more with -Wcast-qual

examples/device/cdc_msc_freertos/Makefile

@@ -29,6 +29,9 @@ SRC_C += \
 	$(FREERTOS_SRC)/timers.c \
 	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)/*.c))
 
+# Suppress FreeRTOS warnings
+CFLAGS += -Wno-error=cast-qual
+
 # FreeRTOS (lto + Os) linker issue
 LDFLAGS += -Wl,--undefined=vTaskSwitchContext
 

examples/device/hid_composite_freertos/Makefile

@@ -28,6 +28,9 @@ SRC_C += \
 	$(FREERTOS_SRC)/timers.c \
 	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)/*.c))
 
+# Suppress FreeRTOS warnings
+CFLAGS += -Wno-error=cast-qual
+
 # FreeRTOS (lto + Os) linker issue
 LDFLAGS += -Wl,--undefined=vTaskSwitchContext
 

examples/device/uac2_headset/src/main.c

@@ -36,11 +36,12 @@
 
 // List of supported sample rates
 #if defined(__RX__)
-const uint32_t sample_rates[]       = {44100, 48000};
+  const uint32_t sample_rates[] = {44100, 48000};
 #else
-const uint32_t sample_rates[]       = {44100, 48000, 88200, 96000};
+  const uint32_t sample_rates[] = {44100, 48000, 88200, 96000};
 #endif
-uint32_t       current_sample_rate  = 44100;
+
+uint32_t current_sample_rate  = 44100;
 
 #define N_SAMPLE_RATES  TU_ARRAY_SIZE(sample_rates)
 
@@ -202,7 +203,7 @@ 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 *)buf)->bCur;
+    current_sample_rate = ((audio_control_cur_4_t const *)buf)->bCur;
 
     TU_LOG1("Clock set current freq: %d\r\n", current_sample_rate);
 
@@ -264,7 +265,7 @@ static bool tud_audio_feature_unit_set_request(uint8_t rhport, audio_control_req
   {
     TU_VERIFY(request->wLength == sizeof(audio_control_cur_1_t));
 
-    mute[request->bChannelNumber] = ((audio_control_cur_1_t *)buf)->bCur;
+    mute[request->bChannelNumber] = ((audio_control_cur_1_t const *)buf)->bCur;
 
     TU_LOG1("Set channel %d Mute: %d\r\n", request->bChannelNumber, mute[request->bChannelNumber]);
 
@@ -295,7 +296,7 @@ static bool tud_audio_feature_unit_set_request(uint8_t rhport, audio_control_req
 // Invoked when audio class specific get request received for an entity
 bool tud_audio_get_req_entity_cb(uint8_t rhport, tusb_control_request_t const *p_request)
 {
-  audio_control_request_t *request = (audio_control_request_t *)p_request;
+  audio_control_request_t const *request = (audio_control_request_t const *)p_request;
 
   if (request->bEntityID == UAC2_ENTITY_CLOCK)
     return tud_audio_clock_get_request(rhport, request);

examples/device/video_capture/src/main.c

@@ -166,7 +166,7 @@ void video_task(void)
     already_sent = 1;
     start_ms = board_millis();
 #ifdef CFG_EXAMPLE_VIDEO_READONLY
-    tud_video_n_frame_xfer(0, 0, (void*)&frame_buffer[(frame_num % (FRAME_WIDTH / 2)) * 4],
+    tud_video_n_frame_xfer(0, 0, (void*)(uintptr_t) &frame_buffer[(frame_num % (FRAME_WIDTH / 2)) * 4],
                            FRAME_WIDTH * FRAME_HEIGHT * 16/8);
 #else
     fill_color_bar(frame_buffer, frame_num);
@@ -180,7 +180,7 @@ void video_task(void)
   start_ms += interval_ms;
 
 #ifdef CFG_EXAMPLE_VIDEO_READONLY
-  tud_video_n_frame_xfer(0, 0, (void*)&frame_buffer[(frame_num % (FRAME_WIDTH / 2)) * 4],
+  tud_video_n_frame_xfer(0, 0, (void*)(uintptr_t) &frame_buffer[(frame_num % (FRAME_WIDTH / 2)) * 4],
                          FRAME_WIDTH * FRAME_HEIGHT * 16/8);
 #else
   fill_color_bar(frame_buffer, frame_num);

examples/device/webusb_serial/src/main.c

@@ -179,7 +179,7 @@ bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_requ
         case VENDOR_REQUEST_WEBUSB:
           // match vendor request in BOS descriptor
           // Get landing page url
-          return tud_control_xfer(rhport, request, (void*) &desc_url, desc_url.bLength);
+          return tud_control_xfer(rhport, request, (void*)(uintptr_t) &desc_url, desc_url.bLength);
 
         case VENDOR_REQUEST_MICROSOFT:
           if ( request->wIndex == 7 )
@@ -188,7 +188,7 @@ bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_requ
             uint16_t total_len;
             memcpy(&total_len, desc_ms_os_20+8, 2);
 
-            return tud_control_xfer(rhport, request, (void*) desc_ms_os_20, total_len);
+            return tud_control_xfer(rhport, request, (void*)(uintptr_t) desc_ms_os_20, total_len);
           }else
           {
             return false;

examples/make.mk

@@ -104,7 +104,8 @@ CFLAGS += \
   -Wmissing-format-attribute \
   -Wunreachable-code \
   -Wcast-align \
-  -Wcast-function-type
+  -Wcast-function-type \
+  -Wcast-qual
 
 # Debugging/Optimization
 ifeq ($(DEBUG), 1)