DW1000 User Manual formatting issues

Wireless Connectivity Ultra-Wideband
1

Hi,

I am attempting to write a utility to calibrate the crystal oscillator trim value for a custom board following Section 8.1.1 of the DW1000 User Guide. I’ve noticed the transmitter configuration steps appear to be formatted incorrectly. This is in dw1000_user_manual_2.13.pdf

Does anyone have a version of the user manual where the steps here are formatted correctly? I can probably interpret it, but want to make sure I am reading it correctly.

Thanks
[hr]
To be more specific, step 1 simply says:

“1. Sub-Register 0x28:00 – RF_CONF”

I’m not sure what to do here. Also, Step 9 appears to be split on two lines, and I think Step 10 is supposed to be the “Enable CW mode” step.

2

An older version (2.07) of the manual says:
"Transmitter Configuration Procedure:

  1. Write 0x0009A000 to
  2. Sub-Register 0x28:00 – RF_CONF"

It looks like someone decided to fix the formatting error by deleting line 1 rather than combining 1 and 2 into a single line.

The rest of the steps look the same (including the same extra new line error on lines 9 & 10) and worked for me.

3

Hi Andy, Lincoln,

line 1 of the Transmitter Configuration Procedure in the UM section 8.1.1 should be:

  1.  Write 0x0009A000 to Sub-Register 0x28:00 – RF_CONF

While line 9&10 should be merged and would become:
9. Write 0x005FFF00 to Sub-Register 0x28:00 – RF_CONF

This will be corrected in our next release of the UM manual

Additional information can be found in our API , example ex_04a_cont_wave. Crystal Trim is also described in Production Application Note APS012 section 3.3.1 Crystal trim optimization

/Leo

4

Great, thank you!

5

Hello,
what is sub register in line 4 of Transmitter Configuration Procedure (8.1.1 Calibration Method)? the Register file is 0X1E but the sub register is unknown.
line 4 of Transmitter Configuration Procedure:
4. Write an appropriate value to Register file: 0x1E – Transmit Power Control.

6

Hi
Therr is no subregister. The register is 4 octets. So the values given in table 19&20 could be used.
For more detailed information see aps023 part 1 attached

APS023_Part 1_Transmit_Power_Calibration_&_Management.pdf (874.8 KB)
Regards
leo

7

Hi Leo,
Thank you.
Best Regards.

8

Hi Leo,
If I’m not mistaken this is not corrected in the current version of the user manual. The current version has a defective step 1 and 9.

I also wonder if the statement in step 2 is correct: Write 0x00000000 to Sub-Register 0x36:04 – PMSC_CTRL1 . Since this clears the reserved bit 24 and the manual states that the reserved bits should be left at their reset states, I am afraid that this will impede DW1000 functionality. Can you confirm whether bit 24 should be cleared, or not?

Thanks in advance!
Dries

9

Hi Dries
We havent released the latest UM yet.
The fix will be in version 2.19, hopefully released soon
Regards & Stay safe
Leo