s);
}
#endif
return true;
}
void __fastcall CJanVNA2_comms::sendRequestDeviceInfo()
{
queueTxPacket(PacketType::RequestDeviceInfo, NULL, 0);
}
void __fastcall CJanVNA2_comms::sendSweepSettings(const bool idle)
{
t_janvna2_sweepSettings sweep_settings;
const uint64_t maxFreq = m_device_info_ok ? m_device_info.limits_maxFreq : MAX_VNA_JANVNAV2_FREQ_HZ;
const uint64_t minFreq = m_device_info_ok ? m_device_info.limits_minFreq : MIN_VNA_JANVNAV2_FREQ_HZ;
if (m_own_sweep_settings.f_start > maxFreq) m_own_sweep_settings.f_start = maxFreq;
else
if (m_own_sweep_settings.f_start < minFreq) m_own_sweep_settings.f_start = minFreq;
if (m_own_sweep_settings.f_stop > maxFreq) m_own_sweep_settings.f_stop = maxFreq;
else
if (m_own_sweep_settings.f_stop < minFreq) m_own_sweep_settings.f_stop = minFreq;
const int maxPoints = m_device_info_ok ? m_device_info.limits_maxPoints : DEFAULT_JANVNAV2_MAX_POINTS;
const int minPoints = 2;
if (m_own_sweep_settings.points > maxPoints) m_own_sweep_settings.points = maxPoints;
else
if (m_own_sweep_settings.points < minPoints) m_own_sweep_settings.points = minPoints;
const uint32_t maxIFBW = m_device_info_ok ? m_device_info.limits_maxIFBW : DEFAULT_JANVNAV2_MAX_IF_BW;
const uint32_t minIFBW = m_device_info_ok ? m_device_info.limits_minIFBW : DEFAULT_JANVNAV2_MIN_IF_BW;
if (m_own_sweep_settings.if_bandwidth > maxIFBW) m_own_sweep_settings.if_bandwidth = maxIFBW;
else
if (m_own_sweep_settings.if_bandwidth < minIFBW) m_own_sweep_settings.if_bandwidth = minIFBW;
const int cdBm_max = m_device_info_ok ? m_device_info.limits_cdbm_max : IROUND(DEFAULT_JANVNAV2_MAX_CDBM * CDBM_SCALE);
const int cdBm_min = m_device_info_ok ? m_device_info.limits_cdbm_min : IROUND(DEFAULT_JANVNAV2_MIN_CDBM * CDBM_SCALE);
if (m_own_sweep_settings.cdbm_excitation > cdBm_max) m_own_sweep_settings.cdbm_excitation = cdBm_max;
else
if (m_own_sweep_settings.cdbm_excitation < cdBm_min) m_own_sweep_settings.cdbm_excitation = cdBm_min;
sweep_settings.f_start = m_own_sweep_settings.f_start;
sweep_settings.f_stop = m_own_sweep_settings.f_stop;
sweep_settings.points = m_own_sweep_settings.points;
sweep_settings.if_bandwidth = m_own_sweep_settings.if_bandwidth;
sweep_settings.cdbm_excitation = m_own_sweep_settings.cdbm_excitation;
sweep_settings.excitePort1 = idle ? 0 : m_own_sweep_settings.excitePort1; // '0' stops it sweeping
sweep_settings.excitePort2 = idle ? 0 : m_own_sweep_settings.excitePort2; // '0' stops it sweeping
sweep_settings.suppressPeaks = m_own_sweep_settings.suppressPeaks;
if (temp_buf.size() < sizeof(t_janvna2_sweepSettings))
temp_buf.resize(sizeof(t_janvna2_sweepSettings)); // just need to ensure the buffer is big enough to hold the final packet
Encoder e(&temp_buf[0], temp_buf.size());
e.add <uint64_t> (sweep_settings.f_start);
e.add <uint64_t> (sweep_settings.f_stop);
e.add <uint16_t> (sweep_settings.points);
e.add <uint32_t> (sweep_settings.if_bandwidth);
e.add <int16_t> (sweep_settings.cdbm_excitation);
e.addBits(sweep_settings.excitePort1, 1);
e.addBits(sweep_settings.excitePort2, 1);
e.addBits(sweep_settings.suppressPeaks, 1);
const int data_size = e.getSize();
queueTxPacket(PacketType::SweepSettings, &temp_buf[0], data_size);
data_unit.m_bandwidth_Hz = sweep_settings.if_bandwidth;
if (Form1)
{
String s;
s = "tx: start " + common.freqToStr1(sweep_settings.f_start, true, true, 6, false) + "Hz";
Form1->pushCommMessage(s);
s = "tx: stop " + common.freqToStr1(sweep_settings.f_stop, true, true, 6, false) + "Hz";
Form1->pushCommMessage(s);
Form1->printfCommMessage("tx: points %u", sweep_settings.points);
Form1->printfCommMessage("tx: if_bandwidth %u", sweep_settings.if_bandwidth);
Form1->printfCommMessage("tx: cdbm_excitation %d", sweep_settings.cdbm_excitation);
Form1->printfCommMessage("tx: excitePort1 %u", sweep_settings.excitePort1);
Form1->printfCommMessage("tx: excitePort2 %u", sweep_settings.excitePort2);