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Diffstat (limited to 'tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_spi_flash.c')
| -rw-r--r-- | tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_spi_flash.c | 541 |
1 files changed, 0 insertions, 541 deletions
diff --git a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_spi_flash.c b/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_spi_flash.c deleted file mode 100644 index 878144d..0000000 --- a/tmp/STM32F10x_StdPeriph_Lib_V3.5.0/Utilities/STM32_EVAL/Common/stm32_eval_spi_flash.c +++ /dev/null @@ -1,541 +0,0 @@ -/** - ****************************************************************************** - * @file stm32_eval_spi_flash.c - * @author MCD Application Team - * @version V4.5.0 - * @date 07-March-2011 - * @brief This file provides a set of functions needed to manage the SPI M25Pxxx - * FLASH memory mounted on STM32xx-EVAL board (refer to stm32_eval.h - * to know about the boards supporting this memory). - * It implements a high level communication layer for read and write - * from/to this memory. The needed STM32 hardware resources (SPI and - * GPIO) are defined in stm32xx_eval.h file, and the initialization is - * performed in sFLASH_LowLevel_Init() function declared in stm32xx_eval.c - * file. - * You can easily tailor this driver to any other development board, - * by just adapting the defines for hardware resources and - * sFLASH_LowLevel_Init() function. - * - * +-----------------------------------------------------------+ - * | Pin assignment | - * +-----------------------------+---------------+-------------+ - * | STM32 SPI Pins | sFLASH | Pin | - * +-----------------------------+---------------+-------------+ - * | sFLASH_CS_PIN | ChipSelect(/S)| 1 | - * | sFLASH_SPI_MISO_PIN / MISO | DataOut(Q) | 2 | - * | | VCC | 3 (3.3 V)| - * | | GND | 4 (0 V) | - * | sFLASH_SPI_MOSI_PIN / MOSI | DataIn(D) | 5 | - * | sFLASH_SPI_SCK_PIN / SCLK | Clock(C) | 6 | - * | | VCC | 7 (3.3 V)| - * | | VCC | 8 (3.3 V)| - * +-----------------------------+---------------+-------------+ - ****************************************************************************** - * @attention - * - * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS - * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE - * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY - * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING - * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE - * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. - * - * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "stm32_eval_spi_flash.h" - -/** @addtogroup Utilities - * @{ - */ - -/** @addtogroup STM32_EVAL - * @{ - */ - -/** @addtogroup Common - * @{ - */ - -/** @addtogroup STM32_EVAL_SPI_FLASH - * @brief This file includes the M25Pxxx SPI FLASH driver of STM32-EVAL boards. - * @{ - */ - -/** @defgroup STM32_EVAL_SPI_FLASH_Private_Types - * @{ - */ -/** - * @} - */ - - -/** @defgroup STM32_EVAL_SPI_FLASH_Private_Defines - * @{ - */ -/** - * @} - */ - -/** @defgroup STM32_EVAL_SPI_FLASH_Private_Macros - * @{ - */ -/** - * @} - */ - - -/** @defgroup STM32_EVAL_SPI_FLASH_Private_Variables - * @{ - */ -/** - * @} - */ - - -/** @defgroup STM32_EVAL_SPI_FLASH_Private_Function_Prototypes - * @{ - */ -/** - * @} - */ - - -/** @defgroup STM32_EVAL_SPI_FLASH_Private_Functions - * @{ - */ - -/** - * @brief DeInitializes the peripherals used by the SPI FLASH driver. - * @param None - * @retval None - */ -void sFLASH_DeInit(void) -{ - sFLASH_LowLevel_DeInit(); -} - -/** - * @brief Initializes the peripherals used by the SPI FLASH driver. - * @param None - * @retval None - */ -void sFLASH_Init(void) -{ - SPI_InitTypeDef SPI_InitStructure; - - sFLASH_LowLevel_Init(); - - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); - - /*!< SPI configuration */ - SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; - SPI_InitStructure.SPI_Mode = SPI_Mode_Master; - SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; - SPI_InitStructure.SPI_CPOL = SPI_CPOL_High; - SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; - SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; -#if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL) - SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2; -#else - SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; -#endif - - SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; - SPI_InitStructure.SPI_CRCPolynomial = 7; - SPI_Init(sFLASH_SPI, &SPI_InitStructure); - - /*!< Enable the sFLASH_SPI */ - SPI_Cmd(sFLASH_SPI, ENABLE); -} - -/** - * @brief Erases the specified FLASH sector. - * @param SectorAddr: address of the sector to erase. - * @retval None - */ -void sFLASH_EraseSector(uint32_t SectorAddr) -{ - /*!< Send write enable instruction */ - sFLASH_WriteEnable(); - - /*!< Sector Erase */ - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - /*!< Send Sector Erase instruction */ - sFLASH_SendByte(sFLASH_CMD_SE); - /*!< Send SectorAddr high nibble address byte */ - sFLASH_SendByte((SectorAddr & 0xFF0000) >> 16); - /*!< Send SectorAddr medium nibble address byte */ - sFLASH_SendByte((SectorAddr & 0xFF00) >> 8); - /*!< Send SectorAddr low nibble address byte */ - sFLASH_SendByte(SectorAddr & 0xFF); - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); - - /*!< Wait the end of Flash writing */ - sFLASH_WaitForWriteEnd(); -} - -/** - * @brief Erases the entire FLASH. - * @param None - * @retval None - */ -void sFLASH_EraseBulk(void) -{ - /*!< Send write enable instruction */ - sFLASH_WriteEnable(); - - /*!< Bulk Erase */ - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - /*!< Send Bulk Erase instruction */ - sFLASH_SendByte(sFLASH_CMD_BE); - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); - - /*!< Wait the end of Flash writing */ - sFLASH_WaitForWriteEnd(); -} - -/** - * @brief Writes more than one byte to the FLASH with a single WRITE cycle - * (Page WRITE sequence). - * @note The number of byte can't exceed the FLASH page size. - * @param pBuffer: pointer to the buffer containing the data to be written - * to the FLASH. - * @param WriteAddr: FLASH's internal address to write to. - * @param NumByteToWrite: number of bytes to write to the FLASH, must be equal - * or less than "sFLASH_PAGESIZE" value. - * @retval None - */ -void sFLASH_WritePage(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) -{ - /*!< Enable the write access to the FLASH */ - sFLASH_WriteEnable(); - - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - /*!< Send "Write to Memory " instruction */ - sFLASH_SendByte(sFLASH_CMD_WRITE); - /*!< Send WriteAddr high nibble address byte to write to */ - sFLASH_SendByte((WriteAddr & 0xFF0000) >> 16); - /*!< Send WriteAddr medium nibble address byte to write to */ - sFLASH_SendByte((WriteAddr & 0xFF00) >> 8); - /*!< Send WriteAddr low nibble address byte to write to */ - sFLASH_SendByte(WriteAddr & 0xFF); - - /*!< while there is data to be written on the FLASH */ - while (NumByteToWrite--) - { - /*!< Send the current byte */ - sFLASH_SendByte(*pBuffer); - /*!< Point on the next byte to be written */ - pBuffer++; - } - - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); - - /*!< Wait the end of Flash writing */ - sFLASH_WaitForWriteEnd(); -} - -/** - * @brief Writes block of data to the FLASH. In this function, the number of - * WRITE cycles are reduced, using Page WRITE sequence. - * @param pBuffer: pointer to the buffer containing the data to be written - * to the FLASH. - * @param WriteAddr: FLASH's internal address to write to. - * @param NumByteToWrite: number of bytes to write to the FLASH. - * @retval None - */ -void sFLASH_WriteBuffer(uint8_t* pBuffer, uint32_t WriteAddr, uint16_t NumByteToWrite) -{ - uint8_t NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0, temp = 0; - - Addr = WriteAddr % sFLASH_SPI_PAGESIZE; - count = sFLASH_SPI_PAGESIZE - Addr; - NumOfPage = NumByteToWrite / sFLASH_SPI_PAGESIZE; - NumOfSingle = NumByteToWrite % sFLASH_SPI_PAGESIZE; - - if (Addr == 0) /*!< WriteAddr is sFLASH_PAGESIZE aligned */ - { - if (NumOfPage == 0) /*!< NumByteToWrite < sFLASH_PAGESIZE */ - { - sFLASH_WritePage(pBuffer, WriteAddr, NumByteToWrite); - } - else /*!< NumByteToWrite > sFLASH_PAGESIZE */ - { - while (NumOfPage--) - { - sFLASH_WritePage(pBuffer, WriteAddr, sFLASH_SPI_PAGESIZE); - WriteAddr += sFLASH_SPI_PAGESIZE; - pBuffer += sFLASH_SPI_PAGESIZE; - } - - sFLASH_WritePage(pBuffer, WriteAddr, NumOfSingle); - } - } - else /*!< WriteAddr is not sFLASH_PAGESIZE aligned */ - { - if (NumOfPage == 0) /*!< NumByteToWrite < sFLASH_PAGESIZE */ - { - if (NumOfSingle > count) /*!< (NumByteToWrite + WriteAddr) > sFLASH_PAGESIZE */ - { - temp = NumOfSingle - count; - - sFLASH_WritePage(pBuffer, WriteAddr, count); - WriteAddr += count; - pBuffer += count; - - sFLASH_WritePage(pBuffer, WriteAddr, temp); - } - else - { - sFLASH_WritePage(pBuffer, WriteAddr, NumByteToWrite); - } - } - else /*!< NumByteToWrite > sFLASH_PAGESIZE */ - { - NumByteToWrite -= count; - NumOfPage = NumByteToWrite / sFLASH_SPI_PAGESIZE; - NumOfSingle = NumByteToWrite % sFLASH_SPI_PAGESIZE; - - sFLASH_WritePage(pBuffer, WriteAddr, count); - WriteAddr += count; - pBuffer += count; - - while (NumOfPage--) - { - sFLASH_WritePage(pBuffer, WriteAddr, sFLASH_SPI_PAGESIZE); - WriteAddr += sFLASH_SPI_PAGESIZE; - pBuffer += sFLASH_SPI_PAGESIZE; - } - - if (NumOfSingle != 0) - { - sFLASH_WritePage(pBuffer, WriteAddr, NumOfSingle); - } - } - } -} - -/** - * @brief Reads a block of data from the FLASH. - * @param pBuffer: pointer to the buffer that receives the data read from the FLASH. - * @param ReadAddr: FLASH's internal address to read from. - * @param NumByteToRead: number of bytes to read from the FLASH. - * @retval None - */ -void sFLASH_ReadBuffer(uint8_t* pBuffer, uint32_t ReadAddr, uint16_t NumByteToRead) -{ - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - - /*!< Send "Read from Memory " instruction */ - sFLASH_SendByte(sFLASH_CMD_READ); - - /*!< Send ReadAddr high nibble address byte to read from */ - sFLASH_SendByte((ReadAddr & 0xFF0000) >> 16); - /*!< Send ReadAddr medium nibble address byte to read from */ - sFLASH_SendByte((ReadAddr& 0xFF00) >> 8); - /*!< Send ReadAddr low nibble address byte to read from */ - sFLASH_SendByte(ReadAddr & 0xFF); - - while (NumByteToRead--) /*!< while there is data to be read */ - { - /*!< Read a byte from the FLASH */ - *pBuffer = sFLASH_SendByte(sFLASH_DUMMY_BYTE); - /*!< Point to the next location where the byte read will be saved */ - pBuffer++; - } - - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); -} - -/** - * @brief Reads FLASH identification. - * @param None - * @retval FLASH identification - */ -uint32_t sFLASH_ReadID(void) -{ - uint32_t Temp = 0, Temp0 = 0, Temp1 = 0, Temp2 = 0; - - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - - /*!< Send "RDID " instruction */ - sFLASH_SendByte(0x9F); - - /*!< Read a byte from the FLASH */ - Temp0 = sFLASH_SendByte(sFLASH_DUMMY_BYTE); - - /*!< Read a byte from the FLASH */ - Temp1 = sFLASH_SendByte(sFLASH_DUMMY_BYTE); - - /*!< Read a byte from the FLASH */ - Temp2 = sFLASH_SendByte(sFLASH_DUMMY_BYTE); - - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); - - Temp = (Temp0 << 16) | (Temp1 << 8) | Temp2; - - return Temp; -} - -/** - * @brief Initiates a read data byte (READ) sequence from the Flash. - * This is done by driving the /CS line low to select the device, then the READ - * instruction is transmitted followed by 3 bytes address. This function exit - * and keep the /CS line low, so the Flash still being selected. With this - * technique the whole content of the Flash is read with a single READ instruction. - * @param ReadAddr: FLASH's internal address to read from. - * @retval None - */ -void sFLASH_StartReadSequence(uint32_t ReadAddr) -{ - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - - /*!< Send "Read from Memory " instruction */ - sFLASH_SendByte(sFLASH_CMD_READ); - - /*!< Send the 24-bit address of the address to read from -------------------*/ - /*!< Send ReadAddr high nibble address byte */ - sFLASH_SendByte((ReadAddr & 0xFF0000) >> 16); - /*!< Send ReadAddr medium nibble address byte */ - sFLASH_SendByte((ReadAddr& 0xFF00) >> 8); - /*!< Send ReadAddr low nibble address byte */ - sFLASH_SendByte(ReadAddr & 0xFF); -} - -/** - * @brief Reads a byte from the SPI Flash. - * @note This function must be used only if the Start_Read_Sequence function - * has been previously called. - * @param None - * @retval Byte Read from the SPI Flash. - */ -uint8_t sFLASH_ReadByte(void) -{ - return (sFLASH_SendByte(sFLASH_DUMMY_BYTE)); -} - -/** - * @brief Sends a byte through the SPI interface and return the byte received - * from the SPI bus. - * @param byte: byte to send. - * @retval The value of the received byte. - */ -uint8_t sFLASH_SendByte(uint8_t byte) -{ - /*!< Loop while DR register in not emplty */ - while (SPI_I2S_GetFlagStatus(sFLASH_SPI, SPI_I2S_FLAG_TXE) == RESET); - - /*!< Send byte through the SPI1 peripheral */ - SPI_I2S_SendData(sFLASH_SPI, byte); - - /*!< Wait to receive a byte */ - while (SPI_I2S_GetFlagStatus(sFLASH_SPI, SPI_I2S_FLAG_RXNE) == RESET); - - /*!< Return the byte read from the SPI bus */ - return SPI_I2S_ReceiveData(sFLASH_SPI); -} - -/** - * @brief Sends a Half Word through the SPI interface and return the Half Word - * received from the SPI bus. - * @param HalfWord: Half Word to send. - * @retval The value of the received Half Word. - */ -uint16_t sFLASH_SendHalfWord(uint16_t HalfWord) -{ - /*!< Loop while DR register in not emplty */ - while (SPI_I2S_GetFlagStatus(sFLASH_SPI, SPI_I2S_FLAG_TXE) == RESET); - - /*!< Send Half Word through the sFLASH peripheral */ - SPI_I2S_SendData(sFLASH_SPI, HalfWord); - - /*!< Wait to receive a Half Word */ - while (SPI_I2S_GetFlagStatus(sFLASH_SPI, SPI_I2S_FLAG_RXNE) == RESET); - - /*!< Return the Half Word read from the SPI bus */ - return SPI_I2S_ReceiveData(sFLASH_SPI); -} - -/** - * @brief Enables the write access to the FLASH. - * @param None - * @retval None - */ -void sFLASH_WriteEnable(void) -{ - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - - /*!< Send "Write Enable" instruction */ - sFLASH_SendByte(sFLASH_CMD_WREN); - - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); -} - -/** - * @brief Polls the status of the Write In Progress (WIP) flag in the FLASH's - * status register and loop until write opertaion has completed. - * @param None - * @retval None - */ -void sFLASH_WaitForWriteEnd(void) -{ - uint8_t flashstatus = 0; - - /*!< Select the FLASH: Chip Select low */ - sFLASH_CS_LOW(); - - /*!< Send "Read Status Register" instruction */ - sFLASH_SendByte(sFLASH_CMD_RDSR); - - /*!< Loop as long as the memory is busy with a write cycle */ - do - { - /*!< Send a dummy byte to generate the clock needed by the FLASH - and put the value of the status register in FLASH_Status variable */ - flashstatus = sFLASH_SendByte(sFLASH_DUMMY_BYTE); - - } - while ((flashstatus & sFLASH_WIP_FLAG) == SET); /* Write in progress */ - - /*!< Deselect the FLASH: Chip Select high */ - sFLASH_CS_HIGH(); -} - -/** - * @} - */ - -/** - * @} - */ - -/** - * @} - */ - -/** - * @} - */ - -/** - * @} - */ - -/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |