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 ?= tap.c
+
+API_LOCATION ?= ../..
+
+COMMON_LOCATION ?= ..
+
+C_SRCS += \
+$(API_LOCATION)/bma4.c \
+$(API_LOCATION)/bma456_tablet.c \
+$(COMMON_LOCATION)/common/common.c
+
+INCLUDEPATHS += \
+$(API_LOCATION) \
+$(COMMON_LOCATION)/common
+
+include $(COINES_INSTALL_PATH)/coines.mk
@@ -0,0 +1,127 @@
+/**\
+ * 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"
+
+/******************************************************************************/
+/*!            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 tap interrupt status */
+    uint16_t int_status = 0;
+
+    /* Loop variable */
+    uint8_t loop = 10;
+
+    struct bma456_tablet_tap_output tap_out = { 0 };
+    struct bma456_tablet_tap_settings settings = { 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_SPI_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);
+
+    if (rslt == BMA4_OK)
+    {
+        /* Map the interrupt pin 1 for tap detection */
+        rslt = bma456_tablet_map_interrupt(BMA4_INTR1_MAP, BMA456_TABLET_TAP_OUT_INT, BMA4_ENABLE, &bma);
+        bma4_error_codes_print_result("bma456_tablet_map_interrupt status", rslt);
+
+        if (rslt == BMA4_OK)
+        {
+            /* Enabling the single, double and triple tap features */
+            rslt =
+                bma456_tablet_feature_enable(
+                    (BMA456_TABLET_SINGLE_TAP | BMA456_TABLET_DOUBLE_TAP | BMA456_TABLET_TRIPLE_TAP),
+                    BMA4_ENABLE,
+                    &bma);
+            bma4_error_codes_print_result("bma456_tablet_feature_enable status", rslt);
+
+            if (rslt == BMA4_OK)
+            {
+                /* Getting tap parameters settings */
+                rslt = bma456_tablet_tap_get_parameter(&settings, &bma);
+                bma4_error_codes_print_result("bma456_tablet_tap_get_parameter status", rslt);
+            }
+        }
+
+        if (rslt == BMA4_OK)
+        {
+            printf("Tap the board either single, double or triple tap\n");
+
+            while (loop > 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 tap interrupt */
+                if ((rslt == BMA4_OK) && (int_status & BMA456_TABLET_TAP_OUT_INT))
+                {
+                    rslt = bma456_tablet_tap_output(&tap_out, &bma);
+
+                    if (BMA4_OK == rslt)
+                    {
+                        /* Enters only if the obtained interrupt is single-tap */
+                        if (tap_out.s_tap)
+                        {
+                            printf("Single Tap interrupt occurred\n");
+                        }
+                        /* Enters only if the obtained interrupt is double-tap */
+                        else if (tap_out.d_tap)
+                        {
+                            printf("Double Tap interrupt occurred\n");
+                        }
+                        /* Enters only if the obtained interrupt is triple-tap */
+                        else if (tap_out.t_tap)
+                        {
+                            printf("Triple Tap interrupt occurred\n");
+                        }
+
+                        loop--;
+                    }
+
+                    int_status = 0;
+                }
+            }
+
+            /* Break out of the loop when iteration has reached zero */
+            if (loop == 0)
+            {
+                printf("Iterations are done. Exiting !\n\n");
+            }
+        }
+    }
+
+    bma4_coines_deinit();
+
+    return rslt;
+}