diff --git a/buildroot-2021.05/package/wiringx/src/libwiringx.so b/buildroot-2021.05/package/wiringx/src/libwiringx.so
index fb2fd48b8..658d49e5a 100644
Binary files a/buildroot-2021.05/package/wiringx/src/libwiringx.so and b/buildroot-2021.05/package/wiringx/src/libwiringx.so differ
diff --git a/buildroot-2021.05/package/wiringx/src/wiringx.h b/buildroot-2021.05/package/wiringx/src/wiringx.h
index 646ca8052..5e5e27685 100644
--- a/buildroot-2021.05/package/wiringx/src/wiringx.h
+++ b/buildroot-2021.05/package/wiringx/src/wiringx.h
@@ -66,42 +66,52 @@ typedef struct wiringXSerial_t {
 	unsigned int flowcontrol;
 } wiringXSerial_t;
 
-void delayMicroseconds(unsigned int);
-int pinMode(int, enum pinmode_t);
+
 int wiringXSetup(char *name, void (*func)(int, char *, int, const char *, ...));
 int wiringXGC(void);
 
-// int analogRead(int channel);
-int digitalWrite(int, enum digital_value_t);
-int digitalRead(int);
-int waitForInterrupt(int, int);
-int wiringXISR(int, enum isr_mode_t);
+void delayMicroseconds(unsigned int howLong);
 
-int wiringXI2CRead(int);
-int wiringXI2CReadReg8(int, int);
-int wiringXI2CReadReg16(int, int);
-int wiringXI2CWrite(int, int);
-int wiringXI2CWriteReg8(int, int, int);
-int wiringXI2CWriteReg16(int, int, int);
-int wiringXI2CSetup(const char *, int);
+int wiringXValidGPIO(int pin);
+
+int pinMode(int pin, enum pinmode_t mode);
+int digitalWrite(int pin, enum digital_value_t value);
+int digitalRead(int pin);
+
+int waitForInterrupt(int pin, int ms);
+int wiringXISR(int pin, enum isr_mode_t mode);
+
+// int analogRead(int channel);
+
+int wiringXI2CRead(int fd);
+int wiringXI2CReadReg8(int fd, int reg);
+int wiringXI2CReadReg16(int fd, int reg);
+int wiringXI2CWrite(int fd, int data);
+int wiringXI2CWriteReg8(int fd, int reg, int data);
+int wiringXI2CWriteReg16(int fd, int reg, int data);
+int wiringXI2CSetup(const char *path, int addr);
 
 int wiringXSPIGetFd(int channel);
 int wiringXSPIDataRW(int channel, unsigned char *data, int len);
 int wiringXSPISetup(int channel, int speed);
 
-int wiringXSerialOpen(const char *, struct wiringXSerial_t);
-void wiringXSerialFlush(int);
-void wiringXSerialClose(int);
-void wiringXSerialPutChar(int, unsigned char);
-void wiringXSerialPuts(int, const char *);
-void wiringXSerialPrintf(int, const char *, ...);
-int wiringXSerialDataAvail(int);
-int wiringXSerialGetChar(int);
+int wiringXSerialOpen(const char *device, struct wiringXSerial_t serial);
+void wiringXSerialFlush(int fd);
+void wiringXSerialClose(int fd);
+void wiringXSerialPutChar(int fd, unsigned char c);
+void wiringXSerialPuts(int fd, const char *s);
+void wiringXSerialPrintf(int fd, const char *message, ...);
+int wiringXSerialDataAvail(int fd);
+int wiringXSerialGetChar(int fd);
+
+int wiringXSetPWMPeriod(int pin, long period);
+int wiringXSetPWMPolarity(int pin, int polarity);
+int wiringXSetPWMDuty(int pin, int duty_cycle);
+int wiringXPWMEnable(int pin, int enable);
 
 char *wiringXPlatform(void);
-int wiringXValidGPIO(int);
-int wiringXSelectableFd(int);
-int wiringXSupportedPlatforms(char ***);
+int wiringXSelectableFd(int gpio);
+int wiringXSupportedPlatforms(char ***out);
 
 #ifdef __cplusplus
 }
diff --git a/buildroot-2021.05/package/wiringx/wiringx.mk b/buildroot-2021.05/package/wiringx/wiringx.mk
index a8bb38ba5..7af04fd66 100644
--- a/buildroot-2021.05/package/wiringx/wiringx.mk
+++ b/buildroot-2021.05/package/wiringx/wiringx.mk
@@ -10,7 +10,6 @@ define WIRINGX_INSTALL_STAGING_CMDS
 endef
 
 define WIRINGX_INSTALL_TARGET_CMDS
-	$(INSTALL) -D -m 0644 $(@D)/src/wiringx.h $(TARGET_DIR)/usr/include/
 	$(INSTALL) -D -m 0644 $(@D)/src/libwiringx.so $(TARGET_DIR)/usr/lib/
 endef