update template

Src/syscalls.c

@@ -162,10 +162,10 @@ int _execve(char *name, char **argv, char **env)
 	return -1;
 }
 
-// USART0 printf重定向实现
+// UART printf重定向实现
 int __io_putchar(int ch) {
     // 等待发送缓冲区空
-    while (usart_flag_get(RS485_PHY, USART_FLAG_TBE) == RESET) {}
-    usart_data_transmit(RS485_PHY, (uint8_t)ch);
+    while (usart_flag_get(DEBUG_UART, USART_FLAG_TBE) == RESET) {}
+    usart_data_transmit(DEBUG_UART, (uint8_t)ch);
     return ch;
 }