simon e5db0b21c7 Add optional BMA456 accelerometer init on shared I2C bus.
Probe and configure the sensor when present; log and continue boot if
init fails so boards without BMA456 still run normally.

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-05-18 22:51:32 +02:00

85 lines
2.7 KiB
C

/**\
* Copyright (c) 2022 Bosch Sensortec GmbH. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
**/
#include <stdio.h>
#include "bma456mm.h"
#include "common.h"
/******************************************************************************/
/*! Function */
/* This function starts the execution of program. */
int main(void)
{
/* Variable to store the status of API */
int8_t rslt;
/* Sensor initialization configuration */
struct bma4_dev bma = { 0 };
/* Variable to store sig-motion interrupt status */
uint16_t int_status = 0;
/* Interface reference is given as a parameter
* For I2C : BMA4_I2C_INTF
* For SPI : BMA4_SPI_INTF
* Variant information given as parameter - BMA45X_VARIANT
*/
rslt = bma4_interface_init(&bma, BMA4_I2C_INTF, BMA45X_VARIANT);
bma4_error_codes_print_result("bma4_interface_init", rslt);
/* Sensor initialization */
rslt = bma456mm_init(&bma);
bma4_error_codes_print_result("bma456mm_init status", rslt);
/* Upload the configuration file to enable the features of the sensor. */
rslt = bma456mm_write_config_file(&bma);
bma4_error_codes_print_result("bma456mm_write_config status", rslt);
/* Enable the accelerometer */
rslt = bma4_set_accel_enable(BMA4_ENABLE, &bma);
bma4_error_codes_print_result("bma4_set_accel_enable status", rslt);
if (rslt == BMA4_OK)
{
/* Map the interrupt pin 1 for sig-motion */
rslt = bma456mm_map_interrupt(BMA4_INTR1_MAP, BMA456MM_SIG_MOT_INT, BMA4_ENABLE, &bma);
bma4_error_codes_print_result("bma456mm_map_interrupt status", rslt);
if (rslt == BMA4_OK)
{
/* Enabling sig-motion feature */
rslt = bma456mm_feature_enable(BMA456MM_SIG_MOTION, BMA4_ENABLE, &bma);
bma4_error_codes_print_result("bma456mm_feature_enable status", rslt);
}
if (rslt == BMA4_OK)
{
printf("Shake the sensor for greater than 3 sec to detect sig-motion interrupt\n");
for (;;)
{
/* Read the interrupt status */
rslt = bma456mm_read_int_status(&int_status, &bma);
bma4_error_codes_print_result("bma456mm_read_int_status", rslt);
/* Check if sig-motion interrupt is received */
if ((rslt == BMA4_OK) && (int_status & BMA456MM_SIG_MOT_INT))
{
printf("\nReceived Sig-motion interrupt\n");
break;
}
int_status = 0;
}
}
}
bma4_coines_deinit();
return rslt;
}