/**\ * Copyright (c) 2022 Bosch Sensortec GmbH. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause **/ #include #include "bma456w.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 counter interrupt status */ uint16_t int_status = 0; /* Variable to store step counter status */ uint32_t step_out = 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 = bma456w_init(&bma); bma4_error_codes_print_result("bma456w_init status", rslt); /* Upload the configuration file to enable the features of the sensor. */ rslt = bma456w_write_config_file(&bma); bma4_error_codes_print_result("bma456w_write_config status", rslt); /* Enable accelerometer to perform feature testing */ rslt = bma4_set_accel_enable(BMA4_ENABLE, &bma); bma4_error_codes_print_result("bma4_set_accel_enable status", rslt); rslt = bma456w_feature_enable(BMA456W_STEP_CNTR, BMA4_ENABLE, &bma); bma4_error_codes_print_result("bma456w_feature_enable status", rslt); rslt = bma456w_map_interrupt(BMA4_INTR1_MAP, BMA456W_STEP_CNTR_INT, BMA4_ENABLE, &bma); bma4_error_codes_print_result("bma456w_map_interrupt status", rslt); /* Setting watermark level 1, the output step resolution is 20 steps. * Eg: 1 means, 1 * 20 = 20. Every 20 steps once output triggers */ rslt = bma456w_step_counter_set_watermark(1, &bma); bma4_error_codes_print_result("bma456w_step_counter_set_watermark status", rslt); printf("Step counter feature is enabled\n"); printf("Step counter watermark level is 1 (Output resolution is 20 steps)\n"); printf("Move the board in steps for greater than 3 seconds\n"); /* Loop over until step counter interrupt occurs */ for (;;) { /* Read the interrupt status (After 20 steps, generates interrupt) */ rslt = bma456w_read_int_status(&int_status, &bma); bma4_error_codes_print_result("bma456w_read_int_status", rslt); if ((BMA4_OK == rslt) && (int_status & BMA456W_STEP_CNTR_INT)) { printf("Step counter interrupt received when watermark level is reached (20 steps)\n"); /* Get the step counter output after reset */ rslt = bma456w_step_counter_output(&step_out, &bma); bma4_error_codes_print_result("bma456w_step_counter_output status", rslt); break; } } printf("The step counter output is %lu \n", (long unsigned int)step_out); bma4_coines_deinit(); return rslt; }