diff --git a/usersrc/usermain.c b/usersrc/usermain.c
index 8c70a50..3a9c41e 100644
--- a/usersrc/usermain.c
+++ b/usersrc/usermain.c
@@ -78,8 +78,8 @@ uint8_t SPI_ReadWriteByte(uint8_t txData)
     sys_delay_us(1);
   }
 
-  SPI_MOSI_1(); // 数据线空闲高电平
   SPI_SCK_1();
+  SPI_MOSI_1(); // 数据线空闲高电平
   sys_delay_us(1); // symbol thi
   sys_delay_us(1); // symbol tsw
   SPI_CS_1();