Jan Buiting
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Debugging Cortex with ARM Keil Development Tools

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Debugging Cortex with ARM Keil Development Tools
When developers first start to use an ARM Cortex-M based microcontroller, they often assume that debug support is provided through a JTAG interface. In fact, while legacy JTAG support is provided the Cortex-M processor family uses ARM’s proprietary debug architecture called CoreSight. JTAG works by taking control of the processor and injecting instructions into the CPU.
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