Increase baud rate to 115200

Author: LDong-Arm

README.md

@@ -46,10 +46,10 @@ Second run:
 1. Run this command to build the example project and program the microcontroller flash memory:
 
     ```bash
-    $ mbed compile -m <TARGET> -t <TOOLCHAIN> --flash --sterm
+    $ mbed compile -m <TARGET> -t <TOOLCHAIN> --flash
     ```
 
-(Note: You can use the Mbed CLI command-line option "--sterm" to open a serial terminal after flashing.)
+(Note: You can use the Mbed CLI command-line option "--sterm --baudrate 115200" to open a serial terminal after flashing.)
 
 Your PC may take a few minutes to compile your code.
 

mbed_app.json

@@ -1,7 +1,8 @@
 {
     "target_overrides": {
         "*": {
-            "platform.stdio-convert-newlines": 1
+            "platform.stdio-convert-newlines": 1,
+            "platform.stdio-baud-rate": 115200
         }
     }
 }