fix all device examples warnings

examples/device/midi_test/src/main.c

@@ -140,7 +140,7 @@ void midi_task(void)
   start_ms += 286;
 
   // Previous positions in the note sequence.
-  int previous = note_pos - 1;
+  int previous = (int) (note_pos - 1);
 
   // If we currently are at position 0, set the
   // previous position to the last note in the sequence.

examples/device/msc_dual_lun/src/msc_disk_dual.c

@@ -277,7 +277,7 @@ int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void* buff
   uint8_t const* addr = (lun ? msc_disk1[lba] : msc_disk0[lba]) + offset;
   memcpy(buffer, addr, bufsize);
 
-  return bufsize;
+  return (int32_t) bufsize;
 }
 
 bool tud_msc_is_writable_cb (uint8_t lun)
@@ -305,7 +305,7 @@ int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t*
   (void) lun; (void) lba; (void) offset; (void) buffer;
 #endif
 
-  return bufsize;
+  return (int32_t) bufsize;
 }
 
 // Callback invoked when received an SCSI command not in built-in list below
@@ -339,7 +339,7 @@ int32_t tud_msc_scsi_cb (uint8_t lun, uint8_t const scsi_cmd[16], void* buffer,
   {
     if(in_xfer)
     {
-      memcpy(buffer, response, resplen);
+      memcpy(buffer, response, (size_t) resplen);
     }else
     {
       // SCSI output

examples/device/uac2_headset/src/main.c

@@ -159,7 +159,7 @@ static bool tud_audio_clock_get_request(uint8_t rhport, audio_control_request_t
     {
       TU_LOG1("Clock get current freq %lu\r\n", current_sample_rate);
 
-      audio_control_cur_4_t curf = { tu_htole32(current_sample_rate) };
+      audio_control_cur_4_t curf = { (int32_t) tu_htole32(current_sample_rate) };
       return tud_audio_buffer_and_schedule_control_xfer(rhport, (tusb_control_request_t const *)request, &curf, sizeof(curf));
     }
     else if (request->bRequest == AUDIO_CS_REQ_RANGE)
@@ -171,8 +171,8 @@ static bool tud_audio_clock_get_request(uint8_t rhport, audio_control_request_t
       TU_LOG1("Clock get %d freq ranges\r\n", N_SAMPLE_RATES);
       for(uint8_t i = 0; i < N_SAMPLE_RATES; i++)
       {
-        rangef.subrange[i].bMin = sample_rates[i];
-        rangef.subrange[i].bMax = sample_rates[i];
+        rangef.subrange[i].bMin = (int32_t) sample_rates[i];
+        rangef.subrange[i].bMax = (int32_t) sample_rates[i];
         rangef.subrange[i].bRes = 0;
         TU_LOG1("Range %d (%d, %d, %d)\r\n", i, (int)rangef.subrange[i].bMin, (int)rangef.subrange[i].bMax, (int)rangef.subrange[i].bRes);
       }
@@ -204,7 +204,7 @@ static bool tud_audio_clock_set_request(uint8_t rhport, audio_control_request_t
   {
     TU_VERIFY(request->wLength == sizeof(audio_control_cur_4_t));
 
-    current_sample_rate = ((audio_control_cur_4_t const *)buf)->bCur;
+    current_sample_rate = (uint32_t) ((audio_control_cur_4_t const *)buf)->bCur;
 
     TU_LOG1("Clock set current freq: %ld\r\n", current_sample_rate);
 
@@ -403,9 +403,9 @@ void audio_task(void)
         // Combine two channels into one
         int32_t left = *src++;
         int32_t right = *src++;
-        *dst++ = (left >> 1) + (right >> 1);
+        *dst++ = (int16_t) ((left >> 1) + (right >> 1));
       }
-      tud_audio_write((uint8_t *)mic_buf, spk_data_size / 2);
+      tud_audio_write((uint8_t *)mic_buf, (uint16_t) (spk_data_size / 2));
       spk_data_size = 0;
     }
     else if (current_resolution == 24)
@@ -418,9 +418,9 @@ void audio_task(void)
         // Combine two channels into one
         int32_t left = *src++;
         int32_t right = *src++;
-        *dst++ = ((left >> 1) + (right >> 1)) & 0xffffff00;
+        *dst++ = (int32_t) ((uint32_t) ((left >> 1) + (right >> 1)) & 0xffffff00ul);
       }
-      tud_audio_write((uint8_t *)mic_buf, spk_data_size / 2);
+      tud_audio_write((uint8_t *)mic_buf, (uint16_t) (spk_data_size / 2));
       spk_data_size = 0;
     }
   }

examples/device/uac2_headset/src/usb_descriptors.c

@@ -165,7 +165,7 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
   }
 
   // first byte is length (including header), second byte is string type
-  _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2 * chr_count + 2);
+  _desc_str[0] = (uint16_t) ((TUSB_DESC_STRING << 8 ) | (2*chr_count + 2));
 
   return _desc_str;
 }