change something

Makefile

@@ -100,7 +100,7 @@ qemu: build
 
 image = $T/kernel.bin
 k210 = $T/k210.bin
-k210-serialport := /dev/ttyUSB1
+k210-serialport := /dev/ttyUSB0
 
 k210: build
 	@riscv64-unknown-elf-objcopy $T/kernel --strip-all -O binary $(image)

README.md

@@ -14,7 +14,7 @@ First you need to connect your k210 board to your PC.
 And check the USB port:  
 >\$ ls /dev/ | grep USB  
 
-In my situation it will be `ttyUSB1`  
+In my situation it will be `ttyUSB0`  
 
 >\$ cd xv6-k210  
 >\$ mkdir target  
@@ -33,8 +33,8 @@ may help you: [maixpy-doc](https://maixpy.sipeed.com/zh/get_started/env_install_
 + Page Table
 + Timer interrupt
 + S mode extern interrupt
-+ receive uarths message
-+ read and write data in sd card
++ Receive uarths message
++ Read and write data in sd card
 
 ## What I'm doing
 Try to port file system.  

kernel/main.c

@@ -52,12 +52,12 @@ main(unsigned long hartid, unsigned long dtb_pa)
     __sync_synchronize();
     started = 1;
 
-    // scheduler();
+    scheduler();
 
   } else
   {
     // hart 1
-    printf("hart %d enter main()...\n", hartid);
+    // printf("hart %d enter main()...\n", hartid);
   }
   
   while (1) {