106 lines
5.1 KiB
C
106 lines
5.1 KiB
C
/*********************************************************************
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* SEGGER Microcontroller GmbH *
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* The Embedded Experts *
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**********************************************************************
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* *
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* (c) 1995 - 2021 SEGGER Microcontroller GmbH *
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* *
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* www.segger.com Support: support@segger.com *
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* *
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**********************************************************************
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* *
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* SEGGER SystemView * Real-time application analysis *
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* *
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**********************************************************************
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* *
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* All rights reserved. *
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* *
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* SEGGER strongly recommends to not make any changes *
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* to or modify the source code of this software in order to stay *
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* compatible with the SystemView and RTT protocol, and J-Link. *
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* *
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* Redistribution and use in source and binary forms, with or *
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* without modification, are permitted provided that the following *
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* condition is met: *
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* *
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* o Redistributions of source code must retain the above copyright *
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* notice, this condition and the following disclaimer. *
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* *
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND *
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, *
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF *
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE *
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* DISCLAIMED. IN NO EVENT SHALL SEGGER Microcontroller BE LIABLE FOR *
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR *
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT *
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; *
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE *
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH *
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* DAMAGE. *
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* *
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**********************************************************************
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* *
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* SystemView version: 3.30 *
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* *
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**********************************************************************
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--------- END-OF-HEADER --------------------------------------------
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File : Main_RTT_SpeedTestApp.c
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Purpose : Sample program for measuring RTT performance.
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*/
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#include "RTOS.h"
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#include "BSP.h"
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#include "SEGGER_RTT.h"
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#include <stdio.h>
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OS_STACKPTR int StackHP[128], StackLP[128]; /* Task stacks */
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OS_TASK TCBHP, TCBLP; /* Task-control-blocks */
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static void HPTask(void) {
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while (1) {
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//
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// Measure time needed for RTT output
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// Perform dummy write with 0 characters, so we know the overhead of toggling LEDs and RTT in general
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//
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// Set BP here. Then start sampling on scope
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BSP_ClrLED(0);
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SEGGER_RTT_Write(0, 0, 0);
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BSP_SetLED(0);
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BSP_ClrLED(0);
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SEGGER_RTT_Write(0, "01234567890123456789012345678901234567890123456789012345678901234567890123456789\r\n", 82);
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BSP_SetLED(0);
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// Set BP here. Then stop sampling on scope
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OS_Delay(200);
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}
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}
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static void LPTask(void) {
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while (1) {
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BSP_ToggleLED(1);
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OS_Delay (500);
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}
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}
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/*********************************************************************
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*
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* main
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*
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*********************************************************************/
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int main(void) {
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OS_IncDI(); /* Initially disable interrupts */
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OS_InitKern(); /* Initialize OS */
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OS_InitHW(); /* Initialize Hardware for OS */
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BSP_Init(); /* Initialize LED ports */
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BSP_SetLED(0);
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/* You need to create at least one task before calling OS_Start() */
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OS_CREATETASK(&TCBHP, "HP Task", HPTask, 100, StackHP);
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OS_CREATETASK(&TCBLP, "LP Task", LPTask, 50, StackLP);
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OS_Start(); /* Start multitasking */
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return 0;
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}
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