ELECTRONIC DEVICE AND METHODS OF IMPLEMENTING THE 1-WIRE PROTOCOL USING AN INTERRUPT

摘要

A method of reading data from a peripheral device (126) via a 1-Wire interface (128) using a GPIO pin (202) connected to an interrupt pin (204) on a signal processor (108) comprises initialising the GPIO pin (202) as an input and initiating an interrupt timer in response to identifying an interrupt event. The method further comprises monitoring the timer to identify a start-bit interface (128) once the start-bit time (404) has been reached. A method of writing data on such a 1-wire interface and an electronic device comprising the 1-wire interface are also described. In this manner, by provision of a GPIO pin coupled to an interrupt pin (say an