85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
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#include "config.h"
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#include "uart.h"
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#include "ff.h"
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#include "fileops.h"
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#include "diskio.h"
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/*
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WCHAR ff_convert(WCHAR w, UINT dir) {
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return w;
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}*/
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int newcard;
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void file_init() {
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file_res=f_mount(0, &fatfs);
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newcard = 0;
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}
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void file_reinit(void) {
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disk_init();
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file_init();
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}
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void file_open_by_filinfo(FILINFO* fno) {
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file_res = l_openfilebycluster(&fatfs, &file_handle, (TCHAR*)"", fno->clust, fno->fsize);
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}
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void file_open(uint8_t* filename, BYTE flags) {
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if (disk_state == DISK_CHANGED) {
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file_reinit();
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newcard = 1;
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}
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file_res = f_open(&file_handle, (TCHAR*)filename, flags);
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file_block_off = sizeof(file_buf);
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file_block_max = sizeof(file_buf);
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file_status = file_res ? FILE_ERR : FILE_OK;
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}
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void file_close() {
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file_res = f_close(&file_handle);
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}
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UINT file_read() {
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UINT bytes_read;
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file_res = f_read(&file_handle, file_buf, sizeof(file_buf), &bytes_read);
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return bytes_read;
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}
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/*UINT file_write() {
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UINT bytes_written;
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file_res = f_write(&file_handle, file_buf, sizeof(file_buf), &bytes_written);
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if(bytes_written < sizeof(file_buf)) {
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printf("wrote less than expected - card full?\n");
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}
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return bytes_written;
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}*/
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UINT file_readblock(void* buf, uint32_t addr, uint16_t size) {
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UINT bytes_read;
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file_res = f_lseek(&file_handle, addr);
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if(file_handle.fptr != addr) {
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return 0;
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}
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file_res = f_read(&file_handle, buf, size, &bytes_read);
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return bytes_read;
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}
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/*UINT file_writeblock(void* buf, uint32_t addr, uint16_t size) {
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UINT bytes_written;
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file_res = f_lseek(&file_handle, addr);
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if(file_res) return 0;
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file_res = f_write(&file_handle, buf, size, &bytes_written);
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return bytes_written;
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}*/
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uint8_t file_getc() {
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if(file_block_off == file_block_max) {
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file_block_max = file_read();
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if(file_block_max == 0) file_status = FILE_EOF;
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file_block_off = 0;
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}
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return file_buf[file_block_off++];
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}
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