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/**************************************************************************//**
* @file
* @brief EFM32GG_DK3750 board support package EBI API implementation
* @author Energy Micro AS
* @version 2.0.1
******************************************************************************
* @section License
* <b>(C) Copyright 2012 Energy Micro AS, http://www.energymicro.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.
* 4. The source and compiled code may only be used on Energy Micro "EFM32"
* microcontrollers and "EFR4" radios.
*
* 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.
*
*****************************************************************************/
/***************************************************************************//**
* @addtogroup BSP
* @{
******************************************************************************/
#include "efm32.h"
#include "em_gpio.h"
#include "em_ebi.h"
#include "em_cmu.h"
#include "dvk.h"
#include "dvk_bcregisters.h"
#if defined(EBI_PRESENT)
/**************************************************************************//**
* @brief Configure EFM32GG_DK3750 EBI (external bus interface) access for
* - 0x80000000: Board Control registers (Xilinx Spartan FPGA)
* - 0x84000000: TFT memory mapped drive (URT/SSD2119 controller)
* - 0x88000000: PSRAM external memory (Micron MT45W2MW16PGA-70 IT)
* - 0x8c000000: NOR flash (Spansion flash S29GLxxx_FBGA)
* @return true if successful, false if board controller access failed
*****************************************************************************/
bool DVK_EBI_init(void)
{
EBI_Init_TypeDef ebiConfig = EBI_INIT_DEFAULT;
/* Enable clocks */
CMU_ClockEnable(cmuClock_EBI, true);
CMU_ClockEnable(cmuClock_GPIO, true);
/* Configure GPIO pins as push pull */
/* EBI AD9..15 */
GPIO_PinModeSet(gpioPortA, 0, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 1, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 2, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 3, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 4, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 5, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortA, 6, gpioModePushPull, 0);
/* EBI AD8 */
GPIO_PinModeSet(gpioPortA, 15, gpioModePushPull, 0);
/* EBI A16-A22 */
GPIO_PinModeSet(gpioPortB, 0, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortB, 1, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortB, 2, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortB, 3, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortB, 4, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortB, 5, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortB, 6, gpioModePushPull, 0);
/* EBI CS0-CS3 */
GPIO_PinModeSet(gpioPortD, 9, gpioModePushPull, 1);
GPIO_PinModeSet(gpioPortD, 10, gpioModePushPull, 1);
GPIO_PinModeSet(gpioPortD, 11, gpioModePushPull, 1);
GPIO_PinModeSet(gpioPortD, 12, gpioModePushPull, 1);
/* EBI AD0..7 */
GPIO_PinModeSet(gpioPortE, 8, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortE, 9, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortE, 10, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortE, 11, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortE, 12, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortE, 13, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortE, 14, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortE, 15, gpioModePushPull, 0);
/* EBI ARDY/WEN/REN/ALE */
/* ARDY on Port F Pin 2 is not used */
/* GPIO_PinModeSet(gpioPortF, 2, gpioModeInput, 0); */
GPIO_PinModeSet(gpioPortF, 8, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortF, 9, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortC, 11, gpioModePushPull, 0);
/* EBI Byte Lane 0 support BL0/BL1 */
GPIO_PinModeSet(gpioPortF, 6, gpioModePushPull, 0);
GPIO_PinModeSet(gpioPortF, 7, gpioModePushPull, 0);
/* ---------------------------------------------------- */
/* External 4MB PSRAM, Bank 2, Base Address 0x88000000 */
/* Micron MT45W2MW16PGA-70 IT, 32Mb Cellular RAM */
/* ---------------------------------------------------- */
ebiConfig.banks = EBI_BANK2;
ebiConfig.csLines = EBI_CS2;
ebiConfig.mode = ebiModeD16A16ALE;
ebiConfig.alePolarity = ebiActiveHigh;
ebiConfig.blEnable = true;
ebiConfig.noIdle = true;
ebiConfig.ardyEnable = false;
ebiConfig.addrHalfALE = true;
ebiConfig.readPrefetch = true;
ebiConfig.aLow = ebiALowA16;
ebiConfig.aHigh = ebiAHighA23;
ebiConfig.location = ebiLocation1;
/* Address Setup and hold time */
ebiConfig.addrHoldCycles = 0;
ebiConfig.addrSetupCycles = 0;
/* Read cycle times */
ebiConfig.readStrobeCycles = 4;
ebiConfig.readHoldCycles = 0;
ebiConfig.readSetupCycles = 0;
/* Write cycle times */
ebiConfig.writeStrobeCycles = 2;
ebiConfig.writeHoldCycles = 0;
ebiConfig.writeSetupCycles = 0;
/* Configure EBI bank 2 - external PSRAM */
EBI_Init(&ebiConfig);
/* --------------------------------------------------------- */
/* Board Control Registers, Bank 0, Base Address 0x80000000 */
/* FPGA Xilinx Spartan XC6SLX9 CSG324 */
/* --------------------------------------------------------- */
ebiConfig.banks = EBI_BANK0;
ebiConfig.csLines = EBI_CS0;
ebiConfig.mode = ebiModeD16A16ALE;;
ebiConfig.alePolarity = ebiActiveHigh;
/* keep blEnable */
ebiConfig.blEnable = false;
ebiConfig.addrHalfALE = true;
ebiConfig.readPrefetch = false;
ebiConfig.noIdle = true;
/* keep alow/ahigh configuration */
/* ebiConfig.aLow = ebiALowA0; - needs to be set for PSRAM */
/* ebiConfig.aHigh = ebiAHighA0; - needs to be set for PSRAM */
/* Address Setup and hold time */
ebiConfig.addrHoldCycles = 3;
ebiConfig.addrSetupCycles = 3;
/* Read cycle times */
ebiConfig.readStrobeCycles = 7;
ebiConfig.readHoldCycles = 3;
ebiConfig.readSetupCycles = 3;
/* Write cycle times */
ebiConfig.writeStrobeCycles = 7;
ebiConfig.writeHoldCycles = 3;
ebiConfig.writeSetupCycles = 3;
/* Configure EBI bank 0 */
EBI_Init(&ebiConfig);
/* ----------------------------------------------------- */
/* TFT-LCD Registers, Bank1, Base Address 0x84000000 */
/* URT USMH_8252MD_320X240_RGB */
/* Solomon Systech SSD 2119 */
/* ----------------------------------------------------- */
ebiConfig.banks = EBI_BANK1;
ebiConfig.csLines = EBI_CS1;
/* Address Setup and hold time */
ebiConfig.addrHoldCycles = 1;
ebiConfig.addrSetupCycles = 1;
/* Read cycle times */
ebiConfig.readStrobeCycles = 7;
ebiConfig.readHoldCycles = 3;
ebiConfig.readSetupCycles = 3;
/* Write cycle times */
ebiConfig.writeStrobeCycles = 2;
ebiConfig.writeHoldCycles = 1;
ebiConfig.writeSetupCycles = 1;
/* Configure EBI bank 1 */
EBI_Init(&ebiConfig);
/* ----------------------------------------- */
/* NOR Flash, Bank3, Base Address 0x8c000000 */
/* Spansion flash S29GLxxx_FBGA */
/* ----------------------------------------- */
ebiConfig.banks = EBI_BANK3;
ebiConfig.csLines = EBI_CS3;
ebiConfig.mode = ebiModeD16A16ALE;;
ebiConfig.alePolarity = ebiActiveHigh;
/* keep blEnable */
ebiConfig.blEnable = true;
ebiConfig.addrHalfALE = true;
ebiConfig.readPrefetch = false;
ebiConfig.noIdle = true;
/* Address Setup and hold time */
ebiConfig.addrHoldCycles = 0;
ebiConfig.addrSetupCycles = 0;
/* Read cycle times */
ebiConfig.readStrobeCycles = 5;
ebiConfig.readHoldCycles = 0;
ebiConfig.readSetupCycles = 0;
/* Write cycle times */
ebiConfig.writeStrobeCycles = 5;
ebiConfig.writeHoldCycles = 0;
ebiConfig.writeSetupCycles = 0;
/* Configure EBI bank 3 */
EBI_Init(&ebiConfig);
/* Enable extended address range */
DVK_EBI_extendedAddressRange(true);
/* Verify connectivity to Board Control registers */
if (BC_REGISTER->MAGIC != 0xef32)
{
return false;
}
else
{
return true;
}
}
/**************************************************************************//**
* @brief Disable EFM32GG_DK3750 EBI board support package functionality
*****************************************************************************/
void DVK_EBI_disable(void)
{
/* Configure GPIO pins as push pull */
/* EBI AD9..15 */
GPIO_PinModeSet(gpioPortA, 0, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortA, 1, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortA, 2, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortA, 3, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortA, 4, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortA, 5, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortA, 6, gpioModeDisabled, 0);
/* EBI AD8 */
GPIO_PinModeSet(gpioPortA, 15, gpioModeDisabled, 0);
/* EBI A16-A22 */
GPIO_PinModeSet(gpioPortB, 0, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortB, 1, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortB, 2, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortB, 3, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortB, 4, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortB, 5, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortB, 6, gpioModeDisabled, 0);
/* EBI CS0-CS3 */
GPIO_PinModeSet(gpioPortD, 9, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortD, 10, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortD, 11, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortD, 12, gpioModeDisabled, 0);
/* EBI AD0..7 */
GPIO_PinModeSet(gpioPortE, 8, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortE, 9, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortE, 10, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortE, 11, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortE, 12, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortE, 13, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortE, 14, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortE, 15, gpioModeDisabled, 0);
/* EBI ARDY/WEN/REN/ALE */
/* ARDY on Port F Pin 2 is not used */
/* GPIO_PinModeSet(gpioPortF, 2, gpioModeDisabled, 0); */
GPIO_PinModeSet(gpioPortF, 8, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortF, 9, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortC, 11, gpioModeDisabled, 0);
/* EBI Byte Lane 0 support BL0/BL1 */
GPIO_PinModeSet(gpioPortF, 6, gpioModeDisabled, 0);
GPIO_PinModeSet(gpioPortF, 7, gpioModeDisabled, 0);
/* Reset EBI configuration */
EBI_Disable();
/* Turn off EBI clock */
CMU_ClockEnable(cmuClock_EBI, false);
}
/**************************************************************************//**
* @brief Configure EBI extended Address Range
*
* @param[in] enable
* Controls extended address range mode
*****************************************************************************/
void DVK_EBI_extendedAddressRange(bool enable)
{
if (enable)
{
BC_REGISTER->EBI_CTRL = 0x0001;
}
else
{
BC_REGISTER->EBI_CTRL = 0x0000;
}
}
#endif
/** @} (end group BSP) */
|
