CC1311P3: wMBUS T-mode configuration

Hi,

I would recommend you to generate settings for CC1312R and copy them.

Cheers,

Marie H

Hi MM,

There are a few steps you need to follow to get this working in SmartRF Studio 7 for the CC1311x3 devices.

I would recommend looking at my reply in the following thread for manually adding PHYs to SmartRF Studio 7: https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/1448869/cc1314r10-1-mbps-gfsk-configuration/5570307#5570307

1. Copy the folder \rf_patch_mce_wmbus_ctmode\ from ...\config\firmware\patches\cc13x2_cc26x2\ to ...\config\firmware\patches\cc13x1_cc26x1\ 
2. The preliminary wM-Bus T-Mode PHY settings seem to already be in the CC1311P3 settings. The testcase name is TC210. However, you will still need to modify some .xml files to use it:
   1. Copy the following lines from ...\config\xml\cc1312r\cmd_settings\categories.xml to ...\config\xml\cc1311p3\cmd_settings\categories.xml:
      

            <!-- PHY: WMBUS T-Mode, 100 kbps, 2-GFSK, 235 kHz RX Bandwidth -->
            <Setting>setting_tc210.xml</Setting>

   2. In ...\config\xml\cc1311p3\cmd_settings\setting_tc210.xml modify the RF_MODE_AUTO section to the following: 

        <!-- RF core patch configuration -->
        <Patch>
          <Define>RF_MODE_AUTO</Define>
          <Cpe>rf_patch_cpe_prop</Cpe>
          <Mce>rf_patch_mce_wmbus_ctmode</Mce>
          <Rfe/>
        </Patch>

   3. The above should work for the standard +14 dBm output. However, to enable +20 dBm operation, the following lines need to be added to ...\config\xml\cc1311p3\cmd_settings\setting_tc210.xml directly underneath the "pRegOverride" </OverrideField> delimiter (and right above the </Command> delimiter that is above the "CMD_FS" section): 

          <Field name="pRegOverrideTxStd">0</Field>
          <OverrideField name="pRegOverrideTxStd">
            <!-- Override blocks to be concatenated into an override list for use with this command -->
            <Block>override_txstd_placeholder.xml</Block>
            <Block>override_phy_tx_pa_ramp_genfsk_std.xml</Block>
            <!-- override block with dcdc settings must be appended via txPower table -->
          </OverrideField>
          <Field name="pRegOverrideTx20">0</Field>
          <OverrideField name="pRegOverrideTx20">
            <!-- Override blocks to be concatenated into an override list for use with this command -->
            <Block>override_tx20_placeholder.xml</Block>
            <Block>override_phy_tx_pa_ramp_genfsk_hpa.xml</Block>
            <!-- override block with dcdc settings must be appended via txPower table -->
          </OverrideField>

       
3. I did a sanity check using a LAUNCHXL-CC1312R and LP-CC1311P3 and successfully achieved a link (successful Tx and Rx operation). We cannot guarantee all of the settings are optimised for the CC1311x3 as full characterisation for this PHY has not been performed (hence not being added to SmartRF Studio 7), but we would expect operation to be successful.

You can then export the settings for use in your CCS project.

Regards,

Zack