Serial Wire Output (SWO) viewer for tracing purposes. Tested on F401 and ST-LINK Utility as well as for F103 and Segger J-Link SWO viewer.
Dependents: WiFi_Scanner mbed_nucleo_swo DISCO-F429ZI_LCDTS_demo_richard TEST_SM_SPEED
SWO.h
- Committer:
- wim
- Date:
- 2014-12-21
- Revision:
- 2:ef928f61a770
- Parent:
- 1:bae4cff278f6
- Child:
- 3:e5af2e131b95
File content as of revision 2:ef928f61a770:
/* mbed SWO Library * Copyright (c) 2014, v01: WH. Ported from Segger example * * Simple implementation for tracing via Serial Wire Output(SWO) for Cortex-M processors. * It can be used with Host PC software such as ST-LINK Utility or Segger J-Link SWO viewer. * This sample implementation ensures that output via SWO is enabled in order to guarantee * that the application does not hang. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #ifndef MBED_SWO_H #define MBED_SWO_H /** * @code * #include "mbed.h" * #include "SWO.h" * * DigitalOut myled(LED1); * * Serial pc(SERIAL_TX, SERIAL_RX); * * int main() { * pc.printf("Hello World\n\r"); * * SWO_PrintString("\r\nHello World from SWO\r\n"); * char message[64]; * sprintf(message, "CPU SystemCoreClock is %d Hz\r\n", SystemCoreClock); * SWO_PrintString(message); * * while(1) { * myled = 1; // LED is ON * wait(0.2); // 200 ms * myled = 0; // LED is OFF * wait(1.0); // 1 sec * * SWO_PrintString("#"); * } * } * @endcode */ // Prototypes /** * @brief * Checks if SWO is set up. If it is not, return, * to avoid program hangs if no debugger is connected. * If it is set up, print a character to the ITM_STIM register * in order to provide data for SWO. * @param c The Character to be printed. * @notes Additional checks for device specific registers can be added. */ void SWO_PrintChar (char c); /** * * SWO_PrintString() * * @brief Print a string via SWO. * @param *s The string to be printed. */ void SWO_PrintString(const char *s); #endif