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
259 lines
9.7 KiB
C
259 lines
9.7 KiB
C
/**************************************************************************//**
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* @file
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* @brief EBI implementation of Board Control interface
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* This implementation works for devices w/o LCD display on the
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* MCU module, specifically the EFM32_G2xx_DK development board
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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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#include "efm32.h"
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#include "em_ebi.h"
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#include "em_cmu.h"
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#include "em_gpio.h"
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#include "dvk.h"
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#include "dvk_bcregisters.h"
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/***************************************************************************//**
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* @addtogroup BSP
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* @{
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******************************************************************************/
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#if defined(EBI_PRESENT)
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/**************************************************************************//**
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* @brief Configure EBI (external bus interface) for Board Control register
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* access
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*****************************************************************************/
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void DVK_EBI_configure(void)
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{
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EBI_Init_TypeDef ebiConfig = EBI_INIT_DEFAULT;
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/* Run time check if we have EBI on-chip capability on this device */
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switch ((DEVINFO->PART & _DEVINFO_PART_DEVICE_NUMBER_MASK) >>
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_DEVINFO_PART_DEVICE_NUMBER_SHIFT)
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{
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/* Only device types EFM32G 280/290/880 and 890 have EBI capability */
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case 280:
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case 290:
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case 880:
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case 890:
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break;
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default:
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/* This device do not have EBI capability - use SPI to interface DVK */
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/* With high probability your project has been configured for an */
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/* incorrect part number. */
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while (1) ;
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}
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/* Enable clocks */
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CMU_ClockEnable(cmuClock_EBI, true);
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CMU_ClockEnable(cmuClock_GPIO, true);
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/* Configure mode - disable SPI, enable EBI */
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GPIO_PinModeSet(gpioPortC, 13, gpioModePushPull, 1);
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GPIO_PinModeSet(gpioPortC, 12, gpioModePushPull, 0);
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/* Configure GPIO pins as push pull */
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/* EBI AD9..15 */
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GPIO_PinModeSet(gpioPortA, 0, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortA, 1, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortA, 2, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortA, 3, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortA, 4, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortA, 5, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortA, 6, gpioModePushPull, 0);
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/* EBI AD8 */
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GPIO_PinModeSet(gpioPortA, 15, gpioModePushPull, 0);
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/* EBI CS0-CS3 */
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GPIO_PinModeSet(gpioPortD, 9, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortD, 10, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortD, 11, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortD, 12, gpioModePushPull, 0);
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/* EBI AD0..7 */
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GPIO_PinModeSet(gpioPortE, 8, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 9, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 10, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 11, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 12, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 13, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 14, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortE, 15, gpioModePushPull, 0);
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/* EBI ARDY/ALEN/Wen/Ren */
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GPIO_PinModeSet(gpioPortF, 2, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortF, 3, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortF, 4, gpioModePushPull, 0);
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GPIO_PinModeSet(gpioPortF, 5, gpioModePushPull, 0);
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/* Configure EBI controller, changing default values */
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ebiConfig.mode = ebiModeD16A16ALE;
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/* Enable bank 0 address map 0x80000000, FPGA Flash */
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/* Enable bank 1 address map 0x84000000, FPGA SRAM */
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/* Enable bank 2 address map 0x88000000, FPGA TFT Display (SSD2119) */
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/* Enable bank 3 address map 0x8c000000, FPGA Board Control Registers */
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ebiConfig.banks = EBI_BANK0|EBI_BANK1|EBI_BANK2|EBI_BANK3;
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ebiConfig.csLines = EBI_CS0|EBI_CS1|EBI_CS2|EBI_CS3;
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/* Address Setup and hold time */
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ebiConfig.addrHoldCycles = 3;
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ebiConfig.addrSetupCycles = 3;
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/* Read cycle times */
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ebiConfig.readStrobeCycles = 7;
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ebiConfig.readHoldCycles = 3;
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ebiConfig.readSetupCycles = 3;
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/* Write cycle times */
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ebiConfig.writeStrobeCycles = 7;
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ebiConfig.writeHoldCycles = 3;
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ebiConfig.writeSetupCycles = 3;
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/* Polarity values are default */
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/* Configure EBI */
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EBI_Init(&ebiConfig);
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}
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/**************************************************************************//**
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* @brief Initialize EBI
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* access
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* @return true on success, false on failure
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*****************************************************************************/
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bool DVK_EBI_init(void)
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{
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uint16_t ebiMagic;
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int retry = 10;
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/* Disable all GPIO pins and register */
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DVK_EBI_disable();
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/* Configure EBI */
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DVK_EBI_configure();
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/* Verify that EBI access is working, if not kit is in SPI mode and needs to
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* be configured for EBI access */
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ebiMagic = DVK_EBI_readRegister(BC_MAGIC);
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while ((ebiMagic != BC_MAGIC_VALUE) && retry)
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{
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DVK_EBI_disable();
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/* Enable SPI interface */
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DVK_SPI_init();
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/* Set EBI mode - after this SPI access will no longer be available */
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ebiMagic = DVK_SPI_readRegister(BC_MAGIC);
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DVK_SPI_writeRegister(BC_CFG, BC_CFG_EBI);
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/* Disable SPI */
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DVK_SPI_disable();
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/* Now setup EBI again */
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DVK_EBI_configure();
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/* Wait until ready */
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ebiMagic = DVK_EBI_readRegister(BC_MAGIC);
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if (ebiMagic == BC_MAGIC_VALUE) break;
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retry--;
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}
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if ( ! retry ) return false;
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DVK_EBI_writeRegister(BC_LED, retry);
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return true;
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}
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/**************************************************************************//**
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* @brief Disable EBI interface, free all GPIO pins
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*****************************************************************************/
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void DVK_EBI_disable(void)
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{
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/* Disable EBI and SPI _BC_BUS_CONNECT */
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GPIO_PinModeSet(gpioPortC, 12, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortC, 13, gpioModeDisabled, 0);
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/* Configure GPIO pins as disabled */
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GPIO_PinModeSet(gpioPortA, 0, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortA, 1, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortA, 2, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortA, 3, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortA, 4, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortA, 5, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortA, 6, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortA, 15, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortD, 9, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortD, 10, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortD, 11, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortD, 12, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 8, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 9, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 10, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 11, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 12, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 13, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 14, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortE, 15, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortF, 2, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortF, 3, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortF, 4, gpioModeDisabled, 0);
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GPIO_PinModeSet(gpioPortF, 5, gpioModeDisabled, 0);
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/* Disable EBI controller */
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#if 0
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EBI_Disable();
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#endif
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/* Disable EBI clock in CMU */
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CMU_ClockEnable(cmuClock_EBI, false);
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}
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/**************************************************************************//**
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* @brief Write data into 16-bit board control register
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* @param addr Address to board control register
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* @param data Data to write into register
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*****************************************************************************/
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void DVK_EBI_writeRegister(volatile uint16_t *addr, uint16_t data)
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{
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*addr = data;
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}
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/**************************************************************************//**
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* @brief Write data into 16-bit board control register
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* @param addr Register to read from
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*****************************************************************************/
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uint16_t DVK_EBI_readRegister(volatile uint16_t *addr)
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{
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return *addr;
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}
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#endif
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/** @} (end group BSP) */
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