577 lines
18 KiB
C
577 lines
18 KiB
C
/**************************************************************************//**
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* @file
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* @brief EFM32GG_DK3750 board support package
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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 "em_gpio.h"
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#include "em_cmu.h"
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#include "em_usart.h"
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#include "dvk.h"
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#include "dvk_bcregisters.h"
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/** Keep intialization mode */
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DVK_Init_TypeDef dvkOperationMode;
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/**************************************************************************//**
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* @brief Initialize EFM32GG_DK3750 board support package functionality
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* @param[in] mode Initialize in EBI or SPI mode
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*****************************************************************************/
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void DVK_init(DVK_Init_TypeDef mode)
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{
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bool ret = false;
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if (mode == DVK_Init_EBI)
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{
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dvkOperationMode = mode;
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DVK_busControlMode(DVK_BusControl_EBI);
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ret = DVK_EBI_init();
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}
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if (mode == DVK_Init_SPI)
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{
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dvkOperationMode = mode;
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DVK_busControlMode(DVK_BusControl_SPI);
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ret = DVK_SPI_init();
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}
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if (ret == false)
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{
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/* Unable to access board control, this is an abornomal situation. */
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/* Try to restart kit and reprogram EFM32 with a standard example */
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/* as this is most likely caused by a peripheral misconfiguration. */
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while (1) ;
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}
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DVK_setEnergyMode(0);
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}
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/**************************************************************************//**
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* @brief Disable EFM32GG_DK3750 board support package functionality
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*****************************************************************************/
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void DVK_disable(void)
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{
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if (dvkOperationMode == DVK_Init_EBI)
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{
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DVK_EBI_disable();
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}
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if (dvkOperationMode == DVK_Init_SPI)
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{
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DVK_SPI_disable();
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}
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DVK_busControlMode(DVK_BusControl_OFF);
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}
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/**************************************************************************//**
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* @brief Configure Board Controller bus decode logic
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* @param[in] mode Mode of operation for decode logic
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*****************************************************************************/
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void DVK_busControlMode(DVK_BusControl_TypeDef mode)
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{
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/* Configure GPIO pins for Board Bus mode */
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/* Note: Inverter on GPIO lines to BC, so signals are active low */
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CMU_ClockEnable(cmuClock_GPIO, true);
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switch (mode)
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{
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case DVK_BusControl_OFF:
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/* Configure board for OFF mode on PB15 MCU_EBI_CONNECT */
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GPIO_PinModeSet(gpioPortB, 15, gpioModePushPull, 1);
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/* Configure board for OFF mode on PD13 MCU_SPI_CONNECT */
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GPIO_PinModeSet(gpioPortD, 13, gpioModePushPull, 1);
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break;
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case DVK_BusControl_DIRECT:
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/* Configure board for DIRECT on PB15 MCU_EBI_CONNECT */
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GPIO_PinModeSet(gpioPortB, 15, gpioModePushPull, 0);
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/* Configure board for DIRECT on PD13 MCU_SPI_CONNECT */
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GPIO_PinModeSet(gpioPortD, 13, gpioModePushPull, 0);
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break;
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case DVK_BusControl_SPI:
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/* Configure board for SPI mode on PB15 MCU_EBI_CONNECT */
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GPIO_PinModeSet(gpioPortB, 15, gpioModePushPull, 1);
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/* Configure board for SPI mode on PD13 MCU_SPI_CONNECT */
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GPIO_PinModeSet(gpioPortD, 13, gpioModePushPull, 0);
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break;
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case DVK_BusControl_EBI:
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default:
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/* Configure board for EBI mode on PB15 MCU_EBI_CONNECT */
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GPIO_PinModeSet(gpioPortB, 15, gpioModePushPull, 0);
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/* Configure board for EBI mode on PD13 MCU_SPI_CONNECT */
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GPIO_PinModeSet(gpioPortD, 13, gpioModePushPull, 1);
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break;
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}
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}
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/**************************************************************************//**
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* @brief Set board LEDs
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*
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* @param[in] leds
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* 16 bits enabling or disabling individual board 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_REGISTER->UIF_LEDS, leds);
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}
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/**************************************************************************//**
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* @brief Get board LED configuration
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*
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* @return
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* 16 bits of LED status
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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_REGISTER->UIF_LEDS);
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}
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/**************************************************************************//**
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* @brief DK3750 Peripheral Access Control
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* Enable or disable access to on-board peripherals through switches
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* and SPI switch where applicable. Turn off conflicting peripherals when
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* enabling another.
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* @param[in] perf
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* Which peripheral to configure
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* @param[in] enable
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* If true, sets up access to peripheral, if false disables it
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*****************************************************************************/
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void DVK_peripheralAccess(DVK_Peripheral_TypeDef perf, bool enable)
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{
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uint16_t perfControl;
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perfControl = DVK_readRegister(&BC_REGISTER->PERICON);
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/* Enable or disable the specificed peripheral by setting board control switch */
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if (enable)
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{
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switch (perf)
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{
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case DVK_RS232_SHUTDOWN:
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perfControl |= (1 << BC_PERICON_RS232_SHUTDOWN_SHIFT);
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break;
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case DVK_RS232_UART:
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perfControl &= ~(1 << BC_PERICON_RS232_SHUTDOWN_SHIFT);
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perfControl &= ~(1 << BC_PERICON_RS232_LEUART_SHIFT);
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perfControl |= (1 << BC_PERICON_RS232_UART_SHIFT);
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break;
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case DVK_RS232_LEUART:
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perfControl &= ~(1 << BC_PERICON_RS232_SHUTDOWN_SHIFT);
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perfControl &= ~(1 << BC_PERICON_RS232_UART_SHIFT);
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perfControl |= (1 << BC_PERICON_RS232_LEUART_SHIFT);
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break;
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case DVK_I2C:
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perfControl |= (1 << BC_PERICON_I2C_SHIFT);
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break;
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case DVK_ETH:
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/* Enable SPI interface */
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DVK_spiControl(DVK_SPI_Ethernet);
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/* Enable Ethernet analog switches */
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perfControl |= (1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl |= (1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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/* Disable Analog Diff Input - pins PD0 and PD1 is shared */
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perfControl &= ~(1 << BC_PERICON_ANALOG_DIFF_SHIFT);
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/* Disable Touch Inputs - pin PD3 is shared */
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perfControl &= ~(1 << BC_PERICON_TOUCH_SHIFT);
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/* Disable Analog SE Input - pin PD2 is shared */
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perfControl &= ~(1 << BC_PERICON_ANALOG_SE_SHIFT);
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break;
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case DVK_I2S:
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/* Direct SPI interface to I2S DAC */
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DVK_spiControl(DVK_SPI_Audio);
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/* Also make surea Audio out is connected for I2S operation */
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perfControl |= (1 << BC_PERICON_AUDIO_OUT_SHIFT);
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perfControl |= (1 << BC_PERICON_AUDIO_OUT_SEL_SHIFT);
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perfControl |= (1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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/* Disable Analog Diff Input - pins PD0 and PD1 is shared */
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perfControl &= ~(1 << BC_PERICON_ANALOG_DIFF_SHIFT);
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/* Disable Touch Inputs - pin PD3 is shared */
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perfControl &= ~(1 << BC_PERICON_TOUCH_SHIFT);
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/* Disable Analog SE Input - pin PD2 is shared */
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perfControl &= ~(1 << BC_PERICON_ANALOG_SE_SHIFT);
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break;
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case DVK_TRACE:
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perfControl |= (1 << BC_PERICON_TRACE_SHIFT);
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break;
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case DVK_TOUCH:
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perfControl |= (1 << BC_PERICON_TOUCH_SHIFT);
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/* Disconnect SPI switch, pin PD3 is shared */
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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DVK_spiControl(DVK_SPI_OFF);
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break;
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case DVK_AUDIO_IN:
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perfControl |= (1 << BC_PERICON_AUDIO_IN_SHIFT);
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break;
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case DVK_AUDIO_OUT:
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perfControl &= ~(1 << BC_PERICON_AUDIO_OUT_SEL_SHIFT);
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perfControl |= (1 << BC_PERICON_AUDIO_OUT_SHIFT);
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break;
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case DVK_ANALOG_DIFF:
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perfControl |= (1 << BC_PERICON_ANALOG_DIFF_SHIFT);
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/* Disconnect SPI switch, pin PD0 and PD1 is shared */
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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DVK_spiControl(DVK_SPI_OFF);
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break;
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case DVK_ANALOG_SE:
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perfControl |= (1 << BC_PERICON_ANALOG_SE_SHIFT);
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/* Disconnect SPI switch, pin PD2 is shared */
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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DVK_spiControl(DVK_SPI_OFF);
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break;
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case DVK_MICROSD:
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perfControl |= (1 << BC_PERICON_SPI_SHIFT);
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break;
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case DVK_TFT:
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/* Enable SPI to SSD2119 */
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DVK_spiControl(DVK_SPI_Display);
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/* Enable SPI analog switch */
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perfControl |= (1 << BC_PERICON_I2S_ETH_SHIFT);
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/* Disable Analog Diff Input - pins D0 and D1 is shared */
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perfControl &= ~(1 << BC_PERICON_ANALOG_DIFF_SHIFT);
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/* Disable Touch Inputs - pin D3 is shared */
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perfControl &= ~(1 << BC_PERICON_TOUCH_SHIFT);
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/* Disable Analog SE Input - pin D2 is shared */
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perfControl &= ~(1 << BC_PERICON_ANALOG_SE_SHIFT);
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break;
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}
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}
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else
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{
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switch (perf)
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{
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case DVK_RS232_SHUTDOWN:
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perfControl &= ~(1 << BC_PERICON_RS232_SHUTDOWN_SHIFT);
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break;
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case DVK_RS232_UART:
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perfControl |= (1 << BC_PERICON_RS232_SHUTDOWN_SHIFT);
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perfControl &= ~(1 << BC_PERICON_RS232_UART_SHIFT);
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break;
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case DVK_RS232_LEUART:
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perfControl |= (1 << BC_PERICON_RS232_SHUTDOWN_SHIFT);
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perfControl &= ~(1 << BC_PERICON_RS232_LEUART_SHIFT);
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break;
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case DVK_I2C:
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perfControl &= ~(1 << BC_PERICON_I2C_SHIFT);
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break;
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case DVK_ETH:
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/* Disable SPI interface */
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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DVK_spiControl(DVK_SPI_OFF);
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break;
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case DVK_I2S:
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/* Disable SPI interface and audio out */
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perfControl &= ~(1 << BC_PERICON_AUDIO_OUT_SHIFT);
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perfControl &= ~(1 << BC_PERICON_AUDIO_OUT_SEL_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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DVK_spiControl(DVK_SPI_OFF);
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break;
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case DVK_TRACE:
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perfControl &= ~(1 << BC_PERICON_TRACE_SHIFT);
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break;
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case DVK_TOUCH:
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perfControl &= ~(1 << BC_PERICON_TOUCH_SHIFT);
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break;
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case DVK_AUDIO_IN:
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perfControl &= ~(1 << BC_PERICON_AUDIO_IN_SHIFT);
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break;
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case DVK_AUDIO_OUT:
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perfControl &= ~(1 << BC_PERICON_AUDIO_OUT_SEL_SHIFT);
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perfControl &= ~(1 << BC_PERICON_AUDIO_OUT_SHIFT);
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break;
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case DVK_ANALOG_DIFF:
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perfControl &= ~(1 << BC_PERICON_ANALOG_DIFF_SHIFT);
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break;
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case DVK_ANALOG_SE:
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perfControl &= ~(1 << BC_PERICON_ANALOG_SE_SHIFT);
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break;
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case DVK_MICROSD:
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perfControl &= ~(1 << BC_PERICON_SPI_SHIFT);
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break;
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case DVK_TFT:
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/* Disable SPI interface */
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SHIFT);
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perfControl &= ~(1 << BC_PERICON_I2S_ETH_SEL_SHIFT);
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DVK_spiControl(DVK_SPI_OFF);
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break;
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}
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}
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/* Write back register */
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DVK_writeRegister(&BC_REGISTER->PERICON, perfControl);
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}
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/**************************************************************************//**
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* @brief Get status of push buttons on kit
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*
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* @return
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* Button state, each bit representing each push button PB0-PB4
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*****************************************************************************/
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uint16_t DVK_getPushButtons(void)
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{
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uint16_t tmp;
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tmp = DVK_readRegister(&BC_REGISTER->UIF_PB);
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return (~tmp) & 0x000F;
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}
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/**************************************************************************//**
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* @brief Configure SPI for correct peripheral
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*
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* @param[in] device
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* Device to enable SPI bus for
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*****************************************************************************/
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void DVK_spiControl(DVK_SpiControl_TypeDef device)
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{
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switch (device)
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{
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case DVK_SPI_Audio:
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DVK_writeRegister(&BC_REGISTER->SPI_DEMUX, BC_SPI_DEMUX_SLAVE_AUDIO);
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break;
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case DVK_SPI_Ethernet:
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DVK_writeRegister(&BC_REGISTER->SPI_DEMUX, BC_SPI_DEMUX_SLAVE_ETHERNET);
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break;
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case DVK_SPI_Display:
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DVK_writeRegister(&BC_REGISTER->SPI_DEMUX, BC_SPI_DEMUX_SLAVE_DISPLAY);
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break;
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case DVK_SPI_OFF:
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USART_Reset(USART1);
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CMU_ClockEnable(cmuClock_USART1, false);
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break;
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}
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}
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/**************************************************************************//**
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* @brief Inform AEM/Board Controller about what energy mode we are currently
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* entering. This information can be used for better visual feedback of
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* EFM32GG activity for the board controller and PC applications
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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_REGISTER->EM, energyMode);
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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, 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_REGISTER->INTEN);
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tmp |= flags;
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DVK_writeRegister(&BC_REGISTER->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_REGISTER->INTEN);
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flags = ~(flags);
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tmp &= flags;
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DVK_writeRegister(&BC_REGISTER->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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uint16_t tmp;
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tmp = DVK_readRegister(&BC_REGISTER->INTFLAG);
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tmp &= ~(flags);
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DVK_writeRegister(&BC_REGISTER->INTFLAG, tmp);
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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_REGISTER->INTFLAG);
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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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joyStick = ~(DVK_readRegister(&BC_REGISTER->UIF_JOYSTICK)) & 0x001f;
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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 Dip switch
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*****************************************************************************/
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uint16_t DVK_getDipSwitch(void)
|
|
{
|
|
return DVK_readRegister(&BC_REGISTER->UIF_DIP) & 0x000f;
|
|
}
|
|
|
|
|
|
/**************************************************************************//**
|
|
* @brief Configure display control
|
|
*****************************************************************************/
|
|
void DVK_displayControl(DVK_Display_TypeDef option)
|
|
{
|
|
uint16_t tmp;
|
|
|
|
switch (option)
|
|
{
|
|
case DVK_Display_EBI:
|
|
DVK_writeRegister(&BC_REGISTER->ARB_CTRL, BC_ARB_CTRL_EBI);
|
|
break;
|
|
|
|
case DVK_Display_SPI:
|
|
DVK_writeRegister(&BC_REGISTER->ARB_CTRL, BC_ARB_CTRL_SPI);
|
|
break;
|
|
|
|
case DVK_Display_BC:
|
|
DVK_writeRegister(&BC_REGISTER->ARB_CTRL, BC_ARB_CTRL_BC);
|
|
break;
|
|
|
|
case DVK_Display_PowerEnable:
|
|
tmp = DVK_readRegister(&BC_REGISTER->DISPLAY_CTRL);
|
|
tmp |= (BC_DISPLAY_CTRL_POWER_ENABLE);
|
|
DVK_writeRegister(&BC_REGISTER->DISPLAY_CTRL, tmp);
|
|
break;
|
|
|
|
case DVK_Display_PowerDisable:
|
|
tmp = DVK_readRegister(&BC_REGISTER->DISPLAY_CTRL);
|
|
tmp &= ~(BC_DISPLAY_CTRL_POWER_ENABLE);
|
|
DVK_writeRegister(&BC_REGISTER->DISPLAY_CTRL, tmp);
|
|
break;
|
|
|
|
case DVK_Display_ResetAssert:
|
|
tmp = DVK_readRegister(&BC_REGISTER->DISPLAY_CTRL);
|
|
tmp |= (BC_DISPLAY_CTRL_RESET);
|
|
DVK_writeRegister(&BC_REGISTER->DISPLAY_CTRL, tmp);
|
|
break;
|
|
|
|
case DVK_Display_ResetRelease:
|
|
tmp = DVK_readRegister(&BC_REGISTER->DISPLAY_CTRL);
|
|
tmp &= ~(BC_DISPLAY_CTRL_RESET);
|
|
DVK_writeRegister(&BC_REGISTER->DISPLAY_CTRL, tmp);
|
|
break;
|
|
|
|
case DVK_Display_Mode8080:
|
|
tmp = DVK_readRegister(&BC_REGISTER->DISPLAY_CTRL);
|
|
tmp &= ~(BC_DISPLAY_CTRL_MODE_GENERIC);
|
|
DVK_writeRegister(&BC_REGISTER->DISPLAY_CTRL, tmp);
|
|
break;
|
|
|
|
case DVK_Display_ModeGeneric:
|
|
tmp = DVK_readRegister(&BC_REGISTER->DISPLAY_CTRL);
|
|
tmp |= (BC_DISPLAY_CTRL_MODE_GENERIC);
|
|
DVK_writeRegister(&BC_REGISTER->DISPLAY_CTRL, tmp);
|
|
break;
|
|
|
|
default:
|
|
/* Unknown command */
|
|
while (1) ;
|
|
}
|
|
}
|
|
|
|
/** @} (end group BSP) */
|