![]() Table 1 summarizes the motion sensors that are available on the Android platform. These data values are returned in a float array ![]() For example, during a single sensor event the accelerometer returnsĪcceleration force data for the three coordinate axes, and the gyroscope returns rate of rotationĭata for the three coordinate axes. Motion sensors by themselves are not typically used to monitorĭevice position, but they can be used with other sensors, such as the geomagnetic field sensor, toĭetermine a device's position relative to the world's frame of reference (see Position Sensors for moreĪll of the motion sensors return multi-dimensional arrays of sensor values for each SensorEvent. Or your application's frame of reference in the second case you are monitoring motion relative to In the first case, you are monitoring motion relative to the device's frame of reference Physical environment in which the device is sitting (for example, moving with you while you drive The movement is usually a reflection of direct user input (for example, a user steering aĬar in a game or a user controlling a ball in a game), but it can also be a reflection of the Motion sensors are useful for monitoring device movement, such as tilt, shake, rotation, or Depending on the device, these software-based sensors can derive theirĭata either from the accelerometer and magnetometer or from the gyroscope. Variable because they often rely on one or more hardware sensors to derive theirĭata. The availability of the software-based sensors is more Most Android-powered devices have an accelerometer, and many now include a The accelerometer and gyroscope sensors are always hardware-based. The gravity, linear acceleration, rotation vector, significant motion, stepĬounter, and step detector sensors are either hardware-based or The sensors' possible architectures vary by sensor type: Android platform provides several sensors that let you monitor the motion HAL_GPIO_Init(CS_A_GPIO_Port, &GPIO_InitStruct) HAL_GPIO_Init(CS_P_GPIO_Port, &GPIO_InitStruct) GPIO_InitStruct.Pin = CS_AG_Pin|BLUE_CS_Pin|CS_M_Pin *Configure GPIO pins : CS_AG_Pin BLUE_CS_Pin CS_M_Pin */ HAL_GPIO_Init(BLUE_RST_GPIO_Port, &GPIO_InitStruct) HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct) GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP ![]() ![]() HAL_GPIO_WritePin(CS_A_GPIO_Port, CS_A_Pin, GPIO_PIN_SET) HAL_GPIO_WritePin(CS_P_GPIO_Port, CS_P_Pin, GPIO_PIN_SET) HAL_GPIO_WritePin(GPIOB, CS_AG_Pin|BLUE_CS_Pin|CS_M_Pin, GPIO_PIN_SET) HAL_GPIO_WritePin(BLUE_RST_GPIO_Port, BLUE_RST_Pin, GPIO_PIN_SET) HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET) I was able to use 4 wire SPI with STM32F407 and LSM6DSM, but I still face issues with using 3 Wire mode with STM32F407 and LSM6DSM even though using the c command lsm6dsm_spi_mode_set(&dev_ctx, LSM6DSM_AUX_SPI_3_WIRE) I'm getting no response on spi read, so the program is getting struck at lsm6dsm_reset_get(&dev_ctx, &rst). I pulled 4 CS lines to high at the beginning of the program and have set the SPI2 to Half duplex master mode with low data transfer rate. I have recently brought a STEVAL-STLKT01V1 SensorTile kit in which LSM6DSM, LSM303AGR & LPS22HB are connected in 3 wire SPI on the SPI2 line of STM32L476. ![]()
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