levelx
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Outline
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#define LX_SOURCE_CODE
#define LX_DISABLE_ERROR_CHECKING
#include "lx_api.h"
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_lx_nor_flash_driver_write(LX_NOR_FLASH *, ULONG *, ULONG *, ULONG)
Files
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SourceVuSTM32 Libraries and Sampleslevelxcommon/src/lx_nor_flash_driver_write.c
 
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/**************************************************************************/ /* */ /* Copyright (c) Microsoft Corporation. All rights reserved. */ /* */ /* This software is licensed under the Microsoft Software License */ /* Terms for Microsoft Azure RTOS. Full text of the license can be */ /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ /* and in the root directory of this software. */ /* */... /**************************************************************************/ ... /**************************************************************************/ /**************************************************************************/ /** */ /** LevelX Component */ /** */ /** NOR Flash */ /** */... /**************************************************************************/ /**************************************************************************/ #define LX_SOURCE_CODE /* Disable ThreadX error checking. */ #ifndef LX_DISABLE_ERROR_CHECKING #define LX_DISABLE_ERROR_CHECKING #endif /* Include necessary system files. */ #include "lx_api.h" ... /**************************************************************************/ /* */ /* FUNCTION RELEASE */ /* */ /* _lx_nor_flash_driver_write PORTABLE C */ /* 6.1.7 */ /* AUTHOR */ /* */ /* William E. Lamie, Microsoft Corporation */ /* */ /* DESCRIPTION */ /* */ /* This function performs a write of the NOR flash memory. */ /* */ /* INPUT */ /* */ /* nor_flash NOR flash instance */ /* flash_address Address of NOR flash to write */ /* source Source for the write */ /* words Number of words to write */ /* */ /* OUTPUT */ /* */ /* return status */ /* */ /* CALLS */ /* */ /* (lx_nor_flash_driver_write) Actual driver write */ /* */ /* CALLED BY */ /* */ /* Application Code */ /* */ /* RELEASE HISTORY */ /* */ /* DATE NAME DESCRIPTION */ /* */ /* 05-19-2020 William E. Lamie Initial Version 6.0 */ /* 09-30-2020 William E. Lamie Modified comment(s), */ /* resulting in version 6.1 */ /* 06-02-2021 Bhupendra Naphade Modified comment(s), */ /* resulting in version 6.1.7 */ /* */... /**************************************************************************/ UINT _lx_nor_flash_driver_write(LX_NOR_FLASH *nor_flash, ULONG *flash_address, ULONG *source, ULONG words) { #ifndef LX_NOR_DISABLE_EXTENDED_CACHE UINT status; UINT i; ULONG *cache_entry_start; ULONG *cache_entry_end; ULONG cache_offset; /* Is the request a whole sector or a partial sector. */ if ((words == 1) && (nor_flash -> lx_nor_flash_extended_cache_entries)) { /* One word request, which implies that it is a NOR flash metadata write. */ /* Loop through the cache entries to see if there is a sector in cache. */ for (i = 0; i < nor_flash -> lx_nor_flash_extended_cache_entries; i++) { /* Search through the cache to see if there is a cache entry. */ /* Determine the cache entry addresses. */ cache_entry_start = nor_flash -> lx_nor_flash_extended_cache[i].lx_nor_flash_extended_cache_entry_sector_address; cache_entry_end = cache_entry_start + LX_NOR_SECTOR_SIZE; /* Determine if the flash address in in the cache entry. */ if ((cache_entry_start) && (flash_address >= cache_entry_start) && (flash_address < cache_entry_end)) { /* Yes, we found the entry. */ /* Calculate the offset into the cache entry. */ cache_offset = (ULONG)(flash_address - cache_entry_start); /* Copy the word into the cache. */ *(nor_flash -> lx_nor_flash_extended_cache[i].lx_nor_flash_extended_cache_entry_sector_memory + cache_offset) = *source; /* Get out of the loop. */ break; }if ((cache_entry_start) && (flash_address >= cache_entry_start) && (flash_address < cache_entry_end)) { ... } }for (i = 0; i < nor_flash -> lx_nor_flash_extended_cache_entries; i++) { ... } }if ((words == 1) && (nor_flash -> lx_nor_flash_extended_cache_entries)) { ... } /* In any case, call the actual driver write function. */ status = (nor_flash -> lx_nor_flash_driver_write)(flash_address, source, words); /* Return completion status. */ return(status); /* ... */ #else UINT status; /* Call the actual driver write function. */ status = (nor_flash -> lx_nor_flash_driver_write)(flash_address, source, words); /* Return completion status. */ return(status); /* ... */ #endif }{ ... }
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