add iccarm support for cm3

1. IAR project, see TencentOS-tiny\board\STM32F103_SIM800A\iar

board/STM32F103_SIM800A/keil/Inc/mcu_init.h

@@ -0,0 +1,33 @@
+#ifndef __MCU_INIT_H_
+#define __MCU_INIT_H_
+
+#include "stdlib.h"
+#include "string.h"
+#include "stdio.h"
+#include "stdint.h"
+#include "main.h"
+#include "stm32f1xx_hal.h"
+#include "stm32f1xx_it.h"
+#include "usart.h"
+#include "gpio.h"
+#include "adc.h"
+#include "hal_spi_flash.h"
+#include "usb.h"
+
+#include "cmsis_os.h"
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+void board_init(void);
+void SystemClock_Config(void);
+void sim800a_power_on(void);
+void _Error_Handler(char *, int);
+
+#define Error_Handler() _Error_Handler(__FILE__, __LINE__)
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MCU_INIT_H_ */