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

134 lines
4.6 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 step activity interrupt status */
uint16_t int_status = 0;
/* Structure to hold orientation configuration */
struct bma456mm_orientation_config orient;
struct bma456mm_out_state out_state;
/* 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);
/* Enable orientation feature */
rslt = bma456mm_feature_enable(BMA456MM_ORIENT, 1, &bma);
bma4_error_codes_print_result("bma456mm_feature_enable status", rslt);
orient.upside_down = 0x01;
orient.mode = 0x02;
orient.blocking = 0x01;
orient.theta = 0x33;
orient.hysteresis = 0x80;
rslt = bma456mm_set_orientation_config(&orient, &bma);
bma4_error_codes_print_result("bma456mm_set_orientation_config status", rslt);
if (rslt == BMA4_OK)
{
/* Map the interrupt 1 for tap detection */
rslt = bma456mm_map_interrupt(BMA4_INTR1_MAP, BMA456MM_ORIENT_INT, BMA4_ENABLE, &bma);
bma4_error_codes_print_result("bma456mm_map_interrupt status", rslt);
if (rslt == BMA4_OK)
{
printf("Move the board to detect orientation\n");
for (;;)
{
int_status = 0;
/* Read interrupt status */
rslt = bma456mm_read_int_status(&int_status, &bma);
bma4_error_codes_print_result("bma456mm_read_int_status", rslt);
/* Filtering only the activity interrupt */
if ((rslt == BMA4_OK) && (int_status & BMA456MM_ORIENT_INT))
{
printf("\nOrientation interrupt occurred\n");
rslt = bma456mm_output_state(&out_state, &bma);
bma4_error_codes_print_result("bma456mm_orientation_output", rslt);
printf("The Orientation output is %d\n", out_state.orientation_out);
printf("The Orientation faceup/down output is %d\n", out_state.orientation_faceup_down);
switch (out_state.orientation_faceup_down)
{
case BMA456MM_FACE_UP:
printf("\nOrientation state is face up\n");
break;
case BMA456MM_FACE_DOWN:
printf("\nOrientation state is face down\n");
break;
default:
break;
}
switch (out_state.orientation_out)
{
case BMA456MM_LANDSCAPE_LEFT:
printf("\nOrientation state is landscape left\n\n");
break;
case BMA456MM_LANDSCAPE_RIGHT:
printf("\nOrientation state is landscape right\n\n");
break;
case BMA456MM_PORTRAIT_UP_DOWN:
printf("\nOrientation state is portrait upside down\n\n");
break;
case BMA456MM_PORTRAIT_UP_RIGHT:
printf("\nOrientation state is portrait upright\n\n");
break;
default:
break;
}
break;
}
}
}
}
bma4_coines_deinit();
return rslt;
}