Acceleraton sensor with nrf52DK

Question

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 
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 /**
 * 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