variant(f3): add Nucleo-F334R8 support

Signed-off-by: Aymane Bahssain <aymane.bahssain@st.com>

Author: Aymane-ST

README.md

@@ -139,6 +139,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :green_heart:  | STM32F103RB | [Nucleo F103RB](http://www.st.com/en/evaluation-tools/nucleo-f103rb.html) | *0.2.0* |  |
 | :green_heart:  | STM32F302R8 | [Nucleo F302R8](http://www.st.com/en/evaluation-tools/nucleo-f302r8.html) | *1.1.0* |  |
 | :green_heart:  | STM32F303RE | [Nucleo F303RE](http://www.st.com/en/evaluation-tools/nucleo-f303re.html) | *0.1.0* |  |
+| :yellow_heart: | STM32F334R8 | [Nucleo-F334R8](https://www.st.com/en/evaluation-tools/nucleo-f334r8.html) | **2.12.0** |  |
 | :green_heart:  | STM32F401RE | [Nucleo F401RE](http://www.st.com/en/evaluation-tools/nucleo-f401re.html) | *0.2.1* |  |
 | :green_heart:  | STM32F410RB | [Nucleo F410RB](http://www.st.com/en/evaluation-tools/nucleo-f410rb.html) | *2.11.0* |  |
 | :green_heart:  | STM32F411RE | [Nucleo F411RE](http://www.st.com/en/evaluation-tools/nucleo-f411re.html) | *0.2.1* |  |

boards.txt

@@ -601,6 +601,21 @@ Nucleo_64.menu.pnum.NUCLEO_F303RE.build.variant=STM32F3xx/F303R(D-E)T
 Nucleo_64.menu.pnum.NUCLEO_F303RE.openocd.target=stm32f3x
 Nucleo_64.menu.pnum.NUCLEO_F303RE.debug.svd_file={runtime.tools.STM32_SVD.path}/svd/STM32F3xx/STM32F303.svd
 
+# NUCLEO_F334R8 board
+Nucleo_64.menu.pnum.NUCLEO_F334R8=Nucleo F334R8
+Nucleo_64.menu.pnum.NUCLEO_F334R8.node=NODE_F334R8
+Nucleo_64.menu.pnum.NUCLEO_F334R8.upload.maximum_size=65536
+Nucleo_64.menu.pnum.NUCLEO_F334R8.upload.maximum_data_size=12288
+Nucleo_64.menu.pnum.NUCLEO_F334R8.build.mcu=cortex-m4
+Nucleo_64.menu.pnum.NUCLEO_F334R8.build.fpu=-mfpu=fpv4-sp-d16
+Nucleo_64.menu.pnum.NUCLEO_F334R8.build.float-abi=-mfloat-abi=hard
+Nucleo_64.menu.pnum.NUCLEO_F334R8.build.board=NUCLEO_F334R8
+Nucleo_64.menu.pnum.NUCLEO_F334R8.build.series=STM32F3xx
+Nucleo_64.menu.pnum.NUCLEO_F334R8.build.product_line=STM32F334x8
+Nucleo_64.menu.pnum.NUCLEO_F334R8.build.variant=STM32F3xx/F303R(6-8)T_F334R(6-8)T
+Nucleo_64.menu.pnum.NUCLEO_F334R8.openocd.target=stm32f3x
+Nucleo_64.menu.pnum.NUCLEO_F334R8.debug.svd_file={runtime.tools.STM32_SVD.path}/svd/STM32F3xx/STM32F334.svd
+
 # NUCLEO_F401RE board
 Nucleo_64.menu.pnum.NUCLEO_F401RE=Nucleo F401RE
 Nucleo_64.menu.pnum.NUCLEO_F401RE.node="NODE_F401RE,NUCLEO"