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Add optional BMA456 accelerometer init on shared I2C bus.

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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>
This commit is contained in:
skruecken
2026-05-18 22:51:32 +02:00
co-authored by Cursor
parent 755bdd92d7
commit e5db0b21c7
168 changed files with 42062 additions and 2 deletions
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components/bma456/bma456_tablet_examples/orientation/orientation.c
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/**\
* Copyright (c) 2023 Bosch Sensortec GmbH. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
**/
#include <stdio.h>
#include "bma456_tablet.h"
#include "common.h"
/******************************************************************************/
/*! Macros */
#define COUNT UINT8_C(5)
/******************************************************************************/
/*! 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;
/* Variable to hold iteration value */
uint8_t loop = 1;
/* Structure to hold orientation configuration */
struct bma456_tablet_orientation_config orient;
uint8_t orientation_out = 0;
uint8_t orientation_faceup_down = 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 = bma456_tablet_init(&bma);
bma4_error_codes_print_result("bma456_tablet_init status", rslt);
/* Upload the configuration file to enable the features of the sensor. */
rslt = bma456_tablet_write_config_file(&bma);
bma4_error_codes_print_result("bma456_tablet_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 = bma456_tablet_feature_enable(BMA456_TABLET_ORIENTATION, 1, &bma);
bma4_error_codes_print_result("bma456_tablet_feature_enable status", rslt);
orient.upside_down = 0x01;
orient.mode = 0x02;
orient.blocking = 0x01;
orient.hold_time = 0x14;
orient.slope_thres = 0xA4;
orient.hysteresis = 0x80;
orient.theta = 0x33;
rslt = bma456_tablet_set_orientation_config(&orient, &bma);
bma4_error_codes_print_result("bma456_tablet_set_orientation_config status", rslt);
if (rslt == BMA4_OK)
{
/* Map the interrupt 1 for orientation detection */
rslt = bma456_tablet_map_interrupt(BMA4_INTR1_MAP, BMA456_TABLET_ORIENTATION_INT, BMA4_ENABLE, &bma);
bma4_error_codes_print_result("bma456_tablet_map_interrupt status", rslt);
if (rslt == BMA4_OK)
{
printf("Move the board to detect orientation\n");
while (loop <= COUNT)
{
int_status = 0;
/* Read interrupt status */
rslt = bma456_tablet_read_int_status(&int_status, &bma);
bma4_error_codes_print_result("bma456_tablet_read_int_status", rslt);
/* Filtering only the orientation interrupt */
if ((rslt == BMA4_OK) && (int_status & BMA456_TABLET_ORIENTATION_INT))
{
printf("\nIteration : %d\n", loop);
rslt = bma456_tablet_orientation_output(&orientation_out, &orientation_faceup_down, &bma);
bma4_error_codes_print_result("bma456_tablet_orientation_output", rslt);
printf("The Orientation output is %d\n", orientation_out);
printf("The Orientation faceup/down output is %d\n", orientation_faceup_down);
switch (orientation_faceup_down)
{
case BMA456_TABLET_FACE_UP:
printf("\nOrientation state is face up\n");
break;
case BMA456_TABLET_FACE_DOWN:
printf("\nOrientation state is face down\n");
break;
default:
break;
}
switch (orientation_out)
{
case BMA456_TABLET_LANDSCAPE_LEFT:
printf("\nOrientation state is landscape left\n\n");
break;
case BMA456_TABLET_LANDSCAPE_RIGHT:
printf("\nOrientation state is landscape right\n\n");
break;
case BMA456_TABLET_PORTRAIT_UP_DOWN:
printf("\nOrientation state is portrait upside down\n\n");
break;
case BMA456_TABLET_PORTRAIT_UP_RIGHT:
printf("\nOrientation state is portrait upright\n\n");
break;
default:
break;
}
loop++;
if (loop > COUNT)
{
break;
}
}
}
}
}
bma4_coines_deinit();
return rslt;
}