From b19386d8a794999252ea35a6cd8b71f3f43c75d2 Mon Sep 17 00:00:00 2001
From: bsongis <bsongis@8db61ce9-5e8f-94c8-fa6b-1d1c8bcca7d0>
Date: Tue, 25 Sep 2012 13:39:33 +0000
Subject: [PATCH] [sky9x] SD Mutex again

---
 src/FatFs/ffconf.h   | 32 ++++++++++++++++++++++++++------
 src/ersky9x/diskio.c | 34 +++++++++++++++++++++++++---------
 src/open9x.cpp       |  8 ++++----
 3 files changed, 55 insertions(+), 19 deletions(-)

diff --git a/src/FatFs/ffconf.h b/src/FatFs/ffconf.h
index 3334e6f2d..1dddedd0b 100644
--- a/src/FatFs/ffconf.h
+++ b/src/FatFs/ffconf.h
@@ -9,6 +9,15 @@
 #ifndef _FFCONF
 #define _FFCONF 6502	/* Revision ID */
 
+#if defined(PCBARM) && !defined(SIMU)
+#ifdef __cplusplus
+extern "C" {
+#endif
+#include "../CoOS/kernel/CoOS.h"
+#ifdef __cplusplus
+}
+#endif
+#endif
 
 /*---------------------------------------------------------------------------/
 / Functions and Buffer Configurations
@@ -89,8 +98,11 @@
 /	1    - ASCII only (Valid for non LFN cfg.)
 */
 
-
-#define	_USE_LFN	1		/* 0 to 3 */
+#if defined(PCBARM)
+#define	_USE_LFN	2		/* 0 to 3 */
+#else
+#define _USE_LFN        1               /* 0 to 3 */
+#endif
 #define	_MAX_LFN	255		/* Maximum LFN length to handle (12 to 255) */
 /* The _USE_LFN option switches the LFN support.
 /
@@ -170,9 +182,13 @@
 /* A header file that defines sync object types on the O/S, such as
 /  windows.h, ucos_ii.h and semphr.h, must be included prior to ff.h. */
 
-#define _FS_REENTRANT	0		/* 0:Disable or 1:Enable */
-#define _FS_TIMEOUT		1000	/* Timeout period in unit of time ticks */
-#define	_SYNC_t			HANDLE	/* O/S dependent type of sync object. e.g. HANDLE, OS_EVENT*, ID and etc.. */
+#if defined(PCBARM)
+#define _FS_REENTRANT		1	   /* 0:Disable or 1:Enable */
+#else
+#define _FS_REENTRANT		0	   /* 0:Disable or 1:Enable */
+#endif
+#define _FS_TIMEOUT		1000	   /* Timeout period in unit of time ticks */
+#define	_SYNC_t			OS_MutexID /* O/S dependent type of sync object. e.g. HANDLE, OS_EVENT*, ID and etc.. */
 
 /* The _FS_REENTRANT option switches the reentrancy (thread safe) of the FatFs module.
 /
@@ -181,8 +197,12 @@
 /      ff_req_grant, ff_rel_grant, ff_del_syncobj and ff_cre_syncobj
 /      function must be added to the project. */
 
+#if defined(PCBARM)
+#define	_FS_SHARE	3	/* 0:Disable or >=1:Enable */
+#else
+#define _FS_SHARE       2       /* 0:Disable or >=1:Enable */
+#endif
 
-#define	_FS_SHARE	0	/* 0:Disable or >=1:Enable */
 /* To enable file shareing feature, set _FS_SHARE to 1 or greater. The value
    defines how many files can be opened simultaneously. */
 
diff --git a/src/ersky9x/diskio.c b/src/ersky9x/diskio.c
index 0fb9c39fe..95173b064 100644
--- a/src/ersky9x/diskio.c
+++ b/src/ersky9x/diskio.c
@@ -87,6 +87,31 @@ uint32_t Cmd_8_resp ;
 uint32_t Cmd_A41_resp ;
 uint8_t  cardType;
 
+/*-----------------------------------------------------------------------*/
+/* Lock / unlock functions                                               */
+/*-----------------------------------------------------------------------*/
+int ff_cre_syncobj (BYTE vol, _SYNC_t *mutex)
+{
+  *mutex = CoCreateMutex();
+  return 1;
+}
+
+int ff_req_grant (_SYNC_t mutex)
+{
+  CoEnterMutexSection(mutex);
+  return 1;
+}
+
+void ff_rel_grant (_SYNC_t mutex)
+{
+  CoLeaveMutexSection(mutex);
+}
+
+int ff_del_syncobj (_SYNC_t mutex)
+{
+  return 1;
+}
+
 /**
  * Configure the  MCI CLKDIV in the MCI_MR register. The max. for MCI clock is
  * MCK/2 and corresponds to CLKDIV = 0
@@ -970,16 +995,12 @@ uint32_t sd_cmd16()
 #endif
 }
 
-extern OS_MutexID sdMutex;
-
 uint32_t sd_read_block(uint32_t block_no, uint32_t *data)
 {
   uint32_t result = 0;
   Hsmci *phsmci = HSMCI;
   int32_t retry;
 
-  CoEnterMutexSection(sdMutex);
-
   if (sd_card_ready()) {
       sd_cmd16();
       // Block size = 512, nblocks = 1
@@ -1005,7 +1026,6 @@ uint32_t sd_read_block(uint32_t block_no, uint32_t *data)
   /* Disable PDC */
   phsmci->HSMCI_PTCR = HSMCI_PTCR_RXTDIS | HSMCI_PTCR_TXTDIS;
 
-  CoLeaveMutexSection(sdMutex);
   return result;
 }
 
@@ -1015,8 +1035,6 @@ uint32_t sd_write_block( uint32_t block_no, uint32_t *data )
   Hsmci *phsmci = HSMCI;
   int32_t retry;
 
-  CoEnterMutexSection(sdMutex);
-
   if (sd_card_ready()) {
 
     // TRACE_ERROR("Sector %d ", block_no);
@@ -1067,8 +1085,6 @@ uint32_t sd_write_block( uint32_t block_no, uint32_t *data )
 
   phsmci->HSMCI_MR &= ~(uint32_t)HSMCI_MR_PDCMODE;
 
-  CoLeaveMutexSection(sdMutex);
-
   return result;
 }
 
diff --git a/src/open9x.cpp b/src/open9x.cpp
index 50262bbd7..611770e53 100644
--- a/src/open9x.cpp
+++ b/src/open9x.cpp
@@ -62,7 +62,6 @@ OS_STK debugStack[DEBUG_STACK_SIZE];
 OS_TCID audioTimer;
 OS_FlagID audioFlag;
 
-OS_MutexID sdMutex;
 OS_MutexID audioMutex;
 OS_MutexID mixerMutex;
 #endif
@@ -1057,9 +1056,11 @@ void doSplash()
 #if defined(SIMU)
       if (!main_thread_running) return;
       sleep(1/*ms*/);
-#else
-      getADC_filt();
+#elif defined(PCBARM)
+      CoTickDelay(1);
 #endif
+      getADC_filt();
+
       uint16_t tsum = stickMoveValue();
 
       if(keyDown() || (tsum!=inacSum)) return;  //wait for key release
@@ -3594,7 +3595,6 @@ int main(void)
   audioTimer = CoCreateTmr(TMR_TYPE_ONE_SHOT, 1000/(1000/CFG_SYSTICK_FREQ), 1000/(1000/CFG_SYSTICK_FREQ), audioTimerHandle);
   audioTaskId = CoCreateTask(audioTask, NULL, 7, &audioStack[AUDIO_STACK_SIZE-1], AUDIO_STACK_SIZE);
 
-  sdMutex = CoCreateMutex();
   audioMutex = CoCreateMutex();
   mixerMutex = CoCreateMutex();