/**
******************************************************************************
* @file system_stm32h7xx.c
* @author MCD Application Team
* @brief CMSIS Cortex-M Device Peripheral Access Layer System Source File.
*
* This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the "startup_stm32h7xx.s" file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
*
******************************************************************************
* @attention
*
* © Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
#include
#define DATA_IN_ExtSRAM
#define DATA_IN_ExtSDRAM
void SystemInit_ExtMemCtl(void)
{
#define FMC_BMAP_Value 0x02000000 /* FMC Bank Mapping 2 (SDRAM Bank2 remapped) */
__IO uint32_t tmp = 0;
/********** SDRAM + SRAM ***********************************************************************/
#if defined (DATA_IN_ExtSDRAM) && defined (DATA_IN_ExtSRAM)
register uint32_t tmpreg = 0, timeout = 0xFFFF;
register __IO uint32_t index;
/*-- I/O Ports Configuration ------------------------------------------------------*/
/* Enable GPIOD, GPIOE, GPIOF, GPIOG, GPIOH and GPIOI interface clock */
RCC->AHB4ENR |= 0x000001F8;
/* Delay after an RCC peripheral clock enabling */
tmp = READ_BIT(RCC->AHB4ENR, RCC_AHB4ENR_GPIOEEN);
/* Connect PDx pins to FMC Alternate function */
GPIOD->AFR[0] = 0x00CC00CC;
GPIOD->AFR[1] = 0xCCCCCCCC;
/* Configure PDx pins in Alternate function mode */
GPIOD->MODER = 0xAAAAFAFA;
/* Configure PDx pins speed to 100 MHz */
GPIOD->OSPEEDR = 0xFFFF0F0F;
/* Configure PDx pins Output type to push-pull */
GPIOD->OTYPER = 0x00000000;
/* Configure PDx pins in Pull-up */
GPIOD->PUPDR = 0x55550505;
/* Connect PEx pins to FMC Alternate function */
GPIOE->AFR[0] = 0xC00CC0CC;
GPIOE->AFR[1] = 0xCCCCCCCC;
/* Configure PEx pins in Alternate function mode */
GPIOE->MODER = 0xAAAABEBA;
/* Configure PEx pins speed to 100 MHz */
GPIOE->OSPEEDR = 0xFFFFC3CF;
/* Configure PEx pins Output type to push-pull */
GPIOE->OTYPER = 0x00000000;
/* Configure PEx pins in Pull-up */
GPIOE->PUPDR = 0x55554145;
/* Connect PFx pins to FMC Alternate function */
GPIOF->AFR[0] = 0x00CCCCCC;
GPIOF->AFR[1] = 0xCCCCC000;
/* Configure PFx pins in Alternate function mode */
GPIOF->MODER = 0xAABFFAAA;
/* Configure PFx pins speed to 100 MHz */
GPIOF->OSPEEDR = 0xFFC00FFF;
/* Configure PFx pins Output type to push-pull */
GPIOF->OTYPER = 0x00000000;
/* Configure PFx pins in Pull-up */
GPIOF->PUPDR = 0x55400555;
/* Connect PGx pins to FMC Alternate function */
GPIOG->AFR[0] = 0x00CCCCCC;
GPIOG->AFR[1] = 0xC0000C0C;
/* Configure PGx pins in Alternate function mode */
GPIOG->MODER = 0xBFEEFAAA;
/* Configure PGx pins speed to 100 MHz */
GPIOG->OSPEEDR = 0xC0330FFF;
/* Configure PGx pins Output type to push-pull */
GPIOG->OTYPER = 0x00000000;
/* Configure PGx pins in Pull-up */
GPIOG->PUPDR = 0x40110555;
/* Connect PHx pins to FMC Alternate function */
GPIOH->AFR[0] = 0xCCC00000;
GPIOH->AFR[1] = 0xCCCCCCCC;
/* Configure PHx pins in Alternate function mode */
GPIOH->MODER = 0xAAAAABFF;
/* Configure PHx pins speed to 100 MHz */
GPIOH->OSPEEDR = 0xFFFFFC00;
/* Configure PHx pins Output type to push-pull */
GPIOH->OTYPER = 0x00000000;
/* Configure PHx pins in Pull-up */
GPIOH->PUPDR = 0x55555400;
/* Connect PIx pins to FMC Alternate function */
GPIOI->AFR[0] = 0xCCCCCCCC;
GPIOI->AFR[1] = 0x00000CC0;
/* Configure PIx pins in Alternate function mode */
GPIOI->MODER = 0xFFEBAAAA;
/* Configure PIx pins speed to 100 MHz */
GPIOI->OSPEEDR = 0x003CFFFF;
/* Configure PIx pins Output type to push-pull */
GPIOI->OTYPER = 0x00000000;
/* Configure PIx pins in Pull-up */
GPIOI->PUPDR = 0x00145555;
/*-- FMC Configuration ------------------------------------------------------*/
/* Enable the FMC/FSMC interface clock */
(RCC->AHB3ENR |= (RCC_AHB3ENR_FMCEN));
/* Configure and enable Bank1_SRAM2 */
FMC_Bank1_R->BTCR[4] = 0x00001091;
FMC_Bank1_R->BTCR[5] = 0x00110212;
FMC_Bank1E_R->BWTR[4] = 0x0FFFFFFF;
/* SDRAM Timing and access interface configuration */
/*SDBank = FMC_SDRAM_BANK2
ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_9 CC
RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_12 RR
MemoryDataWidth = FMC_SDRAM_MEM_BUS_WIDTH_32 MM
InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4 N
CASLatency = FMC_SDRAM_CAS_LATENCY_2 LL // 2 oder 3, s.u.
WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE W
SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2 KK
ReadBurst = FMC_SDRAM_RBURST_ENABLE B
ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0 PP
LoadToActiveDelay = 2 -> 1 LLLL TMRD
ExitSelfRefreshDelay = 6 -> 5 EEEE TXSR
SelfRefreshTime = 4 -> 3 SSSS TRAS
RowCycleDelay = 6 -> 5 RRRR TRC
WriteRecoveryTime = 2 -> 1 WWWW TWR
RPDelay = 2 -> 1 PPPP TRP
RCDDelay = 2 -> 1 CCCC TRCD */
#if 0
FMC_Bank5_6_R->SDCR[0] = 0x00005965; // 0000 0000 0000 0000 0101 1001 0110 0101 Bank 1
// PPB KKWL LNMM RRCC
FMC_Bank5_6_R->SDCR[1] = 0x00005965; // 0000 0000 0000 0000 0101 1001 0110 0101 Bank 2 // CAS Latency = 2
// WL LNMM RRCC
FMC_Bank5_6_R->SDTR[0] = 0x00105000; // 0000 0000 0001 0000 0101 0000 0000 0000 Bank 1 // Original,
// CCCC PPPP WWWW RRRR SSSS EEEE LLLL // mit CAS Latency = 2 (s.o.)
FMC_Bank5_6_R->SDTR[1] = 0x01010351; // 0000 0001 0000 0001 0000 0011 0101 0001 Bank 2
// CCCC WWWW SSSS EEEE LLLL
#endif
#if 0
FMC_Bank5_6_R->SDTR[0] = 0x00206000; // 0000 0000 0010 0000 0110 0000 0000 0000 Bank 1 // Original + 1 bei allen Werten,
// CCCC PPPP WWWW RRRR SSSS EEEE LLLL // mit CAS Latency = 3 (s.o.)
FMC_Bank5_6_R->SDTR[1] = 0x02020462; // 0000 0010 0000 0010 0000 0100 0110 0010 Bank 2
// CCCC WWWW SSSS EEEE LLLL
#endif
#if 0
FMC_Bank5_6_R->SDTR[0] = 0x00209000; // 0000 0000 0010 0000 1001 0000 0000 0000 Bank 1 // Versuch anhand ISSI-Datenblatt,
// CCCC PPPP WWWW RRRR SSSS EEEE LLLL // mit CAS Latency = 3 (s.o.)
FMC_Bank5_6_R->SDTR[1] = 0x020306B1; // 0000 0010 0000 0011 0000 0110 1011 0001 Bank 2
// CCCC WWWW SSSS EEEE LLLL
#endif
FMC_Bank5_6_R->SDCR[0] = 0x00001800;
FMC_Bank5_6_R->SDCR[1] = 0x00000165;
FMC_Bank5_6_R->SDTR[0] = 0x00105000;
FMC_Bank5_6_R->SDTR[1] = 0x01010351;
/* SDRAM initialization sequence */
/* Clock enable command */
FMC_Bank5_6_R->SDCMR = 0x00000009;
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
/* Delay */
for (index=0; index<1000; index++);
/* PALL command */
FMC_Bank5_6_R->SDCMR = 0x0000000A;
timeout = 0xFFFF;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
FMC_Bank5_6_R->SDCMR = 0x000000EB;
timeout = 0xFFFF;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
FMC_Bank5_6_R->SDCMR = 0x0004400C;
timeout = 0xFFFF;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
/* Set refresh count */
tmpreg = FMC_Bank5_6_R->SDRTR;
FMC_Bank5_6_R->SDRTR = (tmpreg | (0x00000603 << 1));
/* Disable write protection */
tmpreg = FMC_Bank5_6_R->SDCR[1];
FMC_Bank5_6_R->SDCR[1] = (tmpreg & 0xFFFFFDFF);
/* Configure FMC Bank Mapping */
FMC_Bank1_R->BTCR[0] |= FMC_BMAP_Value;
/* FMC controller Enable */
FMC_Bank1_R->BTCR[0] |= 0x80000000;
/********** SDRAM only *************************************************************************/
#elif defined (DATA_IN_ExtSDRAM)
register uint32_t tmpreg = 0, timeout = 0xFFFF;
register __IO uint32_t index;
/*-- I/O Ports Configuration ------------------------------------------------------*/
/* Enable GPIOD, GPIOE, GPIOF, GPIOG, GPIOH and GPIOI interface clock */
RCC->AHB4ENR |= 0x000001F8;
/* Connect PDx pins to FMC Alternate function */
GPIOD->AFR[0] = 0x000000CC;
GPIOD->AFR[1] = 0xCC000CCC;
/* Configure PDx pins in Alternate function mode */
GPIOD->MODER = 0xAFEAFFFA;
/* Configure PDx pins speed to 100 MHz */
GPIOD->OSPEEDR = 0xF03F000F;
/* Configure PDx pins Output type to push-pull */
GPIOD->OTYPER = 0x00000000;
/* Configure PDx pins in Pull-up */
GPIOD->PUPDR = 0x50150005;
/* Connect PEx pins to FMC Alternate function */
GPIOE->AFR[0] = 0xC00000CC;
GPIOE->AFR[1] = 0xCCCCCCCC;
/* Configure PEx pins in Alternate function mode */
GPIOE->MODER = 0xAAAABFFA;
/* Configure PEx pins speed to 100 MHz */
GPIOE->OSPEEDR = 0xFFFFC00F;
/* Configure PEx pins Output type to push-pull */
GPIOE->OTYPER = 0x00000000;
/* Configure PEx pins in Pull-up */
GPIOE->PUPDR = 0x55554005;
/* Connect PFx pins to FMC Alternate function */
GPIOF->AFR[0] = 0x00CCCCCC;
GPIOF->AFR[1] = 0xCCCCC000;
/* Configure PFx pins in Alternate function mode */
GPIOF->MODER = 0xAABFFAAA;
/* Configure PFx pins speed to 100 MHz */
GPIOF->OSPEEDR = 0xFFC00FFF;
/* Configure PFx pins Output type to push-pull */
GPIOF->OTYPER = 0x00000000;
/* Configure PFx pins in Pull-up */
GPIOF->PUPDR = 0x55400555;
/* Connect PGx pins to FMC Alternate function */
GPIOG->AFR[0] = 0x00CCCCCC;
GPIOG->AFR[1] = 0xC000000C;
/* Configure PGx pins in Alternate function mode */
GPIOG->MODER = 0xBFFEFAAA;
/* Configure PGx pins speed to 100 MHz */
GPIOG->OSPEEDR = 0xC0030FFF;
/* Configure PGx pins Output type to push-pull */
GPIOG->OTYPER = 0x00000000;
/* Configure PGx pins in Pull-up */
GPIOG->PUPDR = 0x40010555;
/* Connect PHx pins to FMC Alternate function */
GPIOH->AFR[0] = 0xCCC00000;
GPIOH->AFR[1] = 0xCCCCCCCC;
/* Configure PHx pins in Alternate function mode */
GPIOH->MODER = 0xAAAAABFF;
/* Configure PHx pins speed to 100 MHz */
GPIOH->OSPEEDR = 0xFFFFFC00;
/* Configure PHx pins Output type to push-pull */
GPIOH->OTYPER = 0x00000000;
/* Configure PHx pins in Pull-up */
GPIOH->PUPDR = 0x55555400;
/* Connect PIx pins to FMC Alternate function */
GPIOI->AFR[0] = 0xCCCCCCCC;
GPIOI->AFR[1] = 0x00000CC0;
/* Configure PIx pins in Alternate function mode */
GPIOI->MODER = 0xFFEBAAAA;
/* Configure PIx pins speed to 100 MHz */
GPIOI->OSPEEDR = 0x003CFFFF;
/* Configure PIx pins Output type to push-pull */
GPIOI->OTYPER = 0x00000000;
/* Configure PIx pins in Pull-up */
GPIOI->PUPDR = 0x00145555;
/*-- FMC Configuration ------------------------------------------------------*/
/* Enable the FMC interface clock */
(RCC->AHB3ENR |= (RCC_AHB3ENR_FMCEN));
/* SDRAM Timing and access interface configuration */
/*LoadToActiveDelay = 2
ExitSelfRefreshDelay = 6
SelfRefreshTime = 4
RowCycleDelay = 6
WriteRecoveryTime = 2
RPDelay = 2
RCDDelay = 2
SDBank = FMC_SDRAM_BANK2
ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_9
RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_12
MemoryDataWidth = FMC_SDRAM_MEM_BUS_WIDTH_32
InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4
CASLatency = FMC_SDRAM_CAS_LATENCY_2
WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE
SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2
ReadBurst = FMC_SDRAM_RBURST_ENABLE
ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0*/
FMC_Bank5_6_R->SDCR[0] = 0x00001800;
FMC_Bank5_6_R->SDCR[1] = 0x00000165;
FMC_Bank5_6_R->SDTR[0] = 0x00105000;
FMC_Bank5_6_R->SDTR[1] = 0x01010351;
/* SDRAM initialization sequence */
/* Clock enable command */
FMC_Bank5_6_R->SDCMR = 0x00000009;
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
/* Delay */
for (index=0; index<1000; index++);
/* PALL command */
FMC_Bank5_6_R->SDCMR = 0x0000000A;
timeout = 0xFFFF;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
FMC_Bank5_6_R->SDCMR = 0x000000EB;
timeout = 0xFFFF;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
FMC_Bank5_6_R->SDCMR = 0x0004400C;
timeout = 0xFFFF;
while ((tmpreg != 0) && (timeout-- > 0))
{
tmpreg = FMC_Bank5_6_R->SDSR & 0x00000020;
}
/* Set refresh count */
tmpreg = FMC_Bank5_6_R->SDRTR;
FMC_Bank5_6_R->SDRTR = (tmpreg | (0x00000603<<1));
/* Disable write protection */
tmpreg = FMC_Bank5_6_R->SDCR[1];
FMC_Bank5_6_R->SDCR[1] = (tmpreg & 0xFFFFFDFF);
/* FMC controller Enable */
FMC_Bank1_R->BTCR[0] |= 0x80000000;
/********** SRAM only **************************************************************************/
#elif defined(DATA_IN_ExtSRAM)
/*-- I/O Ports Configuration -----------------------------------------------------*/
/* Enable GPIOD, GPIOE, GPIOF and GPIOG interface clock */
RCC->AHB4ENR |= 0x00000078;
/* Connect PDx pins to FMC Alternate function */
GPIOD->AFR[0] = 0x00CC00CC;
GPIOD->AFR[1] = 0xCCCCCCCC;
/* Configure PDx pins in Alternate function mode */
GPIOD->MODER = 0xAAAAFABA;
/* Configure PDx pins speed to 100 MHz */
GPIOD->OSPEEDR = 0xFFFF0F0F;
/* Configure PDx pins Output type to push-pull */
GPIOD->OTYPER = 0x00000000;
/* Configure PDx pins in Pull-up */
GPIOD->PUPDR = 0x55550505;
/* Connect PEx pins to FMC Alternate function */
GPIOE->AFR[0] = 0xC00CC0CC;
GPIOE->AFR[1] = 0xCCCCCCCC;
/* Configure PEx pins in Alternate function mode */
GPIOE->MODER = 0xAAAABEBA;
/* Configure PEx pins speed to 100 MHz */
GPIOE->OSPEEDR = 0xFFFFC3CF;
/* Configure PEx pins Output type to push-pull */
GPIOE->OTYPER = 0x00000000;
/* Configure PEx pins in Pull-up */
GPIOE->PUPDR = 0x55554145;
/* Connect PFx pins to FMC Alternate function */
GPIOF->AFR[0] = 0x00CCCCCC;
GPIOF->AFR[1] = 0xCCCC0000;
/* Configure PFx pins in Alternate function mode */
GPIOF->MODER = 0xAAFFFAAA;
/* Configure PFx pins speed to 100 MHz */
GPIOF->OSPEEDR = 0xFF000FFF;
/* Configure PFx pins Output type to push-pull */
GPIOF->OTYPER = 0x00000000;
/* Configure PFx pins in Pull-up */
GPIOF->PUPDR = 0x55000555;
/* Connect PGx pins to FMC Alternate function */
GPIOG->AFR[0] = 0x00CCCCCC;
GPIOG->AFR[1] = 0x00000C00;
/* Configure PGx pins in Alternate function mode */
GPIOG->MODER = 0xFFEFFAAA;
/* Configure PGx pins speed to 100 MHz */
GPIOG->OSPEEDR = 0x00300FFF;
/* Configure PGx pins Output type to push-pull */
GPIOG->OTYPER = 0x00000000;
/* Configure PGx pins in Pull-up */
GPIOG->PUPDR = 0x00100555;
/*-- FMC/FSMC Configuration --------------------------------------------------*/
/* Enable the FMC/FSMC interface clock */
(RCC->AHB3ENR |= (RCC_AHB3ENR_FMCEN));
/* Configure and enable Bank1_SRAM2 */
FMC_Bank1_R->BTCR[4] = 0x00001091;
FMC_Bank1_R->BTCR[5] = 0x00110212;
FMC_Bank1E_R->BWTR[4] = 0x0FFFFFFF;
/* FMC controller Enable */
FMC_Bank1_R->BTCR[0] |= 0x80000000;
#endif /* DATA_IN_ExtSRAM */
(void)(tmp);
}