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ea6d73f140
1. Upgrade Cortex driver library (CMSIS -> CMSIS & Device): version 2.3.2 -> 3.0.1 & 3.0.0 - Remove "bsp/efm32/Libraries/CMSIS/Lib/ARM", "bsp/efm32/Libraries/CMSIS/Lib/G++" and "bsp/efm32/Libraries/CMSIS/SVD" to save space 2. Upgrade EFM32 driver libraries (efm32lib -> emlib): version 2.3.2 -> 3.0.0 - Remove "bsp/efm32/Libraries/Device/EnergyMicro/EFM32LG" and "bsp/efm32/Libraries/Device/EnergyMicro/EFM32TG" to save space 3. Upgrade EFM32GG_DK3750 development kit driver library: version 1.2.2 -> 2.0.1 4. Upgrade EFM32_Gxxx_DK development kit driver library: version 1.7.3 -> 2.0.1 5. Add energy management unit driver and test code 6. Modify linker script and related code to compatible with new version of libraries 7. Change EFM32 branch version number to 1.0 8. Add photo frame demo application git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2122 bbd45198-f89e-11dd-88c7-29a3b14d5316
263 lines
8.7 KiB
C
263 lines
8.7 KiB
C
/**************************************************************************//**
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* @file
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* @brief DVK Peripheral Board Control API implementation
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* @author Energy Micro AS
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* @version 2.0.1
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******************************************************************************
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* @section License
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* <b>(C) Copyright 2012 Energy Micro AS, http://www.energymicro.com</b>
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*******************************************************************************
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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* 4. The source and compiled code may only be used on Energy Micro "EFM32"
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* microcontrollers and "EFR4" radios.
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*
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* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
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* obligation to support this Software. Energy Micro AS is providing the
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* Software "AS IS", with no express or implied warranties of any kind,
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* including, but not limited to, any implied warranties of merchantability
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* or fitness for any particular purpose or warranties against infringement
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* of any proprietary rights of a third party.
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*
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* Energy Micro AS will not be liable for any consequential, incidental, or
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* special damages, or any other relief, or for any claim by any third party,
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* arising from your use of this Software.
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*
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*****************************************************************************/
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/***************************************************************************//**
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* @addtogroup BSP
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* @{
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******************************************************************************/
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#include "efm32.h"
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#include "dvk.h"
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#include "dvk_boardcontrol.h"
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#include "dvk_bcregisters.h"
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/**************************************************************************//**
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* @brief Enable EFM32 access to periheral on DVK board
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* @param peri Peripheral to enable
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*****************************************************************************/
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void DVK_enablePeripheral(DVKPeripheral peri)
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{
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uint16_t bit;
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uint16_t tmp;
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/* Calculate which bit to set */
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bit = (uint16_t) peri;
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/* Read peripheral control register */
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tmp = DVK_readRegister(BC_PERCTRL);
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/* Enable peripheral */
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tmp |= bit;
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/* Special case for RS232, if enabled disable shutdown */
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if ((peri == DVK_RS232A) || (peri == DVK_RS232B))
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{
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/* clear shutdown bit */
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tmp &= ~(BC_PERCTRL_RS232_SHUTDOWN);
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}
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/* Special case for IRDA if enabled disable shutdown */
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if (peri == DVK_IRDA)
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{
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/* clear shutdown bit */
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tmp &= ~(BC_PERCTRL_IRDA_SHUTDOWN);
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}
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DVK_writeRegister(BC_PERCTRL, tmp);
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}
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/**************************************************************************//**
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* @brief Disable EFM32 access to peripheral on DVK board
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* @param peri Peripheral to disable
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*****************************************************************************/
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void DVK_disablePeripheral(DVKPeripheral peri)
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{
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uint16_t bit;
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uint16_t tmp;
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/* Calculate which bit to set */
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bit = (uint16_t) peri;
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/* Read peripheral control register */
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tmp = DVK_readRegister(BC_PERCTRL);
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/* Disable peripheral */
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tmp &= ~(bit);
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/* Special case for RS232, if enabled disable shutdown */
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if ((peri == DVK_RS232A) || (peri == DVK_RS232B))
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{
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/* Set shutdown bit */
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tmp |= (BC_PERCTRL_RS232_SHUTDOWN);
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}
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/* Special case for IRDA */
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if (peri == DVK_IRDA)
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{
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/* Set shutdown bit */
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tmp |= (BC_PERCTRL_IRDA_SHUTDOWN);
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}
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DVK_writeRegister(BC_PERCTRL, tmp);
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}
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/**************************************************************************//**
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* @brief Enable BUS access
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*****************************************************************************/
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void DVK_enableBus(void)
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{
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/* Enable bus access */
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DVK_writeRegister(BC_BUS_CFG, 1);
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}
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/**************************************************************************//**
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* @brief Disable BUS access
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*****************************************************************************/
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void DVK_disableBus(void)
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{
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DVK_writeRegister(BC_BUS_CFG, 0);
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}
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/**************************************************************************//**
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* @brief Inform AEM about current energy mode
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* @param energyMode What energy mode we are going to use next
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*****************************************************************************/
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void DVK_setEnergyMode(uint16_t energyMode)
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{
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DVK_writeRegister(BC_EM, energyMode);
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}
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/**************************************************************************//**
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* @brief Get status of bush buttons
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* @return Status of push buttons
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*****************************************************************************/
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uint16_t DVK_getPushButtons(void)
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{
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uint16_t pb = 0;
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uint16_t aemState;
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/* Check state */
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aemState = DVK_readRegister(BC_AEMSTATE);
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/* Read pushbutton status */
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if ( aemState == BC_AEMSTATE_EFM )
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{
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pb = (~(DVK_readRegister(BC_PUSHBUTTON))) & 0x000f;
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}
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return pb;
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}
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/**************************************************************************//**
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* @brief Get joystick button status
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* @return Joystick controller status
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*****************************************************************************/
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uint16_t DVK_getJoystick(void)
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{
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uint16_t joyStick = 0;
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uint16_t aemState;
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/* Check state */
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aemState = DVK_readRegister(BC_AEMSTATE);
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/* Read pushbutton status */
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if ( aemState == BC_AEMSTATE_EFM )
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{
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joyStick = (~(DVK_readRegister(BC_JOYSTICK))) & 0x001f;
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}
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return joyStick;
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}
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/**************************************************************************//**
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* @brief Get dipswitch status
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* The DIP switches are free for user programmable purposes
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* @return Joystick controller status
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*****************************************************************************/
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uint16_t DVK_getDipSwitch(void)
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{
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uint16_t tmp;
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tmp = (~(DVK_readRegister(BC_DIPSWITCH))) & 0x00ff;
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return tmp;
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}
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/**************************************************************************//**
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* @brief Sets user leds
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* @param leds 16-bits which enables or disables the board "User leds"
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*****************************************************************************/
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void DVK_setLEDs(uint16_t leds)
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{
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DVK_writeRegister(BC_LED, leds);
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}
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/**************************************************************************//**
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* @brief Get status of user LEDs
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* @return Status of 16 user leds, bit 1 = on, bit 0 = off
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*****************************************************************************/
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uint16_t DVK_getLEDs(void)
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{
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return DVK_readRegister(BC_LED);
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}
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/**************************************************************************//**
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* @brief Enable "Control" buttons/joystick/dip switch interrupts
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* @param flags Board control interrupt flags, BC_INTEN_<something>
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*****************************************************************************/
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void DVK_enableInterrupt(uint16_t flags)
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{
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uint16_t tmp;
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/* Add flags to interrupt enable register */
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tmp = DVK_readRegister(BC_INTEN);
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tmp |= flags;
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DVK_writeRegister(BC_INTEN, tmp);
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}
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/**************************************************************************//**
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* @brief Disable "Control" buttons/joystick/dip switch interrupts
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* @param flags Board control interrupt flags, BC_INTEN_<something>
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*****************************************************************************/
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void DVK_disableInterrupt(uint16_t flags)
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{
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uint16_t tmp;
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/* Clear flags from interrupt enable register */
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tmp = DVK_readRegister(BC_INTEN);
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flags = ~(flags);
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tmp &= flags;
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DVK_writeRegister(BC_INTEN, tmp);
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}
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/**************************************************************************//**
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* @brief Clear interrupts
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* @param flags Board control interrupt flags, BC_INTEN_<something>
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*****************************************************************************/
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void DVK_clearInterruptFlags(uint16_t flags)
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{
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DVK_writeRegister(BC_INTFLAG, flags);
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}
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/**************************************************************************//**
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* @brief Read interrupt flags
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* @return Returns currently triggered interrupts
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*****************************************************************************/
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uint16_t DVK_getInterruptFlags(void)
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{
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return DVK_readRegister(BC_INTFLAG);
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}
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/** @} (end group BSP) */
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