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IRQ Execution in nRF51

Hello

I am using Seggar Embedded Studio for ARM V3.4 and nRF_SDK 12.3.0.

I am using nRF51 DK

I am trying to understand interrupts and interrupt handlers.

The interrupt request for Watchdog timer (i.e. void WDT_IRQHandler(void)) is not getting executed. The control is not going to WDT_IRQHandler.

I did the following attempts to verify if the control was going to WDT_IRQHandler()

1>I tried to switch on the LED

2>I tried to switch off the LED

3>Only a printf() statement inside WDT_IRQHandler() (in debug mode)

The above attempts did not work.

I have defined the following Preprocessor Definitions:-

NO_VTOR_CONFIG

BLE_STACK_SUPPORT_REQD

NRF51422

BOARD_PCA10028

SWI_DISABLE0

NRF51

I have attached main.c file and sdk_config.h files. Please let me know how can I achieve it.

Fullscreen 6761.main_txt.txt Download

/* Copyright (c) 2014 Nordic Semiconductor. All Rights Reserved.
 *
 * The information contained herein is property of Nordic Semiconductor ASA.
 * Terms and conditions of usage are described in detail in NORDIC
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 *
 * Licensees are granted free, non-transferable use of the information. NO
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 * the file.
 *
 */

/* This example shows functionality of the Watchdog. The watchdog will reset the IC every 3 seconds if
 * it is not reloaded by pressing Button 1. LED 2 will blink during startup, which indicates that the 
 * watchdog has restarted the IC.
 */

#include <stdbool.h>
#include "nrf.h"
#include "nrf_drv_gpiote.h"
#include "app_error.h"
#include "boards.h"
#include "nrf_delay.h"

#define DELAY 100000															
#define NR_OF_STARTUP_BLINKS 10	

#define PIN_IN BSP_BUTTON_0
#define PIN_OUT BSP_LED_0
#define PIN_WDT BSP_LED_1
#define PIN_WDT_IRQ_HANDLER BSP_LED_2


void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
    nrf_drv_gpiote_out_toggle(PIN_OUT);
		NRF_WDT->RR[0] = WDT_RR_RR_Reload;  //Reload watchdog register 0
}

void WDT_IRQHandler(void)
{
	nrf_drv_gpiote_out_toggle(PIN_WDT_IRQ_HANDLER);     //The WDT interrupt handler will have around 2 32kHz clock cycles to execute before reset, so you can not actully see this LED blink with your eye.
        printf("I M in IRQ\n");
}

/**
 * @brief Function for configuring: PIN_IN pin for input, PIN_OUT and PIN_WDT pin for output, 
 * and configures GPIOTE to give an interrupt on pin change.
 */
static void gpio_init(void)
{
    ret_code_t err_code;

    err_code = nrf_drv_gpiote_init();
    APP_ERROR_CHECK(err_code);
    
    nrf_drv_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(false);

    err_code = nrf_drv_gpiote_out_init(PIN_OUT, &out_config);
    APP_ERROR_CHECK(err_code);
	
	  err_code = nrf_drv_gpiote_out_init(PIN_WDT, &out_config);
    APP_ERROR_CHECK(err_code);
	
		err_code = nrf_drv_gpiote_out_init(PIN_WDT_IRQ_HANDLER, &out_config);
    APP_ERROR_CHECK(err_code);

    nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(true);
    in_config.pull = NRF_GPIO_PIN_PULLUP;

    err_code = nrf_drv_gpiote_in_init(PIN_IN, &in_config, in_pin_handler);
    APP_ERROR_CHECK(err_code);

    nrf_drv_gpiote_in_event_enable(PIN_IN, true);
}


void wdt_init(void)
{
	NRF_WDT->CONFIG = (WDT_CONFIG_HALT_Pause << WDT_CONFIG_HALT_Pos) | ( WDT_CONFIG_SLEEP_Run << WDT_CONFIG_SLEEP_Pos);   //Configure Watchdog. a) Pause watchdog while the CPU is halted by the debugger.  b) Keep the watchdog running while the CPU is sleeping.
	NRF_WDT->CRV = 3*32768;             //ca 3 sek. timout
	NRF_WDT->RREN |= WDT_RREN_RR0_Msk;  //Enable reload register 0
	
	// Enable WDT interrupt:
  NVIC_EnableIRQ(WDT_IRQn);
  NRF_WDT->INTENSET = WDT_INTENSET_TIMEOUT_Msk;	
	
	NRF_WDT->TASKS_START = 1;           //Start the Watchdog timer
}


/**
 * @brief Function for application main entry.
 */
int main(void)
{
	gpio_init();

	//BLINK LED 2 during startup					
	for(int i=0;i<NR_OF_STARTUP_BLINKS;i++)					
	{
		nrf_drv_gpiote_out_toggle(PIN_WDT);
		nrf_delay_us(DELAY);
	}

	wdt_init();     //Initialize watchdog

    while (true)
    {
			__WFE();
			__SEV();
			__WFE();
    }
}

Fullscreen 7127.sdk_config_txt.txt Download


#ifndef SDK_CONFIG_H
#define SDK_CONFIG_H
// <<< Use Configuration Wizard in Context Menu >>>\n
#ifdef USE_APP_CONFIG
#include "app_config.h"
#endif
// <h> nRF_Drivers 

//==========================================================
// <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) 
// <255=> Default (16 MHz) 
// <0=> 32 MHz 

#ifndef CLOCK_CONFIG_XTAL_FREQ
#define CLOCK_CONFIG_XTAL_FREQ 255
#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 

#ifndef CLOCK_CONFIG_IRQ_PRIORITY
#define CLOCK_CONFIG_IRQ_PRIORITY 3
#endif

// <e> CLOCK_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef CLOCK_CONFIG_LOG_ENABLED
#define CLOCK_CONFIG_LOG_ENABLED 0
#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
// </e>


// <e> WDT_ENABLED - nrf_drv_wdt - WDT peripheral driver
//==========================================================
#ifndef WDT_ENABLED
#define WDT_ENABLED 1
#endif
#if  WDT_ENABLED
// <o> WDT_CONFIG_BEHAVIOUR  - WDT behavior in CPU SLEEP or HALT mode
 
// <1=> Run in SLEEP, Pause in HALT 
// <8=> Pause in SLEEP, Run in HALT 
// <9=> Run in SLEEP and HALT 
// <0=> Pause in SLEEP and HALT 

#ifndef WDT_CONFIG_BEHAVIOUR
#define WDT_CONFIG_BEHAVIOUR 1
#endif

// <o> WDT_CONFIG_RELOAD_VALUE - Reload value  <15-4294967295> 


#ifndef WDT_CONFIG_RELOAD_VALUE
#define WDT_CONFIG_RELOAD_VALUE 2000
#endif

// <o> WDT_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 WDT_CONFIG_IRQ_PRIORITY
#define WDT_CONFIG_IRQ_PRIORITY 3
#endif

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

#ifndef WDT_CONFIG_LOG_LEVEL
#define WDT_CONFIG_LOG_LEVEL 3
#endif

// <o> WDT_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 WDT_CONFIG_INFO_COLOR
#define WDT_CONFIG_INFO_COLOR 0
#endif

// <o> WDT_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 WDT_CONFIG_DEBUG_COLOR
#define WDT_CONFIG_DEBUG_COLOR 0
#endif

#endif //WDT_CONFIG_LOG_ENABLED
// </e>

#endif //WDT_ENABLED
// </e>

// <e> APP_TIMER_ENABLED - app_timer - Application timer functionality
//==========================================================
#ifndef APP_TIMER_ENABLED
#define APP_TIMER_ENABLED 1
#endif
#if  APP_TIMER_ENABLED
// <q> APP_TIMER_WITH_PROFILER  - Enable app_timer profiling
 

#ifndef APP_TIMER_WITH_PROFILER
#define APP_TIMER_WITH_PROFILER 0
#endif

// <q> APP_TIMER_KEEPS_RTC_ACTIVE  - Enable RTC always on
 

// <i> If option is enabled RTC is kept running even if there is no active timers.
// <i> This option can be used when app_timer is used for timestamping.

#ifndef APP_TIMER_KEEPS_RTC_ACTIVE
#define APP_TIMER_KEEPS_RTC_ACTIVE 0
#endif

#endif //APP_TIMER_ENABLED
// </e>





//==========================================================
// <e> GPIOTE_ENABLED - nrf_drv_gpiote - GPIOTE peripheral driver
//==========================================================
#ifndef GPIOTE_ENABLED
#define GPIOTE_ENABLED 1
#endif
#if  GPIOTE_ENABLED
// <o> GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS - Number of lower power input pins 
#ifndef GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS
#define GPIOTE_CONFIG_NUM_OF_LOW_POWER_EVENTS 1
#endif

// <o> GPIOTE_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 GPIOTE_CONFIG_IRQ_PRIORITY
#define GPIOTE_CONFIG_IRQ_PRIORITY 3
#endif

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

#ifndef GPIOTE_CONFIG_LOG_LEVEL
#define GPIOTE_CONFIG_LOG_LEVEL 3
#endif

// <o> GPIOTE_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 GPIOTE_CONFIG_INFO_COLOR
#define GPIOTE_CONFIG_INFO_COLOR 0
#endif

// <o> GPIOTE_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 GPIOTE_CONFIG_DEBUG_COLOR
#define GPIOTE_CONFIG_DEBUG_COLOR 0
#endif

#endif //GPIOTE_CONFIG_LOG_ENABLED
// </e>

#endif //GPIOTE_ENABLED
// </e>

// <e> PERIPHERAL_RESOURCE_SHARING_ENABLED - nrf_drv_common - Peripheral drivers common module
//==========================================================
#ifndef PERIPHERAL_RESOURCE_SHARING_ENABLED
#define PERIPHERAL_RESOURCE_SHARING_ENABLED 0
#endif
#if  PERIPHERAL_RESOURCE_SHARING_ENABLED
// <e> COMMON_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef COMMON_CONFIG_LOG_ENABLED
#define COMMON_CONFIG_LOG_ENABLED 0
#endif
#if  COMMON_CONFIG_LOG_ENABLED
// <o> COMMON_CONFIG_LOG_LEVEL  - Default Severity level
 
// <0=> Off 
// <1=> Error 
// <2=> Warning 
// <3=> Info 
// <4=> Debug 

#ifndef COMMON_CONFIG_LOG_LEVEL
#define COMMON_CONFIG_LOG_LEVEL 3
#endif

// <o> COMMON_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 COMMON_CONFIG_INFO_COLOR
#define COMMON_CONFIG_INFO_COLOR 0
#endif

// <o> COMMON_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 COMMON_CONFIG_DEBUG_COLOR
#define COMMON_CONFIG_DEBUG_COLOR 0
#endif

#endif //COMMON_CONFIG_LOG_ENABLED
// </e>

#endif //PERIPHERAL_RESOURCE_SHARING_ENABLED
// </e>

// <e> UART_ENABLED - nrf_drv_uart - UART/UARTE peripheral driver
//==========================================================
#ifndef UART_ENABLED
#define UART_ENABLED 1
#endif
#if  UART_ENABLED
// <o> UART_DEFAULT_CONFIG_HWFC  - Hardware Flow Control
 
// <0=> Disabled 
// <1=> Enabled 

#ifndef UART_DEFAULT_CONFIG_HWFC
#define UART_DEFAULT_CONFIG_HWFC 0
#endif

// <o> UART_DEFAULT_CONFIG_PARITY  - Parity
 
// <0=> Excluded 
// <14=> Included 

#ifndef UART_DEFAULT_CONFIG_PARITY
#define UART_DEFAULT_CONFIG_PARITY 0
#endif

// <o> UART_DEFAULT_CONFIG_BAUDRATE  - Default Baudrate
 
// <323584=> 1200 baud 
// <643072=> 2400 baud 
// <1290240=> 4800 baud 
// <2576384=> 9600 baud 
// <3862528=> 14400 baud 
// <5152768=> 19200 baud 
// <7716864=> 28800 baud 
// <10289152=> 38400 baud 
// <15400960=> 57600 baud 
// <20615168=> 76800 baud 
// <30924800=> 115200 baud 
// <61865984=> 230400 baud 
// <67108864=> 250000 baud 
// <121634816=> 460800 baud 
// <251658240=> 921600 baud 
// <268435456=> 57600 baud 

#ifndef UART_DEFAULT_CONFIG_BAUDRATE
#define UART_DEFAULT_CONFIG_BAUDRATE 30924800
#endif

// <o> UART_DEFAULT_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 UART_DEFAULT_CONFIG_IRQ_PRIORITY
#define UART_DEFAULT_CONFIG_IRQ_PRIORITY 3
#endif

// <q> UART_EASY_DMA_SUPPORT  - Driver supporting EasyDMA
 

#ifndef UART_EASY_DMA_SUPPORT
#define UART_EASY_DMA_SUPPORT 1
#endif

// <q> UART_LEGACY_SUPPORT  - Driver supporting Legacy mode
 

#ifndef UART_LEGACY_SUPPORT
#define UART_LEGACY_SUPPORT 1
#endif

// <e> UART0_ENABLED - Enable UART0 instance
//==========================================================
#ifndef UART0_ENABLED
#define UART0_ENABLED 1
#endif
#if  UART0_ENABLED
// <q> UART0_CONFIG_USE_EASY_DMA  - Default setting for using EasyDMA
 

#ifndef UART0_CONFIG_USE_EASY_DMA
#define UART0_CONFIG_USE_EASY_DMA 1
#endif

#endif //UART0_ENABLED
// </e>

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

#ifndef UART_CONFIG_LOG_LEVEL
#define UART_CONFIG_LOG_LEVEL 3
#endif

// <o> UART_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 UART_CONFIG_INFO_COLOR
#define UART_CONFIG_INFO_COLOR 0
#endif

// <o> UART_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 UART_CONFIG_DEBUG_COLOR
#define UART_CONFIG_DEBUG_COLOR 0
#endif

#endif //UART_CONFIG_LOG_ENABLED
// </e>

#endif //UART_ENABLED
// </e>

// </h> 
//==========================================================

// <h> nRF_Log 

//==========================================================
// <e> NRF_LOG_ENABLED - nrf_log - Logging
//==========================================================
#ifndef NRF_LOG_ENABLED
#define NRF_LOG_ENABLED 0
#endif
#if  NRF_LOG_ENABLED
// <e> NRF_LOG_USES_COLORS - If enabled then ANSI escape code for colors is prefixed to every string
//==========================================================
#ifndef NRF_LOG_USES_COLORS
#define NRF_LOG_USES_COLORS 0
#endif
#if  NRF_LOG_USES_COLORS
// <o> NRF_LOG_COLOR_DEFAULT  - ANSI escape code prefix.
 
// <0=> Default 
// <1=> Black 
// <2=> Red 
// <3=> Green 
// <4=> Yellow 
// <5=> Blue 
// <6=> Magenta 
// <7=> Cyan 
// <8=> White 

#ifndef NRF_LOG_COLOR_DEFAULT
#define NRF_LOG_COLOR_DEFAULT 0
#endif

// <o> NRF_LOG_ERROR_COLOR  - ANSI escape code prefix.
 
// <0=> Default 
// <1=> Black 
// <2=> Red 
// <3=> Green 
// <4=> Yellow 
// <5=> Blue 
// <6=> Magenta 
// <7=> Cyan 
// <8=> White 

#ifndef NRF_LOG_ERROR_COLOR
#define NRF_LOG_ERROR_COLOR 0
#endif

// <o> NRF_LOG_WARNING_COLOR  - ANSI escape code prefix.
 
// <0=> Default 
// <1=> Black 
// <2=> Red 
// <3=> Green 
// <4=> Yellow 
// <5=> Blue 
// <6=> Magenta 
// <7=> Cyan 
// <8=> White 

#ifndef NRF_LOG_WARNING_COLOR
#define NRF_LOG_WARNING_COLOR 0
#endif

#endif //NRF_LOG_USES_COLORS
// </e>

// <o> NRF_LOG_DEFAULT_LEVEL  - Default Severity level
 
// <0=> Off 
// <1=> Error 
// <2=> Warning 
// <3=> Info 
// <4=> Debug 

#ifndef NRF_LOG_DEFAULT_LEVEL
#define NRF_LOG_DEFAULT_LEVEL 3
#endif

// <e> NRF_LOG_DEFERRED - Enable deffered logger.

// <i> Log data is buffered and can be processed in idle.
//==========================================================
#ifndef NRF_LOG_DEFERRED
#define NRF_LOG_DEFERRED 1
#endif
#if  NRF_LOG_DEFERRED
// <o> NRF_LOG_DEFERRED_BUFSIZE - Size of the buffer for logs in words. 
// <i> Must be power of 2

#ifndef NRF_LOG_DEFERRED_BUFSIZE
#define NRF_LOG_DEFERRED_BUFSIZE 256
#endif

#endif //NRF_LOG_DEFERRED
// </e>

// <q> NRF_LOG_USES_TIMESTAMP  - Enable timestamping
 

// <i> Function for getting the timestamp is provided by the user

#ifndef NRF_LOG_USES_TIMESTAMP
#define NRF_LOG_USES_TIMESTAMP 0
#endif

#endif //NRF_LOG_ENABLED
// </e>

// <h> nrf_log_backend - Logging sink

//==========================================================
// <o> NRF_LOG_BACKEND_MAX_STRING_LENGTH - Buffer for storing single output string 
// <i> Logger backend RAM usage is determined by this value.

#ifndef NRF_LOG_BACKEND_MAX_STRING_LENGTH
#define NRF_LOG_BACKEND_MAX_STRING_LENGTH 256
#endif

// <o> NRF_LOG_TIMESTAMP_DIGITS - Number of digits for timestamp 
// <i> If higher resolution timestamp source is used it might be needed to increase that

#ifndef NRF_LOG_TIMESTAMP_DIGITS
#define NRF_LOG_TIMESTAMP_DIGITS 8
#endif

// <e> NRF_LOG_BACKEND_SERIAL_USES_UART - If enabled data is printed over UART
//==========================================================
#ifndef NRF_LOG_BACKEND_SERIAL_USES_UART
#define NRF_LOG_BACKEND_SERIAL_USES_UART 1
#endif
#if  NRF_LOG_BACKEND_SERIAL_USES_UART
// <o> NRF_LOG_BACKEND_SERIAL_UART_BAUDRATE  - Default Baudrate
 
// <323584=> 1200 baud 
// <643072=> 2400 baud 
// <1290240=> 4800 baud 
// <2576384=> 9600 baud 
// <3862528=> 14400 baud 
// <5152768=> 19200 baud 
// <7716864=> 28800 baud 
// <10289152=> 38400 baud 
// <15400960=> 57600 baud 
// <20615168=> 76800 baud 
// <30924800=> 115200 baud 
// <61865984=> 230400 baud 
// <67108864=> 250000 baud 
// <121634816=> 460800 baud 
// <251658240=> 921600 baud 
// <268435456=> 57600 baud 

#ifndef NRF_LOG_BACKEND_SERIAL_UART_BAUDRATE
#define NRF_LOG_BACKEND_SERIAL_UART_BAUDRATE 30924800
#endif

// <o> NRF_LOG_BACKEND_SERIAL_UART_TX_PIN - UART TX pin 
#ifndef NRF_LOG_BACKEND_SERIAL_UART_TX_PIN
#define NRF_LOG_BACKEND_SERIAL_UART_TX_PIN 9
#endif

// <o> NRF_LOG_BACKEND_SERIAL_UART_RX_PIN - UART RX pin 
#ifndef NRF_LOG_BACKEND_SERIAL_UART_RX_PIN
#define NRF_LOG_BACKEND_SERIAL_UART_RX_PIN 11
#endif

// <o> NRF_LOG_BACKEND_SERIAL_UART_RTS_PIN - UART RTS pin 
#ifndef NRF_LOG_BACKEND_SERIAL_UART_RTS_PIN
#define NRF_LOG_BACKEND_SERIAL_UART_RTS_PIN 8
#endif

// <o> NRF_LOG_BACKEND_SERIAL_UART_CTS_PIN - UART CTS pin 
#ifndef NRF_LOG_BACKEND_SERIAL_UART_CTS_PIN
#define NRF_LOG_BACKEND_SERIAL_UART_CTS_PIN 10
#endif

// <o> NRF_LOG_BACKEND_SERIAL_UART_FLOW_CONTROL  - Hardware Flow Control
 
// <0=> Disabled 
// <1=> Enabled 

#ifndef NRF_LOG_BACKEND_SERIAL_UART_FLOW_CONTROL
#define NRF_LOG_BACKEND_SERIAL_UART_FLOW_CONTROL 0
#endif

// <o> NRF_LOG_BACKEND_UART_INSTANCE  - UART instance used
 
// <0=> 0 

#ifndef NRF_LOG_BACKEND_UART_INSTANCE
#define NRF_LOG_BACKEND_UART_INSTANCE 0
#endif

#endif //NRF_LOG_BACKEND_SERIAL_USES_UART
// </e>

// <e> NRF_LOG_BACKEND_SERIAL_USES_RTT - If enabled data is printed using RTT
//==========================================================
#ifndef NRF_LOG_BACKEND_SERIAL_USES_RTT
#define NRF_LOG_BACKEND_SERIAL_USES_RTT 0
#endif
#if  NRF_LOG_BACKEND_SERIAL_USES_RTT
// <o> NRF_LOG_BACKEND_RTT_OUTPUT_BUFFER_SIZE - RTT output buffer size. 
// <i> Should be equal or bigger than \ref NRF_LOG_BACKEND_MAX_STRING_LENGTH.
// <i> This value is used in Segger RTT configuration to set the buffer size
// <i> if it is bigger than default RTT buffer size.

#ifndef NRF_LOG_BACKEND_RTT_OUTPUT_BUFFER_SIZE
#define NRF_LOG_BACKEND_RTT_OUTPUT_BUFFER_SIZE 512
#endif

#endif //NRF_LOG_BACKEND_SERIAL_USES_RTT
// </e>

// </h> 
//==========================================================

// </h> 
//==========================================================

// <h> nRF_Segger_RTT 

//==========================================================
// <h> segger_rtt - SEGGER RTT

//==========================================================
// <o> SEGGER_RTT_CONFIG_BUFFER_SIZE_UP - Size of upstream buffer. 
#ifndef SEGGER_RTT_CONFIG_BUFFER_SIZE_UP
#define SEGGER_RTT_CONFIG_BUFFER_SIZE_UP 64
#endif

// <o> SEGGER_RTT_CONFIG_MAX_NUM_UP_BUFFERS - Size of upstream buffer. 
#ifndef SEGGER_RTT_CONFIG_MAX_NUM_UP_BUFFERS
#define SEGGER_RTT_CONFIG_MAX_NUM_UP_BUFFERS 2
#endif

// <o> SEGGER_RTT_CONFIG_BUFFER_SIZE_DOWN - Size of upstream buffer. 
#ifndef SEGGER_RTT_CONFIG_BUFFER_SIZE_DOWN
#define SEGGER_RTT_CONFIG_BUFFER_SIZE_DOWN 16
#endif

// <o> SEGGER_RTT_CONFIG_MAX_NUM_DOWN_BUFFERS - Size of upstream buffer. 
#ifndef SEGGER_RTT_CONFIG_MAX_NUM_DOWN_BUFFERS
#define SEGGER_RTT_CONFIG_MAX_NUM_DOWN_BUFFERS 2
#endif

// </h> 
//==========================================================

// </h> 
//==========================================================

// <<< end of configuration section >>>
#endif //SDK_CONFIG_H

Parents

0 Andy Neil over 4 years ago

For specific details about the Nordic chip, and/or the Nordic SDK - you need to ask Nordic!

https://devzone.nordicsemi.com/

For understanding the Cortex-M0+ core - including its interrupt handling - get Joseph Yiu's excellent book:

https://www.elsevier.com/books/the-definitive-guide-to-arm-cortex-m0-and-cortex-m0-processors/yiu/978-0-12-803277-0

There is also the ARM documentation:

http://infocenter.arm.com/help/topic/com.arm.doc.subset.cortexm.m0plus/index.html

https://developer.arm.com/docs

And plenty of other books:

http://www.keil.com/books/armbooks.asp
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0 Andy Neil over 4 years ago

For specific details about the Nordic chip, and/or the Nordic SDK - you need to ask Nordic!

https://devzone.nordicsemi.com/

For understanding the Cortex-M0+ core - including its interrupt handling - get Joseph Yiu's excellent book:

https://www.elsevier.com/books/the-definitive-guide-to-arm-cortex-m0-and-cortex-m0-processors/yiu/978-0-12-803277-0

There is also the ARM documentation:

http://infocenter.arm.com/help/topic/com.arm.doc.subset.cortexm.m0plus/index.html

https://developer.arm.com/docs

And plenty of other books:

http://www.keil.com/books/armbooks.asp
Cancel
Up 0 Down

Cancel

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