板子
       单片机：STM32F446
       PSRAM: APS6404L    (PageSize=1024Bytes)

硬件接线
    PB2:       QSPI_CLK    6
    PC11:      QSPI_NCS    1
    PE7:       QSPI_IO0    5
    PE8:      QSPI_IO1    2
    PE9:     QSPI_IO2    3
    PE10:    QSPI_IO3    7

软件环境
        HAL库

问题:

1: 能通信上,但QPI模式只能工作在2线数据, 4线数据则数据不正确
2: 写入后立即读出同一地址的数据没问题；但往前读则读到的数据是最后写入的数据
    猜测是Page的机制问题，欧博官网如何跨页读取？

初始化代码：

int QSPI_PSRAM_Init(void) { QSPIHandle.Instance = QUADSPI; QSPIHandle.Init.ClockPrescaler = 2; QSPIHandle.Init.FifoThreshold = 4; QSPIHandle.Init.SampleShifting = QSPI_SAMPLE_SHIFTING_NONE; QSPIHandle.Init.FlashSize = 22;//64Mbits=8Mbtye=2^23.size取22。 QSPIHandle.Init.ChipSelectHighTime = QSPI_CS_HIGH_TIME_2_CYCLE; QSPIHandle.Init.ClockMode = QSPI_CLOCK_MODE_0; QSPIHandle.Init.FlashID = QSPI_FLASH_ID_2; QSPIHandle.Init.DualFlash = QSPI_DUALFLASH_DISABLE; //禁止双闪存模式 if (HAL_QSPI_Init(&QSPIHandle) != HAL_OK) { return PSRAM_ERR_INIT; } QSPI_PSRAM_Resetenable(&QSPIHandle); QSPI_PSRAM_Reset(&QSPIHandle); HAL_Delay(1); return PSRAM_OK; } void HAL_QSPI_MspInit(QSPI_HandleTypeDef* hqspi) { GPIO_InitTypeDef GPIO_InitStruct = {0}; //static DMA_HandleTypeDef hdma; if(hqspi->Instance==QUADSPI) { /* USER CODE END QUADSPI_MspInit 0 */ /* Peripheral clock enable */ __HAL_RCC_QSPI_CLK_ENABLE(); /* Reset the QuadSPI memory interface */ __HAL_RCC_QSPI_FORCE_RESET(); __HAL_RCC_QSPI_RELEASE_RESET(); __HAL_RCC_GPIOB_CLK_ENABLE(); __HAL_RCC_GPIOE_CLK_ENABLE(); __HAL_RCC_GPIOC_CLK_ENABLE(); /* Enable DMA clock */ QSPI_DMA_CLK_ENABLE(); /**QUADSPI GPIO Configuration PB2 ------> QUADSPI_CLK PE7 ------> QUADSPI_BK2_IO0 PE8 ------> QUADSPI_BK2_IO1 PE9 ------> QUADSPI_BK2_IO2 PE10 ------> QUADSPI_BK2_IO3 PC11 ------> QUADSPI_BK2_NCS */ GPIO_InitStruct.Pin = GPIO_PIN_2; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF9_QSPI; HAL_GPIO_Init(GPIOB, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; //GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF10_QSPI; HAL_GPIO_Init(GPIOE, &GPIO_InitStruct); GPIO_InitStruct.Pin = GPIO_PIN_11; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_PULLUP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH; GPIO_InitStruct.Alternate = GPIO_AF9_QSPI; HAL_GPIO_Init(GPIOC, &GPIO_InitStruct); /* USER CODE BEGIN QUADSPI_MspInit 1 */ /* USER CODE END QUADSPI_MspInit 1 */ HAL_NVIC_SetPriority(QUADSPI_IRQn, 0x0F, 0); HAL_NVIC_EnableIRQ(QUADSPI_IRQn); //中断使能 //__HAL_QSPI_ENABLE_IT(hqspi, QSPI_IT_TC); } }

读写代码

int QSPI_PSRAM_ReadPage(QSPI_HandleTypeDef *hQspi,uint8_t *pData,uint32_t FirstAddr, uint32_t BufSize) { QSPI_Send_CMD(hQspi,PSRAM_CMD_READ_QUAD,FirstAddr,PSRAM_QPI_READ_DUMCYCLES,QSPI_INSTRUCTION_4_LINES,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_2_LINES,BufSize); return _Read(hQspi,pData); } int QSPI_PSRAM_WritePage(QSPI_HandleTypeDef *hQspi,uint8_t *pData,uint32_t FirstAddr, uint32_t BufSize) { QSPI_Send_CMD(hQspi,PSRAM_CMD_WRITE_QUAD,FirstAddr,PSRAM_QPI_WRITE_DUMCYCLES,QSPI_INSTRUCTION_4_LINES,QSPI_ADDRESS_1_LINE,QSPI_ADDRESS_24_BITS,QSPI_DATA_2_LINES,BufSize); hQspi->Instance->DLR = BufSize-1; return _Write(hQspi,pData); }

测试代码：

这样读写是成功的：

for (i=0; i<8; i++) { memset(temp,i%0xff,1024); r1 = QSPI_PSRAM_WritePage(&QSPIHandle,(uint8_t*)temp,i*1024,1024); memset(temp, 0, 1024); r1 = QSPI_PSRAM_ReadPage(&QSPIHandle,(uint8_t*)temp, i*1024, 1024); //测试发现：写1块立即读该块，都是成功的！ if (temp[123]!=(i%0xff)) { e++; printf("err:%d times, i=%d -->",e, i); //只要不打这个就是好的 } }

这样写，欧博再读，读到的数据就总是最后写入的数据：

//写入： for (i=0; i<8; i++) { memset(temp,i%0xff,1024); QSPI_PSRAM_WritePage(&QSPIHandle,(uint8_t*)temp,i*1024,1024); } //读出： for (i=0; i<8; i++) { memset(temp, 0, 1024); QSPI_PSRAM_ReadPage(&QSPIHandle,(uint8_t*)temp, i*1024, 1024); if (temp[30]!=(i%0xff)) { printf("%4d: ",i*1024); ShowBuffer(temp,32); } }