{"id":910749,"date":"2023-01-03T14:06:47","date_gmt":"2023-01-03T22:06:47","guid":{"rendered":"https:\/\/www.microsoft.com\/en-us\/research\/"},"modified":"2023-07-29T10:02:28","modified_gmt":"2023-07-29T17:02:28","slug":"jacdac-service-based-prototyping-of-embedded-systems","status":"publish","type":"msr-research-item","link":"https:\/\/www.microsoft.com\/en-us\/research\/publication\/jacdac-service-based-prototyping-of-embedded-systems\/","title":{"rendered":"Jacdac: Service-based Prototyping of Embedded Systems"},"content":{"rendered":"<div>\n<div>\u00a0 \u00a0The traditional approach to programming embedded systems is monolithic: firmware on a microcontroller contains both application code and the drivers needed to communicate with sensors and actuators, using low-level protocols such as I2C, SPI and RS232. In comparison, software development for the cloud has moved to a service-based development and operation paradigm: a service provides a discrete unit of functionality that can be accessed remotely by an application program, or other service, but independently managed and updated.<\/div>\n<div><\/div>\n<div>\u00a0 \u00a0We propose, design, implement and evaluate a service-based approach to prototyping embedded systems called Jacdac. With Jacdac, each sensor\/actuator in a system is paired with a low-cost microcontroller that advertises the services that represent the functionality of the underlying hardware over an efficient and low-cost wire protocol (bus). A separate microcontroller executes the user&#8217;s application program, which is a client of the Jacdac services on the bus.<\/div>\n<div><\/div>\n<div>\u00a0 \u00a0Our evaluation shows that Jacdac supports a service-based abstraction for sensors\/actuators at low cost and reasonable performance, with many benefits for prototyping: ease of use via the automated discovery of devices and their capabilities, substitution of same-service devices for each other, as well as high-level programming, monitoring, and debugging. We also report on the experience of bringing Jacdac to commercial availability via a third-party manufacturer.<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 \u00a0The traditional approach to programming embedded systems is monolithic: firmware on a microcontroller contains both application code and the drivers needed to communicate with sensors and actuators, using low-level protocols such as I2C, SPI and RS232. In comparison, software development for the cloud has moved to a service-based development and operation paradigm: a service 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