board: stm32_min_dev: Add support for blue/black variant

Add support for blue pill and black pill variants of the STM32
minimum development board by splitting board configuration into
stm32_min_dev_blue and stm32_min_dev_black.

CODEOWNERS: Add myself (@cbsiddharth) as codeowner for stm32_min_dev

Signed-off-by: Siddharth Chandrasekaran <siddharth@embedjournal.com>

CODEOWNERS

@@ -80,6 +80,7 @@
 /boards/arm/stm32*_eval/                  @erwango
 /boards/nios2/                            @wentongwu
 /boards/nios2/altera_max10/               @wentongwu
+/boards/arm/stm32_min_dev/                @cbsiddharth
 /boards/posix/                            @aescolar
 /boards/riscv32/                          @kgugala @pgielda @nategraff-sifive
 /boards/shields/                          @erwango

boards/arm/stm32_min_dev/Kconfig.board

@@ -4,6 +4,11 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 #
-config BOARD_STM32_MIN_DEV
-	bool "STM32 Minimum Development Board"
+
+config BOARD_STM32_MIN_DEV_BLUE
+	bool "STM32 Minimum Development Board (Blue)"
+	depends on SOC_STM32F103X8
+
+config BOARD_STM32_MIN_DEV_BLACK
+	bool "STM32 Minimum Development Board (Black)"
 	depends on SOC_STM32F103X8

boards/arm/stm32_min_dev/Kconfig.defconfig

@@ -5,10 +5,11 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-if BOARD_STM32_MIN_DEV
+if BOARD_STM32_MIN_DEV_BLUE || BOARD_STM32_MIN_DEV_BLACK
 
 config BOARD
-	default "stm32_min_dev"
+	default "stm32_min_dev_blue" if BOARD_STM32_MIN_DEV_BLUE
+	default "stm32_min_dev_black" if BOARD_STM32_MIN_DEV_BLACK
 
 if UART_CONSOLE
 
@@ -41,4 +42,4 @@ config SPI_2
 
 endif # SPI
 
-endif # BOARD_STM32_MIN_DEV
+endif # BOARD_STM32_MIN_DEV_BLUE || BOARD_STM32_MIN_DEV_BLACK

boards/arm/stm32_min_dev/stm32_min_dev.dts → boards/arm/stm32_min_dev/stm32_min_dev.dtsi

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, embedjournal.com
+ * Copyright (c) 2019, embedjournal.com
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -9,7 +9,7 @@
 
 / {
 	model = "STM32 Minimum Development Board";
-	compatible = "st,stm32_min_dev", "st,stm32f103c8";
+	compatible = "st,stm32f103c8";
 
 	chosen {
 		zephyr,console = &usart1;
@@ -21,7 +21,7 @@
 	leds {
 		compatible = "gpio-leds";
 		led: led {
-			gpios = <&gpioc 13 GPIO_INT_ACTIVE_HIGH>;
+			gpios = <&gpiob 12 GPIO_INT_ACTIVE_HIGH>;
 			label = "LD";
 		};
 	};
@@ -70,7 +70,3 @@
 		status = "ok";
 	};
 };
-
-&usb {
-	status = "ok";
-};

boards/arm/stm32_min_dev/stm32_min_dev_black.dts

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2019, embedjournal.com
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include "stm32_min_dev.dtsi"
+
+/ {
+	model = "STM32 Minimum Development Board (Black)";
+	compatible = "st,stm32_min_dev_black", "st,stm32f103c8";
+
+	leds {
+		led: led {
+			gpios = <&gpiob 12 GPIO_INT_ACTIVE_HIGH>;
+		};
+	};
+};

boards/arm/stm32_min_dev/stm32_min_dev_black.yaml

@@ -0,0 +1,13 @@
+identifier: stm32_min_dev_black
+name: STM32 Minimum Development Board (Black)
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gnuarmemb
+  - xtools
+ram: 20
+supported:
+  - i2c
+  - pwm
+  - spi

boards/arm/stm32_min_dev/stm32_min_dev_black_defconfig

@@ -0,0 +1,44 @@
+# Kconfig - STM32 Minimum Development Board Configuration
+#
+# Copyright (c) 2019, embedjournal.com
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+CONFIG_ARM=y
+CONFIG_BOARD_STM32_MIN_DEV_BLACK=y
+CONFIG_SOC_SERIES_STM32F1X=y
+CONFIG_SOC_STM32F103X8=y
+CONFIG_CORTEX_M_SYSTICK=y
+
+# 72MHz system clock
+CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000
+
+# enable uart driver
+CONFIG_SERIAL=y
+
+# enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# enable pinmux
+CONFIG_PINMUX=y
+
+# enable GPIO
+CONFIG_GPIO=y
+
+# clock configuration
+CONFIG_CLOCK_CONTROL=y
+CONFIG_CLOCK_STM32_HSE_CLOCK=8000000
+CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
+
+# use HSE as PLL input
+CONFIG_CLOCK_STM32_PLL_SRC_HSE=y
+# produce 72MHz clock at PLL output
+CONFIG_CLOCK_STM32_PLL_XTPRE=n
+CONFIG_CLOCK_STM32_PLL_MULTIPLIER=9
+CONFIG_CLOCK_STM32_AHB_PRESCALER=1
+
+# APB1 clock must not exceed 36MHz limit
+CONFIG_CLOCK_STM32_APB1_PRESCALER=2
+CONFIG_CLOCK_STM32_APB2_PRESCALER=1

boards/arm/stm32_min_dev/stm32_min_dev_blue.dts

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2017, embedjournal.com
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include "stm32_min_dev.dtsi"
+
+/ {
+	model = "STM32 Minimum Development Board (Blue)";
+	compatible = "st,stm32_min_dev_blue", "st,stm32f103c8";
+
+	leds {
+		led: led {
+			gpios = <&gpioc 13 GPIO_INT_ACTIVE_HIGH>;
+		};
+	};
+};

boards/arm/stm32_min_dev/stm32_min_dev.yaml → boards/arm/stm32_min_dev/stm32_min_dev_blue.yaml

@@ -1,5 +1,5 @@
-identifier: stm32_min_dev
-name: STM32-MIN-DEV
+identifier: stm32_min_dev_blue
+name: STM32 Minimum Development Board (Blue)
 type: mcu
 arch: arm
 toolchain:

boards/arm/stm32_min_dev/stm32_min_dev_defconfig → boards/arm/stm32_min_dev/stm32_min_dev_blue_defconfig

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: Apache-2.0
 
 CONFIG_ARM=y
-CONFIG_BOARD_STM32_MIN_DEV=y
+CONFIG_BOARD_STM32_MIN_DEV_BLUE=y
 CONFIG_SOC_SERIES_STM32F1X=y
 CONFIG_SOC_STM32F103X8=y
 CONFIG_CORTEX_M_SYSTICK=y