/********************************************************************* * SEGGER Microcontroller GmbH * * The Embedded Experts * ********************************************************************** * * * (c) 1995 - 2024 SEGGER Microcontroller GmbH * * * * www.segger.com Support: support@segger.com * * * ********************************************************************** * * * SEGGER SystemView * Real-time application analysis * * * ********************************************************************** * * * All rights reserved. * * * * SEGGER strongly recommends to not make any changes * * to or modify the source code of this software in order to stay * * compatible with the SystemView and RTT protocol, and J-Link. * * * * Redistribution and use in source and binary forms, with or * * without modification, are permitted provided that the following * * condition is met: * * * * o Redistributions of source code must retain the above copyright * * notice, this condition and the following disclaimer. * * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * * DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR * * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT * * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * * DAMAGE. * * * ********************************************************************** * * * SystemView version: 3.60a * * * ********************************************************************** -------------------------- END-OF-HEADER ----------------------------- File : SEGGER_SYSVIEW_Config_FreeRTOS.c Purpose : Sample setup configuration of SystemView with FreeRTOS. Revision: $Rev: 7745 $ */ #include "FreeRTOS.h" #include "SEGGER_SYSVIEW.h" extern const SEGGER_SYSVIEW_OS_API SYSVIEW_X_OS_TraceAPI; extern unsigned int SEGGER_SYSVIEW_TickCnt; /********************************************************************* * * Defines, fixed * ********************************************************************** */ #define SCB_ICSR (*(volatile U32*) (0xE000ED04uL)) // Interrupt Control State Register #define SCB_ICSR_PENDSTSET_MASK (1UL << 26) // SysTick pending bit #define SYST_RVR (*(volatile U32*) (0xE000E014uL)) // SysTick Reload Value Register #define SYST_CVR (*(volatile U32*) (0xE000E018uL)) // SysTick Current Value Register /********************************************************************* * * Defines, configurable * ********************************************************************** */ // The application name to be displayed in SystemViewer #define SYSVIEW_APP_NAME "FreeRTOS Demo Application" // The target device name #define SYSVIEW_DEVICE_NAME "Cortex-M0" // Frequency of the timestamp. Must match SEGGER_SYSVIEW_GET_TIMESTAMP in SEGGER_SYSVIEW_Conf.h #define SYSVIEW_TIMESTAMP_FREQ (configSYSTICK_CLOCK_HZ) // System Frequency. SystemcoreClock is used in most CMSIS compatible projects. #define SYSVIEW_CPU_FREQ configCPU_CLOCK_HZ // The lowest RAM address used for IDs (pointers) #define SYSVIEW_RAM_BASE (0x20000000) // Define as 1 if the Cortex-M cycle counter is used as SystemView timestamp. Must match SEGGER_SYSVIEW_Conf.h #ifndef USE_CYCCNT_TIMESTAMP #define USE_CYCCNT_TIMESTAMP 1 #endif // Define as 1 if the Cortex-M cycle counter is used and there might be no debugger attached while recording. #ifndef ENABLE_DWT_CYCCNT #define ENABLE_DWT_CYCCNT (USE_CYCCNT_TIMESTAMP & SEGGER_SYSVIEW_POST_MORTEM_MODE) #endif /********************************************************************* * * Defines, fixed * ********************************************************************** */ #define DEMCR (*(volatile unsigned long*) (0xE000EDFCuL)) // Debug Exception and Monitor Control Register #define TRACEENA_BIT (1uL << 24) // Trace enable bit #define DWT_CTRL (*(volatile unsigned long*) (0xE0001000uL)) // DWT Control Register #define NOCYCCNT_BIT (1uL << 25) // Cycle counter support bit #define CYCCNTENA_BIT (1uL << 0) // Cycle counter enable bit /********************************************************************* * * _cbSendSystemDesc() * * Function description * Sends SystemView description strings. */ static void _cbSendSystemDesc(void) { SEGGER_SYSVIEW_SendSysDesc("N="SYSVIEW_APP_NAME",D="SYSVIEW_DEVICE_NAME",O=FreeRTOS"); SEGGER_SYSVIEW_SendSysDesc("I#15=SysTick"); } /********************************************************************* * * Global functions * ********************************************************************** */ void SEGGER_SYSVIEW_Conf(void) { #if USE_CYCCNT_TIMESTAMP #if ENABLE_DWT_CYCCNT // // If no debugger is connected, the DWT must be enabled by the application // if ((DEMCR & TRACEENA_BIT) == 0) { DEMCR |= TRACEENA_BIT; } #endif // // The cycle counter must be activated in order // to use time related functions. // if ((DWT_CTRL & NOCYCCNT_BIT) == 0) { // Cycle counter supported? if ((DWT_CTRL & CYCCNTENA_BIT) == 0) { // Cycle counter not enabled? DWT_CTRL |= CYCCNTENA_BIT; // Enable Cycle counter } } #endif SEGGER_SYSVIEW_Init(SYSVIEW_TIMESTAMP_FREQ, SYSVIEW_CPU_FREQ, &SYSVIEW_X_OS_TraceAPI, _cbSendSystemDesc); SEGGER_SYSVIEW_SetRAMBase(SYSVIEW_RAM_BASE); } /********************************************************************* * * SEGGER_SYSVIEW_X_GetTimestamp() * * Function description * Returns the current timestamp in ticks using the system tick * count and the SysTick counter. * All parameters of the SysTick have to be known and are set via * configuration defines on top of the file. * * Return value * The current timestamp. * * Additional information * SEGGER_SYSVIEW_X_GetTimestamp is always called when interrupts are * disabled. Therefore locking here is not required. */ U32 SEGGER_SYSVIEW_X_GetTimestamp(void) { #if USE_CYCCNT_TIMESTAMP U32 TickCount; U32 Cycles; U32 CyclesPerTick; // // Get the cycles of the current system tick. // SysTick is down-counting, subtract the current value from the number of cycles per tick. // CyclesPerTick = SYST_RVR + 1; Cycles = (CyclesPerTick - SYST_CVR); // // Get the system tick count. // TickCount = SEGGER_SYSVIEW_TickCnt; // // If a SysTick interrupt is pending, re-read timer and adjust result // if ((SCB_ICSR & SCB_ICSR_PENDSTSET_MASK) != 0) { Cycles = (CyclesPerTick - SYST_CVR); TickCount++; } Cycles += TickCount * CyclesPerTick; return Cycles; #endif } /*************************** End of file ****************************/