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feat(SDHC,MiscDrivers): Update AppSwitcher example to use new feature…
…s with External Flash instead of SDHC (#571) * SDHC Library Changes to Enable New Features of the AppSwitcher Example (from refdes repository) * SDHC and ExtMemory Updates to Enable New Features of AppSwitcher * Delete ar_args.txt * Minor Changes on diskio.c * ff13.c Minor Changes * clang-format bot reformatting. * Updated copyright in sdhc.mk. * Revert "clang-format bot reformatting." This reverts commit db7e4ec. * clang-format bot reformatting. * Triggering workflows. * Removed SDHC from linter check. * Fixed linter errors. * Fixed linter errors. * AFE: Updated SVD file names to include Revision. * style(Examples,MiscDrivers): Update capitalization for EXT_FLASH_READ_DUMMY * Fix Linter filter * Revert "style(Examples,MiscDrivers): Update capitalization for EXT_FLASH_READ_DUMMY" This reverts commit 675d646. --------- Co-authored-by: Jake Carter <[email protected]> Co-authored-by: sihyung-maxim <[email protected]> Co-authored-by: Sihyung Woo <[email protected]> Co-authored-by: Sihyung Woo <[email protected]>
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| /****************************************************************************** | ||
| * Copyright (C) 2023 Maxim Integrated Products, Inc., All Rights Reserved. | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a | ||
| * copy of this software and associated documentation files (the "Software"), | ||
| * to deal in the Software without restriction, including without limitation | ||
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, | ||
| * and/or sell copies of the Software, and to permit persons to whom the | ||
| * Software is furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included | ||
| * in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | ||
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
| * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES | ||
| * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | ||
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | ||
| * OTHER DEALINGS IN THE SOFTWARE. | ||
| * | ||
| * Except as contained in this notice, the name of Maxim Integrated | ||
| * Products, Inc. shall not be used except as stated in the Maxim Integrated | ||
| * Products, Inc. Branding Policy. | ||
| * | ||
| * The mere transfer of this software does not imply any licenses | ||
| * of trade secrets, proprietary technology, copyrights, patents, | ||
| * trademarks, maskwork rights, or any other form of intellectual | ||
| * property whatsoever. Maxim Integrated Products, Inc. retains all | ||
| * ownership rights. | ||
| * | ||
| ******************************************************************************/ | ||
|
|
||
| /** | ||
| * @file mscmem.h | ||
| * @brief Memory routines used by the USB Mass Storage Class example. | ||
| * See the msc_mem_t structure in msc.h for function details. | ||
| * @details Functions are provided for using the internal RAM of the | ||
| * device or the external SPI flash memory. Use the SPIXF_DISK | ||
| * and RAM_DISK defines to select the desired memory at compile | ||
| * time. | ||
| */ | ||
|
|
||
| #include "mscmem.h" | ||
| #include <string.h> | ||
| #include <stdio.h> | ||
| #include "Ext_Flash.h" | ||
| #include "spixf.h" | ||
|
|
||
| /***** Definitions *****/ | ||
|
|
||
| #define SPIXF_DISK 1 | ||
| #define RAM_DISK 0 | ||
|
|
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| #define LBA_SIZE 512 /* Size of "logical blocks" in bytes */ | ||
| #define LBA_SIZE_SHIFT 9 /* The shift value used to convert between addresses and block numbers */ | ||
|
|
||
| /***** Global Data *****/ | ||
|
|
||
| /***** File Scope Variables *****/ | ||
|
|
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| static int initialized = 0; | ||
| static int running = 0; | ||
|
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| #if SPIXF_DISK | ||
|
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| #undef EXT_FLASH_BAUD | ||
| #define EXT_FLASH_BAUD 5000000 /* SPI clock rate to communicate with the external flash */ | ||
|
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| #define MXC_SPIXF_WIDTH Ext_Flash_DataLine_Quad /*Number of data lines*/ | ||
|
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| #define LBA_PER_SECTOR (EXT_FLASH_SECTOR_SIZE >> LBA_SIZE_SHIFT) | ||
| #define INVALID_SECTOR \ | ||
| EXT_FLASH_NUM_SECTORS /* Use a sector number past the end of memory to indicate invalid */ | ||
|
|
||
| /***** File Scope Variables *****/ | ||
| static uint32_t sectorNum = INVALID_SECTOR; | ||
| static uint8_t sector[EXT_FLASH_SECTOR_SIZE]; | ||
| static int sectorDirty = 0; | ||
|
|
||
| /***** Function Prototypes *****/ | ||
| static uint32_t getSectorNum(uint32_t lba); | ||
| static uint32_t getSectorAddr(uint32_t lba); | ||
| static uint32_t getSector(uint32_t num); | ||
|
|
||
| /******************************************************************************/ | ||
| static uint32_t getSectorNum(uint32_t lba) | ||
| { | ||
| /* Absolute_address = lba * LBA_SIZE */ | ||
| /* Sector_num = Absolute_address / EXT_FLASH_SECTOR_SIZE */ | ||
| /* Sector_num = lba * 512 / 4096 */ | ||
| return lba >> (EXT_FLASH_SECTOR_SIZE_SHIFT - LBA_SIZE_SHIFT); | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| static uint32_t getSectorAddr(uint32_t lba) | ||
| { | ||
| /* eight 512 byte blocks in each sector */ | ||
| return (lba & (LBA_PER_SECTOR - 1)) << LBA_SIZE_SHIFT; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| static uint32_t getSector(uint32_t num) | ||
| { | ||
| /* New sector requested? */ | ||
| if (sectorNum != num) { | ||
| /* Is the current sector real? */ | ||
| if (sectorNum != INVALID_SECTOR) { | ||
| /* Was it written to after it was read from memory? */ | ||
| if (sectorDirty) { | ||
| /* Erase the old data. */ | ||
| Ext_Flash_Erase(sectorNum << EXT_FLASH_SECTOR_SIZE_SHIFT, Ext_Flash_Erase_4K); | ||
| /* Write the new */ | ||
| Ext_Flash_Program_Page(sectorNum << EXT_FLASH_SECTOR_SIZE_SHIFT, sector, | ||
| EXT_FLASH_SECTOR_SIZE, MXC_SPIXF_WIDTH); | ||
| /* Mark data as clean */ | ||
| sectorDirty = 0; | ||
| } | ||
| } | ||
|
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||
| /* Requesting a new valid sector? */ | ||
| if (num != INVALID_SECTOR) { | ||
| Ext_Flash_Read(num << EXT_FLASH_SECTOR_SIZE_SHIFT, sector, EXT_FLASH_SECTOR_SIZE, | ||
| MXC_SPIXF_WIDTH); | ||
| sectorDirty = 0; | ||
| sectorNum = num; | ||
| } | ||
| } | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Init() | ||
| { | ||
| if (!initialized) { | ||
| MXC_SPIXF_SetSPIFrequency(EXT_FLASH_BAUD); | ||
| Ext_Flash_Init(); | ||
| Ext_Flash_Reset(); | ||
|
|
||
| if (MXC_SPIXF_WIDTH == Ext_Flash_DataLine_Quad) { | ||
| Ext_Flash_Quad(1); | ||
| } else { | ||
| Ext_Flash_Quad(0); | ||
| } | ||
|
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| initialized = 1; | ||
| } | ||
|
|
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| return 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| uint32_t mscmem_Size(void) | ||
| { | ||
| /* Get number of 512 byte chunks the external flash contains. */ | ||
| return (EXT_FLASH_SECTOR_SIZE >> LBA_SIZE_SHIFT) * EXT_FLASH_NUM_SECTORS; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Read(uint32_t lba, uint8_t *buffer) | ||
| { | ||
| uint32_t addr; | ||
|
|
||
| /* Convert to external flash sector number. */ | ||
| uint32_t sNum = getSectorNum(lba); | ||
|
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| if (getSector(sNum)) { | ||
| /* Failed to write/read from external flash */ | ||
| return 1; | ||
| } | ||
|
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| /* Get the offset into the current sector */ | ||
| addr = getSectorAddr(lba); | ||
|
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| memcpy(buffer, sector + addr, LBA_SIZE); | ||
|
|
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| return 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Write(uint32_t lba, uint8_t *buffer) | ||
| { | ||
| uint32_t addr; | ||
|
|
||
| /* Convert to external flash sector number. */ | ||
| uint32_t sNum = getSectorNum(lba); | ||
|
|
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| if (getSector(sNum)) { | ||
| /* Failed to write/read from external flash */ | ||
| return 1; | ||
| } | ||
|
|
||
| /* Get the offset into the current sector */ | ||
| addr = getSectorAddr(lba); | ||
|
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| memcpy(sector + addr, buffer, LBA_SIZE); | ||
| sectorDirty = 1; | ||
|
|
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| return 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Start() | ||
| { | ||
| /* Turn on the external flash if it is not already. */ | ||
| if (!initialized) { | ||
| mscmem_Init(); | ||
| } | ||
|
|
||
| /* Check if the initialization succeeded. If it has, start running. */ | ||
| if (initialized) { | ||
| running = 1; | ||
| } | ||
|
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| /* Start should return fail (non-zero) if the memory cannot be initialized. */ | ||
| return !initialized; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Stop() | ||
| { | ||
| /* TODO - could shut down XIPF interface here. */ | ||
|
|
||
| /* Flush the currently cached sector if necessary. */ | ||
| if (getSector(INVALID_SECTOR)) { | ||
| return 1; | ||
| } | ||
|
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| running = 0; | ||
| return 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Ready() | ||
| { | ||
| return running; | ||
| } | ||
| int mscmem_write_dirty_sector() | ||
| { | ||
| if (sectorDirty) { | ||
| /* Erase the old data. */ | ||
| Ext_Flash_Erase(sectorNum << EXT_FLASH_SECTOR_SIZE_SHIFT, Ext_Flash_Erase_4K); | ||
| /* Write the new */ | ||
| Ext_Flash_Program_Page(sectorNum << EXT_FLASH_SECTOR_SIZE_SHIFT, sector, | ||
| EXT_FLASH_SECTOR_SIZE, MXC_SPIXF_WIDTH_4); | ||
| /* Mark data as clean */ | ||
| sectorDirty = 0; | ||
| } | ||
| return 0; | ||
| } | ||
| uint32_t mscmem_ID() | ||
| { | ||
| if (Ext_Flash_ID() == EXT_FLASH_EXP_ID) { | ||
| return 1; | ||
| } else { | ||
| return 0; | ||
| } | ||
| } | ||
| #elif RAM_DISK | ||
|
|
||
| #define NUM_PAGES 0x100 | ||
| static uint8_t mem[NUM_PAGES][LBA_SIZE]; | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Init() | ||
| { | ||
| if (!initialized) { | ||
| initialized = 1; | ||
| #if (ERASE_MEMORY_ON_INIT) | ||
| memset(mem, 0, sizeof(mem)); | ||
| #endif | ||
| } | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| uint32_t mscmem_Size(void) | ||
| { | ||
| return NUM_PAGES; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Read(uint32_t lba, uint8_t *buffer) | ||
| { | ||
| if (lba >= NUM_PAGES) { | ||
| return 1; | ||
| } | ||
|
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| memcpy(buffer, mem[lba], LBA_SIZE); | ||
| return 0; | ||
| } | ||
|
|
||
| /******************************************************************************/ | ||
| int mscmem_Write(uint32_t lba, uint8_t *buffer) | ||
| { | ||
| if (lba >= NUM_PAGES) { | ||
| return 1; | ||
| } | ||
|
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| memcpy(mem[lba], buffer, LBA_SIZE); | ||
| return 0; | ||
| } | ||
|
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| /******************************************************************************/ | ||
| int mscmem_Start() | ||
| { | ||
| /* Not much to do for this implementation. The RAM is always ready. */ | ||
| if (!initialized) { | ||
| mscmem_Init(); | ||
| } | ||
|
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| /* Check if the RAM has been initialized. If it has, start running. */ | ||
| if (initialized) { | ||
| running = 1; | ||
| } | ||
|
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| /* Start should return fail (non-zero) if the memory cannot be initialized. */ | ||
| return !initialized; | ||
| } | ||
|
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| /******************************************************************************/ | ||
| int mscmem_Stop() | ||
| { | ||
| /* Nothing to do for this implementation. All data is written as it is */ | ||
| /* received so there are no pending writes that need to be flushed. */ | ||
| running = 0; | ||
| return 0; | ||
| } | ||
|
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| /******************************************************************************/ | ||
| int mscmem_Ready() | ||
| { | ||
| return running; | ||
| } | ||
|
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| #else | ||
| #error "You must assign either RAM_DISK or SPIXF_DISK to 1." | ||
| #endif |
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