Regarding PA-LNA in mesh sdk

RE: Regarding PA-LNA in mesh sdk

Raghu Vamsi — Tue, 26 Mar 2019 16:29:53 GMT

Thanks for the suggestion, i tried it and it's working

Thank you

RE: Regarding PA-LNA in mesh sdk

Hung Bui — Mon, 25 Mar 2019 16:14:55 GMT

Hi,

I'm not sure why PALNA wouldn't work on channel 4&5, but can you try change the saadc channel to use PPI channel 4&5&6 instead ?

RE: Regarding PA-LNA in mesh sdk

Raghu Vamsi — Mon, 25 Mar 2019 06:03:34 GMT

Hi,

Thank you for the help in pa_lna enabling issue, now it is working.

Right now i initialised saadc in my application which is getting conflicted with pa_lna channels as in the mesh pa_lna example

.ppi_ch_id_set = 0,
.ppi_ch_id_clr = 1,

if i am using same channel id's in both the stacks,then my pa_lna is working

now my problem is for saadc initalization for my board application i am using three channels 0,1,2 for PPI initializatian

which are getting conflicted with my pa_lna channels so according my board application i changed the pa_lna channel id to

.ppi_ch_id_set = 4,//0,
.ppi_ch_id_clr = 5,//1,

in both stack then my saadc started working but pa_lna not working properly.

In our coustom board we physicaly attached adc(0,1,2) pins to our sensors is it possible to change these adc pins

please help,

thank you,

RE: Regarding PA-LNA in mesh sdk

Hung Bui — Tue, 19 Mar 2019 09:09:13 GMT

You can follow this: https://devzone.nordicsemi.com/f/nordic-q-a/25886/70-mesh-assert-at-0x00023680

RE: Regarding PA-LNA in mesh sdk

SAIF — Tue, 19 Mar 2019 06:14:25 GMT

Hi,

can you please suggest me how to use addr2line.exe syntax for checking the error line code.

RE: Regarding PA-LNA in mesh sdk

Hung Bui — Mon, 18 Mar 2019 16:50:54 GMT

You were accessing RAM occupied by the softdevice. 163760 = 0x27FB0, please use addr2line.exe to find which line of code caused the issue.

RE: Regarding PA-LNA in mesh sdk

SAIF — Mon, 18 Mar 2019 14:47:10 GMT

Hi,

thank you for your reply....

now as i am using for both mesh and ble stack and it is working.

thank you

now i have added my complete application code and now it is showing me this error

app_error_weak.c, 100, Application memory access: 163760:1..........

could you please help me regarding this issue.

Thank you....

RE: Regarding PA-LNA in mesh sdk

Hung Bui — Mon, 18 Mar 2019 12:52:46 GMT

Yes they are separate stacks so you need to call both APIs.

When you receive Mesh error, please try to debug it. You can use add2line to get which line of code throwing the error.

But first make sure mesh & PA/LNA work. Could you check if the pins are actually toggled ?

RE: Regarding PA-LNA in mesh sdk

SAIF — Mon, 18 Mar 2019 11:40:27 GMT

Hi,

Thanks for your quick reply but i have following issue

we successfully configured and tested this external PA with normal SDK but when i tried in any example of MESH SDK with our customized configured pins it is not working.

Secondly as u have mentioned that there are two stacks .so should i use two calls separately for enabling PA/LNA

i.e., mesh_pa_lna_gpiote_enable(&m_pa_lna_params); //FOR MESH

and sd_ble_opt_set(); // for BLE stack.

if i tried two calls then it is showing MESH ERROR

Also u mentioned to use advertiser_packet_send() this call,but i am unable to change manufacture data .so i want to change dynamically advertising data so please suggest how should i use this calls.

Thank you.

RE: Regarding PA-LNA in mesh sdk

Hung Bui — Mon, 18 Mar 2019 10:13:13 GMT

Hi,

Please clarify what you mean by "RSSI showing more" does that mean weaker signal or stronger signal ? Note that RSSI is measure in negative, and the higher (closer to 0) the better signal.

Please be aware that when you are using mesh , there are 2 stacks the Mesh stack and the normal BLE Softdevice stack. They are independent.

You need to setup PA/LNA for both of them.

Please try testing one by one to make sure they work as intended before mixing them in one application.

First please test PA/LNA with normal mesh operation and let me know if it works.

Second, test the mesh_adv_start(), this function uses the softdevice so you need to call sd_ble_opt_set() to configure PA/LNA.

I'm not sure why you want to do connectable advertising if you just want to advertise your manufacturing data. If you don't plan to get the device be connected (as a proxy node) you can just advertise using advertiser_packet_send() which doesn't use the softdevice. Please refer to the beacon example in our mesh SDK.

If you see issue in the test, please check the PA/LNA pins using a logic analyzer and check if they are toggled or not.

RE: Regarding PA-LNA in mesh sdk

SAIF — Mon, 18 Mar 2019 08:00:56 GMT

Hello,

Here we are using nRF52832 with skyworks66112 for pa_lna for ble module on our board.

So related to our board we are using 23 pin for PA and 20 pin for LNA as shown below

and by using this pins of our board we have implemented for central and peripheral profiles of nrf sdk by using this call

static ble_opt_t pa_lna_opts = {
        .common_opt = {
            .pa_lna = {

                .pa_cfg = {
                    .enable = 1,
                    .active_high = 1,
                    .gpio_pin = APP_PA_PIN
                },


                .lna_cfg = {
                    .enable = 1,
                    .active_high = 1,
                    .gpio_pin = APP_LNA_PIN
                },

                .ppi_ch_id_set = APP_AMP_PPI_CH_ID_SET,
                .ppi_ch_id_clr = APP_AMP_PPI_CH_ID_CLR,
                .gpiote_ch_id = APP_AMP_GPIOTE_CH_ID
            }
        }
    };
    NRF_GPIO->DIRSET |= (1 << APP_PA_PIN) | (1 << APP_LNA_PIN) ;
    err_code = sd_ble_opt_set(BLE_COMMON_OPT_PA_LNA, &pa_lna_opts);
    APP_ERROR_CHECK(err_code);

and it used to work fine but whereas coming to sdk mesh pa and lna pins are 24 and 25 for sdk mesh we are using this

mesh_pa_lna_gpiote_enable(&m_pa_lna_params);

for mesh pa_lna it is not working

And about advertising what i meant to say is actually we are advertising our manufacturing data through advertising.Here we have faced a problem is for advertising, the RSSI is showing more so advertising packets is unable to receive to near by device also.

if( network_flag >= 1)
     {
       mesh_adv_stop();
       mesh_adv_data_set(PROXY_UUID_SERVICE1, buff_data[y++], sizeof(aqua_data));
       mesh_adv_start();

network_flag = 0;

}

the above block of statement is used for advertising and this is happening for every 500msec ,as the flag is set in timer handler for every 500ms and this call is been called in while loop.....

buff_data[0th location] ,device own data will be advertise

and in the remaining locations data received by near by devices has to be advertised and for receiving we are using this callback

void rx_cb(const nrf_mesh_adv_packet_rx_data_t * p_rx_data);

but because of more RSSI ,if the device is little far from one another it is unable to receive advertising packets

If i keep the devices very near to each other ,every device advertise all devices data for every 500msec interval.

here buffer size is 20 bytes so each device advertise 20 bytes of data for 500ms.

so i hope i have given u the required details regarding my problem and i wish i could solve this issue with your help.

thank you.

RE: Regarding PA-LNA in mesh sdk

Hung Bui — Fri, 15 Mar 2019 13:43:04 GMT

Hi,

Please explain if you have any external hardware PA and LNA on your board ?

Did you modify anything to enable PA LNA in your code ?

Could you explain this: " when ever the data is advertising it is showing more RSSI and when ever command/data has been send from client to specific server then suddenly the RSSI shows less ." . Data is always sending over advertising channel in Mesh. And there isn't an empty data packet, there will always some data in a mesh packet.