[variant] Add support of board B-G431B-ESC1

Supersede stm32duino#1236

Signed-off-by: Owen Williams <williams.owen@gmail.com>
Co-authored-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>

README.md

@@ -128,6 +128,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :green_heart:  | STM32F407VG | [STM32F407G-DISC1](http://www.st.com/en/evaluation-tools/stm32f4discovery.html) | *0.1.0* |  |
 | :green_heart:  | STM32F746NG | [STM32F746G-DISCOVERY](http://www.st.com/en/evaluation-tools/32f746gdiscovery.html) | *0.1.0* |  |
 | :green_heart:  | STM32G031J6 | [STM32G0316-DISCO](https://www.st.com/en/evaluation-tools/stm32g0316-disco.html) | *1.9.0* |  |
+| :yellow_heart: | STM32G431CB | [B-G431B-ESC1](https://www.st.com/en/evaluation-tools/b-g431b-esc1.html) | **2.0.0** |  |
 | :green_heart:  | STM32L072CZ | [B-L072Z-LRWAN1](http://www.st.com/en/evaluation-tools/b-l072z-lrwan1.html) | *1.1.0* |  |
 | :green_heart:  | STM32L475VG | [B-L475E-IOT01A](http://www.st.com/en/evaluation-tools/b-l475e-iot01a.html) | *1.0.1* |  |
 | :green_heart:  | STM32F413ZH | [32F413HDISCOVERY](https://www.st.com/en/evaluation-tools/32f413hdiscovery.html) | *1.9.0* |  |
@@ -210,6 +211,8 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 
 | Status | Device(s) | Name | Release | Notes |
 | :----: | :-------: | ---- | :-----: | :---- |
+| :yellow_heart: | STM32G431C6U<br>STM32G431C8U<br>STM32G431CBU | Generic Board | **2.0.0** |  |
+| :yellow_heart: | STM32G441CBU | Generic Board | **2.0.0** |  |
 | :yellow_heart: | STM32G431K6<br>STM32G431K8<br>STM32G431KB | Generic Board | **2.0.0** |  |
 | :yellow_heart: | STM32G441KB | Generic Board | **2.0.0** |  |
 | :yellow_heart: | STM32G431R6<br>STM32G431R8<br>STM32G431RB | Generic Board | **2.0.0** |  |

boards.txt

@@ -678,6 +678,20 @@ Disco.menu.pnum.DISCO_G0316.build.variant=STM32G0xx/DISCO_G0316
 Disco.menu.pnum.DISCO_G0316.build.cmsis_lib_gcc=arm_cortexM0l_math
 Disco.menu.pnum.DISCO_G0316.build.extra_flags=-D{build.product_line} {build.xSerial} -D__CORTEX_SC=0
 
+# DISCO_B_G431B_ESC1 board
+Disco.menu.pnum.DISCO_B_G431B_ESC1=B-G431B-ESC1
+Disco.menu.pnum.DISCO_B_G431B_ESC1.node="NODE_G431CB,NOD_G431CB,DIS_G431CB"
+Disco.menu.pnum.DISCO_B_G431B_ESC1.upload.maximum_size=131072
+Disco.menu.pnum.DISCO_B_G431B_ESC1.upload.maximum_data_size=32768
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.mcu=cortex-m4
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.flags.fp=-mfpu=fpv4-sp-d16 -mfloat-abi=hard
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.board=DISCO_B_G431B_ESC1
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.series=STM32G4xx
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.product_line=STM32G431xx
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.variant=STM32G4xx/G431C(6-8-B)U_G441CBU
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.peripheral_pins=-DCUSTOM_PERIPHERAL_PINS
+Disco.menu.pnum.DISCO_B_G431B_ESC1.build.cmsis_lib_gcc=arm_cortexM4lf_math
+
 # B-L475E-IOT01A board
 Disco.menu.pnum.B_L475E_IOT01A=B-L475E-IOT01A
 Disco.menu.pnum.B_L475E_IOT01A.node=DIS_L4IOT
@@ -1679,6 +1693,30 @@ GenG4.build.flags.fp=-mfpu=fpv4-sp-d16 -mfloat-abi=hard
 GenG4.build.series=STM32G4xx
 GenG4.build.cmsis_lib_gcc=arm_cortexM4lf_math
 
+# Generic G431C6Ux
+GenG4.menu.pnum.GENERIC_G431C6UX=Generic G431C6Ux
+GenG4.menu.pnum.GENERIC_G431C6UX.upload.maximum_size=32768
+GenG4.menu.pnum.GENERIC_G431C6UX.upload.maximum_data_size=32768
+GenG4.menu.pnum.GENERIC_G431C6UX.build.board=GENERIC_G431C6UX
+GenG4.menu.pnum.GENERIC_G431C6UX.build.product_line=STM32G431xx
+GenG4.menu.pnum.GENERIC_G431C6UX.build.variant=STM32G4xx/G431C(6-8-B)U_G441CBU
+
+# Generic G431C8Ux
+GenG4.menu.pnum.GENERIC_G431C8UX=Generic G431C8Ux
+GenG4.menu.pnum.GENERIC_G431C8UX.upload.maximum_size=65536
+GenG4.menu.pnum.GENERIC_G431C8UX.upload.maximum_data_size=32768
+GenG4.menu.pnum.GENERIC_G431C8UX.build.board=GENERIC_G431C8UX
+GenG4.menu.pnum.GENERIC_G431C8UX.build.product_line=STM32G431xx
+GenG4.menu.pnum.GENERIC_G431C8UX.build.variant=STM32G4xx/G431C(6-8-B)U_G441CBU
+
+# Generic G431CBUx
+GenG4.menu.pnum.GENERIC_G431CBUX=Generic G431CBUx
+GenG4.menu.pnum.GENERIC_G431CBUX.upload.maximum_size=131072
+GenG4.menu.pnum.GENERIC_G431CBUX.upload.maximum_data_size=32768
+GenG4.menu.pnum.GENERIC_G431CBUX.build.board=GENERIC_G431CBUX
+GenG4.menu.pnum.GENERIC_G431CBUX.build.product_line=STM32G431xx
+GenG4.menu.pnum.GENERIC_G431CBUX.build.variant=STM32G4xx/G431C(6-8-B)U_G441CBU
+
 # Generic G431K6Tx
 GenG4.menu.pnum.GENERIC_G431K6TX=Generic G431K6Tx
 GenG4.menu.pnum.GENERIC_G431K6TX.upload.maximum_size=32768
@@ -1727,6 +1765,14 @@ GenG4.menu.pnum.GENERIC_G431KBUX.build.board=GENERIC_G431KBUX
 GenG4.menu.pnum.GENERIC_G431KBUX.build.product_line=STM32G431xx
 GenG4.menu.pnum.GENERIC_G431KBUX.build.variant=STM32G4xx/G431K(6-8-B)(T-U)_G441KB(T-U)
 
+# Generic G441CBUx
+GenG4.menu.pnum.GENERIC_G441CBUX=Generic G441CBUx
+GenG4.menu.pnum.GENERIC_G441CBUX.upload.maximum_size=131072
+GenG4.menu.pnum.GENERIC_G441CBUX.upload.maximum_data_size=32768
+GenG4.menu.pnum.GENERIC_G441CBUX.build.board=GENERIC_G441CBUX
+GenG4.menu.pnum.GENERIC_G441CBUX.build.product_line=STM32G441xx
+GenG4.menu.pnum.GENERIC_G441CBUX.build.variant=STM32G4xx/G431C(6-8-B)U_G441CBU
+
 # Generic G441KBTx
 GenG4.menu.pnum.GENERIC_G441KBTX=Generic G441KBTx
 GenG4.menu.pnum.GENERIC_G441KBTX.upload.maximum_size=131072