refactor(VirtIO): move VirtIOSerial as a built-in library

Including OpenAMP.

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

License.md

@@ -56,11 +56,11 @@ target_include_directories(base_config INTERFACE
 	"${BUILD_CORE_PATH}/avr"
 	"${BUILD_CORE_PATH}/stm32"
 	"${BUILD_CORE_PATH}/stm32/usb"
-	"${BUILD_CORE_PATH}/stm32/OpenAMP"
 	"${BUILD_CORE_PATH}/stm32/usb/hid"
 	"${BUILD_CORE_PATH}/stm32/usb/cdc"
 	"${BUILD_LIB_PATH}/SrcWrapper/inc"
 	"${BUILD_LIB_PATH}/SrcWrapper/inc/LL"
+	"${BUILD_LIB_PATH}/VirtIO/inc"
 	"${BUILD_SYSTEM_PATH}/Middlewares/ST/STM32_USB_Device_Library/Core/Inc"
 	"${BUILD_SYSTEM_PATH}/Middlewares/ST/STM32_USB_Device_Library/Core/Src"
 	"${CMSIS5_PATH}/CMSIS/DSP/Include"

cmake/set_base_arduino_config.cmake

@@ -91,6 +91,7 @@ build_sketch(TARGET "{{tgtname or "@binary_name_here@"}}"
   # SD
   # Wire
   # SPI
+  # VirtIO
 )
 
 # STEP 4: optional features

cmake/templates/easy_cmake.cmake

@@ -31,29 +31,6 @@ add_library(core_bin STATIC EXCLUDE_FROM_ALL
   pins_arduino.c
   Print.cpp
   RingBuffer.cpp
-  stm32/OpenAMP/libmetal/device.c
-  stm32/OpenAMP/libmetal/generic/condition.c
-  stm32/OpenAMP/libmetal/generic/cortexm/sys.c
-  stm32/OpenAMP/libmetal/generic/generic_device.c
-  stm32/OpenAMP/libmetal/generic/generic_init.c
-  stm32/OpenAMP/libmetal/generic/generic_io.c
-  stm32/OpenAMP/libmetal/generic/generic_shmem.c
-  stm32/OpenAMP/libmetal/generic/time.c
-  stm32/OpenAMP/libmetal/init.c
-  stm32/OpenAMP/libmetal/io.c
-  stm32/OpenAMP/libmetal/log.c
-  stm32/OpenAMP/libmetal/shmem.c
-  stm32/OpenAMP/mbox_ipcc.c
-  stm32/OpenAMP/open-amp/remoteproc/remoteproc_virtio.c
-  stm32/OpenAMP/open-amp/rpmsg/rpmsg.c
-  stm32/OpenAMP/open-amp/rpmsg/rpmsg_virtio.c
-  stm32/OpenAMP/openamp.c
-  stm32/OpenAMP/rsc_table.c
-  stm32/OpenAMP/virt_uart.c
-  stm32/OpenAMP/virtio/virtio.c
-  stm32/OpenAMP/virtio/virtqueue.c
-  stm32/OpenAMP/virtio_buffer.c
-  stm32/OpenAMP/virtio_log.c
   stm32/startup_stm32yyxx.S
   stm32/usb/cdc/cdc_queue.c
   stm32/usb/cdc/usbd_cdc.c
@@ -70,7 +47,6 @@ add_library(core_bin STATIC EXCLUDE_FROM_ALL
   Stream.cpp
   Tone.cpp
   USBSerial.cpp
-  VirtIOSerial.cpp
   WInterrupts.cpp
   wiring_analog.c
   wiring_digital.c

cores/arduino/CMakeLists.txt

@@ -4,7 +4,9 @@
 #include "variant.h"
 #include "HardwareSerial.h"
 #include "USBSerial.h"
-#include "VirtIOSerial.h"
+#if defined(VIRTIOCON)
+  #include "VirtIOSerial.h"
+#endif /* VIRTIOCON */
 
 #if defined (USBCON) && defined(USBD_USE_CDC)
   #ifndef DISABLE_GENERIC_SERIALUSB

cores/arduino/WSerial.h

@@ -10,4 +10,5 @@ add_subdirectory(SPI)
 add_subdirectory(Servo)
 add_subdirectory(SoftwareSerial)
 add_subdirectory(SrcWrapper)
+add_subdirectory(VirtIO)
 add_subdirectory(Wire)

libraries/CMakeLists.txt

@@ -0,0 +1,53 @@
+# v3.21 implemented semantic changes regarding $<TARGET_OBJECTS:...>
+# See https://cmake.org/cmake/help/v3.21/command/target_link_libraries.html#linking-object-libraries-via-target-objects
+cmake_minimum_required(VERSION 3.21)
+
+add_library(VirtIO INTERFACE)
+add_library(VirtIO_usage INTERFACE)
+
+target_include_directories(VirtIO_usage INTERFACE
+  src
+)
+
+
+target_link_libraries(VirtIO_usage INTERFACE
+  base_config
+)
+
+target_link_libraries(VirtIO INTERFACE VirtIO_usage)
+
+
+
+add_library(VirtIO_bin OBJECT EXCLUDE_FROM_ALL
+  src/libmetal/device.c
+  src/libmetal/generic/condition.c
+  src/libmetal/generic/cortexm/sys.c
+  src/libmetal/generic/generic_device.c
+  src/libmetal/generic/generic_init.c
+  src/libmetal/generic/generic_io.c
+  src/libmetal/generic/generic_shmem.c
+  src/libmetal/generic/time.c
+  src/libmetal/init.c
+  src/libmetal/io.c
+  src/libmetal/log.c
+  src/libmetal/shmem.c
+  src/mbox_ipcc.c
+  src/open-amp/remoteproc/remoteproc_virtio.c
+  src/open-amp/rpmsg/rpmsg.c
+  src/open-amp/rpmsg/rpmsg_virtio.c
+  src/openamp.c
+  src/rsc_table.c
+  src/virt_uart.c
+  src/virtio/virtio.c
+  src/virtio/virtqueue.c
+  src/virtio_buffer.c
+  src/virtio_log.c
+  src/VirtIOSerial.cpp
+)
+target_link_libraries(VirtIO_bin PUBLIC VirtIO_usage)
+
+target_link_libraries(VirtIO INTERFACE
+  VirtIO_bin
+  $<TARGET_OBJECTS:VirtIO_bin>
+)
+

libraries/VirtIO/CMakeLists.txt

@@ -0,0 +1,25 @@
+int available;
+char buffer[1024];
+
+unsigned long start_time = 0;
+
+void setup() {
+  Serial.begin(115200);
+  pinMode(LED_BUILTIN, OUTPUT);
+}
+
+void loop() {
+  available = Serial.available();
+  while (available > 0) {
+    int size = min(available, Serial.availableForWrite());
+    Serial.readBytes(buffer, size);
+    Serial.write(buffer, size);
+    available -= size;
+  }
+
+  // Heartbeat. If Arduino stops the LED won't flash anymore.
+  if ((millis() - start_time) > 1000) {
+    start_time = millis();
+    digitalWrite(LED_BUILTIN, !digitalRead(LED_BUILTIN));
+  }
+}