Andrea Palmieri / X_NUCLEO_COMMON

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DbgMCU/DbgMCU.h@15:923ab55e8d5d, 2016-02-16 (annotated)

Committer:
apalmieri
Date:
Tue Feb 16 10:01:10 2016 +0000
Revision:
15:923ab55e8d5d
Parent:
1:ca975408dd4e 
Delete useless row

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Wolfgang Betz 1:ca975408dd4e 1 /**
Wolfgang Betz 1:ca975408dd4e 2 ******************************************************************************
Wolfgang Betz 1:ca975408dd4e 3 * @file DbgMCU.h
Wolfgang Betz 1:ca975408dd4e 4 * @author AST / EST
Wolfgang Betz 1:ca975408dd4e 5 * @version V0.0.1
Wolfgang Betz 1:ca975408dd4e 6 * @date 30-March-2015
Wolfgang Betz 1:ca975408dd4e 7 * @brief Header file for enabling debugging in sleep modes for STM32 MCUs
Wolfgang Betz 1:ca975408dd4e 8 ******************************************************************************
Wolfgang Betz 1:ca975408dd4e 9 * @attention
Wolfgang Betz 1:ca975408dd4e 10 *
Wolfgang Betz 1:ca975408dd4e 11 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
Wolfgang Betz 1:ca975408dd4e 12 *
Wolfgang Betz 1:ca975408dd4e 13 * Redistribution and use in source and binary forms, with or without modification,
Wolfgang Betz 1:ca975408dd4e 14 * are permitted provided that the following conditions are met:
Wolfgang Betz 1:ca975408dd4e 15 * 1. Redistributions of source code must retain the above copyright notice,
Wolfgang Betz 1:ca975408dd4e 16 * this list of conditions and the following disclaimer.
Wolfgang Betz 1:ca975408dd4e 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
Wolfgang Betz 1:ca975408dd4e 18 * this list of conditions and the following disclaimer in the documentation
Wolfgang Betz 1:ca975408dd4e 19 * and/or other materials provided with the distribution.
Wolfgang Betz 1:ca975408dd4e 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
Wolfgang Betz 1:ca975408dd4e 21 * may be used to endorse or promote products derived from this software
Wolfgang Betz 1:ca975408dd4e 22 * without specific prior written permission.
Wolfgang Betz 1:ca975408dd4e 23 *
Wolfgang Betz 1:ca975408dd4e 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Wolfgang Betz 1:ca975408dd4e 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Wolfgang Betz 1:ca975408dd4e 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
Wolfgang Betz 1:ca975408dd4e 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
Wolfgang Betz 1:ca975408dd4e 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
Wolfgang Betz 1:ca975408dd4e 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
Wolfgang Betz 1:ca975408dd4e 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
Wolfgang Betz 1:ca975408dd4e 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
Wolfgang Betz 1:ca975408dd4e 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Wolfgang Betz 1:ca975408dd4e 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Wolfgang Betz 1:ca975408dd4e 34 *
Wolfgang Betz 1:ca975408dd4e 35 ******************************************************************************
Wolfgang Betz 1:ca975408dd4e 36 */
Wolfgang Betz 1:ca975408dd4e 37
Wolfgang Betz 1:ca975408dd4e 38 /* Define to prevent from recursive inclusion --------------------------------*/
Wolfgang Betz 1:ca975408dd4e 39 #ifndef __DBG_MCU_H
Wolfgang Betz 1:ca975408dd4e 40 #define __DBG_MCU_H
Wolfgang Betz 1:ca975408dd4e 41
Wolfgang Betz 1:ca975408dd4e 42 /* Includes ------------------------------------------------------------------*/
Wolfgang Betz 1:ca975408dd4e 43
Wolfgang Betz 1:ca975408dd4e 44 /* Classes -------------------------------------------------------------------*/
Wolfgang Betz 1:ca975408dd4e 45 /** Helper class DbgMCU providing a default constructor which enables debugging
Wolfgang Betz 1:ca975408dd4e 46 * on STM32 MCUs while using sleep modes.
Wolfgang Betz 1:ca975408dd4e 47 */
Wolfgang Betz 1:ca975408dd4e 48 class DbgMCU
Wolfgang Betz 1:ca975408dd4e 49 {
Wolfgang Betz 1:ca975408dd4e 50 public:
Wolfgang Betz 1:ca975408dd4e 51 /** Create a DbgMCU dummy object */
Wolfgang Betz 1:ca975408dd4e 52 DbgMCU(void) {
Wolfgang Betz 1:ca975408dd4e 53 /* the following code is NOT portable */
Wolfgang Betz 1:ca975408dd4e 54 volatile uint32_t *dbgmcu_creg = (uint32_t*)0xE0042004;
Wolfgang Betz 1:ca975408dd4e 55 uint32_t tmp = *dbgmcu_creg;
Wolfgang Betz 1:ca975408dd4e 56
Wolfgang Betz 1:ca975408dd4e 57 tmp &= ~(0xE7);
Wolfgang Betz 1:ca975408dd4e 58 tmp |= 0x27; // Set asynchronous communication via DBGMCU_CR (for ITM/printf)
Wolfgang Betz 1:ca975408dd4e 59 // tmp |= 0xE7; // Set 4-pin tracing via DBGMCU_CR (for ETM)
Wolfgang Betz 1:ca975408dd4e 60 *dbgmcu_creg = tmp;
Wolfgang Betz 1:ca975408dd4e 61 }
Wolfgang Betz 1:ca975408dd4e 62 };
Wolfgang Betz 1:ca975408dd4e 63
Wolfgang Betz 1:ca975408dd4e 64 #endif /* __DBG_MCU_H */