/** * |---------------------------------------------------------------------- * | Copyright (c) 2016 Tilen MAJERLE * | * | Permission is hereby granted, free of charge, to any person * | obtaining a copy of this software and associated documentation * | files (the "Software"), to deal in the Software without restriction, * | including without limitation the rights to use, copy, modify, merge, * | publish, distribute, sublicense, and/or sell copies of the Software, * | and to permit persons to whom the Software is furnished to do so, * | subject to the following conditions: * | * | The above copyright notice and this permission notice shall be * | included in all copies or substantial portions of the Software. * | * | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES * | OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * | AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT * | HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * | WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * | OTHER DEALINGS IN THE SOFTWARE. * |---------------------------------------------------------------------- */ #include "tm_stm32_sdram.h" /* Internal functions */ static void TM_SDRAM_InitPins(void); uint8_t TM_SDRAM_Init(void) { SDRAM_HandleTypeDef SDRAMHandle; FMC_SDRAM_TimingTypeDef Timing; FMC_SDRAM_CommandTypeDef Command; volatile uint32_t timeout = SDRAM_TIMEOUT; static uint8_t initialized = 0; /* Already initialized */ if (initialized) { return 1; } /* Set instance */ SDRAMHandle.Instance = FMC_SDRAM_DEVICE; /* Initialize FMC pins */ TM_SDRAM_InitPins(); /* Enable FMC clock */ __HAL_RCC_FMC_CLK_ENABLE(); /* FMC SDRAM device initialization sequence --------------------------------*/ /* Step 1 ----------------------------------------------------*/ /* Timing configuration for 90 Mhz of SD clock frequency (180Mhz/2) */ /* TMRD: 2 Clock cycles */ /* 1 clock cycle = 1 / 90MHz = 11.1ns */ Timing.LoadToActiveDelay = 2; Timing.ExitSelfRefreshDelay = 7; Timing.SelfRefreshTime = 4; Timing.RowCycleDelay = 7; Timing.WriteRecoveryTime = 2; Timing.RPDelay = 2; Timing.RCDDelay = 2; /* FMC SDRAM control configuration */ SDRAMHandle.Init.SDBank = SDRAM_BANK; SDRAMHandle.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_8; SDRAMHandle.Init.RowBitsNumber = SDRAM_ROWBITS_NUMBER; SDRAMHandle.Init.MemoryDataWidth = SDRAM_MEMORY_WIDTH; SDRAMHandle.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4; SDRAMHandle.Init.CASLatency = SDRAM_CAS_LATENCY; SDRAMHandle.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE; SDRAMHandle.Init.SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2; SDRAMHandle.Init.ReadBurst = SDRAM_READ_BURST_STATE; SDRAMHandle.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_0; /* FMC SDRAM bank initialization */ HAL_SDRAM_Init(&SDRAMHandle, &Timing); /* SDRAM Init sequence */ /* Configure a clock configuration enable command */ Command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE; Command.CommandTarget = SDRAM_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 1; Command.ModeRegisterDefinition = 0; /* Send command */ HAL_SDRAM_SendCommand(&SDRAMHandle, &Command, SDRAM_TIMEOUT); /* Little delay */ timeout = SDRAM_TIMEOUT * 0xF; while (timeout--); /* Configure a PALL (precharge all) command */ Command.CommandMode = FMC_SDRAM_CMD_PALL; Command.CommandTarget = SDRAM_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 1; Command.ModeRegisterDefinition = 0; /* Send the command */ HAL_SDRAM_SendCommand(&SDRAMHandle, &Command, SDRAM_TIMEOUT); /* Configure a Auto-Refresh command */ Command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE; Command.CommandTarget = SDRAM_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 8; Command.ModeRegisterDefinition = 0; /* Send the command */ HAL_SDRAM_SendCommand(&SDRAMHandle, &Command, SDRAM_TIMEOUT); /* Configure a load Mode register command */ Command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE; Command.CommandTarget = SDRAM_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 1; Command.ModeRegisterDefinition = (uint32_t)SDRAM_REG_VALUE; /* Wait until the SDRAM controller is ready */ /* Send the command */ HAL_SDRAM_SendCommand(&SDRAMHandle, &Command, SDRAM_TIMEOUT); /* Step 6: Set the refresh rate counter */ /* Set the device refresh rate */ HAL_SDRAM_ProgramRefreshRate(&SDRAMHandle, SDRAM_REFRESH_COUNT); /* Little delay */ timeout = SDRAM_TIMEOUT * 0xF; while (timeout--); /* Check if everything goes right */ /* Write 0x45 at location 0x50 and check if result is the same on read operation */ TM_SDRAM_Write8(0x50, 0x45); /* Read and check */ if (TM_SDRAM_Read8(0x50) == 0x45) { /* Initialized OK */ initialized = 1; /* Initialized OK */ return 1; } /* Not initialized OK */ initialized = 0; /* Not ok */ return 0; } __weak uint8_t TM_SDRAM_InitCustomPinsCallback(uint16_t AlternateFunction) { /* NOTE: This function Should not be modified, when the callback is needed, the TM_SDRAM_InitCustomPinsCallback could be implemented in the user file */ /* Return 0, use pins already supported from library */ return 0; } /* Private functions */ static void TM_SDRAM_InitPins(void) { /* Try to initialize from user */ if (TM_SDRAM_InitCustomPinsCallback(GPIO_AF12_FMC)) { /* User has initialized pins by itself */ return; } #if defined(SDRAM_USE_STM32F439_EVAL) TM_GPIO_InitAlternate(GPIOD, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOE, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOF, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOG, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOH, GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOI, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_9 | GPIO_PIN_10, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); #elif defined(SDRAM_USE_STM32F429_DISCOVERY) TM_GPIO_InitAlternate(GPIOB, GPIO_PIN_5 | GPIO_PIN_6, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOC, GPIO_PIN_0, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOD, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOE, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOF, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOG, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); #elif defined(SDRAM_USE_STM32F469_DISCOVERY) TM_GPIO_InitAlternate(GPIOC, GPIO_PIN_0, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOD, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOE, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOF, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOG, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOH, GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOI, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_9 | GPIO_PIN_10, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); #elif defined(SDRAM_USE_STM32F7_DISCOVERY) TM_GPIO_InitAlternate(GPIOC, GPIO_PIN_3, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOD, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_3 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOE, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOF, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOG, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOH, GPIO_PIN_3 | GPIO_PIN_5, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); #elif defined(SDRAM_USE_STM32F769_DISCOVERY) TM_GPIO_InitAlternate(GPIOD, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOE, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_7 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOF, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOG, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_4| GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOH, GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_5 | GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12 | GPIO_PIN_13 | GPIO_PIN_14 | GPIO_PIN_15, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); TM_GPIO_InitAlternate(GPIOI, GPIO_PIN_0 | GPIO_PIN_1 | GPIO_PIN_2 | GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_5 | GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_9 | GPIO_PIN_10, TM_GPIO_OType_PP, TM_GPIO_PuPd_NOPULL, TM_GPIO_Speed_High, GPIO_AF12_FMC); #endif }