Set RPMSG header size

kbumsik · kbumsik · commit fa932ad255ac · 2020-02-28T12:42:56.000+09:00
diff --git a/cores/arduino/VirtIOSerial.cpp b/cores/arduino/VirtIOSerial.cpp
@@ -92,7 +92,7 @@ int VirtIOSerial::availableForWrite()
 {
   // Just return max length of VIRT_UART_Transmit() can transmit.
   // See VIRT_UART_Transmit().
-  return RPMSG_BUFFER_SIZE - 16;
+  return RPMSG_BUFFER_SIZE - RPMSG_VRING_HEADER_SIZE;
 }
 
 int VirtIOSerial::peek(void)
diff --git a/cores/arduino/stm32/OpenAMP/virtio_config.h b/cores/arduino/stm32/OpenAMP/virtio_config.h
@@ -7,4 +7,7 @@
 #define RPMSG_BUFFER_SIZE (512)
 #endif
 
+// Size of the vqueue message in the buffer
+#define RPMSG_VRING_HEADER_SIZE 16
+
 #endif // __VIRTIO_CONFIG_H

Original file line number	Diff line number	Diff line change
`@@ -92,7 +92,7 @@ int VirtIOSerial::availableForWrite()`
`92`	`92`	`{`
`93`	`93`	`// Just return max length of VIRT_UART_Transmit() can transmit.`
`94`	`94`	`// See VIRT_UART_Transmit().`
`95`		`- return RPMSG_BUFFER_SIZE - 16;`
	`95`	`+ return RPMSG_BUFFER_SIZE - RPMSG_VRING_HEADER_SIZE;`
`96`	`96`	`}`
`97`	`97`
`98`	`98`	`int VirtIOSerial::peek(void)`