RE: Want to send static data in Serial Program

hkarthik97 — Mon, 29 Jul 2019 16:28:40 GMT

It worked now actually i kept a delay and executed the code

RE: Want to send static data in Serial Program

awneil — Mon, 29 Jul 2019 13:43:20 GMT

So what debugging have you done to find why it works with 'tx_message', but not with 'k' ?

Are you sure that your terminal doesn't depend on there being a CR and/or LF on the end?

RE: Want to send static data in Serial Program

hkarthik97 — Mon, 29 Jul 2019 13:37:53 GMT

    static char tx_message[] = "Hello nrf_serial!\n\r";
    static char k[] = "jio";

    ret = nrf_serial_write(&serial_uart,
                           k,
                           strlen(k),
                           NULL,
                           NRF_SERIAL_MAX_TIMEOUT);
    APP_ERROR_CHECK(ret);

No this part is not working I tried

RE: Want to send static data in Serial Program

awneil — Mon, 29 Jul 2019 10:12:08 GMT

So it's not static data, then - is it?

But you have the code right here:

    ret = nrf_serial_write( &serial_uart,
                            tx_message,
                            strlen(tx_message),
                            NULL,
                            NRF_SERIAL_MAX_TIMEOUT) ;
    APP_ERROR_CHECK(ret);

The nrf_serial_write() function just sends data - it neither knows nor cares where that data comes from, nor whether it is "static" or not.

You just give it a pointer to (the start of) the data you want to send, and tell it the length of that data.

Simples!

RE: Want to send static data in Serial Program

hkarthik97 — Mon, 29 Jul 2019 10:04:42 GMT

This is the process that i want to do .

I got the sensor data i want to send this data to ESP8266 how should i do that

RE: Want to send static data in Serial Program

awneil — Mon, 29 Jul 2019 09:42:27 GMT

Still confused!

Your code shows that you do have a static string:

    static char tx_message[] = "Hello nrf_serial!\n\r";

and your terminal screenshot seems to show that you can send it!

So I'm still unclear what the actual problem is!

BTW

Note that it is usual to have the Carriage Return (CR) first - ie, "\r\n" - giving CRLF

RE: Want to send static data in Serial Program

hkarthik97 — Mon, 29 Jul 2019 09:37:13 GMT

/**
 * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>

#include "nrf.h"
#include "nrf_drv_clock.h"
#include "nrf_gpio.h"
#include "nrf_delay.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_drv_power.h"
#include "nrf_serial.h"
#include "app_timer.h"


#include "app_error.h"
#include "app_util.h"
#include "boards.h"

/** @file
 * @defgroup nrf_serial_example main.c
 * @{
 * @ingroup nrf_serial_example
 * @brief Example of @ref nrf_serial usage. Simple loopback.
 *
 */

#define OP_QUEUES_SIZE          3
#define APP_TIMER_PRESCALER     NRF_SERIAL_APP_TIMER_PRESCALER

static void sleep_handler(void)
{
    __WFE();
    __SEV();
    __WFE();
}

NRF_SERIAL_DRV_UART_CONFIG_DEF(m_uart0_drv_config,
                      RX_PIN_NUMBER, TX_PIN_NUMBER,
                      RTS_PIN_NUMBER, CTS_PIN_NUMBER,
                      NRF_UART_HWFC_ENABLED, NRF_UART_PARITY_EXCLUDED,
                      NRF_UART_BAUDRATE_115200,
                      UART_DEFAULT_CONFIG_IRQ_PRIORITY);

#define SERIAL_FIFO_TX_SIZE 32
#define SERIAL_FIFO_RX_SIZE 32

NRF_SERIAL_QUEUES_DEF(serial_queues, SERIAL_FIFO_TX_SIZE, SERIAL_FIFO_RX_SIZE);


#define SERIAL_BUFF_TX_SIZE 1
#define SERIAL_BUFF_RX_SIZE 1

NRF_SERIAL_BUFFERS_DEF(serial_buffs, SERIAL_BUFF_TX_SIZE, SERIAL_BUFF_RX_SIZE);

NRF_SERIAL_CONFIG_DEF(serial_config, NRF_SERIAL_MODE_IRQ,
                      &serial_queues, &serial_buffs, NULL, sleep_handler);


NRF_SERIAL_UART_DEF(serial_uart, 0);

int main(void)
{
    ret_code_t ret;

    ret = nrf_drv_clock_init();
    APP_ERROR_CHECK(ret);
    ret = nrf_drv_power_init(NULL);
    APP_ERROR_CHECK(ret);

    nrf_drv_clock_lfclk_request(NULL);
    ret = app_timer_init();
    APP_ERROR_CHECK(ret);

    // Initialize LEDs and buttons.
    bsp_board_init(BSP_INIT_LEDS | BSP_INIT_BUTTONS);

    ret = nrf_serial_init(&serial_uart, &m_uart0_drv_config, &serial_config);
    APP_ERROR_CHECK(ret);

    static char tx_message[] = "Hello nrf_serial!\n\r";

    ret = nrf_serial_write(&serial_uart,
                           tx_message,
                           strlen(tx_message),
                           NULL,
                           NRF_SERIAL_MAX_TIMEOUT);
    APP_ERROR_CHECK(ret);

    while (true)
    {
        char c,d;
        ret = nrf_serial_read(&serial_uart, &c, sizeof(c), NULL, 1000);
        if (ret != NRF_SUCCESS)
        {
            continue;
        }
        (void)nrf_serial_write(&serial_uart, &c, sizeof(c), NULL, 0);
        (void)nrf_serial_flush(&serial_uart, 0);

    }
}

/** @} */

This is my code i am able to send the data from nrf52 dk to esp8266 through the serial monitor

In the above image I sent a string from nrf52 to esp8266 through the serial monitor .

I want to declare a static string and keep on sending it to esp8266.

Eg:

I am connecting a temperature sensor to nrf52 dk and I am sending the temperature data to esp8266 so that i can store it in cloud .

RE: Want to send static data in Serial Program

awneil — Mon, 29 Jul 2019 09:20:12 GMT

[quote userid="77477" url="~/f/nordic-q-a/50350/want-to-send-static-data-in-serial-program"]I want to send static data from nrf52 to esp8266. [/quote]

I don't understand what you mean by that!

What have you tried?

Where are you stuck?