Generic mbed Extensions used by STM Expansion Board Firmware Packages.
Dependents: X_NUCLEO_IKS01A1 X_NUCLEO_6180XA1 1-DoorCloser 1-DoorCloser ... more
Fork of X_NUCLEO_COMMON by
Generic mbed Extensions used by STM Expansion Board Firmware Packages
DbgMCU
Helper class DbgMCU
providing a default constructor which enables debugging on STM32 MCUs while using sleep modes.
DevI2C
Helper class DevI2C
providing functions for multi-register I2C communication common for a series of I2C devices.
DevSPI
Helper class DevSPI
providing functions for SPI communication common for a series of SPI devices.
Diff: DbgMCU/DbgMCU.h
- Revision:
- 1:ca975408dd4e
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DbgMCU/DbgMCU.h Thu Apr 02 13:23:09 2015 +0200 @@ -0,0 +1,64 @@ +/** + ****************************************************************************** + * @file DbgMCU.h + * @author AST / EST + * @version V0.0.1 + * @date 30-March-2015 + * @brief Header file for enabling debugging in sleep modes for STM32 MCUs + ****************************************************************************** + * @attention + * + * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. Neither the name of STMicroelectronics nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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. + * + ****************************************************************************** + */ + +/* Define to prevent from recursive inclusion --------------------------------*/ +#ifndef __DBG_MCU_H +#define __DBG_MCU_H + +/* Includes ------------------------------------------------------------------*/ + +/* Classes -------------------------------------------------------------------*/ +/** Helper class DbgMCU providing a default constructor which enables debugging + * on STM32 MCUs while using sleep modes. + */ +class DbgMCU +{ + public: + /** Create a DbgMCU dummy object */ + DbgMCU(void) { + /* the following code is NOT portable */ + volatile uint32_t *dbgmcu_creg = (uint32_t*)0xE0042004; + uint32_t tmp = *dbgmcu_creg; + + tmp &= ~(0xE7); + tmp |= 0x27; // Set asynchronous communication via DBGMCU_CR (for ITM/printf) + // tmp |= 0xE7; // Set 4-pin tracing via DBGMCU_CR (for ETM) + *dbgmcu_creg = tmp; + } +}; + +#endif /* __DBG_MCU_H */