Add Blue Pill support.

AUTHORS

@@ -42,6 +42,10 @@ NIIBE Yutaka:
 
 	board-fs-bb48.h
 
+Paul Fertser:
+    Added Blue Pill support.
+	board/board-blue-pill.h
+
 Szczepan Zalega:
     Modified Nitrokey-Start support.
 	board/board-nitrokey-start.h

ChangeLog

@@ -1,3 +1,7 @@
+2017-02-01  Paul Fertser <fercerpav@gmail.com>
+
+	* board/board-blue-pill.h: New.
+
 2016-12-08  Szczepan Zalega <szczepan@nitrokey.com>
 
 	* board/board-nitrokey-start.h (VAL_GPIO_USB_ODR): Switch off red

board/board-blue-pill.h

@@ -0,0 +1,36 @@
+#define BOARD_NAME "Blue Pill"
+/* http://wiki.stm32duino.com/index.php?title=Blue_Pill */
+/* echo -n "Blue Pill" | shasum -a 256 | sed -e 's/^.*\(........\)  -$/\1/' */
+#define BOARD_ID    0xa1099d43
+
+#define STM32F10X_MD		/* Medium-density device */
+
+#define STM32_PLLXTPRE                  STM32_PLLXTPRE_DIV1
+#define STM32_PLLMUL_VALUE              9
+#define STM32_HSECLK                    8000000
+
+#define GPIO_LED_BASE   GPIOC_BASE
+#define GPIO_LED_CLEAR_TO_EMIT          13
+#define GPIO_USB_BASE   GPIOA_BASE
+#define GPIO_USB_SET_TO_ENABLE          12
+#undef  GPIO_OTHER_BASE
+
+/*
+ * Port A setup.
+ * PA11 - Push Pull output 10MHz 0 default (until USB enabled) (USBDM)
+ * PA12 - Push Pull output 10MHz 0 default (until USB enabled) (USBDP)
+ * PC13 - Push pull output 50MHz (LED 1:ON 0:OFF)
+ * ------------------------ Default
+ * PAx  - input with pull-up
+ * PCx  - input with pull-up
+ */
+#define VAL_GPIO_USB_ODR            0xFFFFE7FF
+#define VAL_GPIO_USB_CRL            0x88888888      /*  PA7...PA0 */
+#define VAL_GPIO_USB_CRH            0x88811888      /* PA15...PA8 */
+
+#define VAL_GPIO_LED_ODR            0xFFFFFFFF
+#define VAL_GPIO_LED_CRL            0x88888888      /*  PC7...PC0 */
+#define VAL_GPIO_LED_CRH            0x88388888      /* PC15...PC8 */
+
+#define RCC_ENR_IOP_EN      (RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPCEN)
+#define RCC_RSTR_IOP_RST    (RCC_APB2RSTR_IOPARST | RCC_APB2RSTR_IOPCRST)