send data from msp430

RE: send data from msp430

Kaito — Tue, 03 Oct 2017 15:45:27 GMT

I solved this problem by deleting the part of if (data_array [index - 1] == '\ n')! ! Thank you for various advice! ! regards!!

RE: send data from msp430

Kaito — Tue, 03 Oct 2017 05:22:15 GMT

i tried it! but i didn't solve the problem. i saw the uart part and I could confirm that the data is coming. so i thought that problems are occurring while sending data from nRF 52832 to the mobile phone. regards!

RE: send data from msp430

Kaito — Mon, 02 Oct 2017 14:25:01 GMT

thank you for your reply! next day, i will try it! thank you!!

RE: send data from msp430

Sigurd — Mon, 02 Oct 2017 14:12:50 GMT

Yes, that is correct.

RE: send data from msp430

Kaito — Mon, 02 Oct 2017 14:05:48 GMT

thank you for your reply! i understood! i wanna send data from nRF52832 to phone! so i think i change the uart_event_handle! Is my thinking right?? regards!!

RE: send data from msp430

Sigurd — Mon, 02 Oct 2017 13:51:41 GMT

The nus_data_handler() will by default just take the data you send from the phone to the nRF5x, and output this data over the UART(using the DK connected to a PC, it will output this data to a terminal program, e.g. Termite or Putty).

RE: send data from msp430

Kaito — Mon, 02 Oct 2017 13:47:44 GMT

thank you for your reply! i see! if that,Shouldn't i change the contents of nus_data_handler? ragards!

RE: send data from msp430

Sigurd — Mon, 02 Oct 2017 13:30:25 GMT

By default, the uart_event_handle() function should already have the ble_nus_string_send() function. You dont need to add it again.

By default the function looks like this:

void uart_event_handle(app_uart_evt_t *p_event)
{
    static uint8_t data_array[BLE_NUS_MAX_DATA_LEN];
    static uint8_t index = 0;
    uint32_t       err_code;

    switch (p_event->evt_type)
    {
        case APP_UART_DATA_READY:
            UNUSED_VARIABLE(app_uart_get(&data_array[index]));
            index++;

            if ((data_array[index - 1] == '\n') || (index >= (m_ble_nus_max_data_len)))
            {
                NRF_LOG_DEBUG("Ready to send data over BLE NUS");
                NRF_LOG_HEXDUMP_DEBUG(data_array, index);

                do
                {
                    uint16_t length = (uint16_t)index;
                    err_code        = ble_nus_string_send(&m_nus, data_array, &length);
                    if ((err_code != NRF_ERROR_INVALID_STATE) && (err_code != NRF_ERROR_BUSY))
                    {
                        APP_ERROR_CHECK(err_code);
                    }
                } while (err_code == NRF_ERROR_BUSY);

                index = 0;
            }
            break;

        case APP_UART_COMMUNICATION_ERROR:
            APP_ERROR_HANDLER(p_event->data.error_communication);
            break;

        case APP_UART_FIFO_ERROR:
            APP_ERROR_HANDLER(p_event->data.error_code);
            break;

        default:
            break;
    }
}

RE: send data from msp430

Kaito — Mon, 02 Oct 2017 13:27:50 GMT

Oh i see!! if that,should Should I add ble_nus_string_data function in uart_event_handler ()? regards!

RE: send data from msp430

Sigurd — Mon, 02 Oct 2017 13:25:02 GMT

Ok, then you should instead change the function uart_event_handle(). This is the function that receive the external data over UART, and then it will sent it over BLE to the phone/central.

RE: send data from msp430

Kaito — Mon, 02 Oct 2017 13:20:22 GMT

thank you for your reply! I am planning to create a program to send external data to iphone by changing nus_data_handler () program!! if (p_evt-> params.rx_data.p_data [p_evt-> params.rx_data.length - 1] == '\ r') Do you send data all the time if you insert the ble_nus_string_send function in the while statement in the above if statement? regards!

RE: send data from msp430

Sigurd — Mon, 02 Oct 2017 13:10:40 GMT

You are sending data back over BLE in the nus_data_handler? The function looks by default like this:

static void nus_data_handler(ble_nus_evt_t *p_evt)
{
    if (p_evt->type == BLE_NUS_EVT_RX_DATA)
    {
        uint32_t err_code;

        NRF_LOG_DEBUG("Received data from BLE NUS. Writing data on UART.");
        NRF_LOG_HEXDUMP_DEBUG(p_evt->params.rx_data.p_data, p_evt->params.rx_data.length);

        for (uint32_t i = 0; i < p_evt->params.rx_data.length; i++)
        {
            do
            {
                err_code = app_uart_put(p_evt->params.rx_data.p_data[i]);
                if ((err_code != NRF_SUCCESS) && (err_code != NRF_ERROR_BUSY))
                {
                    NRF_LOG_ERROR("Failed receiving NUS message. Error 0x%x. ", err_code);
                    APP_ERROR_CHECK(err_code);
                }
            } while (err_code == NRF_ERROR_BUSY);
        }
        if (p_evt->params.rx_data.p_data[p_evt->params.rx_data.length - 1] == '\r')
        {
            while (app_uart_put('\n') == NRF_ERROR_BUSY);
        }
    }
}

What are you trying to achieve by changing the nus_data_handler() function ?

RE: send data from msp430

Sigurd — Mon, 02 Oct 2017 13:06:03 GMT

Yes, in uart_init() make sure that you have APP_UART_FLOW_CONTROL_DISABLED.

RE: send data from msp430

Kaito — Sat, 30 Sep 2017 04:06:32 GMT

i tried the debugging,but i didn't know where change. The point I changed is the following source code. gyazo.com/613e72f4b57cf278136df2b2efe76197 If you change this way, the connection will be lost even if the test data came.

now I am controlling without flow control. Do I have to adjust clocks?

Please tell me if someone understands this problem!!! I found that this problem occurs when data is being transmitted. When data transmission is interrupted, ble becomes connectable, and blank data was transmitted when connecting. Do I have to add processing like interrupt handling when sending data on the program?

regards!!

RE: send data from msp430

Sigurd — Thu, 28 Sep 2017 09:12:05 GMT

Are you using the latest version of the nRF-Toolbox app?

Have you tried debugging the nRF52, and see if you run into the error handler? See this post on how to do debugging.

RE: send data from msp430

Kaito — Thu, 28 Sep 2017 07:02:38 GMT

Yes When i used iphone and Android, it happened the same situation.

now i try to control without flow control. Do you need to change the source code if perhaps without flow control?

RE: send data from msp430

Sigurd — Tue, 26 Sep 2017 10:25:31 GMT

Do you get the same message on the Android phone ? i.e. "The connection has timed out unexpectedly" ?

RE: send data from msp430

Kaito — Tue, 26 Sep 2017 10:12:49 GMT

thank you for your reply! i modified the source code. but the data is only send for 4 times. and android phone is same situation. the picture of program source is shown in below gyazo.com/52b786169db095a92d23b8f05cc5a051

Regards!!

RE: send data from msp430

Sigurd — Tue, 26 Sep 2017 09:35:42 GMT

According to these post here and here , this could be caused by hardware issues with BLE on the iPhone 6.

A workaround is to set your LFCLK accuracy to 250ppm. For SDK 14, this is done in sdk_config.h like this:

Let me know if this solves the problem for you.

RE: send data from msp430

Kaito — Tue, 26 Sep 2017 09:25:15 GMT

thank you for your reply! ・I am using MSP 430 on UART connection. ・i am using the nRF52832-DK. ・i am using 14.0.0 version. ・i am using iphone 6s

Regards!!

RE: send data from msp430

Sigurd — Tue, 26 Sep 2017 08:48:38 GMT

Hi,

How are you using the msp430?
Are you using the nRF52832? If so, is that a custom board or a nRF52-DK ?
What SDK version are you using?
What kind of smartphone are you using?