nrf52832 / nrf52840 NUS

[nordicuser91]

Hi All,

I have been trying to implement NUS on my nrf52832/nrf52840. I have that application working on both of them. Recently I wanted to implement the same functionality (NUS) on another application. I have ported the code from my old application to the new also taking care of all the dependencies. The application runs but it is not able to advertise. I play with Placement Macros (RAM and Flash) size which atleast doesn't give me ud memory fail.

if (nrf_sdh_ble_enable(&ram_start) != NRF_SUCCESS)
    {
        printf("ud memory fail\n");
    }

But still I am not able to receive advertisement. I believe I am not setting the RAM and Flash parameters correctly. Here is the current configuration.

FLASH_PH_START=0x0
FLASH_PH_SIZE=0x80000
RAM_PH_START=0x20000000
RAM_PH_SIZE=0x10000
FLASH_START=0x26000
FLASH_SIZE=0x5a000
RAM_START=0x20003d18
RAM_SIZE=0xe2e8

Also is it possible to use s132 with nrf52840?

I have gone through this link but couldn't use it properly. Any help much will be much appreciated. 

Thanks

Regards

[Edvin]

Hello,

Try to turn on logging, and monitor the logs from inside nrf_sdh_ble_enable(). It should say what you need to adjust your RAM settings to. I can't tell from your description, but it will calculate it for you, and display it in the log.

Best regards,

Edvin

[nordicuser91]

So I tried to printed out the RAM start address using the following but it doesn't even cross

err_code = nrf_sdh_enable_request();

The following function initializes my stack:

void ble_ud_stack_init(void)
{
    uint32_t err_code;
    uint32_t ram_start = 0;
    err_code = nrf_sdh_enable_request();
    APP_ERROR_CHECK(err_code);
    printf("--------------------here1\n");
    if (nrf_sdh_ble_default_cfg_set(APP_BLE_CONN_CFG_TAG, &ram_start) != NRF_SUCCESS)
        printf("ud fail\n");
    if (nrf_sdh_ble_enable(&ram_start) != NRF_SUCCESS)
    {
        printf("ud memory fail\n");
    }
    printf("BLE Application RAM start address = %x\n", ram_start);
    NRF_SDH_BLE_OBSERVER(m_ble_observer, APP_BLE_OBSERVER_PRIO, ble_ud_stack_evt_handler, NULL);
}

I am able to compile but when I run I get following error:

ERROR 8 [NRF_ERROR_INVALID_STATE]

Currently I have the following macros for nrf52840:

FLASH_PH_START=0x0
FLASH_PH_SIZE=0x100000
RAM_PH_START=0x20000000
RAM_PH_SIZE=0x40000
FLASH_START=0x27000
FLASH_SIZE=0xd9000
RAM_START=0x20003460
RAM_SIZE=0x3dd00

[Edvin]

nordicuser91 said:

I am able to compile but when I run I get following error:

What function returns this? nrf_sdh_enable_request() or nrf_sdh_ble_enable()?

Either way, I suggest you replace line 8 -> 15 with nrf_sdh_ble_enable() from nrf_sdh_ble.c. This will print in the log what you need to change your RAM settings to. Again, I don't know without having your entire application. 

BR,

Edvin

[nordicuser91]

err_code = nrf_sdh_enable_request();

Return the error

ERROR 8 [NRF_ERROR_INVALID_STATE]

[Edvin]

Yes, it will return that.

But what did the log say?

Do you see the log output at all? If not, please let me know.

BR,
Edvin