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RBW Cal

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RBW Cal, traces again
This commit is contained in:
M0WID 2020-10-15 22:37:01 +01:00
parent 3057a73b20
commit 5490709654
10 changed files with 127 additions and 24 deletions
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4
Bandscope.ino
View File

@ -169,7 +169,7 @@ static uint16_t chunkIndex;
autoSweepFreqStep = ( setting.BandscopeSpan ) / sweepPoints;
offsetFreqIncrement = autoSweepFreqStep; // 2500 Hz for 200kHz span, 80 points per sweep
bandwidth = rcvr.SetRBW ( setting.BandscopeRBW10, &delaytime ); // Set it in the receiver Si4432
bandwidth = rcvr.SetRBW ( setting.BandscopeRBW10, &delaytime, &bpfIndex ); // Set it in the receiver Si4432
//Serial.printf("set rcvr Freq get:%u, tempIF:%u\n", rcvr.GetFrequency(), tempIF);
rcvr.SetFrequency ( setting.IF_Freq + 1300 ); // Set the RX Si4432 to the IF frequency, offset a bit
@ -185,7 +185,7 @@ static uint16_t chunkIndex;
}
// pre-calculate adjustment for RSSI values
dBadjust = (double)setting.Attenuate - 120.0 + setting.LevelOffset - setting.ExternalGain;
dBadjust = (double)setting.Attenuate - 120.0 + setting.LevelOffset - setting.ExternalGain + bpfCalibrations[bpfIndex];
Serial.printf("Bandscope dBadjust = %f; leveloffset = %f; attenuate = %i, ext gain = %f\n",
dBadjust, setting.LevelOffset, setting.Attenuate, setting.ExternalGain);

4
IFsweep.ino
View File

@ -76,7 +76,7 @@ static uint16_t chunkIndex;
vbw = autoSweepFreqStep / 1000.0; // Set the video resolution
bandwidth = rcvr.SetRBW ( 106.0, &delaytime ); // Set it in the receiver Si4432. delaytime is returned
bandwidth = rcvr.SetRBW ( 106.0, &delaytime, &bpfIndex ); // Set it in the receiver Si4432. delaytime is returned
sweepPoints = displayPoints; // At least the right number of points for the display
@ -85,7 +85,7 @@ static uint16_t chunkIndex;
att.SetAtten ( 0 ); // Set the internal attenuator
// pre-calculate adjustment for RSSI values
dBadjust = -120.0 + setting.LevelOffset - setting.ExternalGain;
dBadjust = -120.0 + setting.LevelOffset - setting.ExternalGain + bpfCalibrations[bpfIndex] ;
Serial.printf("IFSweep dBadjust = %f; leveloffset = %f; attenuate = %i, ext gain = %f\n",
dBadjust, setting.LevelOffset, setting.Attenuate, setting.ExternalGain);

2
RXsweep.ino
View File

@ -123,7 +123,7 @@ static uint16_t bpfCalFirstSweepDone;
/*
* Use the RBW setting. If zero then it is meaningless, use smallest instead
*/
bandwidth = rcvr.SetRBW ( currentRBW10, &delaytime ); // Set it in the receiver Si4432. delaytime is returned
bandwidth = rcvr.SetRBW ( currentRBW10, &delaytime, &bpfIndex ); // Set it in the receiver Si4432. delaytime is returned
sweepPoints = displayPoints;

8
SweepLo.ino
View File

@ -111,7 +111,7 @@ static uint32_t tgIF; // Track gen IF - SA IF plus any offset if both SI4432
if ( requiredRBW10 != old_requiredRBW10 )
{
bandwidth = rcvr.SetRBW ( requiredRBW10, &delaytime ); // Set it in the receiver Si4432
bandwidth = rcvr.SetRBW ( requiredRBW10, &delaytime, &bpfIndex ); // Set it in the receiver Si4432
old_requiredRBW10 = requiredRBW10;
}
@ -143,9 +143,9 @@ static uint32_t tgIF; // Track gen IF - SA IF plus any offset if both SI4432
}
// pre-calculate adjustment for RSSI values
dBadjust = (double)setting.Attenuate - 120.0 + setting.LevelOffset - setting.ExternalGain;
//Serial.printf("SweepLo dBadjust = %f; leveloffset = %f; attenuate = %i, ext gain = %f\n",
// dBadjust, setting.LevelOffset, setting.Attenuate, setting.ExternalGain);
dBadjust = (double)setting.Attenuate - 120.0 + setting.LevelOffset - setting.ExternalGain + bpfCalibrations[bpfIndex];
Serial.printf("SweepLo dBadjust = %f; leveloffset = %f; attenuate = %i, ext gain = %f\n",
dBadjust, setting.LevelOffset, setting.Attenuate, setting.ExternalGain);
resetAverage = changedSetting;

19
cmd.cpp
View File

@ -70,6 +70,7 @@ extern uint8_t myStorage[SCREEN_WIDTH+1];
extern float bandwidth; // The current bandwidth (not * 10)
extern unsigned long delaytime; // In microseconds
extern uint16_t bpfIndex; // RBW bandpass Filter in use
extern unsigned long offsetDelayTime; // In microseconds
extern unsigned long wiFiTargetTime;
@ -395,17 +396,23 @@ int16_t index = 0; // Index to the buffer
while ( Serial.available () ) // While data to read
{
c = toupper ( Serial.read () ); // Get next character
Serial.print(c); // Echo
Serial.printf("(%02X)", c); // debug
if (( c == '\r' ) || ( c == '\n' )) // End of the line?
if (( c == '\r' ) || ( c == '\n' )) // End of the line?
{
inBuff[index++] = '\0'; // Replace with a null
Serial.println("EOL"); // debug
return ParseCommand ( inBuff ); // Process the command and return result
}
else // Not the end of the line
inBuff[index++] = c; // Save the character
inBuff[index] = '\0'; // Make next character a null
}
return ParseCommand ( inBuff ); // Process the command and return result
return false;
// return ParseCommand ( inBuff ); // Process the command and return result
}
@ -1797,6 +1804,10 @@ uint8_t reg69; // Ditto
Serial.println("Starting bpf calibration");
return true;
}
else
{
Serial.println("bpfCal only works in RX_SWEEP (RBW test) mode");
}
return false;
@ -3204,7 +3215,7 @@ int16_t tempBw = bw;
setting.BandscopeRBW10 = bw;
tempBw = rcvr.SetRBW ( bw, &delaytime );
tempBw = rcvr.SetRBW ( bw, &delaytime, &bpfIndex );
if ( tempBw != oldRBW )
{

76
data/index.html
View File

@ -206,7 +206,7 @@
</select>
<br />
<label class="setting-label">Level:</label>
<input class="value-input" type="number" id="setTrackGenPower" placeholder="setTrackGenPower" maxlength = "6" min="-60" max="20" value="0" />
<input class="value-input" type="number" id="setTrackGenPower" placeholder="setTrackGenPower" maxlength = "6" min="-60" max="10" value="0" />
dBm
</div>
<div class="setting" >
@ -242,6 +242,9 @@
<div class="setting" >
<label for="levelOffset" class="setting-label">Offset:</label>
<input class="value-display" type="text" disabled="1" id="levelOffset" size="1" value="10" />
dB
<label for="filterCal" class="setting-label">RBW Cal:</label>
<input class="value-display" type="text" disabled="1" id="filterCal" size="1" value="0" />
dB
</div>
<div class="setting" >
@ -356,6 +359,7 @@ var setAtten = document.getElementById('setAtten');
var setExtern = document.getElementById('setExtern');
var setActPower = document.getElementById('setActPower');
var levelOffset = document.getElementById('levelOffset');
var filterCal = document.getElementById('filterCal');
var setRefOut = document.getElementById('setRefOut');
var sweepPoints = document.getElementById('sweepPoints');
var sweepTime = document.getElementById('sweepTime');
@ -399,6 +403,7 @@ var oldSweepCenter = -1;
var oldSetRefOut = -2;
var oldSetRBW = -10;
var oldLevelOffset = 1000;
var oldFilterCal = 1000;
var oldAttenuation = 1000;
var oldExternalGain = 1000;
var oldDrive = -1;
@ -535,14 +540,24 @@ var chartSA = new CanvasJS.Chart("chartSA",
},
axisY2: [
{
title: "RSSI",
// title: "RSSI",
title:"",
tickLength: 0,
lineThickness:0,
margin:0,
titleFontSize: 24,
valueFormatString: " ",
minimum: 0,
maximum: 255
},
{
title: "Gain",
// title: "Gain",
title:"",
tickLength: 0,
lineThickness:0,
margin:0,
titleFontSize: 24,
valueFormatString: " ",
minimum: 0,
maximum: 50
}],
@ -555,14 +570,58 @@ var chartSA = new CanvasJS.Chart("chartSA",
//console.log(e);
if (typeof (e.dataSeries.visible) === "undefined" || e.dataSeries.visible) {
e.dataSeries.visible = false;
if (e.dataSeries.name == "RSSI") { // turn off the RSSI axis and ticks
chartSA.axisY2[0].options.title ="";
chartSA.axisY2[0].options.tickLength = 0;
chartSA.axisY2[0].options.lineThickness = 0;
chartSA.axisY2[0].options.margin = 0;
chartSA.axisY2[0].options.valueFormatString = " ";
// chartSA.axisY2[0].labelFormatter = function(e) { return ""; }
}
if (e.dataSeries.name == "gain") { // turn off the gain axis and ticks
chartSA.axisY2[1].options.title ="";
chartSA.axisY2[1].options.tickLength = 0;
chartSA.axisY2[1].options.lineThickness = 0;
chartSA.axisY2[1].options.margin = 0;
chartSA.axisY2[1].options.valueFormatString = " ";
// chartSA.axisY2[1].labelFormatter = function(e) { return ""; }
}
} else {
e.dataSeries.visible = true;
if (e.dataSeries.name == "RSSI") { // turn on the RSSI axis and ticks
chartSA.axisY2[0].options.title ="RSSI";
chartSA.axisY2[0].options.tickLength = 5;
chartSA.axisY2[0].options.lineThickness = 2;
chartSA.axisY2[0].options.margin = 2;
chartSA.axisY2[0].options.valueFormatString = "###";
// chartSA.axisY2[0].labelFormatter = function(e)
// {
// return CanvasJS.formatNumber(e.value);
// }
}
if (e.dataSeries.name == "gain") { // turn on the gain axis and ticks
chartSA.axisY2[1].options.title ="gain";
chartSA.axisY2[1].options.tickLength = 5;
chartSA.axisY2[1].options.lineThickness = 2;
chartSA.axisY2[1].options.margin = 2;
chartSA.axisY2[1].options.valueFormatString = "##";
// chartSA.axisY2[1].labelFormatter = function(e)
// {
// return CanvasJS.formatNumber(e.value);
// }
}
}
e.chart.render();
chartSA.render();
}
},
data: [
data: [
{
type: "line",
name: "dB",
@ -1018,7 +1077,7 @@ function handleSettings (settings)
setCenter.disabled = true;
setSpan.disabled = true;
setRBW.disabled = false;
setRefOut.disabled = true;
setRefOut.disabled = false;
setSpur.disabled = true;
setTrackGen.disabled = true;
setTGFreq.disabled = true;
@ -1036,7 +1095,7 @@ function handleSettings (settings)
setCenter.disabled = true;
setSpan.disabled = true;
setRBW.disabled = true;
setRefOut.disabled = true;
setRefOut.disabled = false;
setSpur.disabled = true;
setTrackGen.disabled = true;
setTGFreq.disabled = true;
@ -1105,6 +1164,7 @@ function handleSettings (settings)
levelOffset.value = settings.levelOffset;
filterCal.value = settings.filterCal;
// console.log("levelOffset=" + settings.levelOffset);
if (settings.start/1000 != oldSweepStart) {
@ -1315,6 +1375,8 @@ function handleChunkData (data)
var dataStart = data.StartIndex;
var b = parseInt(levelOffset.value) + parseInt(setAtten.value) - 120 - parseFloat(setExtern.value);
// If RX Sweep (test of rbw filters) then don't add the correction from calibration
if (setMode.value != 8) b = b + parseFloat(filterCal.value);
var a = 1/setAverage.value;

6
si4432.cpp
View File

@ -328,7 +328,7 @@ const char* unit[4] = { "RX", "TX", "TGIF", "TGLO" }; // For debugging
delay ( 1 ); // Slight pause
}
Serial.printf ( "Si4432 Reset failed - _cs = %i\n", _cs );
Serial.printf ( "%s Si4432 Reset failed - _cs = %i\n", unit[_type], _cs );
return false;
}
@ -599,10 +599,11 @@ void Si4432::SetOffset ( int32_t offset )
* and returns the actual value chosen as well as the required delay to allow the
* FIR filter in the SI4432 to settle (in microseconds) Delay time is longer for
* narrower bandwidths.
* The filter index is also returned.
* Filters flagged as DO_NOT_USE will not be chosen
*/
float Si4432::SetRBW ( float reqBandwidth10, unsigned long* delaytime_p ) // "reqBandwidth" in kHz * 10
float Si4432::SetRBW ( float reqBandwidth10, unsigned long* delaytime_p, uint16_t* filter_p ) // "reqBandwidth" in kHz * 10
{
int filter = _bpfCount-1; // Elements in the "bandpassFilters" array
@ -668,6 +669,7 @@ float Si4432::SetRBW ( float reqBandwidth10, unsigned long* delaytime_p ) // "re
_dt = _bandpassFilters[filter].settleTime;
*delaytime_p = _dt;
*filter_p = filter;
return _bw;
}

2
si4432.h
View File

@ -187,7 +187,7 @@ void SetOffset ( int32_t offset ); // Offset based on number of offset incre
void SetPowerReference ( int freq ); // Set the GPIO output for the LO
void SetDrive ( uint8_t level ); // Sets the drive level
float SetRBW ( float reqBandwidth10, unsigned long* delaytime_p ); // "reqBandwidth" in kHz * 10
float SetRBW ( float reqBandwidth10, unsigned long* delaytime_p, uint16_t* filter_p ); // "reqBandwidth" in kHz * 10
void SetPreampGain ( int gain ); // Sets preamp gain
int GetPreampGain (); // Get current gain register

21
simpleSA.ino
View File

@ -416,6 +416,7 @@ double dBadjust; // Sum of attenuation, external gain, calibration offset
uint16_t bpfCalibrate; // set true if a SI4432 bandpass filter calibration run is taking place
uint16_t bpfCount; // no of bandpass filters available
double bpfCalibrations[MAX_SI4432_FILTERS]; // temporary storage for calibration values
uint16_t bpfIndex; // Index for current rbw filter
/*
* Variables for offset frequency tuning (used in Bandscope mode)
@ -700,12 +701,14 @@ bool fsStatus = false; // True if SPIFFS loads ok
"RX SI4432 failed",
"to initialise", NULL, NULL );
bandwidth = rcvr.SetRBW ( setting.Bandwidth10, &delaytime ); // Set initial bandwidth and delaytime
bandwidth = rcvr.SetRBW ( setting.Bandwidth10, &delaytime, &bpfIndex ); // Set initial bandwidth, delaytime and filter
SetRX ( 0 ); // RX in receive, LO in transmit
rcvr.SetPreampGain ( setting.PreampGain );
bpfCount = rcvr.GetBandpassFilterCount(); // no of RBW filters available
ReadBpfCalibration(); // Get bandpass filter (RBW) calibrations
printBpfCal(); // and display the values
// If the tracking generator IF SI4432 is defined, then check to see if it is connected
@ -2132,3 +2135,19 @@ void printSPIFFS()
file = root.openNextFile(); // Move to the next file
}
}
/*
* Print out the bpf calibration values
*/
void printBpfCal()
{
Serial.println("Bandpass Filter Calibration values:\n");
for (int i = 0; i< bpfCount; i++)
{
Serial.printf("filter: %i, rbw10=%i , cal=%f \n", i, rcvr.GetBandpassFilter10(i), bpfCalibrations[i] );
}
}

9
simpleSA_wifi.cpp
View File

@ -37,6 +37,8 @@ extern unsigned long sweepMicros; // To report the scan time
extern uint16_t bpfCount; // Number of elements in the bandpassFilters array
extern double bpfCalibrations[MAX_SI4432_FILTERS]; // temporary storage for calibration values
extern uint16_t bpfIndex; // Index for current rbw filter
extern int updateSidebar; // Flag to indicate no of clients has changed
extern void ClearDisplay ();
extern void DisplayError ( uint8_t severity, const char *l1, const char *l2, const char *l3, const char *l4 );
@ -581,6 +583,7 @@ void onGetSweep ( AsyncWebServerRequest *request )
root["attenuation"] = setting.Attenuate;
root["extGain"] = setting.ExternalGain;
root["levelOffset"] = setting.LevelOffset;
root["filterCal"] = bpfCalibrations[bpfIndex];
root["setRBW"] = setting.Bandwidth10;
root["bandwidth"] = bandwidth;
root["RefOut"] = setting.ReferenceOut;
@ -627,6 +630,7 @@ void onGetSettings (AsyncWebServerRequest *request)
root["attenuation"] = setting.Attenuate;
root["extGain"] = setting.ExternalGain;
root["levelOffset"] = setting.LevelOffset;
root["filterCal"] = bpfCalibrations[bpfIndex];
root["setRBW"] = setting.Bandwidth10;
root["bandwidth"] = bandwidth;
root["RefOut"] = setting.ReferenceOut;
@ -682,6 +686,7 @@ static DynamicJsonDocument jsonDocument ( capacity ); // buffer for json data to
jsonDocument["attenuation"] = setting.Attenuate;
jsonDocument["extGain"] = setting.ExternalGain;
jsonDocument["levelOffset"] = setting.LevelOffset;
jsonDocument["filterCal"] = bpfCalibrations[bpfIndex];
jsonDocument["setRBW"] = setting.Bandwidth10;
jsonDocument["bandwidth"] = bandwidth;
jsonDocument["RefOut"] = setting.ReferenceOut;
@ -740,6 +745,7 @@ static DynamicJsonDocument jsonDocument ( capacity ); // buffer for json data to
jsonDocument["attenuation"] = setting.Attenuate;
jsonDocument["extGain"] = setting.ExternalGain;
jsonDocument["levelOffset"] = setting.LevelOffset;
jsonDocument["filterCal"] = bpfCalibrations[bpfIndex];
jsonDocument["setRBW"] = setting.Bandwidth10;
jsonDocument["bandwidth"] = bandwidth;
jsonDocument["RefOut"] = setting.ReferenceOut;
@ -796,6 +802,7 @@ static DynamicJsonDocument jsonDocument ( capacity ); // buffer for json data to
jsonDocument["attenuation"] = setting.Attenuate;
jsonDocument["extGain"] = setting.ExternalGain;
jsonDocument["levelOffset"] = 0;
jsonDocument["filterCal"] = bpfCalibrations[bpfIndex];
jsonDocument["setRBW"] = setting.Bandwidth10;
jsonDocument["bandwidth"] = bandwidth;
jsonDocument["RefOut"] = setting.ReferenceOut;
@ -852,6 +859,7 @@ static DynamicJsonDocument jsonDocument ( capacity ); // buffer for json data to
jsonDocument["attenuation"] = setting.Attenuate;
jsonDocument["extGain"] = setting.ExternalGain;
jsonDocument["levelOffset"] = setting.LevelOffset;
jsonDocument["filterCal"] = bpfCalibrations[bpfIndex];
jsonDocument["setRBW"] = setting.Bandwidth10;
jsonDocument["bandwidth"] = bandwidth;
jsonDocument["RefOut"] = setting.ReferenceOut;
@ -909,6 +917,7 @@ static DynamicJsonDocument jsonDocument ( capacity ); // buffer for json data to
jsonDocument["attenuation"] = setting.Attenuate;
jsonDocument["extGain"] = setting.ExternalGain;
jsonDocument["levelOffset"] = setting.LevelOffset;
jsonDocument["filterCal"] = bpfCalibrations[bpfIndex];
jsonDocument["setRBW"] = setting.Bandwidth10;
jsonDocument["bandwidth"] = bandwidth;
jsonDocument["RefOut"] = setting.ReferenceOut;