Keep the receiver on ?

RE: Keep the receiver on ?

RixtronixLAB — Thu, 12 Oct 2023 03:13:19 GMT

Hi Kenneth,

We found the code below, what do you suggest ?

Kind regards,

                case EVENT_RX_FAIL_GO_TO_SEARCH:
									  NRF_LOG_INFO("EVENT_RX_FAIL_GO_TO_SEARCH...\r\n");
								    NRF_LOG_INFO("RIXTRONIX EVENT_RX_FAIL_GO_TO_SEARCH...\r\n"); 
								      /*******set the time out to search the HRM,BSC,BPWR sensor Rixtronix LAB 6Feb22****************/
								    /******E:\nRF5_SDK_17.0.2_d674dde\components\softdevice\SoftDevice\headers\include\ant_interface.h LINE 457*******/
										err_code = sd_ant_channel_search_timeout_set(HRM_CHANNEL_NUM, 288);
										APP_ERROR_CHECK(err_code);
								    //increase the time out 20 30x2.5s = 75s Rixtronix LAB 6May22
										/******E:\nRF5_SDK_17.0.2_d674dde\components\softdevice\SoftDevice\headers\include\ant_interface.h LINE 457*******/
								     err_code = sd_ant_channel_search_timeout_set(BSC_CHANNEL_NUM, 288);
										APP_ERROR_CHECK(err_code);
								    //increase the time out 20 30x2.5s = 75s Rixtronix LAB 6May22
										/******E:\nRF5_SDK_17.0.2_d674dde\components\softdevice\SoftDevice\headers\include\ant_interface.h LINE 457*******/
										err_code = sd_ant_channel_search_timeout_set(BPWR_CHANNEL_NUM, 288);
										APP_ERROR_CHECK(err_code);
                    err_code = bsp_indication_set(BSP_INDICATE_SCANNING);

RE: Keep the receiver on ?

RixtronixLAB — Thu, 12 Oct 2023 00:21:25 GMT

Hi Kenneth,

Thanks for the reply,

Related with.....

"...............if multiple packets are lost in row............"

We saw this :

<info> nrf_sdh_ant: ANT Event 0x80 Channel 0x00 Message 0x2000807C Checksum 0x03

<info> nrf_sdh_ant: ANT_MESSAGE_ulForceAlign 0x84004E09

<info> nrf_sdh_ant: ANT_MESSAGE_ucSize 0x09

<info> nrf_sdh_ant: ANT_MESSAGE_aucFramedData 0x2000807D

<info> nrf_sdh_ant: ANT_MESSAGE_ucMesgID 0x4E

<info> nrf_sdh_ant: ANT_MESSAGE_aucMesgData 0x2000807E

<info> nrf_sdh_ant: ANT_MESSAGE_ucChannel 0x00

<info> nrf_sdh_ant: ANT_MESSAGE_ucSubID 0x00

<info> nrf_sdh_ant: ANT_MESSAGE_aucPayload 0x2000807F

<info> nrf_sdh_ant: ANT_MESSAGE_ucExtMesgBF 0x00

<info> nrf_sdh_ant: ANT_MESSAGE_aucExtData 0x20008088

<info> nrf_sdh_ant: ANT_MESSAGE_ucCheckSum 0x03

<info> ant_bsc: ant_bsc_disp_evt_handler

Is it there ?

Kind regards,

Rixtronix LAB

RE: Keep the receiver on ?

Kenneth — Tue, 10 Oct 2023 08:08:03 GMT

I don't remember the exact timing you can configure, but you can allways re-start scanning also if needed. In general you may find this application note from thisisant useful in terms of what types of scanning is possible:
https://www.thisisant.com/resources/an11-ant-channel-search-and-background-scanning-channel/

RE: Keep the receiver on ?

RixtronixLAB — Tue, 10 Oct 2023 02:55:56 GMT

Hi Kenneth,

Thanks for the reply,

"......drop back into search to search for the master (EVENT_RX_FAIL_GO_TO_SEARCH event). "

How can we make "search for the master" for above 900 seconds ?

Thank you,

Kind regards,

Rixtronix LAB

RE: Keep the receiver on ?

Kenneth — Mon, 09 Oct 2023 11:25:48 GMT

Hello,

The slave device will try to synchronize to the message rate by the master, if multiple packets are lost in row (multiple EVENT_RX_FAIL in a row), then at some point the slave will drop back into search to search for the master (EVENT_RX_FAIL_GO_TO_SEARCH event). The naming of the events may differ a bit depending on the softdevice release.

Kenneth