2 files changed, 9 insertions, 1 deletions
diff --git a/testhal/STM32/STM32F4xx/USB_CDC/debug/STM32F4xx-USB_CDC (OpenOCD, Flash and Run).launch b/testhal/STM32/STM32F4xx/USB_CDC/debug/STM32F4xx-USB_CDC (OpenOCD, Flash and Run).launch
index 9f4df03ef..a7cd1292e 100644
--- a/testhal/STM32/STM32F4xx/USB_CDC/debug/STM32F4xx-USB_CDC (OpenOCD, Flash and Run).launch
+++ b/testhal/STM32/STM32F4xx/USB_CDC/debug/STM32F4xx-USB_CDC (OpenOCD, Flash and Run).launch
@@ -33,7 +33,7 @@
 <intAttribute key="org.eclipse.cdt.launch.ATTR_BUILD_BEFORE_LAUNCH_ATTR" value="2"/>
 <stringAttribute key="org.eclipse.cdt.launch.COREFILE_PATH" value=""/>
 <stringAttribute key="org.eclipse.cdt.launch.DEBUGGER_REGISTER_GROUPS" value=""/>
-<stringAttribute key="org.eclipse.cdt.launch.FORMAT" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&lt;contentList&gt;&lt;content id=&quot;bcounter-null-obqTryFlushI-(format)&quot; val=&quot;4&quot;/&gt;&lt;content id=&quot;n-sduSOFHookI-(format)&quot; val=&quot;4&quot;/&gt;&lt;/contentList&gt;"/>
+<stringAttribute key="org.eclipse.cdt.launch.FORMAT" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&lt;contentList&gt;&lt;content id=&quot;DIEPTSIZ-ie[1]-ie-otg-usbp-config-null-_idle_thread-(format)&quot; val=&quot;4&quot;/&gt;&lt;content id=&quot;bcounter-null-obqTryFlushI-(format)&quot; val=&quot;4&quot;/&gt;&lt;content id=&quot;n-sduSOFHookI-(format)&quot; val=&quot;4&quot;/&gt;&lt;/contentList&gt;"/>
 <stringAttribute key="org.eclipse.cdt.launch.GLOBAL_VARIABLES" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;globalVariableList/&gt;&#13;&#10;"/>
 <stringAttribute key="org.eclipse.cdt.launch.MEMORY_BLOCKS" value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#13;&#10;&lt;memoryBlockExpressionList/&gt;&#13;&#10;"/>
 <stringAttribute key="org.eclipse.cdt.launch.PROGRAM_NAME" value="./build/ch.elf"/>
diff --git a/testhal/STM32/STM32F4xx/USB_CDC/main.c b/testhal/STM32/STM32F4xx/USB_CDC/main.c
index 37c0cfdc1..49c5a1b98 100644
--- a/testhal/STM32/STM32F4xx/USB_CDC/main.c
+++ b/testhal/STM32/STM32F4xx/USB_CDC/main.c
@@ -110,7 +110,15 @@ static void cmd_write(BaseSequentialStream *chp, int argc, char *argv[]) {
   }
 
   while (chnGetTimeout((BaseChannel *)chp, TIME_IMMEDIATE) == Q_TIMEOUT) {
+#if 1
+    /* Writing in stream mode.*/
     chSequentialStreamWrite(&SDU1, buf, sizeof buf - 1);
+#else
+    /* Writing in buffer mode.*/
+    (void) obqGetEmptyBufferTimeout(&SDU1.obqueue, TIME_INFINITE);
+    memcpy(SDU1.obqueue.ptr, buf, 256);
+    obqPostFullBuffer(&SDU1.obqueue, 256);
+#endif
   }
   chprintf(chp, "\r\n\nstopped\r\n");
 }