fix iar build

Author: hathach

examples/device/mtp/src/mtp_fs_example.c

@@ -111,8 +111,8 @@ static fs_file_t fs_objects[FS_MAX_FILE_COUNT] = {
     .image_bit_depth = 0,
     .parent = 0,
     .association_type = MTP_ASSOCIATION_UNDEFINED,
+    .size = sizeof(README_TXT_CONTENT)-1,
     .data = (uint8_t*) (uintptr_t) README_TXT_CONTENT,
-    .size = sizeof(README_TXT_CONTENT)-1
   },
   {
     .name = { 't', 'i', 'n', 'y', 'u', 's', 'b', '.', 'p', 'n', 'g', 0 }, // "tinyusb.png"
@@ -123,8 +123,8 @@ static fs_file_t fs_objects[FS_MAX_FILE_COUNT] = {
     .image_bit_depth = 32,
     .parent = 0,
     .association_type = MTP_ASSOCIATION_UNDEFINED,
-    .data = (uint8_t*) (uintptr_t) logo_bin,
-    .size = logo_len,
+    .size = LOGO_LEN,
+    .data = (uint8_t*) (uintptr_t) logo_bin
   }
 };
 
@@ -391,7 +391,7 @@ static int32_t fs_get_storage_info(tud_mtp_cb_data_t* cb_data) {
   const uint32_t storage_id = command->params[0];
   TU_VERIFY(SUPPORTED_STORAGE_ID == storage_id, -1);
   // update storage info with current free space
-  storage_info.max_capacity_in_bytes = sizeof(README_TXT_CONTENT) + logo_len + FS_MAX_CAPACITY_BYTES;
+  storage_info.max_capacity_in_bytes = sizeof(README_TXT_CONTENT) + LOGO_LEN + FS_MAX_CAPACITY_BYTES;
   storage_info.free_space_in_objects = FS_MAX_FILE_COUNT - fs_get_file_count();
   storage_info.free_space_in_bytes = storage_info.free_space_in_objects ? FS_MAX_CAPACITY_BYTES : 0;
   mtp_container_add_raw(io_container, &storage_info, sizeof(storage_info));

examples/device/mtp/src/tinyusb_logo_png.h

@@ -1,6 +1,6 @@
 // convert using tools/file2carray.py
-const size_t logo_len = 2733;
-const uint8_t logo_bin[] __attribute__((aligned(16))) = {
+enum { LOGO_LEN = 2733 };
+static const uint8_t logo_bin[] __attribute__((aligned(16))) = {
     0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a, 0x00, 0x00, 0x00, 0x0d, 0x49, 0x48, 0x44, 0x52,
     0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00, 0x40, 0x08, 0x06, 0x00, 0x00, 0x00, 0xd2, 0xd6, 0x7f,
     0x7f, 0x00, 0x00, 0x00, 0x06, 0x62, 0x4b, 0x47, 0x44, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0xa0,

tools/file2carray.py

@@ -35,7 +35,8 @@ def main():
             fout_name = fin_name + '.h'
             with open(fout_name, 'w') as fout:
                 print(f"Converting {fin_name} to {fout_name}")
-                fout.write(f'const size_t bindata_len = {len(contents)};\n')
+                fout.write(f'enum {{ BINDATA_LEN = {len(contents)} }};\n')
+                fout.write(f'const size_t bindata_len = BINDATA_LEN;\n')
                 fout.write(f'const uint8_t bindata[] __attribute__((aligned(16))) = {{')
                 print_carray(fout, contents)
                 fout.write('};\n')