diff --git a/package/STM32F1/STM32F1_ADC.c b/package/STM32F1/STM32F1_ADC.c
index 0fa81c775..e7d69ea91 100644
--- a/package/STM32F1/STM32F1_ADC.c
+++ b/package/STM32F1/STM32F1_ADC.c
@@ -144,4 +144,4 @@ exit:
 void STM32F1_ADC_platformRead(PikaObj* self) {
     char *pin = obj_getStr(self, "pin");
     obj_setFloat(self, "val", 3.3f * Get_Adc(&pika_hadc1, getChannel(pin)) / 4096.0f);
-}
\ No newline at end of file
+}
diff --git a/package/STM32F1/STM32F1_GPIO.c b/package/STM32F1/STM32F1_GPIO.c
index 48833fc6e..3ff63c969 100644
--- a/package/STM32F1/STM32F1_GPIO.c
+++ b/package/STM32F1/STM32F1_GPIO.c
@@ -168,4 +168,4 @@ int STM32F1_lowLevel_readPin(PikaObj *self, char * pin){
         obj_setSysOut(self, "[error] not match gpio pin.");
     }
     return HAL_GPIO_ReadPin(gpioPort,gpioPin);
-}
\ No newline at end of file
+}
diff --git a/package/STM32F1/STM32F1_IIC.c b/package/STM32F1/STM32F1_IIC.c
index 5cf02e349..a845c773c 100644
--- a/package/STM32F1/STM32F1_IIC.c
+++ b/package/STM32F1/STM32F1_IIC.c
@@ -57,7 +57,7 @@ uint8_t READ_SDA(pika_IIC_info* iic) {
 }
 
 void WRITE_SDA(pika_IIC_info* iic, uint8_t data) {
-    HAL_GPIO_WritePin(iic->SDA_GPIO, iic->SDA_GPIO_Pin, data);
+    HAL_GPIO_WritePin(iic->SDA_GPIO, iic->SDA_GPIO_Pin, (GPIO_PinState) data);
 }
 
 void IIC_Start(pika_IIC_info* iic) {
@@ -253,4 +253,4 @@ void STM32F1_IIC_platformWrite(PikaObj* self) {
     pika_IIC_info* iic = obj_getPtr(self, "iic");
 
     MPU_Write_Len(iic, iic->deviceAddr, addr, strGetSize(data), (uint8_t*)data);
-}
\ No newline at end of file
+}
diff --git a/package/STM32F1/STM32F1_PWM.c b/package/STM32F1/STM32F1_PWM.c
index 8d4bddf7f..81911e39c 100644
--- a/package/STM32F1/STM32F1_PWM.c
+++ b/package/STM32F1/STM32F1_PWM.c
@@ -320,4 +320,4 @@ void STM32F1_PWM_platformSetFrequency(PikaObj* self) {
         __HAL_TIM_SET_COMPARE(pika_tim, getTimChennel(pin),
                               (uint32_t)(pika_tim->Init.Period * duty));
     }
-}
\ No newline at end of file
+}
diff --git a/package/STM32F1/STM32F1_Time.c b/package/STM32F1/STM32F1_Time.c
index 62baea8c6..41250afec 100644
--- a/package/STM32F1/STM32F1_Time.c
+++ b/package/STM32F1/STM32F1_Time.c
@@ -10,4 +10,4 @@ void STM32F1_Time_sleep_s(PikaObj* self, int s) {
     for (int i = 0; i < s; i++) {
         HAL_Delay(1000);
     }
-}
\ No newline at end of file
+}
diff --git a/package/STM32F1/STM32F1_UART.c b/package/STM32F1/STM32F1_UART.c
index 7cf78c630..211571931 100644
--- a/package/STM32F1/STM32F1_UART.c
+++ b/package/STM32F1/STM32F1_UART.c
@@ -50,14 +50,6 @@ static void setUartObj(uint8_t id, PikaObj* obj) {
     pika_uart->obj = obj;
 }
 
-static PikaObj* getUartObj(uint8_t id) {
-    pika_uart_t* pika_uart = getPikaUart(id);
-    if (NULL == pika_uart) {
-        return NULL;
-    }
-    return pika_uart->obj;
-}
-
 static USART_TypeDef* getUartInstance(uint8_t id) {
 #ifdef UART1_EXIST
     if (1 == id) {
@@ -310,7 +302,6 @@ void STM32F1_UART_platformRead(PikaObj* self) {
     UART_Start_Receive_IT(
         &pika_uart->huart,
         (uint8_t*)(pika_uart->rxBuff + pika_uart->rxBuffOffset), 1);
-exit:
     args_deinit(buffs);
     obj_setStr(self,"readData", readBuff);
 }
diff --git a/package/STM32F1/STM32F1_common.c b/package/STM32F1/STM32F1_common.c
index d6fc77378..613a1acc1 100644
--- a/package/STM32F1/STM32F1_common.c
+++ b/package/STM32F1/STM32F1_common.c
@@ -165,4 +165,4 @@ uint8_t enableClk(char* pin) {
         return 0;
     }
     return 1;
-}
\ No newline at end of file
+}
diff --git a/package/STM32F1/STM32F1_common.h b/package/STM32F1/STM32F1_common.h
index 3332806de..7e129766d 100644
--- a/package/STM32F1/STM32F1_common.h
+++ b/package/STM32F1/STM32F1_common.h
@@ -86,7 +86,7 @@ void delay_us(uint32_t delay);
 void delay_unit(uint32_t delay);
 void STM32_UART_clearRxBuff(pika_uart_t* pika_uart);
 uint8_t STM32_Code_reciveHandler(char *data, uint32_t rxSize);
-void STM32_Code_Init();
-void STM32_Code_flashHandler();
-void HARDWARE_PRINTF_Init();
-#endif
\ No newline at end of file
+void STM32_Code_Init(void);
+void STM32_Code_flashHandler(void);
+void HARDWARE_PRINTF_Init(void);
+#endif