adding msc Start Stop to buitin command, but not complate yet

add tud_msc_start_stop_cb() as optional callback

examples/device/cdc_msc_hid/src/msc_disk.c

@@ -152,6 +152,26 @@ void tud_msc_capacity_cb(uint8_t lun, uint32_t* block_count, uint16_t* block_siz
   *block_size  = DISK_BLOCK_SIZE;
 }
 
+// Invoked when received Start Stop Unit command
+// - Start = 0 : stopped power mode, if load_eject = 1 : unload disk storage
+// - Start = 1 : active mode, if load_eject = 1 : load disk storage
+void tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject)
+{
+  (void) lun;
+  (void) power_condition;
+
+  if ( load_eject )
+  {
+    if (start)
+    {
+      // load disk storage
+    }else
+    {
+      // unload disk storage
+    }
+  }
+}
+
 // Callback invoked when received READ10 command.
 // Copy disk's data to buffer (up to bufsize) and return number of copied bytes.
 int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)
@@ -200,18 +220,6 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
       resplen = 0;
     break;
 
-    case SCSI_CMD_START_STOP_UNIT:
-      // Host try to eject/safe remove/poweroff us. We could safely disconnect with disk storage, or go into lower power
-      /* scsi_start_stop_unit_t const * start_stop = (scsi_start_stop_unit_t const *) scsi_cmd;
-        // Start bit = 0 : low power mode, if load_eject = 1 : unmount disk storage as well
-        // Start bit = 1 : Ready mode, if load_eject = 1 : mount disk storage
-        start_stop->start;
-        start_stop->load_eject;
-       */
-       resplen = 0;
-    break;
-
-
     default:
       // Set Sense = Invalid Command Operation
       tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);

examples/device/cdc_msc_hid_freertos/src/msc_disk.c

@@ -152,6 +152,26 @@ void tud_msc_capacity_cb(uint8_t lun, uint32_t* block_count, uint16_t* block_siz
   *block_size  = DISK_BLOCK_SIZE;
 }
 
+// Invoked when received Start Stop Unit command
+// - Start = 0 : stopped power mode, if load_eject = 1 : unload disk storage
+// - Start = 1 : active mode, if load_eject = 1 : load disk storage
+void tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject)
+{
+  (void) lun;
+  (void) power_condition;
+
+  if ( load_eject )
+  {
+    if (start)
+    {
+      // load disk storage
+    }else
+    {
+      // unload disk storage
+    }
+  }
+}
+
 // Callback invoked when received READ10 command.
 // Copy disk's data to buffer (up to bufsize) and return number of copied bytes.
 int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)

examples/device/msc_dual_lun/src/msc_disk_dual.c

@@ -234,15 +234,36 @@ bool tud_msc_test_unit_ready_cb(uint8_t lun)
   return true; // RAM disk is always ready
 }
 
-// Callback invoked to determine disk's size
+// Invoked when received SCSI_CMD_READ_CAPACITY_10 and SCSI_CMD_READ_FORMAT_CAPACITY to determine the disk size
+// Application update block count and block size
 void tud_msc_capacity_cb(uint8_t lun, uint32_t* block_count, uint16_t* block_size)
 {
-  (void) lun; // both LUNs have same size
+  (void) lun;
 
   *block_count = DISK_BLOCK_NUM;
   *block_size  = DISK_BLOCK_SIZE;
 }
 
+// Invoked when received Start Stop Unit command
+// - Start = 0 : stopped power mode, if load_eject = 1 : unload disk storage
+// - Start = 1 : active mode, if load_eject = 1 : load disk storage
+void tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject)
+{
+  (void) lun;
+  (void) power_condition;
+
+  if ( load_eject )
+  {
+    if (start)
+    {
+      // load disk storage
+    }else
+    {
+      // unload disk storage
+    }
+  }
+}
+
 // Callback invoked when received READ10 command.
 // Copy disk's data to buffer (up to bufsize) and return number of copied bytes.
 int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buffer, uint32_t bufsize)

src/class/msc/msc_device.c

@@ -202,8 +202,18 @@ int32_t proc_builtin_scsi(uint8_t lun, uint8_t const scsi_cmd[16], uint8_t* buff
         // not ready response with Failed status and sense key = not ready
         resplen = - 1;
 
-        // Logical Unit Not Ready, Cause Not Reportable
-        tud_msc_set_sense(lun, SCSI_SENSE_NOT_READY, 0x04, 0x00);
+        // If sense key is not set by callback, default to Logical Unit Not Ready, Cause Not Reportable
+        if ( _mscd_itf.sense_key == 0 ) tud_msc_set_sense(lun, SCSI_SENSE_NOT_READY, 0x04, 0x00);
+      }
+    break;
+
+    case SCSI_CMD_START_STOP_UNIT:
+      resplen = 0;
+
+      if (tud_msc_start_stop_cb)
+      {
+        scsi_start_stop_unit_t const * start_stop = (scsi_start_stop_unit_t const *) scsi_cmd;
+        tud_msc_start_stop_cb(lun, start_stop->power_condition, start_stop->start, start_stop->load_eject);
       }
     break;
 

src/class/msc/msc_device.h

@@ -128,6 +128,11 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
 // Invoked when received GET_MAX_LUN request, required for multiple LUNs implementation
 ATTR_WEAK uint8_t tud_msc_get_maxlun_cb(void);
 
+// Invoked when received Start Stop Unit command
+// - Start = 0 : stopped power mode, if load_eject = 1 : unload disk storage
+// - Start = 1 : active mode, if load_eject = 1 : load disk storage
+ATTR_WEAK void tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject);
+
 // Invoked when Read10 command is complete
 ATTR_WEAK void tud_msc_read10_complete_cb(uint8_t lun);
 

tools/build_all.py

@@ -46,7 +46,7 @@ for example in all_device_example:
 # FreeRTOS example
 #example = 'cdc_msc_hid_freertos'
 #board = 'pca10056'
-#subprocess.run("make -j2 -C examples/device/{} BOARD={} clean all".format(example, board), shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+#build_example(example, board)
 
 
 total_time = time.monotonic() - total_time