Low-level algorithm for a software-emulated I2C I/O module in general purpose RISC-V based microcontrollers

Roberto Molina-Robles; Ronny Garcia-Ramirez; Alfonso Chacon-Rodriguez; Renato Rimolo-Donadio; Alfredo Arnaud

doi:10.1109/URUCON53396.2021.9647309

Low-level algorithm for a software-emulated I²C I/O module in general purpose RISC-V based microcontrollers

Escuela de Ingeniería Electrónica

Universidad Católica del Uruguay

Producción científica: Capítulo del libro/informe/acta de congreso › Contribución a la conferencia › revisión exhaustiva

1 Cita (Scopus)

Resumen

To date, I2C is a protocol that has a lot of use on microcontroller applications. Implementing the hardware for a I2C controller affects directly chip size, cost and time development in VLSI projects. To save on these aspects, we have used hardware emulation by software to recreate the I2C behavior through GPIO ports in a RISC-V microcontroller of our own. This paper proposes a flexible and practical low-level algorithm that replaces a physical I2C controller, to be able connect an I2C peripheral device to its driver code inside the microcontroller using GPIO ports as channels. An explanation of the application is described, along with the code structure and the logic behind the algorithm. At the end, this paper presents results with a brief analysis of its benefits and future improvements.

Idioma original	Inglés
Título de la publicación alojada	2021 IEEE URUCON, URUCON 2021
Editorial	Institute of Electrical and Electronics Engineers Inc.
Páginas	90-94
Número de páginas	5
ISBN (versión digital)	9781665424431
DOI	https://doi.org/10.1109/URUCON53396.2021.9647309
Estado	Publicada - 2021
Evento	2021 IEEE URUCON, URUCON 2021 - Montevideo, Uruguay Duración: 24 nov 2021 → 26 nov 2021

Serie de la publicación

Nombre	2021 IEEE URUCON, URUCON 2021

Conferencia

Conferencia	2021 IEEE URUCON, URUCON 2021
País/Territorio	Uruguay
Ciudad	Montevideo
Período	24/11/21 → 26/11/21

ODS de las Naciones Unidas

Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible

ODS 7: Energía asequible y no contaminante

Acceder al documento

10.1109/URUCON53396.2021.9647309

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Molina-Robles, R., Garcia-Ramirez, R., Chacon-Rodriguez, A., Rimolo-Donadio, R., & Arnaud, A. (2021). Low-level algorithm for a software-emulated I²C I/O module in general purpose RISC-V based microcontrollers. En 2021 IEEE URUCON, URUCON 2021 (pp. 90-94). (2021 IEEE URUCON, URUCON 2021). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/URUCON53396.2021.9647309

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title = "Low-level algorithm for a software-emulated I2C I/O module in general purpose RISC-V based microcontrollers",

abstract = "To date, I2C is a protocol that has a lot of use on microcontroller applications. Implementing the hardware for a I2C controller affects directly chip size, cost and time development in VLSI projects. To save on these aspects, we have used hardware emulation by software to recreate the I2C behavior through GPIO ports in a RISC-V microcontroller of our own. This paper proposes a flexible and practical low-level algorithm that replaces a physical I2C controller, to be able connect an I2C peripheral device to its driver code inside the microcontroller using GPIO ports as channels. An explanation of the application is described, along with the code structure and the logic behind the algorithm. At the end, this paper presents results with a brief analysis of its benefits and future improvements.",

keywords = "algorithms, architecture, hardware emulation, hardware-software applications, I/O protocols, IC bus protocol, microcontroller, RISC-V",

author = "Roberto Molina-Robles and Ronny Garcia-Ramirez and Alfonso Chacon-Rodriguez and Renato Rimolo-Donadio and Alfredo Arnaud",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 IEEE URUCON, URUCON 2021 ; Conference date: 24-11-2021 Through 26-11-2021",

year = "2021",

doi = "10.1109/URUCON53396.2021.9647309",

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Molina-Robles, R , Garcia-Ramirez, R , Chacon-Rodriguez, A , Rimolo-Donadio, R & Arnaud, A 2021, Low-level algorithm for a software-emulated I²C I/O module in general purpose RISC-V based microcontrollers. En 2021 IEEE URUCON, URUCON 2021. 2021 IEEE URUCON, URUCON 2021, Institute of Electrical and Electronics Engineers Inc., pp. 90-94, 2021 IEEE URUCON, URUCON 2021, Montevideo, Uruguay, 24/11/21. https://doi.org/10.1109/URUCON53396.2021.9647309

Low-level algorithm for a software-emulated I²C I/O module in general purpose RISC-V based microcontrollers. / Molina-Robles, Roberto ; Garcia-Ramirez, Ronny ; Chacon-Rodriguez, Alfonso et al.
2021 IEEE URUCON, URUCON 2021. Institute of Electrical and Electronics Engineers Inc., 2021. p. 90-94 (2021 IEEE URUCON, URUCON 2021).

Producción científica: Capítulo del libro/informe/acta de congreso › Contribución a la conferencia › revisión exhaustiva

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T1 - Low-level algorithm for a software-emulated I2C I/O module in general purpose RISC-V based microcontrollers

AU - Molina-Robles, Roberto

AU - Garcia-Ramirez, Ronny

AU - Chacon-Rodriguez, Alfonso

AU - Rimolo-Donadio, Renato

AU - Arnaud, Alfredo

PY - 2021

Y1 - 2021

N2 - To date, I2C is a protocol that has a lot of use on microcontroller applications. Implementing the hardware for a I2C controller affects directly chip size, cost and time development in VLSI projects. To save on these aspects, we have used hardware emulation by software to recreate the I2C behavior through GPIO ports in a RISC-V microcontroller of our own. This paper proposes a flexible and practical low-level algorithm that replaces a physical I2C controller, to be able connect an I2C peripheral device to its driver code inside the microcontroller using GPIO ports as channels. An explanation of the application is described, along with the code structure and the logic behind the algorithm. At the end, this paper presents results with a brief analysis of its benefits and future improvements.

AB - To date, I2C is a protocol that has a lot of use on microcontroller applications. Implementing the hardware for a I2C controller affects directly chip size, cost and time development in VLSI projects. To save on these aspects, we have used hardware emulation by software to recreate the I2C behavior through GPIO ports in a RISC-V microcontroller of our own. This paper proposes a flexible and practical low-level algorithm that replaces a physical I2C controller, to be able connect an I2C peripheral device to its driver code inside the microcontroller using GPIO ports as channels. An explanation of the application is described, along with the code structure and the logic behind the algorithm. At the end, this paper presents results with a brief analysis of its benefits and future improvements.

KW - algorithms

KW - architecture

KW - hardware emulation

KW - hardware-software applications

KW - I/O protocols

KW - IC bus protocol

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