Error starting process java

[alleekhaan]

Hi,

I followed this video to setup CMSIS wizard but somehow i am missing something and I am getting the following error.

1. CMSIS Config sdk_config.h
2. Error starting process java

After some research, I found that i am missing jave installation. I gave the path in macro but stll it is not working.

Let me know what i am missing here plz.
Thanks

[Hung Bui]

Hi Alleekhaan, 
nRF5 SDK is very old and is not recommended for new development. We have switched to NRF Connect SDK since 2020. 

Do you have a reason that you would need to continue with nRF5 SDK ? 

Have you tried to run the tool independently by double click on the .jar file  ? Make sure you have installed Java on your machine.  

[alleekhaan]

Hi,

I tried to install it but it didn't work by double clicking. It should be .exe to install that way.

I am using segger studio and very new to Nordic chips. I don't want to go on Zephr path for now or visual studio.

What exactly i needed to install java or .jar in my computer?

[alleekhaan]

Ok,
I resolved it.
I downloaded Java then install CMSIS with it and now it's working.
Thanks for all your help.
I would love to get your feedback about Connect SDK if i can integrate it in Segger Studio.
Thanks

[Hung Bui]

Hi Allekhaan, 
For nRF Connect SDK, we recommend Visual Studio Code. Segger Studio was supported a few years back but we now focus on VS Code only. 

[alleekhaan]

Hi Hung Bui 
Thanks for your reply.
I have a custom board connected with DK and i was able to program it and test some simple codes.
I need to test this TWI example on my board.
I uploaded it but i am not sure if sensor is working or not.
I need to see some data on some serial port or Segger studio.
Can you help me with it plz?

#include <stdio.h>
#include "boards.h"
#include "app_util_platform.h"
#include "app_error.h"
#include "nrf_drv_twi.h"



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

/* TWI instance ID. */
#if TWI0_ENABLED
#define TWI_INSTANCE_ID     0
#elif TWI1_ENABLED
#define TWI_INSTANCE_ID     1
#endif

 /* Number of possible TWI addresses. */
 #define TWI_ADDRESSES      0x14

/* TWI instance. */
static const nrf_drv_twi_t m_twi = NRF_DRV_TWI_INSTANCE(TWI_INSTANCE_ID);


/**
 * @brief TWI initialization.
 */
void twi_init (void)
{
    ret_code_t err_code;

    const nrf_drv_twi_config_t twi_config = {
       .scl                = 27,
       .sda                = 26,
       .frequency          = NRF_DRV_TWI_FREQ_100K,
       .interrupt_priority = APP_IRQ_PRIORITY_HIGH,
       .clear_bus_init     = false
    };

    err_code = nrf_drv_twi_init(&m_twi, &twi_config, NULL, NULL);
    APP_ERROR_CHECK(err_code);

    nrf_drv_twi_enable(&m_twi);
}


/**
 * @brief Function for main application entry.
 */
int main(void)
{
    ret_code_t err_code;
    uint8_t address;
    uint8_t sample_data;
    bool detected_device = false;

    APP_ERROR_CHECK(NRF_LOG_INIT(NULL));
    NRF_LOG_DEFAULT_BACKENDS_INIT();

    NRF_LOG_INFO("TWI scanner started.");
    NRF_LOG_FLUSH();
    twi_init();

    for (address = 1; address <= TWI_ADDRESSES; address++)
    {
        err_code = nrf_drv_twi_rx(&m_twi, address, &sample_data, sizeof(sample_data));
        if (err_code == NRF_SUCCESS)
        {
            detected_device = true;
            NRF_LOG_INFO("TWI device detected at address 0x%x.", address);
        }
        NRF_LOG_FLUSH();
    }

    if (!detected_device)
    {
        NRF_LOG_INFO("No device was found.");
        NRF_LOG_FLUSH();
    }

    while (true)
    {
        /* Empty loop. */
    }
}

/** @} */

By the way, I had to exclude SEGGER_RTT_Syscalls_SES.c from the project because it was giving me some printf issues.