diff --git a/app/include/driver/uart.h b/app/include/driver/uart.h
index c2c8001d..3dd3df6b 100644
--- a/app/include/driver/uart.h
+++ b/app/include/driver/uart.h
@@ -33,6 +33,9 @@ typedef enum {
 } UartExistParity;
 
 typedef enum {
+    BIT_RATE_9600     = 1200,
+    BIT_RATE_9600     = 2400,
+    BIT_RATE_4800     = 4800,  
     BIT_RATE_9600     = 9600,
     BIT_RATE_19200   = 19200,
     BIT_RATE_38400   = 38400,
diff --git a/app/platform/platform.c b/app/platform/platform.c
index 8480a3bb..3c247c4b 100644
--- a/app/platform/platform.c
+++ b/app/platform/platform.c
@@ -185,6 +185,9 @@ uint32_t platform_uart_setup( unsigned id, uint32_t baud, int databits, int pari
 {
   switch( baud )
   {
+    case BIT_RATE_1200:
+    case BIT_RATE_2400:
+    case BIT_RATE_4800:
     case BIT_RATE_9600:
     case BIT_RATE_19200:
     case BIT_RATE_38400: