Merge branch 'xiongyihui-stm32f407'

Author: 0xc0170

README.md

@@ -43,6 +43,9 @@ NXP:
 * [DipCortex-M3](https://developer.mbed.org/platforms/DipCortex-M3/) (Cortex-M3)
 * [BlueBoard-LPC11U24](https://developer.mbed.org/platforms/BlueBoard-LPC11U24/) (Cortex-M0)
 * LPCCAPPUCCINO (Cortex-M0)
+* [Arch](https://developer.mbed.org/platforms/Seeeduino-Arch/) (Cortex-M0)
+* [Arch GPRS](https://developer.mbed.org/platforms/Seeed-Arch-GPRS/) (Cortex-M0)
+* [Arch Pro](https://developer.mbed.org/platforms/Seeeduino-Arch-Pro/) (Cortex-M3)
 
 Freescale:
 * [FRDM-KL05Z](https://developer.mbed.org/platforms/FRDM-KL05Z/) (Cortex-M0+)
@@ -69,11 +72,12 @@ STMicroelectronics:
 * STM32F3-Discovery (Cortex-M4F)
 * STM32F4-Discovery (Cortex-M4F)
 * STM32F429-Discovery (Cortex-M4F)
+* [Arch Max](https://developer.mbed.org/platforms/Seeed-Arch-Max/) (Cortex-M4F)
 
 
 Nordic:
 * [nRF51822-mKIT](https://developer.mbed.org/platforms/Nordic-nRF51822/) (Cortex-M0)
-
+* [Arch BLE](https://developer.mbed.org/platforms/Seeed-Arch-BLE/) (Cortex-M0)
 Supported Toolchains and IDEs
 -----------------------------
 * GCC ARM: [GNU Tools for ARM Embedded Processors](https://launchpad.net/gcc-arm-embedded/4.7/4.7-2012-q4-major)

libraries/mbed/targets/hal/TARGET_STM/TARGET_STM32F407VG/TARGET_ARCH_MAX/PinNames.h

@@ -243,13 +243,15 @@ typedef enum {
     D11         = PB_5,
     D12         = PB_4,
     D13         = PB_3,
+    D14         = PB_9,
+    D15         = PB_8,
 
     // Generic signals namings
     LED1        = PB_3,
     LED2        = PD_8,
     LED3        = PD_9,
     LED4        = PD_10,
-    USBTX       = PC_6,	/* USART2 */
+    USBTX       = PC_6,	/* USART6 */
     USBRX       = PC_7,
     I2C_SCL     = PB_8,	/* I2C1 */
     I2C_SDA     = PB_9,