BladeRF: updated documentation

plugins/samplesink/bladerf1output/readme.md

@@ -42,9 +42,11 @@ Device start / stop button.
   - Red square icon: device is running and can be stopped
   - Magenta (or pink) square icon: an error occurred. In the case the device was accidentally disconnected you may click on the icon, plug back in and start again.
 
-<h3>2: Baseband sample rate</h3>
+<h3>2: Stream sample rate</h3>
 
-This is the baseband sample rate in kS/s before interpolation (4) to produce the final stream that is sent to the BladeRF device. Thus this is the device sample rate (6) divided by the interpolation factor (4).
+In host to device sample rate input mode (6A) this is the baseband I/Q sample rate in kS/s. This is the host to device sample rate (6) divided by the interpolation factor (7).
+
+In baseband sample rate input mode (6A) this is the host to device sample rate in kS/s. This is the baseband sample rate (6) multiplied by the software interpolation factor (7)
 
 Transmission latency depends essentially in the delay in the sample FIFO. The FIFO size is calculated as follows:
 

plugins/samplesink/bladerf2output/readme.md

@@ -24,9 +24,11 @@ Device start / stop button.
   - Red square icon: device is running and can be stopped
   - Magenta (or pink) square icon: an error occurred. In the case the device was accidentally disconnected you may click on the icon, plug back in and start again.
 
-<h3>2: Baseband sample rate</h3>
+<h3>2: Stream sample rate</h3>
 
-This is the baseband sample rate in kS/s before interpolation (4) to produce the final stream that is sent to the BladeRF device. Thus this is the device sample rate (6) divided by the interpolation factor (4).
+In host to device sample rate input mode (7A) this is the baseband I/Q sample rate in kS/s. This is the host to device sample rate (7) divided by the interpolation factor (8).
+
+In baseband sample rate input mode (7A) this is the host to device sample rate in kS/s. This is the baseband sample rate (7) multiplied by the software interpolation factor (8)
 
 Transmission latency depends essentially in the delay in the sample FIFO. The FIFO size is calculated as follows:
 
@@ -80,9 +82,18 @@ Use this toggle button to activate or deactivate the frequency translation
 
 Use these buttons to confirm ("OK") or dismiss ("Cancel") your changes.
 
-<h3>7: Device sample rate</h3>
+<h3>7A: Host to device sample rate / Baseband sample rate input toggle</h3>
 
-This is the BladeRF device DAC sample rate in S/s.
+Use this toggle button to switch the sample rate input next (7) between host to device sample rate and baseband sample rate input. The button shows the current mode:
+
+  - **SR**: host to device sample rate input mode. The baseband sample rate (2) is the host to device sample rate (7) divided by the interpolation factor (8).
+  - **BB**: baseband sample rate input mode. The host to device sample rate (2) is the baseband sample rate (7) multiplied by the interpolation factor (8).
+
+<h3>7: Sample rate</h3>
+
+This is the BladeRF device DAC sample rate sample rate or baseband sample rate in samples per second (S/s). The control (7A) is used to switch between the two input modes. The device to/from host stream sample rate is the same for the Rx and Tx systems.
+
+The limits are adjusted automatically. In baseband input mode the limits are driven by the interpolation factor (8). You may need to increase this interpolation factor to be able to reach lower values.
 
 Use the wheels to adjust the sample rate. Left click on a digit sets the cursor position at this digit. Right click on a digit sets all digits on the right to zero. This effectively floors value at the digit position. Wheels are moved with the mousewheel while pointing at the wheel or by selecting the wheel with the left mouse click and using the keyboard arrows. Pressing shift simultaneously moves digit by 5 and pressing control moves it by 2.
 

plugins/samplesource/bladerf1input/readme.md

@@ -38,7 +38,9 @@ Record baseband I/Q stream toggle button
 
 <h4>1.4: Stream sample rate</h4>
 
-Baseband I/Q sample rate in kS/s. This is the device sample rate (4) divided by the decimation factor (6).
+In device to host sample rate input mode (4A) this is the baseband I/Q sample rate in kS/s. This is the device to host sample rate (4) divided by the decimation factor (5).
+
+In baseband sample rate input mode (4A) this is the device to host sample rate in kS/s. This is the baseband sample rate (4) multiplied by the decimation factor (5)
 
 <h3>2: Auto correction options</h3>
 

plugins/samplesource/bladerf2input/readme.md

@@ -38,7 +38,9 @@ Record baseband I/Q stream toggle button
 
 <h4>1.4: Stream sample rate</h4>
 
-Baseband I/Q sample rate in kS/s. This is the device sample rate (4) divided by the decimation factor (6). 
+In device to host sample rate input mode (6A) this is the baseband I/Q sample rate in kS/s. This is the device to host sample rate (6) divided by the decimation factor (8).
+
+In baseband sample rate input mode (6A) this is the device to host sample rate in kS/s. This is the baseband sample rate (6) multiplied by the decimation factor (8)
 
 <h3>2: LO ppm correction</h3>
 
@@ -85,9 +87,18 @@ Use this toggle button to activate or deactivate the frequency translation
 
 Use these buttons to confirm ("OK") or dismiss ("Cancel") your changes.
 
-<h3>6: Device sample rate</h3>
+<h3>6A: Device sample rate / Baseband sample rate input toggle</h3>
 
-This is the BladeRF device ADC sample rate in S/s.
+Use this toggle button to switch the sample rate input next (6) between device sample rate and baseband sample rate input. The button shows the current mode:
+
+  - **SR**: device sample rate input mode. The baseband sample rate (1.4) is the device sample rate (6) divided by the decimation factor (8).
+  - **BB**: baseband sample rate input mode. The device sample rate (1.4) is the baseband sample rate (6) multiplied by the decimation factor (8).
+
+<h3>6: Sample rate</h3>
+
+This is the BladeRF device ADC sample rate or baseband sample rate in samples per second (S/s). The control (4A) is used to switch between the two input modes.
+
+The limits are adjusted automatically. In baseband input mode the limits are driven by the decimation factor (5). You may need to increase this decimation factor to be able to reach lower values.
 
 Use the wheels to adjust the sample rate. Left click on a digit sets the cursor position at this digit. Right click on a digit sets all digits on the right to zero. This effectively floors value at the digit position. Wheels are moved with the mousewheel while pointing at the wheel or by selecting the wheel with the left mouse click and using the keyboard arrows. Pressing shift simultaneously moves digit by 5 and pressing control moves it by 2.
 

sdrgui/readme.md

@@ -763,7 +763,7 @@ The spectrum display is controlled by the display control (4).
 
 <h4>8.1. SDRangel version</h4>
 
-Self explanatory
+This is the current tag or the latest tag followed by the number of commits since the latest tag followed by the git commit SHA1 (8 hex characters) preceded by 'g'. Ex: `v4.5.3-29-gf5f2349d`
 
 <h4>8.2. Qt version</h4>
 
@@ -779,4 +779,4 @@ Pretty print of the operating system in which SDRangel is running.
 
 <h4>8.5. Local date and time</h4>
 
-Local time timestamp according to system clock
+Local time timestamp according to system clock. Format: `yyyy-mm-dd HH:MM:ss TZ`