Problem stopping ADC and restart again

RE: Problem stopping ADC and restart again

Jørgen Holmefjord — Wed, 01 Aug 2018 12:12:32 GMT

This is described in the SDK 15.0.0 migration guide.

RE: Problem stopping ADC and restart again

Juan Moya — Wed, 01 Aug 2018 07:47:31 GMT

Hello,

I am moving the code to the new version.

There are a lot of changes.

I used this function to update the info in the advertisement:
err_code = ble_advdata_set(&advdata, NULL);

Please, could you tell me what i can used now?

Best regards,
Juan

RE: Problem stopping ADC and restart again

Jørgen Holmefjord — Tue, 31 Jul 2018 09:36:15 GMT

Those are softdevice versions. You can't simply download a new softdevice and replace the old, this will give you a lot of compilation errors.

As you can see from the compatibility matrix, softdevice 2.0.0-7.alpha was supported by SDK v11.0.0-2.alpha, while softdevice v6.0.0 is supported by SDK 15.0.0 (softdevice v6.1.0 is still not supported by the SDK). I would recommend that you download the latest SDK and start with this instead of the old version. Please have a look at the getting started section in the infocenter.

RE: Problem stopping ADC and restart again

Juan Moya — Tue, 31 Jul 2018 09:18:32 GMT

Hello Jørgen,

I am using 2.0.0-7.alpha. In the Nordic Semiconductors web I downlad the s132_nrf52_6.1.0_API.

I would like to update it in my project, but when I modify the files the project launch more than 50 errors in the compilation.

Is this normal?

Thanks in advance.

Juan

RE: Problem stopping ADC and restart again

Jørgen Holmefjord — Mon, 30 Jul 2018 14:26:36 GMT

Please answer my other questions as well:

Where are you calling the uninit function?
Which SDK version are you using?

Have you tried calling nrf_drv_saadc_abort before uninit, to make sure no sample/conversion is in progress? You should also make sure you set the symbol DEBUG_NRF, to enable the ASSERT that checks if the timeout is reached without the STOPPED event being received.

RE: Problem stopping ADC and restart again

Juan Moya — Mon, 30 Jul 2018 06:26:45 GMT

Hello Jørgen,

If I don't do the delay then I can no restart the ADC.

#define NRF_DRV_SAADC_LULABYTES_CHANNEL_CONFIG_SE(PIN_P) \
{                                                      \
    .resistor_p = NRF_SAADC_RESISTOR_DISABLED,         \
    .resistor_n = NRF_SAADC_RESISTOR_DISABLED,         \
    .gain       = NRF_SAADC_GAIN1_4,                   \
    .reference = NRF_SAADC_REFERENCE_INTERNAL,        \
    .acq_time   = NRF_SAADC_ACQTIME_10US,              \
    .mode       = NRF_SAADC_MODE_SINGLE_ENDED,         \
    .pin_p      = (nrf_saadc_input_t)(PIN_P),          \
    .pin_n      = NRF_SAADC_INPUT_DISABLED             \
}

void saadc_init(void){
       ret_code_t err_code;

       //
       adc_stat = 0x00;
        nrf_saadc_channel_config_t channel_config = NRF_DRV_SAADC_LULABYTES_CHANNEL_CONFIG_SE(NRF_SAADC_INPUT_AIN4);           // NEW VERSION

    err_code = nrf_drv_saadc_init(NULL, saadc_callback);
    APP_ERROR_CHECK(err_code);

    err_code = nrf_drv_saadc_channel_init(0, &channel_config);
    APP_ERROR_CHECK(err_code);

    err_code = nrf_drv_saadc_buffer_convert(m_buffer, SAMPLES_IN_BUFFER);
    APP_ERROR_CHECK(err_code);

}

Best regards,

Juan

RE: Problem stopping ADC and restart again

Jørgen Holmefjord — Fri, 27 Jul 2018 13:44:59 GMT

Hi,

You should not need any delay before uninitializing the SAADC. What is the issue when you do not add the delay?

Where are you calling the uninit function? Please post some code showing what you are trying to do, and how you have configured the SAADC.

Which SDK version are you using?

Best regards,
Jørgen