diff --git a/build b/build
index f3519e5..442537a 100755
--- a/build
+++ b/build
@@ -49,7 +49,7 @@ select_boards()
     local choice
     local call=${1}
 
-    boards=("OrangePi_PC2" "OrangePi_A64" "OrangePi_ZERO" "OrangePi_H3" "OrangePi_LITE2" "OrangePi_H3_ZEROPLUS2" "OrangePi_3" "OrangePi_RK3399" "OrangePi_ONEPLUS" "OrangePi_4")
+    boards=("OrangePi_PC2" "OrangePi_A64" "OrangePi_ZERO" "OrangePi_H3" "OrangePi_LITE2" "OrangePi_H3_ZEROPLUS2" "OrangePi_3" "OrangePi_RK3399" "OrangePi_ONEPLUS" "OrangePi_4" "OrangePi_4B")
 
     printf "All available boards:\n"
     for var in ${boards[@]} ; do
diff --git a/examples/Makefile b/examples/Makefile
index 97ee0ee..0da8f35 100644
--- a/examples/Makefile
+++ b/examples/Makefile
@@ -26,8 +26,8 @@ ifneq ($V,1)
 Q ?= @
 endif
 
-#DEBUG	= -g -O0
-DEBUG	= -O3
+DEBUG	= -g -O0
+#DEBUG	= -O3
 CC	= gcc
 INCLUDE	= -I/usr/local/include
 CFLAGS	= $(DEBUG) -Wall $(INCLUDE) -Winline -pipe
diff --git a/examples/isr b/examples/isr
new file mode 100755
index 0000000..da8a933
Binary files /dev/null and b/examples/isr differ
diff --git a/examples/isr.c b/examples/isr.c
index abc6aec..50138fb 100644
--- a/examples/isr.c
+++ b/examples/isr.c
@@ -50,14 +50,14 @@ static volatile int globalCounter [8] ;
  *********************************************************************************
  */
 
-void myInterrupt0 (void) { ++globalCounter [0] ; }
-void myInterrupt1 (void) { ++globalCounter [1] ; }
-void myInterrupt2 (void) { ++globalCounter [2] ; }
-void myInterrupt3 (void) { ++globalCounter [3] ; }
-void myInterrupt4 (void) { ++globalCounter [4] ; }
-void myInterrupt5 (void) { ++globalCounter [5] ; }
-void myInterrupt6 (void) { ++globalCounter [6] ; }
-void myInterrupt7 (void) { ++globalCounter [7] ; }
+void myInterrupt0 (void) { ++globalCounter [0] ; delay(100);if(digitalRead(0)==LOW){ printf ("key 1 press\n");fflush (stdout) ;}}
+void myInterrupt1 (void) { ++globalCounter [1] ; delay(100);if(digitalRead(1)==LOW){ printf ("key 2 press\n");fflush (stdout) ;}}
+void myInterrupt2 (void) { ++globalCounter [2] ; delay(100);if(digitalRead(2)==LOW){ printf ("key 3 press\n");fflush (stdout) ;}}
+void myInterrupt3 (void) { ++globalCounter [3] ; delay(100);if(digitalRead(3)==LOW){ printf ("key 4 press\n");fflush (stdout) ;}}
+void myInterrupt4 (void) { ++globalCounter [4] ; delay(100);if(digitalRead(4)==LOW){ printf ("key 5 press\n");fflush (stdout) ;}}
+void myInterrupt5 (void) { ++globalCounter [5] ; delay(100);if(digitalRead(5)==LOW){ printf ("key 6 press\n");fflush (stdout) ;}}
+void myInterrupt6 (void) { ++globalCounter [6] ; delay(100);if(digitalRead(6)==LOW){ printf ("key 7 press\n");fflush (stdout) ;}}
+void myInterrupt7 (void) { ++globalCounter [7] ; delay(100);if(digitalRead(7)==LOW){ printf ("key 8 press\n");fflush (stdout) ;}}
 
 
 /*
@@ -68,7 +68,7 @@ void myInterrupt7 (void) { ++globalCounter [7] ; }
 
 int main (void)
 {
-  int gotOne, pin ;
+  int gotOne, pin ,ret;
   int myCounter [8] ;
 
   for (pin = 0 ; pin < 8 ; ++pin) 
@@ -82,28 +82,18 @@ int main (void)
   wiringPiISR (3, INT_EDGE_FALLING, &myInterrupt3) ;
   wiringPiISR (4, INT_EDGE_FALLING, &myInterrupt4) ;
   wiringPiISR (5, INT_EDGE_FALLING, &myInterrupt5) ;
-  wiringPiISR (6, INT_EDGE_FALLING, &myInterrupt6) ;
-  wiringPiISR (7, INT_EDGE_FALLING, &myInterrupt7) ;
+
+  // wiringPiISR (6, INT_EDGE_FALLING, &myInterrupt6) ;
+  // wiringPiISR (7, INT_EDGE_FALLING, &myInterrupt7) ;
+    
+    printf ("Waiting ... \n") ; 
+    fflush (stdout) ;
 
   for (;;)
   {
     gotOne = 0 ;
-    printf ("Waiting ... ") ; fflush (stdout) ;
-
-    for (;;)
-    {
-      for (pin = 0 ; pin < 8 ; ++pin)
-      {
-	if (globalCounter [pin] != myCounter [pin])
-	{
-	  printf (" Int on pin %d: Counter: %5d\n", pin, globalCounter [pin]) ;
-	  myCounter [pin] = globalCounter [pin] ;
-	  ++gotOne ;
-	}
-      }
-      if (gotOne != 0)
-	break ;
-    }
+
+    sleep(1);
   }
 
   return 0 ;
diff --git a/gpio/Makefile b/gpio/Makefile
index 51c9687..f025959 100755
--- a/gpio/Makefile
+++ b/gpio/Makefile
@@ -30,8 +30,8 @@ ifneq ($V,1)
 Q ?= @
 endif
 
-#DEBUG	= -g -O0
-DEBUG	= -O2
+DEBUG	= -g -O0
+#DEBUG	= -O2
 CC	= gcc
 INCLUDE	= -I$(DESTDIR)$(PREFIX)/include
 CFLAGS	= $(DEBUG) -Wall -Wextra $(INCLUDE) -Winline -pipe
@@ -108,6 +108,10 @@ EXTRA_CFLAGS = -DCONFIG_ORANGEPI_4
 EXTRA_CFLAGS += -DCONFIG_ORANGEPI
 endif
 
+ifeq ($(PLATFORM), OrangePi_4B)
+EXTRA_CFLAGS = -DCONFIG_ORANGEPI_4B
+EXTRA_CFLAGS += -DCONFIG_ORANGEPI
+endif
 # May not need to  alter anything below this line
 ###############################################################################
 
@@ -157,6 +161,10 @@ ifeq ($(PLATFORM), OrangePi_4)
   SRC += OrangePi.c
 endif
 
+ifeq ($(PLATFORM), OrangePi_4B)
+  SRC += OrangePi.c
+endif
+
 OBJ	=	$(SRC:.c=.o)
 
 all:		gpio
diff --git a/gpio/OrangePi.c b/gpio/OrangePi.c
index fd0bbca..910755c 100755
--- a/gpio/OrangePi.c
+++ b/gpio/OrangePi.c
@@ -710,7 +710,98 @@ char *physNames[64] =
 };
 #endif
 
+#ifdef CONFIG_ORANGEPI_4B
+int pinToGpioOrangePi [64] =
+{
+	150,  33,      // 0, 1
+	50, 35,      // 2, 3
+	92, 54,      // 4  5
+	55,  56,      // 6, 7
+	149,  -1,      // 8, 9
+	-1,  -1,      //10,11
+	
+	-1,  -1,      //12,13
+	
+	-1,  -1,      //14,15
+	-1, -1,      //16,17
+	-1,  -1,      //18,19
+	-1,  -1,      //20,21
+	-1,  -1,      //22,23
+	-1,  -1,      //24,25
+
+	
+	-1,  -1,      //26,27
+	
+	-1,  -1,    //28,29
+	-1,   -1,    //30,31
+
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 47
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,// ... 63
+};
 
+int physToWpi[64] =
+{
+	-1,		// 0
+	-1, -1,	// 1, 2
+	-1, -1,  //3, 4
+	-1, -1,  //5, 6
+	0, -1,  //7, 8
+	-1, -1, //9,10
+	1, 2, //11,12
+	3, -1, //13,14
+	4, 5, //15,16
+	-1, 6, //17,18
+	-1, -1, //19,20
+	-1, 7, //21,22
+	-1, -1, //23, 24
+	-1,  8,	// 25, 26
+
+	-1,  -1,   //27, 28
+	-1,  -1,	//29, 30
+	-1,  -1,	//31, 32
+	-1, -1, //33, 34
+	-1, -1, //35, 36
+	-1, -1, //37, 38
+	-1, -1, //39, 40
+	// Padding:
+
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	// ... 56
+	-1, -1, -1, -1, -1, -1, -1,	// ... 63
+};
+
+char *physNames[64] =
+{
+  NULL,
+  "    3.3v", "5v      ",
+  "I2C2_SDA", "5V      ",
+  "I2C2_SCL", "0v      ",
+  "GPIO4_C6", "I2C3_SCL",
+  "      0v", "I2C3_SDA",
+  "GPIO1_A1", "GPIO1_C2",
+  "GPIO1_A3", "0v      ",
+  "GPIO2_D4", "GPIO1_C6",
+  "      0v", "GPIO1_C7",
+  "UART4_TX", "0v      ",
+  "UART4_RX", "GPIO1_D0",
+  "SPI1_CLK", "SPI1_CS ",
+  "      0v", "GPIO4_C5",
+  "I2C2_SDA", "I2C2_SCL",
+  " I2S0_RX", "0v      ",
+  " I2S0_TX", "I2S_CLK ",
+  "I2S0_SCK", "0v      ",
+  "I2S0_SI0", "I2S0_SO0",
+  "I2S0_SI1", "I2S0_SI2",
+  "      0v", "I2S0_SI3",
+       NULL, NULL,
+       NULL, NULL,
+       NULL, NULL,
+       NULL, NULL,
+       NULL, NULL,
+  	   NULL, NULL,
+       NULL, NULL,
+       NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
+};
+#endif
 
 
 /*
@@ -737,14 +828,15 @@ void OrangePiReadAll(void)
 	printf (" +------+-----+----------+------+---+OrangePi RK3399---+---+------+---------+-----+--+\n");
 #elif CONFIG_ORANGEPI_4
 	printf (" +------+-----+----------+------+---+OrangePi 4---+---+------+---------+-----+--+\n");
-
+#elif CONFIG_ORANGEPI_4B
+	printf (" +------+-----+----------+------+---+OrangePi 4B---+---+------+---------+-----+--+\n");
 #endif
     printf (" | GPIO | wPi |   Name   | Mode | V | Physical | V | Mode | Name     | wPi | GPIO |\n");
     printf (" +------+-----+----------+------+---+----++----+---+------+----------+-----+------+\n");
 
-#if defined CONFIG_ORANGEPI_H3 || defined CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4
+#if defined CONFIG_ORANGEPI_H3 || defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B
     for (pin = 1 ; pin <= 42 ; pin += 2)
-#else CONFIG_ORANGEPI_LITE2 || CONFIG_ORANGEPI_H3_ZEROPLUS2 || CONFIG_ORANGEPI_3
+#elif CONFIG_ORANGEPI_LITE2 || CONFIG_ORANGEPI_H3_ZEROPLUS2 || CONFIG_ORANGEPI_3
 	for (pin = 1 ; pin <= 26 ; pin += 2)
 #endif
         readallPhys(pin);
@@ -767,7 +859,8 @@ void OrangePiReadAll(void)
 	printf (" +------+-----+----------+------+---+OrangePi RK3399---+---+------+---------+-----+--+\n");
 #elif CONFIG_ORANGEPI_4
 	printf (" +------+-----+----------+------+---+OrangePi 4---+---+------+---------+-----+--+\n");
-
+#elif CONFIG_ORANGEPI_4B
+	printf (" +------+-----+----------+------+---+OrangePi 4B---+---+------+---------+-----+--+\n");
 
 #endif
     wiringPiDebug = tmp;
diff --git a/gpio/gpio.c b/gpio/gpio.c
index 01258f1..8b20d64 100755
--- a/gpio/gpio.c
+++ b/gpio/gpio.c
@@ -429,7 +429,7 @@ static void doI2Cdetect (UNU int argc, char *argv [])
  *********************************************************************************
  */
 
-static void doSerialTest (UNU int argc, char *argv [])
+static int doSerialTest (UNU int argc, char *argv [])
 {
 	int fd ;
 	int count ;
diff --git a/wiringPi/Makefile b/wiringPi/Makefile
index 8cc4468..2f7eba4 100755
--- a/wiringPi/Makefile
+++ b/wiringPi/Makefile
@@ -34,8 +34,8 @@ endif
 STATIC=libwiringPi.a
 DYNAMIC=libwiringPi.so.$(VERSION)
 
-#DEBUG	= -g -O0
-DEBUG	= -O2
+DEBUG	= -g -O0
+#DEBUG	= -O2
 CC	= gcc
 INCLUDE	= -I.
 DEFS	= -D_GNU_SOURCE
@@ -112,6 +112,10 @@ EXTRA_CFLAGS = -DCONFIG_ORANGEPI_4
 EXTRA_CFLAGS += -DCONFIG_ORANGEPI
 endif
 
+ifeq ($(PLATFORM), OrangePi_4B)
+EXTRA_CFLAGS = -DCONFIG_ORANGEPI_4B
+EXTRA_CFLAGS += -DCONFIG_ORANGEPI
+endif
 ###############################################################################
 
 SRC	=	wiringPi.c						\
@@ -177,6 +181,10 @@ ifeq ($(PLATFORM), OrangePi_4)
 SRC += OrangePi.c
 endif
 
+ifeq ($(PLATFORM), OrangePi_4B)
+SRC += OrangePi.c
+endif
+
 HEADERS =	$(shell ls *.h)
 
 OBJ	=	$(SRC:.c=.o)
diff --git a/wiringPi/OrangePi.c b/wiringPi/OrangePi.c
index 03ce106..7a3d48a 100755
--- a/wiringPi/OrangePi.c
+++ b/wiringPi/OrangePi.c
@@ -971,7 +971,111 @@ volatile uint32_t *gpio4_base;
 #endif  /* CONFIG_ORANGEPI_4 */
 // add 2019.1.8
 
+#ifdef CONFIG_ORANGEPI_4B
+int pinToGpioOrangePi [64] =
+{
+	150,  33,      // 0, 1
+	50, 35,      // 2, 3
+	92, 54,      // 4  5
+	55,  56,      // 6, 7
+	149,  -1,      // 8, 9
+	-1,  -1,      //10,11
+	
+	-1,  -1,      //12,13
+	
+	-1,  -1,      //14,15
+	-1, -1,      //16,17
+	-1,  -1,      //18,19
+	-1,  -1,      //20,21
+	-1,  -1,      //22,23
+	-1,  -1,      //24,25
 
+	
+	-1,  -1,      //26,27
+	
+	-1,  -1,    //28,29
+	-1,   -1,    //30,31
+
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // ... 47
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,// ... 63
+};
+
+int physToGpioOrangePi[64] =//head num map to OrangePi
+{
+	-1,       // 0
+	-1, -1,   // 1, 2
+	-1, -1,   // 3, 4
+	-1, -1,   // 5, 6
+	150, -1,   // 7, 8
+	-1, -1,   // 9, 10
+	33, 50,   // 11, 12
+	35, -1,   // 13, 14
+	92, 54,   // 15, 16
+	-1, 55,   // 17, 18
+	-1, -1,   // 19, 20
+	-1, 56,   // 21, 22
+	-1, -1,   // 23, 24
+	-1, 149,   // 25, 26
+ 	-1, -1,   // 27, 28
+	-1, -1,   // 29, 30
+	-1, -1,   // 31, 32
+	-1, -1,   // 33, 34
+	-1, -1,   // 35, 36
+	-1, -1,   // 37, 38
+	-1, -1,   // 39, 40
+// Padding:
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,   // ... 56
+  -1, -1, -1, -1, -1, -1, -1,   // ... 63
+};
+
+int physToPinOrangePi[64] = //return wiringPI pin
+{
+	-1,		// 0
+	-1, -1,	// 1, 2
+	-1, -1,  //3, 4
+	-1, -1,  //5, 6
+	0, -1,  //7, 8
+	-1, -1, //9,10
+	1, 2, //11,12
+	3, -1, //13,14
+	4, 5, //15,16
+	-1, 6, //17,18
+	-1, -1, //19,20
+	-1, 7, //21,22
+	-1, -1, //23, 24
+	-1,  8,	// 25, 26
+
+	-1,  -1,   //27, 28
+	-1,  -1,	//29, 30
+	-1,  -1,	//31, 32
+	-1, -1, //33, 34
+	-1, -1, //35, 36
+	-1, -1, //37, 38
+	-1, -1, //39, 40
+	// Padding:
+
+	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,	// ... 56
+	-1, -1, -1, -1, -1, -1, -1,	// ... 63
+
+};
+  int ORANGEPI_PIN_MASK[5][32] =  //[BANK]	[INDEX]
+  {
+   { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,},//PA
+   { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,},//PB
+   { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,},//PC
+   { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,},//PD
+   { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,},//PD
+  };
+
+volatile uint32_t *gpio2_base;
+volatile uint32_t *cru_base;
+volatile uint32_t *grf_base;
+volatile uint32_t *pmugrf_base;
+volatile uint32_t *pmucru_base;
+volatile uint32_t *gpio1_base;
+volatile uint32_t *gpio4_base;
+#endif  /* CONFIG_ORANGEPI_4B */
+// add 2020.02.16
 
 /*
  * Data for use with the boardId functions.
@@ -997,6 +1101,8 @@ const char *piModelNames[6] =
 	"OrangePi H3 family",
 #elif CONFIG_ORANGEPI_ZERO
 	"OrangePi Zero",
+#elif CONFIG_ORANGEPI_4B
+	"OrangePi 4B",	
 #endif
 };
 
@@ -1033,7 +1139,7 @@ unsigned int readR(unsigned int addr)
 	else                         /* Group A, B and D */
 		val = *((char *)OrangePi_gpio + mmap_seek);
     return val;
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	unsigned int val = 0;
 	unsigned int mmap_base = (addr & ~MAP_MASK);
 	unsigned int mmap_seek = (addr - mmap_base);
@@ -1081,7 +1187,7 @@ void writeR(unsigned int val, unsigned int addr)
 	else
 		*((char *)OrangePi_gpio + mmap_seek) = val;
 	
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	unsigned int mmap_base = (addr & ~MAP_MASK);
 	unsigned int mmap_seek = (addr - mmap_base);
 	if(mmap_base == CRU_BASE) 
@@ -1245,12 +1351,12 @@ void sunxi_pwm_set_act(int act_cys) {
 int OrangePi_get_gpio_mode(int pin)
 {
 	unsigned int regval = 0;
-	unsigned int bank   = pin >> 5;  //算出 pin 属于哪一组  H6 有 2/3/5/6/7
-	unsigned int index  = pin - (bank << 5); //算出 pin 属于组中的第多少个
+	unsigned int bank   = pin >> 5;  //锟斤拷锟� pin 锟斤拷锟斤拷锟斤拷一锟斤拷  H6 锟斤拷 2/3/5/6/7
+	unsigned int index  = pin - (bank << 5); //锟斤拷锟� pin 锟斤拷锟斤拷锟斤拷锟叫的第讹拷锟劫革拷
 	unsigned int phyaddr = 0;
 	unsigned char mode = -1;
 	
-#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	unsigned int grf_phyaddr = 0, ddr_phyaddr = 0;
 	int offset = ((index - ((index >> 3) << 3)));
 	if(bank == 1){
@@ -1308,7 +1414,7 @@ int OrangePi_set_gpio_mode(int pin, int mode)
     unsigned int phyaddr = 0;
 #ifdef CONFIG_ORANGEPI_2G_IOT
 	unsigned int base_address = 0;
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	int offset = ((index - ((index >> 3) << 3)));
 	unsigned int cru_phyaddr, grf_phyaddr, gpio_phyaddr;
 #else
@@ -1340,7 +1446,7 @@ int OrangePi_set_gpio_mode(int pin, int mode)
 		phyaddr = base_address + OEN_SET_OUT_REGISTER;
 	else
 		printf("Invalid mode\n");
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	if(bank == 1){
 		cru_phyaddr = PMUCRU_BASE + PMUCRU_CLKGATE_CON1_OFFSET;
 		grf_phyaddr = PMUGRF_BASE + ((index >> 3) << 2) + 0x10;
@@ -1362,7 +1468,7 @@ int OrangePi_set_gpio_mode(int pin, int mode)
 #endif
     /* Ignore unused gpio */
     if (ORANGEPI_PIN_MASK[bank][index] != -1) {
-#if ! (defined CONFIG_ORANGEPI_2G_IOT || defined CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4)
+#if ! (defined CONFIG_ORANGEPI_2G_IOT || defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 		regval = readR(phyaddr);
 			if (wiringPiDebug)
 				printf("Before read reg val: 0x%x offset:%d\n",regval,offset);
@@ -1375,7 +1481,7 @@ int OrangePi_set_gpio_mode(int pin, int mode)
 #ifdef CONFIG_ORANGEPI_2G_IOT
             writeR(GPIO_BIT(index), phyaddr);
 
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 			writeR(0xffff0180, cru_phyaddr);
 			regval = readR(grf_phyaddr);
 			regval |= 0x3 << ((offset << 1) | 0x10);
@@ -1466,7 +1572,7 @@ int OrangePi_digitalWrite(int pin, int value)
 #ifdef CONFIG_ORANGEPI_2G_IOT
 	unsigned int base_address = 0;
 
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	unsigned int regval = 0;
 	unsigned int cru_phyaddr = 0;
 
@@ -1524,7 +1630,7 @@ int OrangePi_digitalWrite(int pin, int value)
 	else
 		printf("Invalid value\n");
 	
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 		if(bank == 1){
 			phyaddr = GPIO1_BASE + GPIO_SWPORTA_DR_OFFSET;
 			cru_phyaddr = PMUCRU_BASE + PMUCRU_CLKGATE_CON1_OFFSET;
@@ -1546,7 +1652,7 @@ int OrangePi_digitalWrite(int pin, int value)
 		writeR(GPIO_BIT(index), phyaddr);
 
 #else
-	#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+	#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 		writeR(0xffff0180, cru_phyaddr);
 	#endif
 		regval = readR(phyaddr);
@@ -1579,7 +1685,7 @@ int OrangePi_digitalRead(int pin)
 	int bank = pin >> 5;
 	int index = pin - (bank << 5);
 	int val;
-#if ! (defined CONFIG_ORANGEPI_2G_IOT || defined CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4)
+#if ! (defined CONFIG_ORANGEPI_2G_IOT || defined CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 
 	unsigned int phyaddr;
 	
@@ -1616,7 +1722,7 @@ int OrangePi_digitalRead(int pin)
 	phys_SET_R = base_address + SET_REGISTER;
 	phys_VAL_R = base_address + VAL_REGISTER;
 	
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	unsigned int phyaddr;
 	if(bank == 1)
 		phyaddr = GPIO1_BASE + GPIO_EXT_PORTA_OFFSET;			
@@ -1673,7 +1779,7 @@ int isOrangePi(void)
 #elif CONFIG_ORANGEPI_LITE2 || CONFIG_ORANGEPI_3
 	/* Support: OrangePi zero */
 	char *OrangePi_string = "sun50iw6";
-#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#elif (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	/* Support: OrangePi RK3399 */
 	char *OrangePi_string = "rk3399";
 
@@ -1697,7 +1803,7 @@ int isOrangePi(void)
 
 	fclose(cpuFd);
 
-#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || defined CONFIG_ORANGEPI_4B)
 	strcpy(line, "Hardware		  : Rockchip rk3399 Family");
 #endif 
 
diff --git a/wiringPi/OrangePi.h b/wiringPi/OrangePi.h
index 3c4b258..ce2155b 100755
--- a/wiringPi/OrangePi.h
+++ b/wiringPi/OrangePi.h
@@ -77,7 +77,7 @@
 #endif
 
 /*********** OrangePi RK3399 *************/
-#if CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4
+#if CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4 || CONFIG_ORANGEPI_4B
 
 #define GPIO1_BASE 							0xff730000
 #define GPIO2_BASE 							0xff780000
diff --git a/wiringPi/wiringPi.c b/wiringPi/wiringPi.c
index 34f7040..269661a 100755
--- a/wiringPi/wiringPi.c
+++ b/wiringPi/wiringPi.c
@@ -329,12 +329,18 @@ int wiringPiTryGpioMem  = FALSE ;
 // sysFds:
 //	Map a file descriptor from the /sys/class/gpio/gpioX/value
 
-static int sysFds [64] =
+static int sysFds [160] =
 {
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+  -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 };
 
 // ISR Data
@@ -775,7 +781,7 @@ int piGpioLayout (void)
       break ;
 
 	
-#if CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4
+#if CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4 || CONFIG_ORANGEPI_4B
   strcpy(line, "Hardware		 : Rockchip rk3399 Family");	
 #endif
 
@@ -793,7 +799,7 @@ int piGpioLayout (void)
 
   fclose (cpuFd) ;
 
-#if CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4
+#if CONFIG_ORANGEPI_RK3399 || CONFIG_ORANGEPI_4 || CONFIG_ORANGEPI_4B
 	  strcpy(line, "Revision  : 0000");
 #endif
 
@@ -959,7 +965,7 @@ void piBoardId (int *model, int *rev, int *mem, int *maker, int *warranty)
       break ;
 
   fclose (cpuFd) ;
-#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#if (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || CONFIG_ORANGEPI_4B)
 	strcpy(line, "Revision	: 0000");
 #endif
 
@@ -2030,7 +2036,9 @@ int wiringPiISR (int pin, int mode, void (*function)(void))
     else
       modeS = "both" ;
 
-    sprintf (pinS, "%d", bcmGpioPin) ;
+    
+    //gpio edge 鍛戒护琛屾帴鍙楀弬鏁颁负wpi缂栫爜
+    sprintf (pinS, "%d", pin) ;
 
     if ((pid = fork ()) < 0)	// Fail
       return wiringPiFailure (WPI_FATAL, "wiringPiISR: fork failed: %s\n", strerror (errno)) ;
@@ -2060,7 +2068,7 @@ int wiringPiISR (int pin, int mode, void (*function)(void))
   if (sysFds [bcmGpioPin] == -1)
   {
     sprintf (fName, "/sys/class/gpio/gpio%d/value", bcmGpioPin) ;
-    if ((sysFds [bcmGpioPin] = open (fName, O_RDWR)) < 0)
+    if ((sysFds [bcmGpioPin] = open (fName, O_RDONLY)) < 0)
       return wiringPiFailure (WPI_FATAL, "wiringPiISR: unable to open %s: %s\n", fName, strerror (errno)) ;
   }
 
@@ -2360,7 +2368,7 @@ int wiringPiSetup (void)
 		return wiringPiFailure(WPI_ALMOST, 
 				"wiringPiSetup: mmap (GPIO) failed: %s\n", strerror(errno));
 #else
-#if ! (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4)
+#if ! (defined CONFIG_ORANGEPI_RK3399 || defined CONFIG_ORANGEPI_4 || CONFIG_ORANGEPI_4B)
 	/* GPIO */
 #ifdef CONFIG_ORANGEPI_LITE2 || CONFIG_ORANGEPI_3
     gpio = (uint32_t *)mmap(0, BLOCK_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, GPIO_BASE);