Abstract: A CAN microcontroller that supports a plurality of message objects, including a processor core that runs CAN applications, and a CAN/CAL module that processes incoming messages, and a data memory. The data memory includes a first memory segment that provides a plurality of message buffers associated with respective ones of the message objects, and a second memory segment that provides a plurality of memory-mapped registers for each of the message objects. The memory-mapped registers for each message object contain respective command/control fields for configuration and setup of that message object.

Abstract: A CAN microcontroller that supports a plurality of message objects, including a processor core that runs CAN applications, and a CAN/CAL module that processes incoming messages, and a data memory. The data memory includes a first memory segment that provides a plurality of message buffers associated with respective ones of the message objects, and a second memory segment that provides a plurality of memory-mapped registers for each of the message objects. The memory-mapped registers for each message object contain respective command/control fields for configuration and setup of that message object.

Abstract: A system and method for monitoring a garage door position from a remote location. A local sensor detects the position of a garage door and provides this information to a local transmitter. The transmitter is capable of generating a signal indicating the garage door position, where the signal can be detected by a remote receiver. In one embodiment, infrared sensors are used to detect the garage door position, while in another embodiment trigger switches detect the direction in which the garage door is moving.

Abstract: A system and method for monitoring a garage door position from a remote location. A local sensor detects the position of a garage door and provides this information to a local transmitter. The transmitter is capable of generating a signal indicating the garage door position, where the signal can be detected by a remote receiver. In one embodiment, infrared sensors are used to detect the garage door position, while in another embodiment trigger switches detect the direction in which the garage door is moving.

Abstract: A system and method for monitoring a garage door position from a remote location. A local sensor detects the position of a garage door and provides this information to a local transmitter. The transmitter is capable of generating a signal indicating the garage door position, where the signal can be detected by a remote receiver. In one embodiment, infrared sensors are used to detect the garage door position, while in another embodiment trigger switches detect the direction in which the garage door is moving.

Abstract: A high pass filter is provided utilizing a digital filter with coefficients that can be switched to provide for two responses, a fast response and a slow response. A first response is provided by an accumulator block (38) disposed between the output and a summing junction (30) on the input of the digital filter. A multiplexer (40) selects between this accumulator block (38) and a slow response accumulator block (42). The switching is effected with a zero crossing detect circuit (26). When the first and faster response brings the DC level down to a value that is close to zero, the second and slower response is selected to basically lock it to zero.