tpiu.h

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#pragma once
#include <stdbool.h>
#include <stdint.h>
 
#if !defined(TPI)
#    error \
        "TPI not defined. Include tpiu.h AFTER core_cmX.h (typically after including device-specific header)"
#endif
 
#ifdef __cplusplus
extern "C"
{
#endif
 
    typedef enum
    {
        TpiuProtocolParallel = 0,
 
        TpiuProtocolSwoManchester = 1,
 
        TpiuProtocolSwoUart = 2,
    } TpiuProtocol;
 
    typedef struct
    {
        TpiuProtocol Protocol;
 
        bool FormattingEnabled;
 
        int SwoPrescaler;
 
        uint8_t TracePortWidth;
    } TpiuOptions;
 
    static inline void TpiuSetup(const TpiuOptions* options);
 
    void TpiuSetup(const TpiuOptions* options)
    {
        CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk; // Enable ITM and DWT
 
        TPI->ACPR = options->SwoPrescaler - 1;
        TPI->SPPR = (int)options->Protocol;
        TPI->CSPSR = 1 << (options->TracePortWidth - 1);
 
        if(options->FormattingEnabled)
        {
            TPI->FFCR |= TPI_FFCR_EnFCont_Msk;
        }
        else
        {
            TPI->FFCR &= ~TPI_FFCR_EnFCont_Msk;
        }
    }
 
#ifdef __cplusplus
}
#endif