/** * * \file * * \brief SPI Flash. * * Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries. * * \asf_license_start * * \page License * * Subject to your compliance with these terms, you may use Microchip * software and any derivatives exclusively with Microchip products. * It is your responsibility to comply with third party license terms applicable * to your use of third party software (including open source software) that * may accompany Microchip software. * * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE FULLEST EXTENT * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY, * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE. * * \asf_license_stop * */ /** @defgroup SPIFLASHAPI SPI FLASH */ #ifndef __SPI_FLASH_H__ #define __SPI_FLASH_H__ #include "common/include/nm_common.h" #include "bus_wrapper/include/nm_bus_wrapper.h" #include "driver/source/nmbus.h" #include "spi_flash_map.h" /** @defgroup SPIFLASHFUNCTIONS Functions * @ingroup SPIFLASHAPI */ /**@{*/ /*! * @fn uint32 spi_flash_get_size(void); * @brief Returns with \ref uint32 value which is total flash size\n * @note Returned value in Mb (Mega Bit). * @return SPI flash size in case of success and a ZERO value in case of failure. */ uint32 spi_flash_get_size(void); /*! * @fn sint8 spi_flash_read(uint8 *, uint32, uint32); * @brief Read a specified portion of data from SPI Flash.\n * @param [out] pu8Buf * Pointer to data buffer which will be filled with data in case of successful operation. * @param [in] u32Addr * Address (Offset) to read from at the SPI flash. * @param [in] u32Sz * Total size of data to be read in bytes * @warning * - Address (offset) plus size of data must not exceed flash size.\n * - No firmware is required for reading from SPI flash.\n * - In case of there is a running firmware, it is required to pause your firmware first * before any trial to access SPI flash to avoid any racing between host and running firmware on bus using * @ref m2m_wifi_download_mode * @note * - It is blocking function\n * @sa m2m_wifi_download_mode, spi_flash_get_size * @return The function returns @ref M2M_SUCCESS for successful operations and a negative value otherwise. */ sint8 spi_flash_read(uint8 *pu8Buf, uint32 u32Addr, uint32 u32Sz); /*! * @fn sint8 spi_flash_write(uint8 *, uint32, uint32); * @brief Write a specified portion of data to SPI Flash.\n * @param [in] pu8Buf * Pointer to data buffer which contains the data to be written. * @param [in] u32Offset * Address (Offset) to write at the SPI flash. * @param [in] u32Sz * Total number of size of data bytes * @note * - It is blocking function\n * - It is user's responsibility to verify that data has been written successfully * by reading data again and comparing it with the original. * @warning * - Address (offset) plus size of data must not exceed flash size.\n * - No firmware is required for writing to SPI flash.\n * - In case of there is a running firmware, it is required to pause your firmware first * before any trial to access SPI flash to avoid any racing between host and running firmware on bus using * @ref m2m_wifi_download_mode. * - Before writing to any section, it is required to erase that section first. * @sa m2m_wifi_download_mode, spi_flash_get_size, spi_flash_erase * @return The function returns @ref M2M_SUCCESS for successful operations and a negative value otherwise. */ sint8 spi_flash_write(uint8* pu8Buf, uint32 u32Offset, uint32 u32Sz); /*! * @fn sint8 spi_flash_erase(uint32, uint32); * @brief Erase a specified portion of SPI Flash.\n * @param [in] u32Offset * Address (Offset) to erase from the SPI flash. * @param [in] u32Sz * Total number of bytes required to be erased. * @note It is blocking function \n * @warning * - Address (offset) plus size of data must not exceed flash size.\n * - No firmware is required for writing to SPI flash.\n * - In case of there is a running firmware, it is required to pause your firmware first * before any trial to access SPI flash to avoid any racing between host and running firmware on bus using * @ref m2m_wifi_download_mode * @sa m2m_wifi_download_mode, spi_flash_get_size * @return The function returns @ref M2M_SUCCESS for successful operations and a negative value otherwise. * \section SPIFLASHExample Example * @code{.c} * #include "spi_flash/include/spi_flash.h" * * #define DATA_TO_REPLACE "THIS IS A NEW SECTOR IN FLASH" * * int main() * { * uint8 au8FlashContent[FLASH_SECTOR_SZ] = {0}; * uint32 u32FlashTotalSize = 0; * uint32 u32FlashOffset = 0; * * ret = m2m_wifi_download_mode(); * if(M2M_SUCCESS != ret) * { * printf("Unable to enter download mode\r\n"); * } * else * { * u32FlashTotalSize = spi_flash_get_size(); * } * * while((u32FlashTotalSize > u32FlashOffset) && (M2M_SUCCESS == ret)) * { * ret = spi_flash_read(au8FlashContent, u32FlashOffset, FLASH_SECTOR_SZ); * if(M2M_SUCCESS != ret) * { * printf("Unable to read SPI sector\r\n"); * break; * } * memcpy(au8FlashContent, DATA_TO_REPLACE, strlen(DATA_TO_REPLACE)); * * ret = spi_flash_erase(u32FlashOffset, FLASH_SECTOR_SZ); * if(M2M_SUCCESS != ret) * { * printf("Unable to erase SPI sector\r\n"); * break; * } * * ret = spi_flash_write(au8FlashContent, u32FlashOffset, FLASH_SECTOR_SZ); * if(M2M_SUCCESS != ret) * { * printf("Unable to write SPI sector\r\n"); * break; * } * u32FlashOffset += FLASH_SECTOR_SZ; * } * * if(M2M_SUCCESS == ret) * { * printf("Successful operations\r\n"); * } * else * { * printf("Failed operations\r\n"); * } * * while(1); * return M2M_SUCCESS; * } * @endcode */ sint8 spi_flash_erase(uint32 u32Offset, uint32 u32Sz); /**@} */ #endif //__SPI_FLASH_H__