Super loop Context ● You are developing an embedded application using one or more members of the 8051 family of microcontroller. ● You are designing an appropriate software foundation for your application. Problem What is the minimum software environment you need to create an embedded C program? Background — Solution One key difference between embedded […]
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A rudimentary software architecture:Project header
Project header Context ● You are developing an embedded application using one or more members of the 8051 family of microcontrollers. ● You are designing an appropriate software foundation for your application. Problem How do you group together all the information relating to the hardware platform used in your project? Background — Solution As we […]
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EMR DRIVER
EMR DRIVER Context ● You are developing an embedded application using one or more members of the 8051 family of microcontrollers. ● You are designing an appropriate hardware foundation for your application. Problem How do you ‘switch on’ or ‘switch off’ a piece of high-power (AC) electrical equipment using a microcontroller? Solution We consider in […]
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SSR DRIVER (AC)
SSR DRIVER (AC) Context ● You are developing an embedded application using one or more members of the 8051 family of microcontrollers. ● You are designing an appropriate hardware foundation for your application. Problem How do you ‘switch on’ or ‘switch off’ a piece of mains-powered (AC) electrical equip- ment using a microcontroller? Background We […]
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A rudimentary software architecture
Introduction In the first pattern in this chapter we consider the minimum software environment required to create a typical embedded application: this environment is called SUPER LOOP [page 162]. Please note that we will use Super Loop in this book primarily to allow us to illus- trate some introductory software patterns in Chapters 10, 11 […]
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Driving AC loads
Introduction Consider some problems: ● A pump in a domestic or industrial heating system must be switched on and off at preset times. ● A series of high-intensity lights around the perimeter of a factory complex are to be activated in the event of a security incident. ● An electrical heater in a brewery must […]
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SSR DRIVER (DC)
SSR DRIVER (DC) Context ● You are developing an embedded application using one or more members of the 8051 family of microcontrollers. ● You are designing an appropriate hardware foundation for your application. Problem How do you ‘switch on’ or ‘switch off’ a piece of high-voltage (DC) electrical equip- ment using a microcontroller? Background A […]
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IC DRIVER
IC DRIVER Context ● You are developing an embedded application using one or more members of the 8051 family of microcontrollers. ● You are designing an appropriate hardware foundation for your application. Problem How do you safely control multiple, medium-power DC loads from a single micro- controller port? Background See IC BUFFER [page 118] for […]
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MOSFET DRIVER
MOSFET DRIVER Context ● You are developing an embedded application using one or more members of the 8051 family of microcontrollers. ● You are designing an appropriate hardware foundation for your application. Problem How do you control a DC load with high current requirements (up to around 100A) using a microcontroller? Background In BJT DRIVER […]
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NAKED LED
NAKED LED Context ● You are developing an embedded application using one or more members of the 8051 family of microcontrollers. ● You are designing an appropriate hardware foundation for your application. Problem What is the cheapest way of driving a small number of LEDs with a microcontroller? Background Even in the most basic application, […]
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