How logging is done in nrf52832 nrf17.0 sdk and nrf5.0 mesh sdk?

[Ela]

Hi,

I want to know how logging is happening in the nrf 17.0 sdk and nrf5.0 mesh sdk is it different in any case in nrf sdk and nrf mesh sdk? As, in infocenter of nordic it is mentioned in logger module post, that we can use RTT or UART for backend logging by just initialising the log_init with intialising the backend function with RTT or UART. 

I have used provisioner example code from nrf5.0 mesh sdk and have done changes regarding getting logs over UART instead of RTT, but i was not able to do so.

I have some points to ask regarding logging:

1) Can we get logs or setup bidirectional communication over UART for nrf52832 development kit? If yes, then how, right now we are getting logs and sending commands using RTT for any existing example code. I have tried certain things as mentioned in some of devzone post and in the logger module section of the nordic infocenter, will attach the changes. 

2)  How should we test the logs over UART instead of RTT using the same USB cable or have to take connections from the UART pins ?

Changes i have done for getting the bidirectional communication via UART i.e, to send and recieve commands from UART as we are doing using RTT as of now. Changes in file "main.c"

#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"



#if defined (UART_PRESENT)
#include "nrf_uart.h"
#endif
#if defined (UARTE_PRESENT)
#include "nrf_uarte.h"
#endif



#define UART_TX_BUF_SIZE                256                                         /**< UART TX buffer size. */
#define UART_RX_BUF_SIZE                256                                         /**< UART RX buffer size. */
#include "app_uart.h"







/***uart******/
void uart_error_handle(app_uart_evt_t * p_event)
{
    if (p_event->evt_type == APP_UART_COMMUNICATION_ERROR)
    {
        APP_ERROR_HANDLER(p_event->data.error_communication);
    }
    else if (p_event->evt_type == APP_UART_FIFO_ERROR)
    {
        APP_ERROR_HANDLER(p_event->data.error_code);
    }
}
           





void uart_event_handle(app_uart_evt_t * p_event)
{
     printf("\r\nUART started uart event handler .\r\n");


}



/**@brief  Function for initializing the UART module.
 */
/**@snippet [UART Initialization] */
static void uart_init(void)
{
    printf("\r\nUART started initialisation .\r\n");
    uint32_t                     err_code;
    app_uart_comm_params_t const comm_params =
    {
        .rx_pin_no    = RX_PIN_NUMBER,
        .tx_pin_no    = TX_PIN_NUMBER,
        .rts_pin_no   = RTS_PIN_NUMBER,
        .cts_pin_no   = CTS_PIN_NUMBER,
        .flow_control = APP_UART_FLOW_CONTROL_DISABLED,
        .use_parity   = false,
#if defined (UART_PRESENT)
       // printf("\r\nUART started intialisation if defined.\r\n"); 
        .baud_rate    = NRF_UART_BAUDRATE_115200
#else
        .baud_rate    = NRF_UARTE_BAUDRATE_115200
#endif
    };

    APP_UART_FIFO_INIT(&comm_params,
                       UART_RX_BUF_SIZE,
                       UART_TX_BUF_SIZE,
                       uart_event_handle,
                       APP_IRQ_PRIORITY_LOWEST,
                       err_code);
    APP_ERROR_CHECK(err_code);
}
/**@snippet [UART Initialization] */





/**@brief Function for initializing the nrf log module.
 */
static void log_init(void)
{
     printf("\r\nUART started loginit initialisation.\r\n");
    ret_code_t err_code = NRF_LOG_INIT(NULL);
    APP_ERROR_CHECK(err_code);

    NRF_LOG_DEFAULT_BACKENDS_INIT();
}




/**@brief Function for initializing the timer module.
 */
static void timers_init(void)
{
      printf("\r\nUART started timer initialisation.\r\n");
    ret_code_t err_code = app_timer_init();
    APP_ERROR_CHECK(err_code);
}





int main(void)
{
 

     printf("\r\nUART provision started.\r\n");
     // initialize
    //uart_init();
    //log_init();
    uart_init();
    log_init();
    timers_init();
    initialize();
    start();

    for (;;)
    {
        (void)sd_app_evt_wait();
    }
}

In file "sdk_config.h"

// <e> NRFX_UARTE_ENABLED - nrfx_uarte - UARTE peripheral driver
//==========================================================
#ifndef NRFX_UARTE_ENABLED
#define NRFX_UARTE_ENABLED 
#endif
// <o> NRFX_UARTE0_ENABLED - Enable UARTE0 instance
#ifndef NRFX_UARTE0_ENABLED
#define NRFX_UARTE0_ENABLED 0
#endif

// <o> NRFX_UARTE_DEFAULT_CONFIG_HWFC  - Hardware Flow Control

// <0=> Disabled
// <1=> Enabled

#ifndef NRFX_UARTE_DEFAULT_CONFIG_HWFC
#define NRFX_UARTE_DEFAULT_CONFIG_HWFC 0
#endif

// <o> NRFX_UARTE_DEFAULT_CONFIG_PARITY  - Parity

// <0=> Excluded
// <14=> Included

#ifndef NRFX_UARTE_DEFAULT_CONFIG_PARITY
#define NRFX_UARTE_DEFAULT_CONFIG_PARITY 0
#endif

// <o> NRFX_UARTE_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
// <8388608=> 31250 baud
// <10289152=> 38400 baud
// <15007744=> 56000 baud
// <15400960=> 57600 baud
// <20615168=> 76800 baud
// <30801920=> 115200 baud
// <61865984=> 230400 baud
// <67108864=> 250000 baud
// <121634816=> 460800 baud
// <251658240=> 921600 baud
// <268435456=> 1000000 baud

#ifndef NRFX_UARTE_DEFAULT_CONFIG_BAUDRATE
#define NRFX_UARTE_DEFAULT_CONFIG_BAUDRATE 30801920
#endif

// <o> NRFX_UARTE_DEFAULT_CONFIG_IRQ_PRIORITY  - Interrupt priority

// <0=> 0 (highest)
// <1=> 1
// <2=> 2
// <3=> 3
// <4=> 4
// <5=> 5
// <6=> 6
// <7=> 7

#ifndef NRFX_UARTE_DEFAULT_CONFIG_IRQ_PRIORITY
#define NRFX_UARTE_DEFAULT_CONFIG_IRQ_PRIORITY 6
#endif

// <e> NRFX_UARTE_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef NRFX_UARTE_CONFIG_LOG_ENABLED
#define NRFX_UARTE_CONFIG_LOG_ENABLED 0
#endif
// <o> NRFX_UARTE_CONFIG_LOG_LEVEL  - Default Severity level

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

#ifndef NRFX_UARTE_CONFIG_LOG_LEVEL
#define NRFX_UARTE_CONFIG_LOG_LEVEL 3
#endif

// <o> NRFX_UARTE_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 NRFX_UARTE_CONFIG_INFO_COLOR
#define NRFX_UARTE_CONFIG_INFO_COLOR 0
#endif

// <o> NRFX_UARTE_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 NRFX_UARTE_CONFIG_DEBUG_COLOR
#define NRFX_UARTE_CONFIG_DEBUG_COLOR 0
#endif

// </e>

// </e>

// <e> NRFX_UART_ENABLED - nrfx_uart - UART peripheral driver
//==========================================================
#ifndef NRFX_UART_ENABLED
#define NRFX_UART_ENABLED 0//1
#endif
// <o> NRFX_UART0_ENABLED - Enable UART0 instance
#ifndef NRFX_UART0_ENABLED
#define NRFX_UART0_ENABLED 0
#endif

// <o> NRFX_UART_DEFAULT_CONFIG_HWFC  - Hardware Flow Control

// <0=> Disabled
// <1=> Enabled

#ifndef NRFX_UART_DEFAULT_CONFIG_HWFC
#define NRFX_UART_DEFAULT_CONFIG_HWFC 0
#endif

// <o> NRFX_UART_DEFAULT_CONFIG_PARITY  - Parity

// <0=> Excluded
// <14=> Included

#ifndef NRFX_UART_DEFAULT_CONFIG_PARITY
#define NRFX_UART_DEFAULT_CONFIG_PARITY 0
#endif

// <o> NRFX_UART_DEFAULT_CONFIG_BAUDRATE  - Default Baudrate

// <323584=> 1200 baud
// <643072=> 2400 baud
// <1290240=> 4800 baud
// <2576384=> 9600 baud
// <3866624=> 14400 baud
// <5152768=> 19200 baud
// <7729152=> 28800 baud
// <8388608=> 31250 baud
// <10309632=> 38400 baud
// <15007744=> 56000 baud
// <15462400=> 57600 baud
// <20615168=> 76800 baud
// <30924800=> 115200 baud
// <61845504=> 230400 baud
// <67108864=> 250000 baud
// <123695104=> 460800 baud
// <247386112=> 921600 baud
// <268435456=> 1000000 baud

#ifndef NRFX_UART_DEFAULT_CONFIG_BAUDRATE
#define NRFX_UART_DEFAULT_CONFIG_BAUDRATE 30924800
#endif

// <o> NRFX_UART_DEFAULT_CONFIG_IRQ_PRIORITY  - Interrupt priority

// <0=> 0 (highest)
// <1=> 1
// <2=> 2
// <3=> 3
// <4=> 4
// <5=> 5
// <6=> 6
// <7=> 7

#ifndef NRFX_UART_DEFAULT_CONFIG_IRQ_PRIORITY
#define NRFX_UART_DEFAULT_CONFIG_IRQ_PRIORITY 6
#endif

// <e> NRFX_UART_CONFIG_LOG_ENABLED - Enables logging in the module.
//==========================================================
#ifndef NRFX_UART_CONFIG_LOG_ENABLED
#define NRFX_UART_CONFIG_LOG_ENABLED 0
#endif
// <o> NRFX_UART_CONFIG_LOG_LEVEL  - Default Severity level

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

#ifndef NRFX_UART_CONFIG_LOG_LEVEL
#define NRFX_UART_CONFIG_LOG_LEVEL 3
#endif

// <o> NRFX_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 NRFX_UART_CONFIG_INFO_COLOR
#define NRFX_UART_CONFIG_INFO_COLOR 0
#endif

// <o> NRFX_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 NRFX_UART_CONFIG_DEBUG_COLOR
#define NRFX_UART_CONFIG_DEBUG_COLOR 0
#endif




// </e>
#ifndef RETARGET_ENABLED
#define RETARGET_ENABLED 1
#endif
//==========================================================
// <q> APP_FIFO_ENABLED  - app_fifo - Software FIFO implementation
 

#ifndef APP_FIFO_ENABLED
#define APP_FIFO_ENABLED 1
#endif


// <e> APP_UART_ENABLED - app_uart - UART driver
//==========================================================
#ifndef APP_UART_ENABLED
#define APP_UART_ENABLED 1
#endif

#if  APP_UART_ENABLED
// <o> APP_UART_DRIVER_INSTANCE  - UART instance used
 
// <0=> 0 

#ifndef APP_UART_DRIVER_INSTANCE
#define APP_UART_DRIVER_INSTANCE 0
#endif

#endif //APP_UART_ENABLED

// <e> UART_ENABLED - nrf_drv_uart - UART/UARTE peripheral driver - legacy layer
//==========================================================
#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
// <30801920=> 115200 baud
// <61865984=> 230400 baud
// <67108864=> 250000 baud
// <121634816=> 460800 baud
// <251658240=> 921600 baud
// <268435456=> 1000000 baud

#ifndef UART_DEFAULT_CONFIG_BAUDRATE
#define UART_DEFAULT_CONFIG_BAUDRATE 30801920
#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
// <4=> 4
// <5=> 5
// <6=> 6
// <7=> 7

#ifndef UART_DEFAULT_CONFIG_IRQ_PRIORITY
#define UART_DEFAULT_CONFIG_IRQ_PRIORITY 6
#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 0//1
#endif

#endif //UART_ENABLED


// <e> UART0_ENABLED - Enable UART0 instance
//==========================================================
#ifndef UART0_ENABLED
#define UART0_ENABLED 1
#endif
// <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

// </e>




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

// <h> nRF_Log

//==========================================================
// <e> NRF_LOG_BACKEND_UART_ENABLED - nrf_log_backend_rtt - Log UART backend
//==========================================================
#ifndef NRF_LOG_BACKEND_UART_ENABLED
#define NRF_LOG_BACKEND_UART_ENABLED 0
#endif




//==========================================================
// <e> NRF_LOG_BACKEND_RTT_ENABLED - nrf_log_backend_rtt - Log RTT backend
//==========================================================
#ifndef NRF_LOG_BACKEND_RTT_ENABLED
#define NRF_LOG_BACKEND_RTT_ENABLED 1
#endif



// <o> NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE - Size of buffer for partially processed strings. 
// <i> Size of the buffer is a trade-off between RAM usage and processing.
// <i> if buffer is smaller then strings will often be fragmented.
// <i> It is recommended to use size which will fit typical log and only the
// <i> longer one will be fragmented.

#ifndef NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE
#define NRF_LOG_BACKEND_RTT_TEMP_BUFFER_SIZE 64
#endif

// <o> NRF_LOG_BACKEND_RTT_TX_RETRY_DELAY_MS - Period before retrying writing to RTT 
#ifndef NRF_LOG_BACKEND_RTT_TX_RETRY_DELAY_MS
#define NRF_LOG_BACKEND_RTT_TX_RETRY_DELAY_MS 1
#endif

// <o> NRF_LOG_BACKEND_RTT_TX_RETRY_CNT - Writing to RTT retries. 
// <i> If RTT fails to accept any new data after retries
// <i> module assumes that host is not active and on next
// <i> request it will perform only one write attempt.
// <i> On successful writing, module assumes that host is active
// <i> and scheme with retry is applied again.

#ifndef NRF_LOG_BACKEND_RTT_TX_RETRY_CNT
#define NRF_LOG_BACKEND_RTT_TX_RETRY_CNT 3
#endif

// </e>

// <e> NRF_LOG_ENABLED - nrf_log - Logger
//==========================================================
#ifndef NRF_LOG_ENABLED
#define NRF_LOG_ENABLED 1//0
#endif
// <h> Log message pool - Configuration of log message pool



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

Is it the way we should proceed with it. If not, then please suggest me how to achieve this, if yes, then how to test as i am not able to achieve by these changes.

Thanks & Regards,

Ela

[Mttrinh]

Hi,

I want to know how logging is happening in the nrf 17.0 sdk and nrf5.0 mesh sdk is it different in any case in nrf sdk and nrf mesh sdk?

The difference in the two SDKs in regards to logging is that logging via UART isn't enabled. This is possible to implement yourself. 

1) Can we get logs or setup bidirectional communication over UART for nrf52832 development kit? If yes, then how, right now we are getting logs and sending commands using RTT for any existing example code. I have tried certain things as mentioned in some of devzone post and in the logger module section of the nordic infocenter, will attach the changes. 

Maybe this can help you, there is also an example attached.

2)  How should we test the logs over UART instead of RTT using the same USB cable or have to take connections from the UART pins ?

Are you using a DK? If so, the UART pins are internally connected to the on-board debugger and you can connect it to a PC via a USB cable. It will be available as normal COM port.

[Ela]

Hi Mttrinh,

1) Can you please explain me little more about in which sdk logging via uart is not enabled and how to enable logging via UART with mesh sdk. In both nrf 17.02 sdk and nrf 5.0 mesh sdk logging is happening via RTT, how to get the same logs what we are getting over RTT on UART with mesh sdk?

2) I have tried implementing by taking same example reference but it did not work out for me, in this thread i have mentioned my code changes snippet for changes regarding uart logging, can you please just let me know what i have done wrong there, as changs are not working, i have taken the same example reference you mentioned.

3) I am using nrf52832 DK.  I want to use UART pins not by using USB cable. I want to use UART pins (P0.8 RX and P0.6 Tx as mentioned in nrf52832 schematics) by connecting them to FTDI cable i do not want to use on baord debugger and USB for getting logs over UART. Can you please help me with this? It will be very helpful.

Thanks & Regards,

Ela