11.22：完善注释；提高代码的移植性；完善串口程序。

STM32/Gateway_Node/System/USART2.h

@@ -0,0 +1,35 @@
+#ifndef __USART2_H__
+#define __USART2_H__
+
+#define USE_NONE_SYSTEM                                         0
+#define USE_FREERTOS                                            1
+#define USE_OSAL                                                0
+#define vEsp8266IrqHandler                                      USART2_IRQHandler
+#define USART2_GPIO_PIN_TX                                      GPIO_Pin_2
+#define USART2_GPIO_PIN_RX                                      GPIO_Pin_3
+
+#if (USE_NONE_SYSTEM == 1)
+#elif (USE_FREERTOS == 1)
+    #include "FreeRTOS.h"
+    #include "queue.h"
+#elif (USE_OSAL == 1)
+#endif
+
+#include "stm32f10x.h"                  // Device header
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+
+#if (USE_NONE_SYSTEM == 1)
+#elif (USE_FREERTOS == 1)
+    extern QueueHandle_t xQueueUsart2IrqHdlr;
+#elif (USE_OSAL == 1)
+#endif
+
+void vUsart2Init(uint32_t ulUsart2Baudrate);
+void vUsart2SendByte(uint8_t ucByte);
+void vUsart2SendArray(uint8_t *pucArray, uint16_t usLength);
+void vUsart2SendString(char *pcString);
+void vUsart2Printf(char *format, ...);
+
+#endif