Close ANT HRM channel and save to SDcard ?

[RixtronixLAB]

Dear Members,

How can I stop ANT HRM channel temporarily, and save the heart rate value on to SDcard ?

My code at static void page0_data_log(ant_hrm_page0_data_t const * p_page_data),

err_code = sd_ant_channel_close(HRM_CHANNEL_NUM);
APP_ERROR_CHECK(err_code);
        
        log_hrm(p_page_data->computed_heart_rate); //log HRM value 8Dec21 Rixtronix LAB
        //open the channel
        err_code=sd_ant_channel_open(HRM_CHANNEL_NUM);
        APP_ERROR_CHECK(err_code);

Please revise me ?

Thanks

[Kenneth]

After issuing the sd_ant_channel_close() you need to wait for the event that indicate the channel is closed (this may take some time, since it depends for instance on the channel period).

Kenneth

[RixtronixLAB]

the event that indicate the channel is closed ,which event ? thanks...

code :

 
		err_code = sd_ant_channel_close(HRM_CHANNEL_NUM);
     APP_ERROR_CHECK(err_code);
		
		 if (err_code==NRF_SUCCESS )
			 {
				 
		      err_code = sd_ant_channel_unassign(HRM_CHANNEL_NUM); 
				 NRF_LOG_INFO("WRITE HRM TO SDcard Page 0...\r\n");
		
				 
			 }

Please correct me the sequence and where should I put that sequence of closing the channel, write to SDcard and reopen again ?

Thanks

[Kenneth]

You write system reset, the only way the chip will reset is if power is removed, pin reset is pressed or NVIC_SystemReset() is called. I believe the case here is that NVIC_SystemReset() is called, and likely from the app_error_fault_handler(), you should build with DEBUG to find the exact cause.

Kenneth

[RixtronixLAB]

Ok, I will try build and use DEBUG, anyway,

I never got these breakpoints  :

When it's connected on ANT HRM, it keeps running never stop on that breakpoint ?

Any ideas ?

Thanks

[RixtronixLAB]

Hi Kenneth,

When I put DEBUG,

I got this :

                                                                             

nfo> app: Err_code libuarte_init libuarte1 0
                                 

rror> app: SOFTDEVICE: ASSERTION FAILED

What's the cause of "SOFTDEVICE: ASSERTION FAILED" ?

How can we trace it ?

Thanks
          

[RixtronixLAB]

there are two ant_evt_handler I can see,
one in main.c and the other one is in ant_state_indicator

in main :
static void ant_evt_handler(ant_evt_t * p_ant_evt, void * p_context)
{
switch (p_ant_evt->event)
{
case EVENT_RX_FAIL_GO_TO_SEARCH:
/* Reset speed and cadence values */
memset(&m_speed_calc_data, 0, sizeof(m_speed_calc_data));
memset(&m_cadence_calc_data, 0, sizeof(m_cadence_calc_data));
break;

default:
// No implementation needed
break;
}
}

in ant_state_indicator.c
static void ant_evt_handler(ant_evt_t * p_ant_evt, void * p_context)
{
ret_code_t err_code = NRF_SUCCESS;

if (m_channel != p_ant_evt->channel)
{
return;
}

switch (m_channel_type)
{
case CHANNEL_TYPE_SLAVE:
/* fall through */
case CHANNEL_TYPE_SLAVE_RX_ONLY:
switch (p_ant_evt->event)
{
case EVENT_RX:
NRF_LOG_INFO("EVENT_RX...\r\n");
err_code = bsp_indication_set(BSP_INDICATE_CONNECTED);

nrf_pwr_mgmt_feed(); //Function for indicating activity.
break;

case EVENT_RX_FAIL:
NRF_LOG_INFO("EVENT_RX_FAIL...\r\n");
NRF_LOG_INFO("RIXTRONIX EVENT_RX_FAIL...\r\n");
err_code = bsp_indication_set(BSP_INDICATE_RCV_ERROR);

break;

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");
err_code = bsp_indication_set(BSP_INDICATE_SCANNING);
break;

case EVENT_CHANNEL_CLOSED:
NRF_LOG_INFO("EVENT_CHANNEL_CLOSED...\r\n");
nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_GOTO_SYSOFF); //default
//nrf_pwr_mgmt_shutdown(NRF_PWR_MGMT_SHUTDOWN_CONTINUE);
nrf_pwr_mgmt_feed(); //Function for indicating activity.


break;

case EVENT_RX_SEARCH_TIMEOUT:
//Rixtronix LAB
//8 Sept 2021,
//on search timeout, and idle, make device on if there is a signal from sensor ?
NRF_LOG_INFO("EVENT_RX_SEARCH_TIMEOUT...\r\n");
err_code = bsp_indication_set(BSP_INDICATE_IDLE);//default
//err_code = bsp_indication_set(BSP_INDICATE_SCANNING);
nrf_pwr_mgmt_feed(); //Function for indicating activity. default

break;
}
break;
}
APP_ERROR_CHECK(err_code);
}

in softdevice_setup function at main/**@brief BLE + ANT stack initialization.
*
* @details Initializes the SoftDevice and the stack event interrupt.
*/
static void softdevice_setup(void)
{
ret_code_t err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);
NRF_LOG_INFO("softdevice_setup\r\n");
ASSERT(nrf_sdh_is_enabled());

#ifdef BLE_STACK_SUPPORT_REQD
ble_stack_init();
#endif

err_code = nrf_sdh_ant_enable();
APP_ERROR_CHECK(err_code);

// Register a handler for ANT events.
NRF_SDH_ANT_OBSERVER(m_ant_observer, APP_ANT_OBSERVER_PRIO, ant_evt_handler, NULL);


}

ant_evt_handler the one in main.c is being used,

does this naming ant_evt_handler cause the crash ?

Thanks

[RixtronixLAB]

I got this error

<error> app: ERROR 0 [NRF_SUCCESS] at ..\..\..\..\..\..\..\..\components\librari

\libuarte\nrf_libuarte_async.c:230
                                           

 at: 0x000462F7

on main loop

at GPS_process function