fusee_cpp: Implement fatal display, reading of fusee-secondary

fusee_cpp/program/source/fatfs/ffsystem.c

@@ -0,0 +1,170 @@
+/*------------------------------------------------------------------------*/
+/* Sample Code of OS Dependent Functions for FatFs                        */
+/* (C)ChaN, 2018                                                          */
+/*------------------------------------------------------------------------*/
+
+
+#include "ff.h"
+
+
+#if FF_USE_LFN == 3 /* Dynamic memory allocation */
+
+/*------------------------------------------------------------------------*/
+/* Allocate a memory block                                                */
+/*------------------------------------------------------------------------*/
+
+void* ff_memalloc ( /* Returns pointer to the allocated memory block (null if not enough core) */
+    UINT msize      /* Number of bytes to allocate */
+)
+{
+    return malloc(msize);   /* Allocate a new memory block with POSIX API */
+}
+
+
+/*------------------------------------------------------------------------*/
+/* Free a memory block                                                    */
+/*------------------------------------------------------------------------*/
+
+void ff_memfree (
+    void* mblock    /* Pointer to the memory block to free (nothing to do if null) */
+)
+{
+    free(mblock);   /* Free the memory block with POSIX API */
+}
+
+#endif
+
+
+
+#if FF_FS_REENTRANT /* Mutal exclusion */
+
+/*------------------------------------------------------------------------*/
+/* Create a Synchronization Object                                        */
+/*------------------------------------------------------------------------*/
+/* This function is called in f_mount() function to create a new
+/  synchronization object for the volume, such as semaphore and mutex.
+/  When a 0 is returned, the f_mount() function fails with FR_INT_ERR.
+*/
+
+//const osMutexDef_t Mutex[FF_VOLUMES]; /* Table of CMSIS-RTOS mutex */
+
+
+int ff_cre_syncobj (    /* 1:Function succeeded, 0:Could not create the sync object */
+    BYTE vol,           /* Corresponding volume (logical drive number) */
+    FF_SYNC_t* sobj     /* Pointer to return the created sync object */
+)
+{
+    /* Win32 */
+    *sobj = CreateMutex(NULL, FALSE, NULL);
+    return (int)(*sobj != INVALID_HANDLE_VALUE);
+
+    /* uITRON */
+//  T_CSEM csem = {TA_TPRI,1,1};
+//  *sobj = acre_sem(&csem);
+//  return (int)(*sobj > 0);
+
+    /* uC/OS-II */
+//  OS_ERR err;
+//  *sobj = OSMutexCreate(0, &err);
+//  return (int)(err == OS_NO_ERR);
+
+    /* FreeRTOS */
+//  *sobj = xSemaphoreCreateMutex();
+//  return (int)(*sobj != NULL);
+
+    /* CMSIS-RTOS */
+//  *sobj = osMutexCreate(&Mutex[vol]);
+//  return (int)(*sobj != NULL);
+}
+
+
+/*------------------------------------------------------------------------*/
+/* Delete a Synchronization Object                                        */
+/*------------------------------------------------------------------------*/
+/* This function is called in f_mount() function to delete a synchronization
+/  object that created with ff_cre_syncobj() function. When a 0 is returned,
+/  the f_mount() function fails with FR_INT_ERR.
+*/
+
+int ff_del_syncobj (    /* 1:Function succeeded, 0:Could not delete due to an error */
+    FF_SYNC_t sobj      /* Sync object tied to the logical drive to be deleted */
+)
+{
+    /* Win32 */
+    return (int)CloseHandle(sobj);
+
+    /* uITRON */
+//  return (int)(del_sem(sobj) == E_OK);
+
+    /* uC/OS-II */
+//  OS_ERR err;
+//  OSMutexDel(sobj, OS_DEL_ALWAYS, &err);
+//  return (int)(err == OS_NO_ERR);
+
+    /* FreeRTOS */
+//  vSemaphoreDelete(sobj);
+//  return 1;
+
+    /* CMSIS-RTOS */
+//  return (int)(osMutexDelete(sobj) == osOK);
+}
+
+
+/*------------------------------------------------------------------------*/
+/* Request Grant to Access the Volume                                     */
+/*------------------------------------------------------------------------*/
+/* This function is called on entering file functions to lock the volume.
+/  When a 0 is returned, the file function fails with FR_TIMEOUT.
+*/
+
+int ff_req_grant (  /* 1:Got a grant to access the volume, 0:Could not get a grant */
+    FF_SYNC_t sobj  /* Sync object to wait */
+)
+{
+    /* Win32 */
+    return (int)(WaitForSingleObject(sobj, FF_FS_TIMEOUT) == WAIT_OBJECT_0);
+
+    /* uITRON */
+//  return (int)(wai_sem(sobj) == E_OK);
+
+    /* uC/OS-II */
+//  OS_ERR err;
+//  OSMutexPend(sobj, FF_FS_TIMEOUT, &err));
+//  return (int)(err == OS_NO_ERR);
+
+    /* FreeRTOS */
+//  return (int)(xSemaphoreTake(sobj, FF_FS_TIMEOUT) == pdTRUE);
+
+    /* CMSIS-RTOS */
+//  return (int)(osMutexWait(sobj, FF_FS_TIMEOUT) == osOK);
+}
+
+
+/*------------------------------------------------------------------------*/
+/* Release Grant to Access the Volume                                     */
+/*------------------------------------------------------------------------*/
+/* This function is called on leaving file functions to unlock the volume.
+*/
+
+void ff_rel_grant (
+    FF_SYNC_t sobj  /* Sync object to be signaled */
+)
+{
+    /* Win32 */
+    ReleaseMutex(sobj);
+
+    /* uITRON */
+//  sig_sem(sobj);
+
+    /* uC/OS-II */
+//  OSMutexPost(sobj);
+
+    /* FreeRTOS */
+//  xSemaphoreGive(sobj);
+
+    /* CMSIS-RTOS */
+//  osMutexRelease(sobj);
+}
+
+#endif
+