Texas Instruments Corporation

Kangcheng Xu

Jun Zhang

Rujun Ji

Lichang Cheng

Chao Gao

Xiaodong Li

Yicheng Zhou

Shuai He

An example apparatus includes a counter, an analog-to-digital converter, communication circuitry, and control circuitry configurable. The example analog-to-digital converter is configurable to sample a first voltage at a first node on a bus. The example communication circuitry is configurable to set a second node on the bus to a second voltage. Additionally, the example control circuitry is configurable to increment the counter when the first voltage does not satisfy a threshold value and, when the first voltage satisfies the threshold value, assign an address for the device based on a value of the counter.

Methods, apparatus, and articles of manufacture to address devices coupled to a network bus

Various examples disclosed herein relate to current sensing via current sensing circuitry, and more particularly, to calibrating current sensing circuitry to dynamically detect current ranges across a load. In an example embodiment, a microcontroller unit (MCU) is provided herein that includes a processor and current sensing circuitry coupled to the processor. The current sensing circuitry of the MCU is configured to measure voltages associated with a load. The processor of the MCU is configured to obtain the measured voltages from the current sensing circuitry, identify a temperature drift of the current sensing circuitry that exceeds a threshold value, update parameters with which to determine a current associated with the load based on the temperature drift, and determine the current associated with the load based on the updated parameters and the measured voltages.

Calibration of circuitry parameters for current sensing

Methods and apparatus to determine a position of a rotatable shaft of a motor are disclosed. An example apparatus to determine a position of a rotatable shaft of a motor includes a sensor printed circuit board (PCB) structured to be mounted to a motor, the sensor PCB including a plurality of capacitive sensors, the plurality of capacitive sensors having respective ones of a plurality of capacitances that independently change as a conductor moves relative to the sensor PCB in conjunction with a rotatable shaft of the motor during an operation of the motor, and a controller electrically coupled to the sensor PCB, the controller configured to determine a position of the rotatable shaft based on the plurality of capacitances.

Methods and apparatus to determine a position of a rotatable shaft of a motor

A capacitive touch sensing device, with: (i) a logical array of capacitive buttons have a number R of rows and a number C of columns; (ii) a first node coupled to a first column in the number C of columns, the first node for receiving a first transmit voltage; (iii) a second node coupled to a second column in the number C of columns, the second node for receiving a second transmit voltage; (iv) a number of intermediate nodes between the first node and the second node, wherein each intermediate node is coupled to a respective column in the number C of columns; and (v) circuitry for applying a respective different voltage to each of the intermediate nodes in response to the first transmit voltage and the second transmit voltage.

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Shanghai, China

Kangcheng Xu