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ARM Cortex-M0 assembly programming tips and tricks

The snippets in this document are no real secrets, your C-compiler probably use them already. But if you’re writing assembly-code, it’s good to have some snippets ready, when you need them.   Substitution for conditional instruction execution   The Cortex-M0 and Cortex-M0+ only have conditional execution of branch instructions. -But sometimes you need code, which takes just as many clock …

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Inter-Integrated Circuit (I2C)

History During the 1980s, Philips developed the two wire inter-integrated circuit (I2C ) bus to provide an easy way to connect peripherals to a central processing unit (CPU/ MCU) in TV applications. As the circuit became more and more complex with the number of peripherals connections increasing, a method was needed to simplify the design and reduce costs. By limiting …

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AC And DC Circuit Theory

DC Circuits Direct Current or D.C.(more commonly referred) is a voltage or current that flows in unidirectional way in a circuit. It has a fixed amplitude(magnitude) and a specific direction associated with it.  For example +5V represents 5 volts in positive direction and -3.3V represents 3.3V in negative direction. Common sources of DC currents and voltages are produced by power …

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