added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_dbg.c
- Revision:
- 0:9b334a45a8ff
- Child:
- 50:a417edff4437
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/emlib/src/em_dbg.c Thu Oct 01 15:25:22 2015 +0300 @@ -0,0 +1,119 @@ +/***************************************************************************//** + * @file em_dbg.c + * @brief Debug (DBG) Peripheral API + * @version 3.20.12 + ******************************************************************************* + * @section License + * <b>(C) Copyright 2014 Silicon Labs, http://www.silabs.com</b> + ******************************************************************************* + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no + * obligation to support this Software. Silicon Labs is providing the + * Software "AS IS", with no express or implied warranties of any kind, + * including, but not limited to, any implied warranties of merchantability + * or fitness for any particular purpose or warranties against infringement + * of any proprietary rights of a third party. + * + * Silicon Labs will not be liable for any consequential, incidental, or + * special damages, or any other relief, or for any claim by any third party, + * arising from your use of this Software. + * + ******************************************************************************/ + +#include "em_dbg.h" + +#if defined ( CoreDebug_DHCSR_C_DEBUGEN_Msk ) + +#include "em_assert.h" +#include "em_cmu.h" +#include "em_gpio.h" + +/***************************************************************************//** + * @addtogroup EM_Library + * @{ + ******************************************************************************/ + +/***************************************************************************//** + * @addtogroup DBG + * @brief Debug (DBG) Peripheral API + * @{ + ******************************************************************************/ + +/******************************************************************************* + ************************** GLOBAL FUNCTIONS ******************************* + ******************************************************************************/ + +#if defined( GPIO_ROUTE_SWOPEN ) +/***************************************************************************//** + * @brief + * Enable Serial Wire Output (SWO) pin. + * + * @details + * The SWO pin (sometimes denoted SWV, serial wire viewer) allows for + * miscellaneous output to be passed from the Cortex-M3 debug trace module to + * an external debug probe. By default, the debug trace module and pin output + * may be disabled. + * + * Since the SWO pin is only useful when using a debugger, a suggested use + * of this function during startup may be: + * @verbatim + * if (DBG_Connected()) + * { + * DBG_SWOEnable(1); + * } + * @endverbatim + * By checking if debugger is attached, some setup leading to higher energy + * consumption when debugger is attached, can be avoided when not using + * a debugger. + * + * Another alternative may be to set the debugger tool chain to configure + * the required setup (similar to the content of this function) by some + * sort of toolchain scripting during its attach/reset procedure. In that + * case, the above suggested code for enabling the SWO pin is not required + * in the application. + * + * @param[in] location + * Pin location used for SWO pin on the application in use. + ******************************************************************************/ +void DBG_SWOEnable(unsigned int location) +{ + int port; + int pin; + + EFM_ASSERT(location < AFCHANLOC_MAX); + + port = AF_DBG_SWO_PORT(location); + pin = AF_DBG_SWO_PIN(location); + + /* Port/pin location not defined for device? */ + if ((pin < 0) || (port < 0)) + { + EFM_ASSERT(0); + return; + } + + /* Ensure auxiliary clock going to the Cortex debug trace module is enabled */ + CMU_OscillatorEnable(cmuOsc_AUXHFRCO, true, false); + + /* Set selected pin location for SWO pin and enable it */ + GPIO_DbgLocationSet(location); + GPIO_DbgSWOEnable(true); + + /* Configure SWO pin for output */ + GPIO_PinModeSet((GPIO_Port_TypeDef)port, pin, gpioModePushPull, 0); +} +#endif + +/** @} (end addtogroup DBG) */ +/** @} (end addtogroup EM_Library) */ +#endif /* defined ( CoreDebug_DHCSR_C_DEBUGEN_Msk ) */