322 lines
10 KiB
C
322 lines
10 KiB
C
//系统初始化
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#include "sys.h"
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/**
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* @brief 配置 MPU
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*/
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void MPU_Config(void)
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{
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MPU_Region_InitTypeDef MPU_InitStruct;
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/* 禁止 MPU */
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HAL_MPU_Disable();
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/* 配置AXI SRAM的MPU属性为Write through, read allocate，no write allocate */
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MPU_InitStruct.Enable = MPU_REGION_ENABLE;
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MPU_InitStruct.BaseAddress = 0x24000000;
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MPU_InitStruct.Size = MPU_REGION_SIZE_512KB;
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MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
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MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
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MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
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MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
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MPU_InitStruct.Number = MPU_REGION_NUMBER0;
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MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
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MPU_InitStruct.SubRegionDisable = 0x00;
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MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
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HAL_MPU_ConfigRegion(&MPU_InitStruct);
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/* 配置FMC扩展IO的MPU属性为Device或者Strongly Ordered */
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MPU_InitStruct.Enable = MPU_REGION_ENABLE;
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MPU_InitStruct.BaseAddress = 0x60000000;
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MPU_InitStruct.Size = ARM_MPU_REGION_SIZE_64KB;
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MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
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MPU_InitStruct.IsBufferable = MPU_ACCESS_BUFFERABLE;
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MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE; /* 不能用MPU_ACCESS_CACHEABLE;会出现2次CS、WE信号 */
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MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
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MPU_InitStruct.Number = MPU_REGION_NUMBER1;
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MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
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MPU_InitStruct.SubRegionDisable = 0x00;
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MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
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HAL_MPU_ConfigRegion(&MPU_InitStruct);
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/* 配置SRAM4的属性为Write through, read allocate，no write allocate */
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MPU_InitStruct.Enable = MPU_REGION_ENABLE;
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MPU_InitStruct.BaseAddress = 0x38000000;
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MPU_InitStruct.Size = ARM_MPU_REGION_SIZE_64KB;
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MPU_InitStruct.AccessPermission = MPU_REGION_FULL_ACCESS;
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MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
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MPU_InitStruct.IsCacheable = MPU_ACCESS_CACHEABLE;
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MPU_InitStruct.IsShareable = MPU_ACCESS_NOT_SHAREABLE;
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MPU_InitStruct.Number = MPU_REGION_NUMBER2;
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MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
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MPU_InitStruct.SubRegionDisable = 0x00;
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MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_ENABLE;
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HAL_MPU_ConfigRegion(&MPU_InitStruct);
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/*使能 MPU */
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HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
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}
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/**
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* @brief 使能 L1-Cache
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*/
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void Cache_Enable(void)
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{
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SCB_EnableICache(); //使能 I-Cache
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SCB_EnableDCache(); //使能 D-Cache
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SCB->CACR |= 1 << 2; //强制 D-Cache透写
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}
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/**
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* @brief 初始化系统时钟
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* @param plln: PLL1 倍频系数（PLL倍频），取值范围：4~512
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* @param pllm: PLL1 预分频系数（进PLL之前的分频），取值范围：2~63
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* @param pllp: PLL1 的 p 分频系数（PLL之后的分频），分频后作为系统时钟，取值范围：2~128（且必须是 2 的倍数）
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* @param pllq: PLL1 的 q 分频系数（PLL之后的分频），取值范围：1~128.
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* @retval 成功返回 0，失败返回 1
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*/
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uint8_t Clock_Init(uint32_t plln, uint32_t pllm, uint32_t pllp, uint32_t pllq)
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{
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HAL_StatusTypeDef ret = HAL_OK;
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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MODIFY_REG(PWR->CR3, PWR_CR3_SCUEN, 0);
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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while ((PWR->D3CR & (PWR_D3CR_VOSRDY)) != PWR_D3CR_VOSRDY)
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{
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}
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
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RCC_OscInitStruct.CSIState = RCC_CSI_OFF;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLN = plln;
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RCC_OscInitStruct.PLL.PLLM = pllm;
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RCC_OscInitStruct.PLL.PLLP = pllp;
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RCC_OscInitStruct.PLL.PLLQ = pllq;
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RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
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ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
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if (ret != HAL_OK)
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return 1;
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// QSPI_Enable_Memmapmode(); //QSPI内存映射模式,需要在时钟初始化之前开启,否则会有各种问题
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK |
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RCC_CLOCKTYPE_HCLK |
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RCC_CLOCKTYPE_D1PCLK1 |
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RCC_CLOCKTYPE_PCLK1 |
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RCC_CLOCKTYPE_PCLK2 |
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RCC_CLOCKTYPE_D3PCLK1);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV4;
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ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);
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if (ret != HAL_OK)
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return 1;
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__HAL_RCC_CSI_ENABLE();
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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HAL_EnableCompensationCell();
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return 0;
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}
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/**
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* @brief 判断 I_Cache 是否打开
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* @retval 关闭返回 0，打开返回 1
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*/
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uint8_t Get_ICacheSta(void)
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{
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uint8_t sta;
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sta = ((SCB->CCR) >> 17) & 0X01;
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return sta;
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}
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/**
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* @brief 判断 I_Dache 是否打开
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* @retval 关闭返回 0，打开返回 1
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*/
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uint8_t Get_DCacheSta(void)
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{
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uint8_t sta;
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sta = ((SCB->CCR) >> 16) & 0X01;
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return sta;
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}
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/**
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* @brief QSPI 进入内存映射模式
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*/
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void QSPI_Enable_Memmapmode(void)
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{
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uint32_t tempreg = 0;
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volatile uint32_t *data_reg = &QUADSPI->DR;
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GPIO_InitTypeDef qspi_gpio;
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RCC->AHB4ENR |= 1 << 1; //使能 PORTB 时钟
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RCC->AHB4ENR |= 1 << 5; //使能 PORTF 时钟
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RCC->AHB3ENR |= 1 << 14; //QSPI 时钟使能
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qspi_gpio.Pin = GPIO_PIN_6; //PB6 AF10
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qspi_gpio.Mode = GPIO_MODE_AF_PP;
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qspi_gpio.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
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qspi_gpio.Pull = GPIO_NOPULL;
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qspi_gpio.Alternate = GPIO_AF10_QUADSPI;
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HAL_GPIO_Init(GPIOB, &qspi_gpio);
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qspi_gpio.Pin = GPIO_PIN_2; //PB2 AF9
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qspi_gpio.Alternate = GPIO_AF9_QUADSPI;
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HAL_GPIO_Init(GPIOB, &qspi_gpio);
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qspi_gpio.Pin = GPIO_PIN_6 | GPIO_PIN_7; //PF6 7 AF9
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qspi_gpio.Alternate = GPIO_AF9_QUADSPI;
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HAL_GPIO_Init(GPIOF, &qspi_gpio);
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qspi_gpio.Pin = GPIO_PIN_8 | GPIO_PIN_9; //PF8 9 AF10
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qspi_gpio.Alternate = GPIO_AF10_QUADSPI;
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HAL_GPIO_Init(GPIOF, &qspi_gpio);
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//QSPI 设置，参考 QSPI 实验的 QSPI_Init 函数
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RCC->AHB3RSTR |= 1 << 14; //复位 QSPI
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RCC->AHB3RSTR &= ~(1 << 14); //停止复位 QSPI
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while (QUADSPI->SR & (1 << 5))
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; //等待 BUSY 位清零
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QUADSPI->CR = 0X01000310; //设置 CR 寄存器
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QUADSPI->DCR = 0X00160401; //设置 DCR 寄存器
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QUADSPI->CR |= 1 << 0; //使能 QSPI
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//注意：QSPI QE 位的使能，在 QSPI 烧写算法里面，就已经设置了
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//所以，这里可以不用设置 QE 位，否则需要加入对 QE 位置 1 的代码
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//不过，代码必须通过仿真器下载，直接烧录到外部 QSPI FLASH，是不可用的
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//如果想直接烧录到外部 QSPI FLASH 也可以用，则需要在这里添加 QE 位置 1 的代码
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//W25QXX 进入 QPI 模式（0X38指令）
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while (QUADSPI->SR & (1 << 5))
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; //等待 BUSY 位清零
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QUADSPI->CCR = 0X00000138; //发送 0X38 指令，W25QXX 进入 QPI 模式
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while ((QUADSPI->SR & (1 << 1)) == 0)
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; //等待指令发送完成
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QUADSPI->FCR |= 1 << 1; //清除发送完成标志位
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//W25QXX 写使能（0X06指令）
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while (QUADSPI->SR & (1 << 5))
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; //等待 BUSY 位清零
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QUADSPI->CCR = 0X00000106; //发送 0X06 指令，W25QXX 写使能
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while ((QUADSPI->SR & (1 << 1)) == 0)
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; //等待指令发送完成
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QUADSPI->FCR |= 1 << 1; //清除发送完成标志位
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//W25QXX 设置 QPI 相关读参数（0XC0）
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while (QUADSPI->SR & (1 << 5))
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; //等待 BUSY 位清零
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QUADSPI->CCR = 0X030003C0; //发送 0XC0 指令，W25QXX 读参数设置
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QUADSPI->DLR = 0;
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while ((QUADSPI->SR & (1 << 2)) == 0)
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; //等待 FTF
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*(volatile uint8_t *)data_reg = 3 << 4; //设置 P4&P5=11，8 个 dummy clocks，104M
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QUADSPI->CR |= 1 << 2; //终止传输
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while ((QUADSPI->SR & (1 << 1)) == 0)
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; //等待数据发送完成
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QUADSPI->FCR |= 1 << 1; //清除发送完成标志位
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while (QUADSPI->SR & (1 << 5))
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; //等待 BUSY 位清零
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//MemroyMap 模式设置
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while (QUADSPI->SR & (1 << 5))
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; //等待 BUSY 位清零
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QUADSPI->ABR = 0; //交替字节设置为 0，实际上就是 W25Q 0XEB 指令的 M0~M7=0
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tempreg = 0XEB; //INSTRUCTION[7:0]=0XEB，发送 0XEB 指令（Fast Read QUAD I/O）
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tempreg |= 3 << 8; //IMODE[1:0]=3，四线传输指令
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tempreg |= 3 << 10; //ADDRESS[1:0]=3，四线传输地址
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tempreg |= 2 << 12; //ADSIZE[1:0]=2，24位地址长度
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tempreg |= 3 << 14; //ABMODE[1:0]=3，四线传输交替字节
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tempreg |= 0 << 16; //ABSIZE[1:0]=0，8位交替字节 (M0~M7)
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tempreg |= 6 << 18; //DCYC[4:0]=6，6个dummy周期
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tempreg |= 3 << 24; //DMODE[1:0]=3，四线传输数据
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tempreg |= 3 << 26; //FMODE[1:0]=3，内存映射模式
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QUADSPI->CCR = tempreg; //设置CCR寄存器
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//设置 QSPI FLASH 空间的MPU保护
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SCB->SHCSR &= ~(1 << 16); //禁止 MemManage
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MPU->CTRL &= ~(1 << 0); //禁止 MPU
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MPU->RNR = 0; //设置保护区域编号为 0 (1~7 可以给其他内存用)
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MPU->RBAR = 0X90000000; //基地址为 0X9000 000，即 QSPI 的起始地址
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MPU->RASR = 0X0303002D; //设置相关保护参数(禁止共用，允许 cache，允许缓冲)
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MPU->CTRL = (1 << 2) | (1 << 0); //使能 PRIVDEFENA，使能 MPU
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SCB->SHCSR |= 1 << 16; //使能 MemManage
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}
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#if defined(__clang__) //使用V6编译器(clang)
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//THUMB指令不支持汇编内联
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//采用如下方法实现执行汇编指令WFI
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void __attribute__((noinline)) WFI_SET(void)
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{
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__asm__("wfi");
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}
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//关闭所有中断(但是不包括fault和NMI中断)
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void __attribute__((noinline)) INTX_DISABLE(void)
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{
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__asm__("cpsid i \t\n"
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"bx lr");
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}
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//开启所有中断
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void __attribute__((noinline)) INTX_ENABLE(void)
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{
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__asm__("cpsie i \t\n"
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"bx lr");
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}
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//设置栈顶地址
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//addr:栈顶地址
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void __attribute__((noinline)) MSR_MSP(uint32_t addr)
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{
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__asm__("msr msp, r0 \t\n"
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"bx r14");
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}
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#elif defined(__CC_ARM) //使用V5编译器(ARMCC)
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//THUMB指令不支持汇编内联
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//采用如下方法实现执行汇编指令WFI
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__asm void WFI_SET(void)
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{
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WFI;
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}
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//关闭所有中断(但是不包括fault和NMI中断)
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__asm void INTX_DISABLE(void)
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{
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CPSID I
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BX LR
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}
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//开启所有中断
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__asm void INTX_ENABLE(void)
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{
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CPSIE I
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BX LR
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}
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//设置栈顶地址
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//addr:栈顶地址
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__asm void MSR_MSP(uint32_t addr)
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{
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MSR MSP, r0 //set Main Stack value
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BX r14
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}
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#endif
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