/** ****************************************************************************** * @file bsp_sdram.c * @author fire * @version V1.0 * @date 2015-xx-xx * @brief sdram应用函数接口 ****************************************************************************** * @attention * * 实验平台:野火 STM32 H743 开发板 * 论坛 :http://www.chuxue123.com * 淘宝 :http://firestm32.taobao.com * ****************************************************************************** */ #include "./sdram/bsp_sdram.h" static FMC_SDRAM_CommandTypeDef Command; SDRAM_HandleTypeDef hsdram1; #define sdramHandle hsdram1 /** * @brief 延迟一段时间 * @param 延迟的时间长度 * @retval None */ static void SDRAM_delay(__IO uint32_t nCount) { __IO uint32_t index = 0; for(index = (100000 * nCount); index != 0; index--) { } } /** * @brief 初始化控制SDRAM的IO * @param 无 * @retval 无 */ static void SDRAM_GPIO_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; /* 使能SDRAM相关的IO时钟 */ /*地址信号线*/ FMC_A0_GPIO_CLK();FMC_A1_GPIO_CLK(); FMC_A2_GPIO_CLK(); FMC_A3_GPIO_CLK();FMC_A4_GPIO_CLK(); FMC_A5_GPIO_CLK(); FMC_A6_GPIO_CLK();FMC_A7_GPIO_CLK(); FMC_A8_GPIO_CLK(); FMC_A9_GPIO_CLK();FMC_A10_GPIO_CLK();FMC_A11_GPIO_CLK(); FMC_A12_GPIO_CLK(); /*数据信号线*/ FMC_D0_GPIO_CLK(); FMC_D1_GPIO_CLK() ; FMC_D2_GPIO_CLK() ; FMC_D3_GPIO_CLK(); FMC_D4_GPIO_CLK() ; FMC_D5_GPIO_CLK() ; FMC_D6_GPIO_CLK(); FMC_D7_GPIO_CLK() ; FMC_D8_GPIO_CLK() ; FMC_D9_GPIO_CLK(); FMC_D10_GPIO_CLK(); FMC_D11_GPIO_CLK(); FMC_D12_GPIO_CLK();FMC_D13_GPIO_CLK(); FMC_D14_GPIO_CLK(); FMC_D15_GPIO_CLK();FMC_D16_GPIO_CLK(); FMC_D17_GPIO_CLK(); FMC_D18_GPIO_CLK();FMC_D19_GPIO_CLK(); FMC_D20_GPIO_CLK(); FMC_D21_GPIO_CLK();FMC_D22_GPIO_CLK(); FMC_D23_GPIO_CLK(); FMC_D24_GPIO_CLK();FMC_D25_GPIO_CLK(); FMC_D26_GPIO_CLK(); FMC_D27_GPIO_CLK();FMC_D28_GPIO_CLK(); FMC_D29_GPIO_CLK(); FMC_D30_GPIO_CLK();FMC_D31_GPIO_CLK(); /*控制信号线*/ FMC_CS_GPIO_CLK() ; FMC_BA0_GPIO_CLK(); FMC_BA1_GPIO_CLK() ; FMC_WE_GPIO_CLK() ; FMC_RAS_GPIO_CLK(); FMC_CAS_GPIO_CLK(); FMC_CLK_GPIO_CLK(); FMC_CKE_GPIO_CLK(); FMC_UDQM_GPIO_CLK(); FMC_LDQM_GPIO_CLK();FMC_UDQM2_GPIO_CLK();FMC_LDQM2_GPIO_CLK(); /*-- SDRAM IO 配置 -----------------------------------------------------*/ GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;//配置为复用功能 GPIO_InitStructure.Pull = GPIO_PULLUP; GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStructure.Alternate = GPIO_AF12_FMC; /*地址信号线 针对引脚配置*/ GPIO_InitStructure.Pin = FMC_A0_GPIO_PIN; HAL_GPIO_Init(FMC_A0_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A1_GPIO_PIN; HAL_GPIO_Init(FMC_A1_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A2_GPIO_PIN; HAL_GPIO_Init(FMC_A2_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A3_GPIO_PIN; HAL_GPIO_Init(FMC_A3_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A4_GPIO_PIN; HAL_GPIO_Init(FMC_A4_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A5_GPIO_PIN; HAL_GPIO_Init(FMC_A5_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A6_GPIO_PIN; HAL_GPIO_Init(FMC_A6_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A7_GPIO_PIN; HAL_GPIO_Init(FMC_A7_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A8_GPIO_PIN; HAL_GPIO_Init(FMC_A8_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A9_GPIO_PIN; HAL_GPIO_Init(FMC_A9_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A10_GPIO_PIN; HAL_GPIO_Init(FMC_A10_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A11_GPIO_PIN; HAL_GPIO_Init(FMC_A11_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_A12_GPIO_PIN; HAL_GPIO_Init(FMC_A12_GPIO_PORT, &GPIO_InitStructure); /*数据信号线 针对引脚配置*/ GPIO_InitStructure.Pin = FMC_D0_GPIO_PIN; HAL_GPIO_Init(FMC_D0_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D1_GPIO_PIN; HAL_GPIO_Init(FMC_D1_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D2_GPIO_PIN; HAL_GPIO_Init(FMC_D2_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D3_GPIO_PIN; HAL_GPIO_Init(FMC_D3_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D4_GPIO_PIN; HAL_GPIO_Init(FMC_D4_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D5_GPIO_PIN; HAL_GPIO_Init(FMC_D5_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D6_GPIO_PIN; HAL_GPIO_Init(FMC_D6_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D7_GPIO_PIN; HAL_GPIO_Init(FMC_D7_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D8_GPIO_PIN; HAL_GPIO_Init(FMC_D8_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D9_GPIO_PIN; HAL_GPIO_Init(FMC_D9_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D10_GPIO_PIN; HAL_GPIO_Init(FMC_D10_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D11_GPIO_PIN; HAL_GPIO_Init(FMC_D11_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D12_GPIO_PIN; HAL_GPIO_Init(FMC_D12_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D13_GPIO_PIN; HAL_GPIO_Init(FMC_D13_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D14_GPIO_PIN; HAL_GPIO_Init(FMC_D14_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D15_GPIO_PIN; HAL_GPIO_Init(FMC_D15_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D16_GPIO_PIN; HAL_GPIO_Init(FMC_D16_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D17_GPIO_PIN; HAL_GPIO_Init(FMC_D17_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D18_GPIO_PIN; HAL_GPIO_Init(FMC_D18_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D19_GPIO_PIN; HAL_GPIO_Init(FMC_D19_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D20_GPIO_PIN; HAL_GPIO_Init(FMC_D20_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D21_GPIO_PIN; HAL_GPIO_Init(FMC_D21_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D22_GPIO_PIN; HAL_GPIO_Init(FMC_D22_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D23_GPIO_PIN; HAL_GPIO_Init(FMC_D23_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D24_GPIO_PIN; HAL_GPIO_Init(FMC_D24_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D25_GPIO_PIN; HAL_GPIO_Init(FMC_D25_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D26_GPIO_PIN; HAL_GPIO_Init(FMC_D26_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D27_GPIO_PIN; HAL_GPIO_Init(FMC_D27_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D28_GPIO_PIN; HAL_GPIO_Init(FMC_D28_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D29_GPIO_PIN; HAL_GPIO_Init(FMC_D29_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D30_GPIO_PIN; HAL_GPIO_Init(FMC_D30_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_D31_GPIO_PIN; HAL_GPIO_Init(FMC_D31_GPIO_PORT, &GPIO_InitStructure); /*控制信号线*/ GPIO_InitStructure.Pin = FMC_CS_GPIO_PIN; HAL_GPIO_Init(FMC_CS_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_BA0_GPIO_PIN; HAL_GPIO_Init(FMC_BA0_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_BA1_GPIO_PIN; HAL_GPIO_Init(FMC_BA1_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_WE_GPIO_PIN; HAL_GPIO_Init(FMC_WE_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_RAS_GPIO_PIN; HAL_GPIO_Init(FMC_RAS_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_CAS_GPIO_PIN; HAL_GPIO_Init(FMC_CAS_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_CLK_GPIO_PIN; HAL_GPIO_Init(FMC_CLK_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_CKE_GPIO_PIN; HAL_GPIO_Init(FMC_CKE_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_UDQM_GPIO_PIN; HAL_GPIO_Init(FMC_UDQM_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_LDQM_GPIO_PIN; HAL_GPIO_Init(FMC_LDQM_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_UDQM2_GPIO_PIN; HAL_GPIO_Init(FMC_UDQM2_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.Pin = FMC_LDQM2_GPIO_PIN; HAL_GPIO_Init(FMC_LDQM2_GPIO_PORT, &GPIO_InitStructure); } /** * @brief 对SDRAM芯片进行初始化配置 * @param None. * @retval None. */ static void SDRAM_InitSequence(void) { uint32_t tmpr = 0; /* Step 1 ----------------------------------------------------------------*/ /* 配置命令：开启提供给SDRAM的时钟 */ Command.CommandMode = FMC_SDRAM_CMD_CLK_ENABLE; Command.CommandTarget = FMC_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 1; Command.ModeRegisterDefinition = 0; /* 发送配置命令 */ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT); /* Step 2: 延时100us */ SDRAM_delay(1); /* Step 3 ----------------------------------------------------------------*/ /* 配置命令：对所有的bank预充电 */ Command.CommandMode = FMC_SDRAM_CMD_PALL; Command.CommandTarget = FMC_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 1; Command.ModeRegisterDefinition = 0; /* 发送配置命令 */ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT); /* Step 4 ----------------------------------------------------------------*/ /* 配置命令：自动刷新 */ Command.CommandMode = FMC_SDRAM_CMD_AUTOREFRESH_MODE; Command.CommandTarget = FMC_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 8; Command.ModeRegisterDefinition = 0; /* 发送配置命令 */ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT); /* Step 5 ----------------------------------------------------------------*/ /* 设置sdram寄存器配置 */ tmpr = (uint32_t)SDRAM_MODEREG_BURST_LENGTH_1 | SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL | SDRAM_MODEREG_CAS_LATENCY_3 | SDRAM_MODEREG_OPERATING_MODE_STANDARD | SDRAM_MODEREG_WRITEBURST_MODE_SINGLE; /* 配置命令：设置SDRAM寄存器 */ Command.CommandMode = FMC_SDRAM_CMD_LOAD_MODE; Command.CommandTarget = FMC_COMMAND_TARGET_BANK; Command.AutoRefreshNumber = 1; Command.ModeRegisterDefinition = tmpr; /* 发送配置命令 */ HAL_SDRAM_SendCommand(&sdramHandle, &Command, SDRAM_TIMEOUT); /* Step 6 ----------------------------------------------------------------*/ /* 设置刷新计数器 */ /* 刷新周期=64ms/4096行=15.625us */ /* COUNT=(15.625us x Freq) - 20 */ /* 设置自刷新速率 */ HAL_SDRAM_ProgramRefreshRate(&sdramHandle, 1855); } /** * @brief 初始化配置使用SDRAM的FMC及GPIO接口， * 本函数在SDRAM读写操作前需要被调用 * @param None * @retval None */ void SDRAM_Init(void) { FMC_SDRAM_TimingTypeDef SdramTiming; RCC_PeriphCLKInitTypeDef RCC_PeriphClkInit; /* 配置FMC接口相关的 GPIO*/ SDRAM_GPIO_Config(); /* 配置SDRAM时钟源*/ RCC_PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_FMC; RCC_PeriphClkInit.PLL2.PLL2M = 5; RCC_PeriphClkInit.PLL2.PLL2N = 144; RCC_PeriphClkInit.PLL2.PLL2P = 2; RCC_PeriphClkInit.PLL2.PLL2Q = 2; RCC_PeriphClkInit.PLL2.PLL2R = 3; RCC_PeriphClkInit.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_2; RCC_PeriphClkInit.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE; RCC_PeriphClkInit.PLL2.PLL2FRACN = 0; RCC_PeriphClkInit.FmcClockSelection = RCC_FMCCLKSOURCE_PLL2; if (HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInit) != HAL_OK) { while(1); } /* 使能 FMC 时钟 */ __FMC_CLK_ENABLE(); /*执行SDRAM1的内存初始化序列 */ hsdram1.Instance = FMC_SDRAM_DEVICE; /* hsdram1结构体初始化*/ hsdram1.Init.SDBank = FMC_SDRAM_BANK2; hsdram1.Init.ColumnBitsNumber = FMC_SDRAM_COLUMN_BITS_NUM_9;//SDRAM列数 hsdram1.Init.RowBitsNumber = FMC_SDRAM_ROW_BITS_NUM_13;//SDRAM行数 hsdram1.Init.MemoryDataWidth = SDRAM_MEMORY_WIDTH;//总线数据宽度为32位 hsdram1.Init.InternalBankNumber = FMC_SDRAM_INTERN_BANKS_NUM_4;//4个扇区 hsdram1.Init.CASLatency = FMC_SDRAM_CAS_LATENCY_3;//列地址选通信延时 hsdram1.Init.WriteProtection = FMC_SDRAM_WRITE_PROTECTION_DISABLE;//禁止写保护 hsdram1.Init.SDClockPeriod = FMC_SDRAM_CLOCK_PERIOD_2;//SDRAM时钟120MHz hsdram1.Init.ReadBurst = FMC_SDRAM_RBURST_ENABLE; //使能突发传输模式 hsdram1.Init.ReadPipeDelay = FMC_SDRAM_RPIPE_DELAY_1; //读通道延时 /* SDRAM时序 */ SdramTiming.LoadToActiveDelay = 2;//加载模式寄存器命令与行有效或刷新命令之间的延迟 SdramTiming.ExitSelfRefreshDelay = 8;//退出自我刷新到行有效命令之间的延迟 SdramTiming.SelfRefreshTime = 5;//行有效与预充电命令之间的延迟 SdramTiming.RowCycleDelay = 8;//两个刷新命令或两个行有效命令之间的延迟 SdramTiming.WriteRecoveryTime = 2;//写入命令到预充电命令之间的延迟 SdramTiming.RPDelay = 2;//预充电与行有效命令之间的延迟 SdramTiming.RCDDelay = 2;//行有效与列读写命令之间的延迟 HAL_SDRAM_Init(&hsdram1, &SdramTiming); /* FMC SDRAM 设备时序初始化 */ SDRAM_InitSequence(); } /** * @brief 以“字”为单位向sdram写入数据 * @param pBuffer: 指向数据的指针 * @param uwWriteAddress: 要写入的SDRAM内部地址 * @param uwBufferSize: 要写入数据大小 * @retval None. */ void SDRAM_WriteBuffer(uint32_t* pBuffer, uint32_t uwWriteAddress, uint32_t uwBufferSize) { __IO uint32_t write_pointer = (uint32_t)uwWriteAddress; /* 禁止写保护 */ HAL_SDRAM_WriteProtection_Disable(&hsdram1); /* 检查SDRAM标志，等待至SDRAM空闲 */ while(HAL_SDRAM_GetState(&hsdram1) != RESET) { } /* 循环写入数据 */ for (; uwBufferSize != 0; uwBufferSize--) { /* 发送数据到SDRAM */ *(uint32_t *) (SDRAM_BANK_ADDR + write_pointer) = *pBuffer++; /* 地址自增*/ write_pointer += 4; } } /** * @brief 从SDRAM中读取数据 * @param pBuffer: 指向存储数据的buffer * @param ReadAddress: 要读取数据的地十 * @param uwBufferSize: 要读取的数据大小 * @retval None. */ void SDRAM_ReadBuffer(uint32_t* pBuffer, uint32_t uwReadAddress, uint32_t uwBufferSize) { __IO uint32_t write_pointer = (uint32_t)uwReadAddress; /* 检查SDRAM标志，等待至SDRAM空闲 */ while ( HAL_SDRAM_GetState(&hsdram1) != RESET) { } /*读取数据 */ for(; uwBufferSize != 0x00; uwBufferSize--) { *pBuffer++ = *(__IO uint32_t *)(SDRAM_BANK_ADDR + write_pointer ); /* 地址自增*/ write_pointer += 4; } } /** * @brief 测试SDRAM是否正常 * @param None * @retval 正常返回1，异常返回0 */ uint8_t SDRAM_Test(void) { /*写入数据计数器*/ uint32_t counter=0; /* 8位的数据 */ uint8_t ubWritedata_8b = 0, ubReaddata_8b = 0; /* 16位的数据 */ uint16_t uhWritedata_16b = 0, uhReaddata_16b = 0; SDRAM_INFO("正在检测SDRAM，以8位、16位的方式读写sdram..."); /*按8位格式读写数据，并校验*/ /* 把SDRAM数据全部重置为0 ，SDRAM_SIZE是以8位为单位的 */ for (counter = 0x00; counter < SDRAM_SIZE; counter++) { *(__IO uint8_t*) (SDRAM_BANK_ADDR + counter) = (uint8_t)0x0; } /* 向整个SDRAM写入数据 8位 */ for (counter = 0; counter < SDRAM_SIZE; counter++) { *(__IO uint8_t*) (SDRAM_BANK_ADDR + counter) = (uint8_t)(ubWritedata_8b + counter); } /* 读取 SDRAM 数据并检测*/ for(counter = 0; counter