mirror of
https://github.com/espruino/Espruino.git
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146 lines
4.1 KiB
C
Executable File
146 lines
4.1 KiB
C
Executable File
// Use Flash memory with devices with large flash - ESP8266/ESP32
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/*
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* @author: Wilberforce - Rhys Williams
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*
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*/
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#include "jsinteractive.h"
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#include "ff.h"
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#include "diskio.h"
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#define FS_SECTOR_SIZE 4096
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#define FS_BLOCK_SIZE 1
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// 1MB = 1024*1024 / 4096 = 256
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// 0-33 format
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#define FS_SECTOR_COUNT 256
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// Hardcode page of 4Mb memory
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#define FS_FLASH_BASE 0x200000
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/*--------------------------------------------------------------------------
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Public Functions
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---------------------------------------------------------------------------*/
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/*-----------------------------------------------------------------------*/
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/* Initialize Disk Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE drv /* Physical drive number (0) */
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)
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{
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NOT_USED(drv);
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jsWarn("Flash Init - disk_initialize %d",drv);
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Get Disk Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE drv /* Physical drive number (0) */
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)
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{
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NOT_USED(drv);
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jsWarn("Flash Init - disk_status %d",drv);
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return 0;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE drv, /* Physical drive number (0) */
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BYTE *buff, /* Pointer to the data buffer to store read data */
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DWORD sector, /* Start sector number (LBA) */
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UINT count /* Sector count */
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)
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{
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NOT_USED(drv);
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uint16_t Transfer_Length;
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uint32_t Memory_Offset;
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Transfer_Length = count * FS_SECTOR_SIZE;
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Memory_Offset = sector * FS_SECTOR_SIZE + FS_FLASH_BASE;
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jsWarn("Flash disk_read sector: %d, buff: mem: %d buff: %d len: %d", sector, Memory_Offset, buff, Transfer_Length);
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jshFlashRead( buff, Memory_Offset, Transfer_Length);
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return RES_OK;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_write (
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BYTE drv, /* Physical drive number (0) */
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const BYTE *buff, /* Pointer to the data to be written */
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DWORD sector, /* Start sector number (LBA) */
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UINT count /* Sector count */
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)
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{
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NOT_USED(drv);
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uint16_t Transfer_Length;
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uint32_t Memory_Offset;
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Transfer_Length = count * FS_SECTOR_SIZE;
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Memory_Offset = sector * FS_SECTOR_SIZE + FS_FLASH_BASE;
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jsWarn("Flash disk_write sector: %d, buff: mem: %d buff: %d len: %d", sector, Memory_Offset, buff, Transfer_Length);
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jshFlashErasePage(Memory_Offset);
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jshFlashWrite( buff, Memory_Offset,Transfer_Length);
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return RES_OK;
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}
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_ioctl (
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BYTE drv, // Physical drive number (0)
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BYTE ctrl, // Control code
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void *buff // Buffer to send/receive control data
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)
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{
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NOT_USED(drv);
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DRESULT res = RES_OK;
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jsWarn("Flash disk_ioctl %d",ctrl);
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switch (ctrl) {
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case CTRL_SYNC : /// Make sure that no pending write process
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res = RES_OK;
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jsWarn("Flash disk_ioctl CTRL_SYNC");
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break;
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case GET_SECTOR_COUNT : // Get number of sectors on the disk (DWORD)
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*(DWORD*)buff = FS_SECTOR_COUNT;
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jsWarn("disk_ioctl FS_SECTOR_COUNT %d",FS_SECTOR_COUNT);
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res = RES_OK;
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break;
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case GET_SECTOR_SIZE : // Get R/W sector size (WORD)
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*(WORD*)buff = FS_SECTOR_SIZE;
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jsWarn("disk_ioctl FS_SECTOR_SIZE %d",FS_SECTOR_SIZE);
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res = RES_OK;
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break;
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case GET_BLOCK_SIZE : // Get erase block size in unit of sector (DWORD)
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*(DWORD*)buff = FS_BLOCK_SIZE;
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jsWarn("disk_ioctl FS_BLOCK_SIZE %d",FS_BLOCK_SIZE);
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res = RES_OK;
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break;
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}
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return res;
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}l |