RE: Saving data to SD card every 5 sec (using app_timer)

Jdam — Fri, 16 Feb 2018 10:22:23 GMT

It helps, i add

// Init for LFCLK
static void lfclk_request(void)
{
    ret_code_t err_code = nrf_drv_clock_init();
    APP_ERROR_CHECK(err_code);
    nrf_drv_clock_lfclk_request(NULL);

    if(nrf_drv_clock_lfclk_is_running()){
		NRF_LOG_INFO("LFCLK: ON \r\n ");
	}
}

and in main

	// Request LF clock.
	    lfclk_request();

later i must add this in sdk_config.h file

// </e>

// <e> CLOCK_ENABLED - nrf_drv_clock - CLOCK peripheral driver
//==========================================================
#ifndef CLOCK_ENABLED
#define CLOCK_ENABLED 1
#endif
#if  CLOCK_ENABLED
// <o> CLOCK_CONFIG_XTAL_FREQ  - HF XTAL Frequency

// <0=> Default (64 MHz)

#ifndef CLOCK_CONFIG_XTAL_FREQ
#define CLOCK_CONFIG_XTAL_FREQ 0
#endif

// <o> CLOCK_CONFIG_LF_SRC  - LF Clock Source

// <0=> RC
// <1=> XTAL
// <2=> Synth

#ifndef CLOCK_CONFIG_LF_SRC
#define CLOCK_CONFIG_LF_SRC 1
#endif

// <o> CLOCK_CONFIG_IRQ_PRIORITY  - Interrupt priority


// <i> Priorities 0,2 (nRF51) and 0,1,4,5 (nRF52) are reserved for SoftDevice
// <0=> 0 (highest)
// <1=> 1
// <2=> 2
// <3=> 3
// <4=> 4
// <5=> 5
// <6=> 6
// <7=> 7

#ifndef CLOCK_CONFIG_IRQ_PRIORITY
#define CLOCK_CONFIG_IRQ_PRIORITY 7
#endif

// <e> CLOCK_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef CLOCK_CONFIG_LOG_ENABLED
#define CLOCK_CONFIG_LOG_ENABLED 1
#endif
#if  CLOCK_CONFIG_LOG_ENABLED
// <o> CLOCK_CONFIG_LOG_LEVEL  - Default Severity level

// <0=> Off
// <1=> Error
// <2=> Warning
// <3=> Info
// <4=> Debug

#ifndef CLOCK_CONFIG_LOG_LEVEL
#define CLOCK_CONFIG_LOG_LEVEL 3
#endif

// <o> CLOCK_CONFIG_INFO_COLOR  - ANSI escape code prefix.

// <0=> Default
// <1=> Black
// <2=> Red
// <3=> Green
// <4=> Yellow
// <5=> Blue
// <6=> Magenta
// <7=> Cyan
// <8=> White

#ifndef CLOCK_CONFIG_INFO_COLOR
#define CLOCK_CONFIG_INFO_COLOR 0
#endif

// <o> CLOCK_CONFIG_DEBUG_COLOR  - ANSI escape code prefix.

// <0=> Default
// <1=> Black
// <2=> Red
// <3=> Green
// <4=> Yellow
// <5=> Blue
// <6=> Magenta
// <7=> Cyan
// <8=> White

#ifndef CLOCK_CONFIG_DEBUG_COLOR
#define CLOCK_CONFIG_DEBUG_COLOR 0
#endif

#endif //CLOCK_CONFIG_LOG_ENABLED
// </e>

#endif //CLOCK_ENABLED

but when i compile it, something stop the program and this is the finall log

Process: JLinkGDBServer
APP:INFO:
FATFS.

CLOCK:INFO:Function: nrf_drv_clock_init, error code: NRF_SUCCESS.
APP:INFO:
 Timer_INIT.

APP:INFO:
 Init and create timer.

APP:INFO:
 Timer_sd_start.

APP:INFO:Timer was successfully started. 
APP:INFO:
 Timer_SD_Handler.

APP:INFO:
 DO IT :0 

APP:INFO:Initializing disk 0 (SDC)...

and when i check SD card nothing is save on it.
Thanks for help, but now i need to solve other problem.

RE: Saving data to SD card every 5 sec (using app_timer)

Håkon Alseth — Fri, 16 Feb 2018 08:15:51 GMT

Hi,

app_timer does not start up the LFCLK source. Try starting up the LFCLK, then start the app_timer instance.

Cheers,

Håkon