Merge branch 'master' into h7rs

9 files changed, 158 insertions, 238 deletions

diff --git a/examples/build_system/cmake/cpu/cortex-m0.cmake b/examples/build_system/cmake/cpu/cortex-m0.cmake
index 62019d90d..f837c7eb8 100644
--- a/examples/build_system/cmake/cpu/cortex-m0.cmake
+++ b/examples/build_system/cmake/cpu/cortex-m0.cmake
@@ -1,7 +1,7 @@
 if (TOOLCHAIN STREQUAL "gcc")
   set(TOOLCHAIN_COMMON_FLAGS
     -mthumb
-    -mcpu=cortex-m0plus
+    -mcpu=cortex-m0
     -mfloat-abi=soft
     )
   set(FREERTOS_PORT GCC_ARM_CM0 CACHE INTERNAL "")
diff --git a/examples/build_system/make/cpu/cortex-m4.mk b/examples/build_system/make/cpu/cortex-m4.mk
index 4e16819d1..57d6e126d 100644
--- a/examples/build_system/make/cpu/cortex-m4.mk
+++ b/examples/build_system/make/cpu/cortex-m4.mk
@@ -12,8 +12,8 @@ else ifeq ($(TOOLCHAIN),clang)
 	  -mfpu=fpv4-sp-d16 \
 
 else ifeq ($(TOOLCHAIN),iar)
-  CFLAGS += --cpu cortex-m4 --fpu VFPv4
-  ASFLAGS += --cpu cortex-m4 --fpu VFPv4
+  CFLAGS += --cpu cortex-m4 --fpu VFPv4-SP
+  ASFLAGS += --cpu cortex-m4 --fpu VFPv4-SP
 
 else
   $(error "TOOLCHAIN is not supported")
diff --git a/examples/device/cdc_msc/src/msc_disk.c b/examples/device/cdc_msc/src/msc_disk.c
index d325d77fa..9645f4bfc 100644
--- a/examples/device/cdc_msc/src/msc_disk.c
+++ b/examples/device/cdc_msc/src/msc_disk.c
@@ -40,17 +40,15 @@ static bool ejected = false;
 If you find any bugs or get any questions, feel free to file an\r\n\
 issue at github.com/hathach/tinyusb"
 
-enum
-{
-  DISK_BLOCK_NUM  = 16, // 8KB is the smallest size that windows allow to mount
+enum {
+  DISK_BLOCK_NUM = 16,// 8KB is the smallest size that windows allow to mount
   DISK_BLOCK_SIZE = 512
 };
 
 #ifdef CFG_EXAMPLE_MSC_READONLY
 const
 #endif
-uint8_t msc_disk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
-{
+uint8_t msc_disk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] = {
   //------------- Block0: Boot Sector -------------//
   // byte_per_sector    = DISK_BLOCK_SIZE; fat12_sector_num_16  = DISK_BLOCK_NUM;
   // sector_per_cluster = 1; reserved_sectors = 1;
@@ -59,60 +57,59 @@ uint8_t msc_disk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
   // drive_number       = 0x80; media_type = 0xf8; extended_boot_signature = 0x29;
   // filesystem_type    = "FAT12   "; volume_serial_number = 0x1234; volume_label = "TinyUSB MSC";
   // FAT magic code at offset 510-511
-  {
-      0xEB, 0x3C, 0x90, 0x4D, 0x53, 0x44, 0x4F, 0x53, 0x35, 0x2E, 0x30, 0x00, 0x02, 0x01, 0x01, 0x00,
-      0x01, 0x10, 0x00, 0x10, 0x00, 0xF8, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x29, 0x34, 0x12, 0x00, 0x00, 'T' , 'i' , 'n' , 'y' , 'U' ,
-      'S' , 'B' , ' ' , 'M' , 'S' , 'C' , 0x46, 0x41, 0x54, 0x31, 0x32, 0x20, 0x20, 0x20, 0x00, 0x00,
+{
+    0xEB, 0x3C, 0x90, 0x4D, 0x53, 0x44, 0x4F, 0x53, 0x35, 0x2E, 0x30, 0x00, 0x02, 0x01, 0x01, 0x00,
+    0x01, 0x10, 0x00, 0x10, 0x00, 0xF8, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x29, 0x34, 0x12, 0x00, 0x00, 'T', 'i', 'n', 'y', 'U',
+    'S', 'B', ' ', 'M', 'S', 'C', 0x46, 0x41, 0x54, 0x31, 0x32, 0x20, 0x20, 0x20, 0x00, 0x00,
 
-      // Zero up to 2 last bytes of FAT magic code
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    // Zero up to 2 last bytes of FAT magic code
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xAA
-  },
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0xAA},
 
   //------------- Block1: FAT12 Table -------------//
-  {
-      0xF8, 0xFF, 0xFF, 0xFF, 0x0F // // first 2 entries must be F8FF, third entry is cluster end of readme file
+{
+      0xF8, 0xFF, 0xFF, 0xFF, 0x0F// // first 2 entries must be F8FF, third entry is cluster end of readme file
   },
 
   //------------- Block2: Root Directory -------------//
-  {
-      // first entry is volume label
-      'T' , 'i' , 'n' , 'y' , 'U' , 'S' , 'B' , ' ' , 'M' , 'S' , 'C' , 0x08, 0x00, 0x00, 0x00, 0x00,
-      0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4F, 0x6D, 0x65, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-      // second entry is readme file
-      'R' , 'E' , 'A' , 'D' , 'M' , 'E' , ' ' , ' ' , 'T' , 'X' , 'T' , 0x20, 0x00, 0xC6, 0x52, 0x6D,
-      0x65, 0x43, 0x65, 0x43, 0x00, 0x00, 0x88, 0x6D, 0x65, 0x43, 0x02, 0x00,
-      sizeof(README_CONTENTS)-1, 0x00, 0x00, 0x00 // readme's files size (4 Bytes)
+{
+    // first entry is volume label
+    'T', 'i', 'n', 'y', 'U', 'S', 'B', ' ', 'M', 'S', 'C', 0x08, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4F, 0x6D, 0x65, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    // second entry is readme file
+    'R', 'E', 'A', 'D', 'M', 'E', ' ', ' ', 'T', 'X', 'T', 0x20, 0x00, 0xC6, 0x52, 0x6D,
+    0x65, 0x43, 0x65, 0x43, 0x00, 0x00, 0x88, 0x6D, 0x65, 0x43, 0x02, 0x00,
+    sizeof(README_CONTENTS) - 1, 0x00, 0x00, 0x00// readme's files size (4 Bytes)
   },
 
   //------------- Block3: Readme Content -------------//
@@ -121,23 +118,21 @@ uint8_t msc_disk[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
 
 // Invoked when received SCSI_CMD_INQUIRY
 // Application fill vendor id, product id and revision with string up to 8, 16, 4 characters respectively
-void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16], uint8_t product_rev[4])
-{
+void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16], uint8_t product_rev[4]) {
   (void) lun;
 
   const char vid[] = "TinyUSB";
   const char pid[] = "Mass Storage";
   const char rev[] = "1.0";
 
-  memcpy(vendor_id  , vid, strlen(vid));
-  memcpy(product_id , pid, strlen(pid));
+  memcpy(vendor_id, vid, strlen(vid));
+  memcpy(product_id, pid, strlen(pid));
   memcpy(product_rev, rev, strlen(rev));
 }
 
 // Invoked when received Test Unit Ready command.
 // return true allowing host to read/write this LUN e.g SD card inserted
-bool tud_msc_test_unit_ready_cb(uint8_t lun)
-{
+bool tud_msc_test_unit_ready_cb(uint8_t lun) {
   (void) lun;
 
   // RAM disk is ready until ejected
@@ -152,29 +147,24 @@ bool tud_msc_test_unit_ready_cb(uint8_t lun)
 
 // 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 tud_msc_capacity_cb(uint8_t lun, uint32_t *block_count, uint16_t *block_size) {
   (void) lun;
 
   *block_count = DISK_BLOCK_NUM;
-  *block_size  = DISK_BLOCK_SIZE;
+  *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
-bool tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject)
-{
+bool 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)
-    {
+  if (load_eject) {
+    if (start) {
       // load disk storage
-    }else
-    {
+    } else {
       // unload disk storage
       ejected = true;
     }
@@ -185,52 +175,51 @@ bool tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, boo
 
 // 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)
-{
+int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void *buffer, uint32_t bufsize) {
   (void) lun;
 
   // out of ramdisk
-  if ( lba >= DISK_BLOCK_NUM ) {
+  if (lba >= DISK_BLOCK_NUM) {
     return -1;
   }
 
   // Check for overflow of offset + bufsize
-  if ( offset + bufsize > DISK_BLOCK_SIZE ) {
+  if (offset + bufsize > DISK_BLOCK_SIZE) {
     return -1;
   }
 
-  uint8_t const* addr = msc_disk[lba] + offset;
+  uint8_t const *addr = msc_disk[lba] + offset;
   memcpy(buffer, addr, bufsize);
 
   return (int32_t) bufsize;
 }
 
-bool tud_msc_is_writable_cb (uint8_t lun)
-{
+bool tud_msc_is_writable_cb(uint8_t lun) {
   (void) lun;
 
-#ifdef CFG_EXAMPLE_MSC_READONLY
+  #ifdef CFG_EXAMPLE_MSC_READONLY
   return false;
-#else
+  #else
   return true;
-#endif
+  #endif
 }
 
 // Callback invoked when received WRITE10 command.
 // Process data in buffer to disk's storage and return number of written bytes
-int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t* buffer, uint32_t bufsize)
-{
+int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t *buffer, uint32_t bufsize) {
   (void) lun;
 
   // out of ramdisk
-  if ( lba >= DISK_BLOCK_NUM ) return -1;
+  if (lba >= DISK_BLOCK_NUM) return -1;
 
-#ifndef CFG_EXAMPLE_MSC_READONLY
-  uint8_t* addr = msc_disk[lba] + offset;
+  #ifndef CFG_EXAMPLE_MSC_READONLY
+  uint8_t *addr = msc_disk[lba] + offset;
   memcpy(addr, buffer, bufsize);
-#else
-  (void) lba; (void) offset; (void) buffer;
-#endif
+  #else
+  (void) lba;
+  (void) offset;
+  (void) buffer;
+  #endif
 
   return (int32_t) bufsize;
 }
@@ -238,42 +227,18 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t*
 // Callback invoked when received an SCSI command not in built-in list below
 // - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE
 // - READ10 and WRITE10 has their own callbacks
-int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize)
-{
-  // read10 & write10 has their own callback and MUST not be handled here
-
-  void const* response = NULL;
-  int32_t resplen = 0;
+int32_t tud_msc_scsi_cb(uint8_t lun, uint8_t const scsi_cmd[16], void *buffer, uint16_t bufsize) {
+  (void) buffer;
+  (void) bufsize;
 
-  // most scsi handled is input
-  bool in_xfer = true;
-
-  switch (scsi_cmd[0])
-  {
+  switch (scsi_cmd[0]) {
     default:
       // Set Sense = Invalid Command Operation
       tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00);
 
       // negative means error -> tinyusb could stall and/or response with failed status
-      resplen = -1;
-    break;
-  }
-
-  // return resplen must not larger than bufsize
-  if ( resplen > bufsize ) resplen = bufsize;
-
-  if ( response && (resplen > 0) )
-  {
-    if(in_xfer)
-    {
-      memcpy(buffer, response, (size_t) resplen);
-    }else
-    {
-      // SCSI output
-    }
+      return -1;
   }
-
-  return (int32_t) resplen;
 }
 
 #endif
diff --git a/examples/device/msc_dual_lun/src/msc_disk_dual.c b/examples/device/msc_dual_lun/src/msc_disk_dual.c
index b44b77c6c..1f7fb98c7 100644
--- a/examples/device/msc_dual_lun/src/msc_disk_dual.c
+++ b/examples/device/msc_dual_lun/src/msc_disk_dual.c
@@ -55,8 +55,7 @@ If you find any bugs or get any questions, feel free to file an\r\n\
 issue at github.com/hathach/tinyusb"
 
 
-MSC_CONST uint8_t msc_disk0[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] =
-{
+MSC_CONST uint8_t msc_disk0[DISK_BLOCK_NUM][DISK_BLOCK_SIZE] = {
   //------------- Block0: Boot Sector -------------//
   // byte_per_sector    = DISK_BLOCK_SIZE; fat12_sector_num_16  = DISK_BLOCK_NUM;
   // sector_per_cluster = 1; reserved_sectors = 1;
@@ -283,9 +282,11 @@ bool tud_msc_is_writable_cb(uint8_t lun) {
 // Process data in buffer to disk's storage and return number of written bytes
 int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t* buffer, uint32_t bufsize) {
   // out of ramdisk
-  if (lba >= DISK_BLOCK_NUM) return -1;
+  if (lba >= DISK_BLOCK_NUM) {
+    return -1;
+  }
 
-#if defined(CFG_EXAMPLE_MSC_READONLY) || defined(CFG_EXAMPLE_MSC_DUAL_READONLY)
+  #if defined(CFG_EXAMPLE_MSC_READONLY) || defined(CFG_EXAMPLE_MSC_DUAL_READONLY)
   (void) lun;
   (void) lba;
   (void) offset;
@@ -302,11 +303,8 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t*
 // - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE
 // - READ10 and WRITE10 has their own callbacks (MUST not be handled here)
 int32_t tud_msc_scsi_cb(uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, uint16_t bufsize) {
-  void const* response = NULL;
-  int32_t resplen = 0;
-
-  // most scsi handled is input
-  bool in_xfer = true;
+  (void) buffer;
+  (void) bufsize;
 
   switch (scsi_cmd[0]) {
     default:
@@ -316,19 +314,6 @@ int32_t tud_msc_scsi_cb(uint8_t lun, uint8_t const scsi_cmd[16], void* buffer, u
       // negative means error -> tinyusb could stall and/or response with failed status
       return -1;
   }
-
-  // return resplen must not larger than bufsize
-  if (resplen > bufsize) resplen = bufsize;
-
-  if (response && (resplen > 0)) {
-    if (in_xfer) {
-      memcpy(buffer, response, (size_t) resplen);
-    } else {
-      // SCSI output
-    }
-  }
-
-  return resplen;
 }
 
 #endif
diff --git a/examples/dual/host_hid_to_device_cdc/src/main.c b/examples/dual/host_hid_to_device_cdc/src/main.c
index 633f7a6ac..6f30ca381 100644
--- a/examples/dual/host_hid_to_device_cdc/src/main.c
+++ b/examples/dual/host_hid_to_device_cdc/src/main.c
@@ -190,7 +190,9 @@ void tuh_hid_umount_cb(uint8_t dev_addr, uint8_t instance) {
 // look up new key in previous keys
 static inline bool find_key_in_report(hid_keyboard_report_t const* report, uint8_t keycode) {
   for (uint8_t i = 0; i < 6; i++) {
-    if (report->keycode[i] == keycode) return true;
+    if (report->keycode[i] == keycode) {
+      return true;
+    }
   }
 
   return false;
@@ -230,7 +232,9 @@ static void process_kbd_report(uint8_t dev_addr, hid_keyboard_report_t const* re
     // TODO example skips key released
   }
 
-  if (flush) tud_cdc_write_flush();
+  if (flush) {
+    tud_cdc_write_flush();
+  }
 
   prev_report = *report;
 }
diff --git a/examples/dual/host_info_to_device_cdc/src/main.c b/examples/dual/host_info_to_device_cdc/src/main.c
index 7e593f234..a2a505952 100644
--- a/examples/dual/host_info_to_device_cdc/src/main.c
+++ b/examples/dual/host_info_to_device_cdc/src/main.c
@@ -78,6 +78,22 @@ static void print_device_info(uint8_t daddr, const tusb_desc_device_t* desc_devi
 void led_blinking_task(void);
 void cdc_task(void);
 
+#define cdc_printf(...)                                           \
+  do {                                                            \
+    char _tempbuf[256];                                           \
+    char* _bufptr = _tempbuf;                                     \
+    uint32_t count = (uint32_t) sprintf(_tempbuf, __VA_ARGS__);   \
+    while (count > 0) {                                           \
+        uint32_t wr_count = tud_cdc_write(_bufptr, count);        \
+        count -= wr_count;                                        \
+        _bufptr += wr_count;                                      \
+        if (count > 0){                                           \
+          tud_task();                                             \
+          tud_cdc_write_flush();                                  \
+        }                                                         \
+    }                                                             \
+  } while(0)
+
 /*------------- MAIN -------------*/
 int main(void) {
   board_init();
@@ -160,22 +176,6 @@ void cdc_task(void) {
 //--------------------------------------------------------------------+
 // Host Get device information
 //--------------------------------------------------------------------+
-#define cdc_printf(...)                          \
-  do {                                           \
-    char _tempbuf[256];                          \
-    char* _bufptr = _tempbuf;                        \
-    uint32_t count = (uint32_t) sprintf(_tempbuf, __VA_ARGS__);  \
-    while (count > 0) { \
-        uint32_t wr_count = tud_cdc_write(_bufptr, count); \
-        count -= wr_count; \
-        _bufptr += wr_count; \
-        if (count > 0){ \
-          tud_task();\
-          tud_cdc_write_flush(); \
-        } \
-    } \
-  } while(0)
-
 static void print_device_info(uint8_t daddr, const tusb_desc_device_t* desc_device) {
   // Get String descriptor using Sync API
   uint16_t serial[64];
@@ -232,12 +232,14 @@ void tuh_enum_descriptor_device_cb(uint8_t daddr, tusb_desc_device_t const* desc
 }
 
 void tuh_mount_cb(uint8_t daddr) {
-  printf("mounted device %u\r\n", daddr);
+  cdc_printf("mounted device %u\r\n", daddr);
+  tud_cdc_write_flush();
   is_print[daddr] = true;
 }
 
 void tuh_umount_cb(uint8_t daddr) {
-  printf("unmounted device %u\r\n", daddr);
+  cdc_printf("unmounted device %u\r\n", daddr);
+  tud_cdc_write_flush();
   is_print[daddr] = false;
 }
 
@@ -249,7 +251,9 @@ void led_blinking_task(void) {
   static bool led_state = false;
 
   // Blink every interval ms
-  if (board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  if (board_millis() - start_ms < blink_interval_ms) {
+    return;// not enough time
+  }
   start_ms += blink_interval_ms;
 
   board_led_write(led_state);
@@ -300,7 +304,9 @@ static int _count_utf8_bytes(const uint16_t *buf, size_t len) {
 }
 
 static void print_utf16(uint16_t *temp_buf, size_t buf_len) {
-  if ((temp_buf[0] & 0xff) == 0) return;  // empty
+  if ((temp_buf[0] & 0xff) == 0) {
+    return;// empty
+  }
   size_t utf16_len = ((temp_buf[0] & 0xff) - 2) / sizeof(uint16_t);
   size_t utf8_len = (size_t) _count_utf8_bytes(temp_buf + 1, utf16_len);
   _convert_utf16le_to_utf8(temp_buf + 1, utf16_len, (uint8_t *) temp_buf, sizeof(uint16_t) * buf_len);
diff --git a/examples/host/cdc_msc_hid/src/hid_app.c b/examples/host/cdc_msc_hid/src/hid_app.c
index a751c9c80..6f01d6f45 100644
--- a/examples/host/cdc_msc_hid/src/hid_app.c
+++ b/examples/host/cdc_msc_hid/src/hid_app.c
@@ -29,14 +29,9 @@
 //--------------------------------------------------------------------+
 // MACRO TYPEDEF CONSTANT ENUM DECLARATION
 //--------------------------------------------------------------------+
+#define MAX_REPORT 4
 
-// If your host terminal support ansi escape code such as TeraTerm
-// it can be use to simulate mouse cursor movement within terminal
-#define USE_ANSI_ESCAPE   0
-
-#define MAX_REPORT  4
-
-static uint8_t const keycode2ascii[128][2] =  { HID_KEYCODE_TO_ASCII };
+static uint8_t const keycode2ascii[128][2] = {HID_KEYCODE_TO_ASCII};
 
 // Each HID instance can has multiple reports
 static struct {
@@ -45,8 +40,8 @@ static struct {
 } hid_info[CFG_TUH_HID];
 
 static void process_kbd_report(hid_keyboard_report_t const *report);
-static void process_mouse_report(hid_mouse_report_t const * report);
-static void process_generic_report(uint8_t dev_addr, uint8_t instance, uint8_t const* report, uint16_t len);
+static void process_mouse_report(hid_mouse_report_t const *report);
+static void process_generic_report(uint8_t dev_addr, uint8_t instance, uint8_t const *report, uint16_t len);
 
 void hid_app_task(void) {
   // nothing to do
@@ -70,7 +65,7 @@ void tuh_hid_mount_cb(uint8_t dev_addr, uint8_t instance, uint8_t const *desc_re
 
   printf("HID Interface Protocol = %s\r\n", protocol_str[itf_protocol]);
 
-  // By default host stack will use activate boot protocol on supported interface.
+  // By default, host stack will use boot protocol on supported interface.
   // Therefore for this simple example, we only need to parse generic report descriptor (with built-in parser)
   if (itf_protocol == HID_ITF_PROTOCOL_NONE) {
     hid_info[instance].report_count = tuh_hid_parse_report_descriptor(hid_info[instance].report_info, MAX_REPORT, desc_report, desc_len);
@@ -121,7 +116,7 @@ void tuh_hid_report_received_cb(uint8_t dev_addr, uint8_t instance, uint8_t cons
 //--------------------------------------------------------------------+
 
 // look up new key in previous keys
-static inline bool find_key_in_report(hid_keyboard_report_t const* report, uint8_t keycode) {
+static inline bool find_key_in_report(hid_keyboard_report_t const *report, uint8_t keycode) {
   for (uint8_t i = 0; i < 6; i++) {
     if (report->keycode[i] == keycode) {
       return true;
@@ -130,28 +125,25 @@ static inline bool find_key_in_report(hid_keyboard_report_t const* report, uint8
   return false;
 }
 
-static void process_kbd_report(hid_keyboard_report_t const *report)
-{
-  static hid_keyboard_report_t prev_report = { 0, 0, {0} }; // previous report to check key released
+static void process_kbd_report(hid_keyboard_report_t const *report) {
+  static hid_keyboard_report_t prev_report = {0, 0, {0}};// previous report to check key released
 
   //------------- example code ignore control (non-printable) key affects -------------//
-  for(uint8_t i=0; i<6; i++)
-  {
-    if ( report->keycode[i] )
-    {
-      if ( find_key_in_report(&prev_report, report->keycode[i]) )
-      {
+  for (uint8_t i = 0; i < 6; i++) {
+    if (report->keycode[i]) {
+      if (find_key_in_report(&prev_report, report->keycode[i])) {
         // exist in previous report means the current key is holding
-      }else
-      {
+      } else {
         // not existed in previous report means the current key is pressed
         bool const is_shift = report->modifier & (KEYBOARD_MODIFIER_LEFTSHIFT | KEYBOARD_MODIFIER_RIGHTSHIFT);
         uint8_t ch = keycode2ascii[report->keycode[i]][is_shift ? 1 : 0];
         putchar(ch);
-        if ( ch == '\r' ) putchar('\n'); // added new line for enter key
+        if (ch == '\r') {
+          putchar('\n');
+        }
 
-        #ifndef __ICCARM__ // TODO IAR doesn't support stream control ?
-        fflush(stdout); // flush right away, else nanolib will wait for newline
+        #ifndef __ICCARM__     // TODO IAR doesn't support stream control ?
+        fflush(stdout);// flush right away, else nanolib will wait for newline
         #endif
       }
     }
@@ -166,55 +158,22 @@ static void process_kbd_report(hid_keyboard_report_t const *report)
 //--------------------------------------------------------------------+
 
 static void cursor_movement(int8_t x, int8_t y, int8_t wheel) {
-#if USE_ANSI_ESCAPE
-  // Move X using ansi escape
-  if ( x < 0)
-  {
-    printf(ANSI_CURSOR_BACKWARD(%d), (-x)); // move left
-  }else if ( x > 0)
-  {
-    printf(ANSI_CURSOR_FORWARD(%d), x); // move right
-  }
-
-  // Move Y using ansi escape
-  if ( y < 0)
-  {
-    printf(ANSI_CURSOR_UP(%d), (-y)); // move up
-  }else if ( y > 0)
-  {
-    printf(ANSI_CURSOR_DOWN(%d), y); // move down
-  }
-
-  // Scroll using ansi escape
-  if (wheel < 0)
-  {
-    printf(ANSI_SCROLL_UP(%d), (-wheel)); // scroll up
-  }else if (wheel > 0)
-  {
-    printf(ANSI_SCROLL_DOWN(%d), wheel); // scroll down
-  }
-
-  printf("\r\n");
-#else
   printf("(%d %d %d)\r\n", x, y, wheel);
-#endif
 }
 
-static void process_mouse_report(hid_mouse_report_t const * report)
-{
-  static hid_mouse_report_t prev_report = { 0 };
+static void process_mouse_report(hid_mouse_report_t const *report) {
+  static hid_mouse_report_t prev_report = {0};
 
-  //------------- button state  -------------//
+  // button state
   uint8_t button_changed_mask = report->buttons ^ prev_report.buttons;
-  if ( button_changed_mask & report->buttons)
-  {
+  if (button_changed_mask & report->buttons) {
     printf(" %c%c%c ",
-       report->buttons & MOUSE_BUTTON_LEFT   ? 'L' : '-',
-       report->buttons & MOUSE_BUTTON_MIDDLE ? 'M' : '-',
-       report->buttons & MOUSE_BUTTON_RIGHT  ? 'R' : '-');
+           report->buttons & MOUSE_BUTTON_LEFT ? 'L' : '-',
+           report->buttons & MOUSE_BUTTON_MIDDLE ? 'M' : '-',
+           report->buttons & MOUSE_BUTTON_RIGHT ? 'R' : '-');
   }
 
-  //------------- cursor movement -------------//
+  // cursor movement
   cursor_movement(report->x, report->y, report->wheel);
 }
 
@@ -263,18 +222,23 @@ static void process_generic_report(uint8_t dev_addr, uint8_t instance, uint8_t c
   if (rpt_info->usage_page == HID_USAGE_PAGE_DESKTOP) {
     switch (rpt_info->usage) {
       case HID_USAGE_DESKTOP_KEYBOARD:
-        TU_LOG1("HID receive keyboard report\r\n");
+        TU_LOG2("HID receive keyboard report\r\n");
         // Assume keyboard follow boot report layout
         process_kbd_report((hid_keyboard_report_t const *) report);
         break;
 
       case HID_USAGE_DESKTOP_MOUSE:
-        TU_LOG1("HID receive mouse report\r\n");
+        TU_LOG2("HID receive mouse report\r\n");
         // Assume mouse follow boot report layout
         process_mouse_report((hid_mouse_report_t const *) report);
         break;
 
       default:
+        printf("report[%u] ", rpt_info->report_id);
+        for (uint8_t i = 0; i < len; i++) {
+          printf("%02X ", report[i]);
+        }
+        printf("\r\n");
         break;
     }
   }
diff --git a/examples/host/cdc_msc_hid/src/msc_app.c b/examples/host/cdc_msc_hid/src/msc_app.c
index 1d7e18e6e..0e9c99766 100644
--- a/examples/host/cdc_msc_hid/src/msc_app.c
+++ b/examples/host/cdc_msc_hid/src/msc_app.c
@@ -30,13 +30,11 @@
 //--------------------------------------------------------------------+
 static scsi_inquiry_resp_t inquiry_resp;
 
-bool inquiry_complete_cb(uint8_t dev_addr, tuh_msc_complete_data_t const * cb_data)
-{
+static bool inquiry_complete_cb(uint8_t dev_addr, tuh_msc_complete_data_t const * cb_data) {
   msc_cbw_t const* cbw = cb_data->cbw;
   msc_csw_t const* csw = cb_data->csw;
 
-  if (csw->status != 0)
-  {
+  if (csw->status != 0) {
     printf("Inquiry failed\r\n");
     return false;
   }
@@ -55,16 +53,14 @@ bool inquiry_complete_cb(uint8_t dev_addr, tuh_msc_complete_data_t const * cb_da
 }
 
 //------------- IMPLEMENTATION -------------//
-void tuh_msc_mount_cb(uint8_t dev_addr)
-{
+void tuh_msc_mount_cb(uint8_t dev_addr) {
   printf("A MassStorage device is mounted\r\n");
 
   uint8_t const lun = 0;
   tuh_msc_inquiry(dev_addr, lun, &inquiry_resp, inquiry_complete_cb, 0);
 }
 
-void tuh_msc_umount_cb(uint8_t dev_addr)
-{
+void tuh_msc_umount_cb(uint8_t dev_addr) {
   (void) dev_addr;
   printf("A MassStorage device is unmounted\r\n");
 }
diff --git a/examples/host/msc_file_explorer/Makefile b/examples/host/msc_file_explorer/Makefile
index c7d6a7cae..f0872376f 100644
--- a/examples/host/msc_file_explorer/Makefile
+++ b/examples/host/msc_file_explorer/Makefile
@@ -22,6 +22,6 @@ SRC_C += \
   $(FATFS_PATH)/ffunicode.c \
 
 # suppress warning caused by fatfs
-CFLAGS += -Wno-error=cast-qual
+CFLAGS_GCC += -Wno-error=cast-qual
 
 include ../../build_system/make/rules.mk