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
parent 755bdd92d7
commit e5db0b21c7
168 changed files with 42062 additions and 2 deletions
@@ -0,0 +1,18 @@
+COINES_INSTALL_PATH ?= ../../../..
+
+EXAMPLE_FILE ?= no_motion.c
+
+API_LOCATION ?= ../..
+
+COMMON_LOCATION ?= ..
+
+C_SRCS += \
+$(API_LOCATION)/bma4.c \
+$(API_LOCATION)/bma456_an.c \
+$(COMMON_LOCATION)/common/common.c
+
+INCLUDEPATHS += \
+$(API_LOCATION) \
+$(COMMON_LOCATION)/common
+
+include $(COINES_INSTALL_PATH)/coines.mk
@@ -0,0 +1,131 @@
+/**\
+ * Copyright (c) 2022 Bosch Sensortec GmbH. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ **/
+
+#include <stdio.h>
+#include "bma456_an.h"
+#include "common.h"
+
+/******************************************************************************/
+/*!           Static Function Declaration                                     */
+
+/*!
+ *  @brief This internal API is used to get no-motion configurations.
+ *
+ *  @param[in] bma       : Structure instance of bma4_dev.
+ *
+ *  @return Status of execution.
+ */
+static int8_t get_any_no_mot_config(struct bma4_dev *bma);
+
+/******************************************************************************/
+/*!            Functions                                                      */
+
+/* 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 any/no-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 = bma456_an_init(&bma);
+    bma4_error_codes_print_result("bma456_an_init status", rslt);
+
+    /* Upload the configuration file to enable the features of the sensor. */
+    rslt = bma456_an_write_config_file(&bma);
+    bma4_error_codes_print_result("bma456_an_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);
+
+    /* Map the interrupt 1 for no-motion */
+    rslt = bma456_an_map_interrupt(BMA4_INTR1_MAP, BMA456_AN_NO_MOT_INT, BMA4_ENABLE, &bma);
+    bma4_error_codes_print_result("bma456_an_map_interrupt status", rslt);
+
+    /* Get no-motion configurations */
+    rslt = get_any_no_mot_config(&bma);
+    bma4_error_codes_print_result("get_any_no_mot_config status", rslt);
+
+    printf("Do not shake the board for no-motion interrupt\n");
+
+    for (;;)
+    {
+        /* Read interrupt status */
+        rslt = bma456_an_read_int_status(&int_status, &bma);
+        bma4_error_codes_print_result("bma456_an_read_int_status", rslt);
+
+        if (rslt == BMA4_OK)
+        {
+            /* Enters only if the obtained interrupt is no-motion */
+            if (int_status & BMA456_AN_NO_MOT_INT)
+            {
+                printf("No-motion interrupt occurred\n");
+                break;
+            }
+        }
+    }
+
+    bma4_coines_deinit();
+
+    return rslt;
+}
+
+/*!
+ *  @brief This internal API is used to get any/no-motion configurations.
+ */
+static int8_t get_any_no_mot_config(struct bma4_dev *bma)
+{
+    /* Variable to store the status of API */
+    int8_t rslt;
+
+    /* Structure to define any/no-motion configurations */
+    struct bma456_an_any_no_mot_config any_no_mot = { 0 };
+
+    /* Getting no-motion configuration to get default configuration */
+    rslt = bma456_an_get_no_mot_config(&any_no_mot, bma);
+    bma4_error_codes_print_result("bma456_an_get_no_mot_config status", rslt);
+
+    if (rslt == BMA4_OK)
+    {
+        /*
+         * Set the slope threshold:
+         *  Interrupt will be generated if the slope of all the axis exceeds the threshold (1 bit = 0.48mG)
+         */
+        any_no_mot.threshold = 10;
+
+        /*
+         * Set the duration for no-motion interrupt:
+         * Duration defines the number of consecutive data points for which threshold condition must be
+         * true(1 bit = 20ms)
+         */
+        any_no_mot.duration = 4;
+
+        /* Enabling X, Y, and Z axis for no-motion feature */
+        any_no_mot.axes_en = BMA456_AN_EN_ALL_AXIS;
+
+        /* Like threshold and duration, we can also change the config of int_bhvr */
+
+        /* Set the threshold and duration configuration */
+        rslt = bma456_an_set_no_mot_config(&any_no_mot, bma);
+        bma4_error_codes_print_result("bma456_an_set_no_mot_config status", rslt);
+    }
+
+    return rslt;
+}