Embedded Systems Circuits and Programming

Sanchez, Julio; Cantón, María P.

doi:10.1201/b11899

Cited by 2 publications

(4 citation statements)

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“…Multiprocessing using multiple interrupts is used in embedded systems to respond to various changes in real world [7,8]. Multiple ISR processing is illustrated in Fig.…”

Section: Isr Operationmentioning

confidence: 99%

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A Dynamic Control Mechanism of Interrupt Stack Overflow on Real‐Time Embedded Monitor (REMON)

Nankaku

Kawakami

Koizumi

et al. 2015

Elect Comm in Japan

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SUMMARYFor embedded systems, it is important to detect changes in the real world and continuing processing properly. The changes are represented by external interrupts, and proper processes are implemented by nested interrupt service routines (hereafter ISRs). Here, a necessity of mutual exclusion arises. In a software execution environment without any real time OS (hereafter RTOS), a traditional mutual exclusion approach was to disable/enable interrupts in a CPU-specific manner. However, this method typically degrades the real time performance because it defers execution of the mutual-exclusion-free part of the system. Considering this situation, we have been studying a realtime embedded monitor (REMON) which provides a novel mutual exclusion method that can maintain real-time performance without RTOS. For in-service embedded systems, one major runtime fault is ISR stack overflow (SOF). It is extremely difficult to test all conditions where ISRs are called from various external conditions. Note that the ISR stack holds not only data but also program instruction addresses, and consequently a SOF may cause a fatal system error. In summary, ISR SOF is a significant issue, but it has not previously been addressed by REMON. This paper proposes two safety extension methods for embedded systems using REMON. The first method detects ISR overflow and safely stops the system before triggering a systemdown or a malfunction. The second method reallocates the ISR stack and resumes system execution automatically. C⃝ 2015 Wiley Periodicals, Inc. Electron Comm Jpn, 98(3): 57-69, 2015; Published online in Wiley Online Library (wileyonlinelibrary.com).

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“…Multiprocessing using multiple interrupts is used in embedded systems to respond to various changes in real world [7,8]. Multiple ISR processing is illustrated in Fig.…”

Section: Isr Operationmentioning

confidence: 99%

“…But about 30% of embedded systems do not use a real-time OS (RTOS) [4][5][6], and ISRs are used rather than tasks to implement multiprocessing [7,8].…”

Section: Introductionmentioning

confidence: 99%

A Dynamic Control Mechanism of Interrupt Stack Overflow on Real‐Time Embedded Monitor (REMON)

Nankaku

Kawakami

Koizumi

et al. 2015

Elect Comm in Japan

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“…L293D is a dual H-bridge motor driver integrated circuit (IC) [6]. Motor drivers act as current amplifiers since they take a low-current control signal and provide a highercurrent signal.…”

Section: DC Motor Drivers (L293d)mentioning

confidence: 99%

“…LM324 is a 14pin IC consisting of four independent Operational Amplifiers (Op-Amps) compensated in a single package [6]. Op-amps are high gain electronic voltage amplifier with differential input and, usually, a single-ended output.…”

Section: Ldr Driver (Lm324)mentioning

confidence: 99%

Innovative Practices in Optimal Utilization of Solar Energy (Solar Tracking System)

G¹

2015

International Journal of Innovative Research in Electrical, Ele

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Abstract:As the demand is ahead of the supply there is a dire need for efficient and effective utilization of resources. Hence an attempt is made to reduce the utilization of electricity from fossil fuel by optimally utilizing the Solar Energy. Which is achieved by Solar Tracking System. As the Solar Energy is one of the substitutes for fossil fuel, a breakthrough is achieved by adopting an alternative technique which is christened as Solar Tracking System A solar tracker is a device that orients a payload toward the sun. Payloads can be photovoltaic panels, reflectors, lenses or other optical devices. In flat-panel photovoltaic (PV) applications, trackers are used to minimize the angle of incidence between the incoming sunlight and a photovoltaic panel. This increases the amount of energy produced from a fixed amount of installed power generating capacity and reduces the quantity of number of Solar Panels.

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Embedded Systems Circuits and Programming

Cited by 2 publications

References 0 publications

A Dynamic Control Mechanism of Interrupt Stack Overflow on Real‐Time Embedded Monitor (REMON)

A Dynamic Control Mechanism of Interrupt Stack Overflow on Real‐Time Embedded Monitor (REMON)

Innovative Practices in Optimal Utilization of Solar Energy (Solar Tracking System)

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