URL
https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_EFMG890F128_IAR/] [bsp/] [dvk_boardcontrol.c] - Rev 649
Go to most recent revision | Compare with Previous | Blame | View Log
/**************************************************************************//** * @file * @brief DVK Peripheral Board Control API implementation * @author Energy Micro AS * @version 1.0.1 ****************************************************************************** * @section License * <b>(C) Copyright 2009 Energy Micro AS, http://www.energymicro.com</b> ****************************************************************************** * * This source code is the property of Energy Micro AS. The source and compiled * code may only be used on Energy Micro "EFM32" microcontrollers. * * This copyright notice may not be removed from the source code nor changed. * * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no * obligation to support this Software. Energy Micro AS 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. * * Energy Micro AS 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 "efm32.h" #include "dvk.h" #include "dvk_boardcontrol.h" #include "dvk_bcregisters.h" /**************************************************************************//** * @brief Enable EFM32 access to periheral on DVK board * @param peri Peripheral to enable *****************************************************************************/ void DVK_enablePeripheral(DVKPeripheral peri) { uint16_t bit; uint16_t tmp; /* Calculate which bit to set */ bit = (uint16_t) peri; /* Read peripheral control register */ tmp = DVK_readRegister(BC_PERCTRL); /* Enable peripheral */ tmp |= bit; /* Special case for RS232, if enabled disable shutdown */ if ((peri == DVK_RS232A) || (peri == DVK_RS232B)) { /* clear shutdown bit */ tmp &= ~(BC_PERCTRL_RS232_SHUTDOWN); } /* Special case for IRDA if enabled disable shutdown */ if (peri == DVK_IRDA) { /* clear shutdown bit */ tmp &= ~(BC_PERCTRL_IRDA_SHUTDOWN); } DVK_writeRegister(BC_PERCTRL, tmp); } /**************************************************************************//** * @brief Disable EFM32 access to peripheral on DVK board * @param peri Peripheral to disable *****************************************************************************/ void DVK_disablePeripheral(DVKPeripheral peri) { uint16_t bit; uint16_t tmp; /* Calculate which bit to set */ bit = (uint16_t) peri; /* Read peripheral control register */ tmp = DVK_readRegister(BC_PERCTRL); /* Disable peripheral */ tmp &= ~(bit); /* Special case for RS232, if enabled disable shutdown */ if ((peri == DVK_RS232A) || (peri == DVK_RS232B)) { /* Set shutdown bit */ tmp |= (BC_PERCTRL_RS232_SHUTDOWN); } /* Special case for IRDA */ if (peri == DVK_IRDA) { /* Set shutdown bit */ tmp |= (BC_PERCTRL_IRDA_SHUTDOWN); } DVK_writeRegister(BC_PERCTRL, tmp); } /**************************************************************************//** * @brief Enable BUS access *****************************************************************************/ void DVK_enableBus(void) { /* Enable bus access */ DVK_writeRegister(BC_BUS_CFG, 1); } /**************************************************************************//** * @brief Disable BUS access *****************************************************************************/ void DVK_disableBus(void) { DVK_writeRegister(BC_BUS_CFG, 0); } /**************************************************************************//** * @brief Inform AEM about current energy mode * @param energyMode What energy mode we are going to use next *****************************************************************************/ void DVK_setEnergyMode(uint16_t energyMode) { DVK_writeRegister(BC_EM, energyMode); } /**************************************************************************//** * @brief Get status of bush buttons * @return Status of push buttons *****************************************************************************/ uint16_t DVK_getPushButtons(void) { uint16_t tmp; tmp = (~(DVK_readRegister(BC_PUSHBUTTON))) & 0x000f; return tmp; } /**************************************************************************//** * @brief Get joystick button status * @return Joystick controller status *****************************************************************************/ uint16_t DVK_getJoystick(void) { uint16_t tmp; tmp = (~(DVK_readRegister(BC_JOYSTICK))) & 0x001f; return tmp; } /**************************************************************************//** * @brief Get dipswitch status * The DIP switches are free for user programmable purposes * @return Joystick controller status *****************************************************************************/ uint16_t DVK_getDipSwitch(void) { uint16_t tmp; tmp = (~(DVK_readRegister(BC_DIPSWITCH))) & 0x00ff; return tmp; } /**************************************************************************//** * @brief Sets user leds * @param leds 16-bits which enables or disables the board "User leds" *****************************************************************************/ void DVK_setLEDs(uint16_t leds) { DVK_writeRegister(BC_LED, leds); } /**************************************************************************//** * @brief Get status of user LEDs * @return Status of 16 user leds, bit 1 = on, bit 0 = off *****************************************************************************/ uint16_t DVK_getLEDs(void) { return DVK_readRegister(BC_LED); } /**************************************************************************//** * @brief Enable "Control" buttons/joystick/dip switch interrupts * @param flags Board control interrupt flags, BC_INTEN_<something> *****************************************************************************/ void DVK_enableInterrupt(uint16_t flags) { uint16_t tmp; /* Add flags to interrupt enable register */ tmp = DVK_readRegister(BC_INTEN); tmp |= flags; DVK_writeRegister(BC_INTEN, tmp); } /**************************************************************************//** * @brief Disable "Control" buttons/joystick/dip switch interrupts * @param flags Board control interrupt flags, BC_INTEN_<something> *****************************************************************************/ void DVK_disableInterrupt(uint16_t flags) { uint16_t tmp; /* Clear flags from interrupt enable register */ tmp = DVK_readRegister(BC_INTEN); flags = ~(flags); tmp &= flags; DVK_writeRegister(BC_INTEN, tmp); } /**************************************************************************//** * @brief Clear interrupts * @param flags Board control interrupt flags, BC_INTEN_<something> *****************************************************************************/ void DVK_clearInterruptFlags(uint16_t flags) { DVK_writeRegister(BC_INTFLAG, flags); } /**************************************************************************//** * @brief Read interrupt flags * @return Returns currently triggered interrupts *****************************************************************************/ uint16_t DVK_getInterruptFlags(void) { return DVK_readRegister(BC_INTFLAG); }
Go to most recent revision | Compare with Previous | Blame | View Log