Trace Port Interface Unit

Configure how trace data is transmitted from MCU. More...

Classes
struct	TpiuOptions
	TPIU configuration options. More...

Enumerations
enum	TpiuProtocol { TpiuProtocolParallel = 0 , TpiuProtocolSwoManchester = 1 , TpiuProtocolSwoUart = 2 }
	Available trace protocols. More...

Functions
static void	TpiuSetup (const TpiuOptions *options)
	Configure TPIU component. More...

Detailed Description

Configure how trace data is transmitted from MCU.

Trace Port Interface Unit (TPIU) is responsible for outputing data received from ITM and ETM using one of configured trace protocols (TpiuProtocol).

Reference: ARMv7-M Architecture Reference Manual, chapter C1.10

Enumeration Type Documentation

TpiuProtocol

enum TpiuProtocol

Available trace protocols.

Enumerator
TpiuProtocolParallel	Parallel trace port 1-4 bits Use tool like Orbtrace to receive data. Good for transmitting lots of information (e.g. ETM trace)
TpiuProtocolSwoManchester	Manchester encoded data Use tool like Orbtrace to receive data. Single pin, lower bandwitdh, speed automatically detected.
TpiuProtocolSwoUart	UART (NRZ) encoded data Use any UART adapter to receive data. Single pin, easy to access, low bandwidth. Receiver baudrate must match.

Function Documentation

TpiuSetup()

void TpiuSetup ( const TpiuOptions *  options )

inlinestatic

Configure TPIU component.

After calling this function TPIU will be configured as specified in options.

Note that there is no validation if specified configuration is valid (e.g. specified protocol is not valid) and there are no checks to verify MCU capabilities (e.g. specifing more trace bits line than supported)

Parameters

options

TPIU configuration