110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/**************************************************************************//**
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* @file
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* @brief SWO Trace API (for eAProfiler)
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* @author Energy Micro AS
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* @version 2.0.1
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******************************************************************************
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* @section License
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* <b>(C) Copyright 2012 Energy Micro AS, http://www.energymicro.com</b>
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*******************************************************************************
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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* 4. The source and compiled code may only be used on Energy Micro "EFM32"
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* microcontrollers and "EFR4" radios.
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*
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* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
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* obligation to support this Software. Energy Micro AS is providing the
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* Software "AS IS", with no express or implied warranties of any kind,
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* including, but not limited to, any implied warranties of merchantability
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* or fitness for any particular purpose or warranties against infringement
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* of any proprietary rights of a third party.
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*
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* Energy Micro AS will not be liable for any consequential, incidental, or
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* special damages, or any other relief, or for any claim by any third party,
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* arising from your use of this Software.
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*
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*****************************************************************************/
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#ifndef __TRACE_H
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#define __TRACE_H
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/***************************************************************************//**
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* @addtogroup BSP
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* @{
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******************************************************************************/
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#include <stdint.h>
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#include <stdbool.h>
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#include "em_msc.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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void TRACE_SWOSetup(void);
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bool TRACE_ProfilerSetup(void);
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#define USER_PAGE 0x0FE00000UL
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/**************************************************************************//**
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* @brief Set or clear word in user page which enables or disables SWO
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* in TRACE_ProfilerSetup. If TRACE_ProfilerEnable(false) has been run,
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* no example project will enable SWO trace.
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* @param[in] enable
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* @note Add "em_msc.c" to build to use this function.
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*****************************************************************************/
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__STATIC_INLINE void TRACE_ProfilerEnable(bool enable)
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{
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uint32_t data;
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volatile uint32_t *userpage = (uint32_t *) USER_PAGE;
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/* Check that configuration needs to change */
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data = *userpage;
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if(enable)
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{
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if(data == 0xFFFFFFFF)
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{
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return;
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}
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}
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else
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{
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if(data == 0x00000000)
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{
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return;
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}
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}
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/* Initialize MSC */
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MSC_Init();
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/* Write enble or disable trigger word into flash */
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if(enable)
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{
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data = 0xFFFFFFFF;
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MSC_ErasePage((uint32_t *)USER_PAGE);
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MSC_WriteWord((uint32_t *)USER_PAGE, (void *) &data, 4);
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}
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else
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{
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data = 0x00000000;
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MSC_ErasePage((uint32_t *)USER_PAGE);
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MSC_WriteWord((uint32_t *)USER_PAGE, (void *) &data, 4);
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}
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}
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#ifdef __cplusplus
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}
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#endif
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/** @} (end group BSP) */
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#endif
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