添加一些关于midi播放的项目

Midi/music-box-stm32f1-master/user/Hal/uart_log.h

@@ -0,0 +1,21 @@
+//
+// Created by YangYongbao on 2017/3/18.
+//
+
+#ifndef STM32F10X_MAKEFILE_FREERTOS_UART_LOG_H
+#define STM32F10X_MAKEFILE_FREERTOS_UART_LOG_H
+
+#include <stdarg.h>
+#include <stdio.h>
+
+
+void uart_log_init(void);
+void uart_putchar(unsigned int c);
+int uart_getchar(void);
+#ifdef USE_CUSTOM_PRINTF
+void debug(const char *format, ...);
+#else
+#define debug(f_, ...) printf((f_), ##__VA_ARGS__)
+#endif
+
+#endif //STM32F10X_MAKEFILE_FREERTOS_UART_LOG_H