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Porting turbo vision embedded arm9/23/2023 ![]() ![]() The Debug Port can be used to configure transactions and read or write to one or more Access Ports ( AP). This is quite nice because it means reading state ( memory, registers, etc) over the DAP is pretty much the same operation regardless of the ARM MCU being used. The specification defines a set of Debug Port Registers that can be accessed to perform operations on the chip as well as the pinout a MCU needs to expose so external debuggers can attach to it. The DAP is an implementation of the ARM Debug Interface Architecture Specification 2. In this article we will explore the functionality of the DAP. This can be used to stream out data & instruction accesses while a system is running. A subsystem that allows for traceability known as the Arm Embedded Trace Macrocell ( ETM).The subsystem used for debug, initial silicon validation, & system bringup known as the Debug Access Port ( DAP).This architecture is broken into several major components. The ARM Debugger StackĪll Cortex-M’s implement a framework known as the Coresight architecture 1. Like Interrupt? Subscribe to get our latest posts straight to your mailbox. ![]()
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