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Firmware: use FatFS FASTSEEK option for MSU1 file access

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This commit is contained in:
ikari 2011-12-19 22:32:27 +01:00
parent 20c2cdb961
commit 90b91583a1
4 changed files with 16 additions and 5 deletions
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6
src/config
View File

@ -1,4 +1,4 @@
CONFIG_VERSION=0.1.0
#FWVER=000100
CONFIG_FWVER=256
CONFIG_VERSION=0.1.1
#FWVER=000101
CONFIG_FWVER=257
CONFIG_MCU_FOSC=12000000

2
src/config.h
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@ -66,7 +66,7 @@
#define FPGA_MCU_RDY_BIT 9
#define QSORT_MAXELEM 2048
#define CLTBL_SIZE 100
#define SSP_REGS LPC_SSP0
#define SSP_PCLKREG PCLKSEL1
// 1: PCLKSEL0

2
src/ffconf.h
View File

@ -48,7 +48,7 @@
/* To enable f_forward function, set _USE_FORWARD to 1 and set _FS_TINY to 1. */
#define _USE_FASTSEEK 0 /* 0:Disable or 1:Enable */
#define _USE_FASTSEEK 1 /* 0:Disable or 1:Enable */
/* To enable fast seek feature, set _USE_FASTSEEK to 1. */

11
src/msu1.c
View File

@ -13,6 +13,9 @@
#include "smc.h"
FIL msufile;
DWORD msu_cltbl[CLTBL_SIZE] IN_AHBRAM;
DWORD pcm_cltbl[CLTBL_SIZE] IN_AHBRAM;
extern snes_romprops_t romprops;
int msu1_check_reset(void) {
@ -40,6 +43,11 @@ int msu1_check(uint8_t* filename) {
printf("MSU datafile not found\n");
return 0;
}
msufile.cltbl = msu_cltbl;
msu_cltbl[0] = CLTBL_SIZE;
if(f_lseek(&msufile, CREATE_LINKMAP)) {
printf("Error creating FF linkmap for MSU file!\n");
}
romprops.fpga_features |= FEAT_MSU1;
return 1;
}
@ -128,6 +136,9 @@ int msu1_loop() {
strcpy(strrchr((char*)file_buf, (int)'.'), suffix);
printf("filename: %s\n", file_buf);
f_open(&file_handle, (const TCHAR*)file_buf, FA_READ);
file_handle.cltbl = pcm_cltbl;
pcm_cltbl[0] = CLTBL_SIZE;
f_lseek(&file_handle, CREATE_LINKMAP);
f_lseek(&file_handle, 4L);
f_read(&file_handle, &msu_loop_point, 4, &bytes_read);
printf("loop point: %ld samples\n", msu_loop_point);