Acceleraton sensor with nrf52DK

[Nats]

Hello,

Im trying to interface LIS3DH with nRF52DK referring this example https://devzone.nordicsemi.com/f/nordic-q-a/34710/lis2dh12-driver-issue-in-nrf-sdk-v15-0.

Im getting the following result, the control doesnt enter "print_identity " function and the results are as follows,

Can you help me find out how to read the values of acceleration with this code and interpret the value read?

Fullscreen main.c Download

/**
 * Copyright (c) 2015 - 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.
 * 
 */
/** @file
 * @defgroup tw_sensor_example main.c
 * @{
 * @ingroup nrf_twi_example
 * @brief TWI Sensor Example main file.
 *
 * This file contains the source code for a sample application using TWI.
 *
 */




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

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

#include "lis2dh12.h"

#include "nrf_twi_mngr.h"

/* TWI instance ID. */
#define TWI_INSTANCE_ID             0

#define MAX_PENDING_TRANSACTIONS    33

#define LIS2DH12_MIN_QUEUE_SIZE     32




NRF_TWI_MNGR_DEF(m_nrf_twi_mngr, MAX_PENDING_TRANSACTIONS, TWI_INSTANCE_ID);

NRF_TWI_SENSOR_DEF(m_nrf_twi_sensor, &m_nrf_twi_mngr, LIS2DH12_MIN_QUEUE_SIZE);

LIS2DH12_INSTANCE_DEF(m_lis2dh12, &m_nrf_twi_sensor, LIS2DH12_BASE_ADDRESS_LOW);

static uint8_t m_sample = 0;

void print_identity(ret_code_t r, void *p_register_data)
{
    NRF_LOG_INFO("Identity: %d", *((uint8_t *)p_register_data));
}

/**
 * @brief Function for main application entry.
 */
int main(void)
{
    uint32_t err;

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


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

    NRF_LOG_INFO("TWI sensor example started.");
    NRF_LOG_FLUSH();

    err = nrf_twi_mngr_init(&m_nrf_twi_mngr, &config);
    APP_ERROR_CHECK(err);

    err = nrf_twi_sensor_init(&m_nrf_twi_sensor);
    APP_ERROR_CHECK(err);

    err = lis2dh12_init(&m_lis2dh12);
    APP_ERROR_CHECK(err);

    NRF_LOG_FLUSH();
    APP_ERROR_CHECK(err);
 
    while (true)
    {
        nrf_delay_ms(500);
         NRF_LOG_INFO("Here3.");
        err = lis2dh12_who_am_i_read(&m_lis2dh12, print_identity, &m_sample);
        APP_ERROR_CHECK(err);
        NRF_LOG_FLUSH();
    }
}

Fullscreen lis2dh12.c Download

/**
 * Copyright (c) 2017 - 2019, 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 "lis2dh12.h"

#define RETURN_IF_ERR(err)  \
    if (err != NRF_SUCCESS) \
    {                       \
        return err;         \
    }

ret_code_t lis2dh12_init(lis2dh12_instance_t * p_inst)
{
    ASSERT(p_inst != NULL);
    memset(&p_inst->temp_cfg, 0, &p_inst->act_dur - &p_inst->temp_cfg);
    p_inst->ctrl0     = LIS2DH12_CTRL_REG0_VALID_SET;
    p_inst->ctrl1     = 0x07;
    p_inst->ctrl4     = 0x80;

    return lis2dh12_cfg_commit(p_inst);
}

ret_code_t lis2dh12_cfg_commit(lis2dh12_instance_t * p_inst)
{
    ASSERT(p_inst != NULL);
    ret_code_t err;
    p_inst->ctrl0 &= ~LIS2DH12_CTRL_REG0_VALID_MASK;
    p_inst->ctrl0 |= LIS2DH12_CTRL_REG0_VALID_SET;

    uint8_t ctrl_msg[] = {
        LIS2DH12_REG_CTRL_REG0 | LIS2DH12_AUTO_INCR_MASK,
        p_inst->ctrl0,
        p_inst->temp_cfg,
        p_inst->ctrl1,
        p_inst->ctrl2,
        p_inst->ctrl3,
        p_inst->ctrl4,
        p_inst->ctrl5,
        p_inst->ctrl6,
        p_inst->reference
    };
    err = nrf_twi_sensor_write(p_inst->p_sensor_data,
                               p_inst->sensor_addr,
                               ctrl_msg,
                               ARRAY_SIZE(ctrl_msg),
                               true);
    RETURN_IF_ERR(err);
    uint8_t fifo_msg[] = {
        LIS2DH12_REG_FIFO_CTRL | LIS2DH12_AUTO_INCR_MASK,
        p_inst->fifo_ctrl,
        0,
        p_inst->int1_cfg,
        0,
        p_inst->int1_ths,
        p_inst->int1_dur,
        p_inst->int2_cfg,
        0,
        p_inst->int2_ths,
        p_inst->int2_dur,
        p_inst->click_cfg
    };
    err = nrf_twi_sensor_write(p_inst->p_sensor_data,
                               p_inst->sensor_addr,
                               fifo_msg,
                               ARRAY_SIZE(fifo_msg),
                               true);
    RETURN_IF_ERR(err);

    uint8_t time_msg[] = {
        LIS2DH12_REG_CLICK_THS | LIS2DH12_AUTO_INCR_MASK,
        p_inst->click_ths,
        p_inst->time_lim,
        p_inst->latency,
        p_inst->time_win,
        p_inst->act_ths,
        p_inst->act_dur
    };
    err = nrf_twi_sensor_write(p_inst->p_sensor_data,
                               p_inst->sensor_addr,
                               time_msg,
                               ARRAY_SIZE(time_msg),
                               true);
    return err;
}

ret_code_t lis2dh12_data_read(lis2dh12_instance_t * p_inst,
                              lis2dh12_data_cb_t    user_cb,
                              lis2dh12_data_t *     p_data,
                              uint8_t               samples)
{
    ASSERT(p_inst != NULL);
    return nrf_twi_sensor_reg_read(p_inst->p_sensor_data,
                                   p_inst->sensor_addr,
                                   LIS2DH12_REG_OUT_X_L | LIS2DH12_AUTO_INCR_MASK,
                                   (nrf_twi_sensor_reg_cb_t) user_cb,
                                   (uint8_t *) p_data,
                                   samples * LIS2DH12_BYTES_PER_SAMPLE);
}

ret_code_t lis2dh12_temp_enable(lis2dh12_instance_t * p_inst, bool temp_en)
{
    ASSERT(p_inst != NULL);
    if (temp_en == true)
    {
        NRF_TWI_SENSOR_REG_SET(p_inst->temp_cfg, LIS2DH12_TEMP_EN_MASK, LIS2DH12_TEMP_EN_POS, 3);
    }
    else
    {
        NRF_TWI_SENSOR_REG_SET(p_inst->temp_cfg, LIS2DH12_TEMP_EN_MASK, LIS2DH12_TEMP_EN_POS, 0);
    }

    uint8_t send_msg[] = {
        LIS2DH12_REG_TEMP_CFG_REG,
        p_inst->temp_cfg
    };

    return nrf_twi_sensor_write(p_inst->p_sensor_data,
                                p_inst->sensor_addr,
                                send_msg,
                                ARRAY_SIZE(send_msg),
                                true);

}

ret_code_t lis2dh12_temp_read(lis2dh12_instance_t * p_inst,
                              lis2dh12_temp_cb_t    user_cb,
                              int16_t *             p_temp)
{
    ASSERT(p_inst != NULL);
    return nrf_twi_sensor_reg_read(p_inst->p_sensor_data,
                                   p_inst->sensor_addr,
                                   LIS2DH12_REG_OUT_TEMP_L | LIS2DH12_AUTO_INCR_MASK,
                                   (nrf_twi_sensor_reg_cb_t) user_cb,
                                   (uint8_t *) p_temp,
                                   LIS2DH12_BYTES_PER_TEMP);
}

lis2dh12.h

[Jørgen Holmefjord]

Did you call nrf_twi_mngr_init() in main()? Are you checking all error codes returned from the function calls?

[Nats]

Yes, i am. You can have look at the code that i have shared.

[Jørgen Holmefjord]

Can you check if you see the handler being called with the project I tested? twi_sensor_custom_jh.zip

[Nats]

Hello Jorgen,

Thank you so much. It is working now. i am able to read the who_am_i register.

Im trying to read the x, y, and z axis. i dont need any interrupt as such.

i have made the following additions, Can you have a look, and guide me , where im going wrong,

1. Config settings,

2. Defined a structure 

I have attached the project for your reference.

twi_sensor_custom_jh_Rev1.zip

Im getting the below error.

[Jørgen Holmefjord]

I'm not getting any hardfaults, but I believe you get this since you have defined m_sample as a pointer and not a variable, then you pass the reference to the pointer to lis2dh12_data_read(). The compiler outputs a warning about this. You should always check and fix compilation warnings, not only errors.