Undefined symbol nrf_drv_adc_sample_convert

[james tech]

I am getting following errors when compiling source code in Keil-5. Any one suggest me what i am missing to define symbol?

linking... ._build\nrf51422_xxac.axf: Error: L6218E: Undefined symbol nrf_drv_adc_sample_convert (referred from main.o). Not enough information to list image symbols.

[Sigurd]

Then you need to add the ADC section to the sdk_config.h that the pin_change_int uses.

Just copy paste this section in to the sdk_config.h you are using now:

//==========================================================
// <e> ADC_ENABLED - nrf_drv_adc - Driver for ADC peripheral (nRF51)
//==========================================================
#ifndef ADC_ENABLED
#define ADC_ENABLED 1
#endif
#if  ADC_ENABLED
// <o> ADC_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 

#ifndef ADC_CONFIG_IRQ_PRIORITY
#define ADC_CONFIG_IRQ_PRIORITY 3
#endif

// <e> ADC_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef ADC_CONFIG_LOG_ENABLED
#define ADC_CONFIG_LOG_ENABLED 0
#endif
#if  ADC_CONFIG_LOG_ENABLED
// <o> ADC_CONFIG_LOG_LEVEL  - Default Severity level
 
// <0=> Off 
// <1=> Error 
// <2=> Warning 
// <3=> Info 
// <4=> Debug 

#ifndef ADC_CONFIG_LOG_LEVEL
#define ADC_CONFIG_LOG_LEVEL 3
#endif

// <o> ADC_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 ADC_CONFIG_INFO_COLOR
#define ADC_CONFIG_INFO_COLOR 0
#endif

// <o> ADC_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 ADC_CONFIG_DEBUG_COLOR
#define ADC_CONFIG_DEBUG_COLOR 0
#endif

#endif //ADC_CONFIG_LOG_ENABLED
// </e>

#endif //ADC_ENABLED
// </e>

[james tech]

thank you man thid worked well