diff --git a/examples/blink.c b/examples/blink.c
index 99bb2ac..7d77eba 100644
--- a/examples/blink.c
+++ b/examples/blink.c
@@ -33,6 +33,7 @@ unsigned char getGpioNum(void)
 		case PI_MODEL_4:
 		case PI_MODEL_5_PLUS:
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 		case PI_MODEL_ZERO_2_W:
 			return 28;
 			break;
diff --git a/gpio/readall.c b/gpio/readall.c
index 55d0b3e..365154b 100644
--- a/gpio/readall.c
+++ b/gpio/readall.c
@@ -1070,18 +1070,18 @@ static char * physNames_CM4[64] =
 	"    3.3V", "5V      ",
 	"   SDA.2", "5V      ",
 	"   SCL.2", "GND     ",
-	"GPIO4_A4", "RXD.2   ",
+	"   TXD.9", "RXD.2   ",
 	"     GND", "TXD.2   ",
 	"GPIO3_C6", "GPIO3_C7",
 	"GPIO4_A0", "GND     ",
-	"GPIO4_A2", "GPIO4_A3",
+	"   TXD.7", "RXD.7   ",
 	"    3.3V", "GPIO4_A1",
 	"SPI3_TXD", "GND     ",
 	"SPI3_RXD", "GPIO4_B1",
 	"SPI3_CLK", "SPI3_CS1",
 	"     GND", "GPIO4_A7",
 	"   SDA.3", "SCL.3   ",
-	"GPIO4_A5", "GND     ",
+	"   RXD.9", "GND     ",
 	"GPIO3_D4", "GPIO4_C0",
 	"GPIO3_D7", "GND     ",
 	"GPIO3_D0", "GPIO3_D5",
@@ -1404,6 +1404,13 @@ void OrangePiReadAll(int model)
 			physNames =  physNames_CM4;
 			alts = alts_rk3588;
 			break;
+		case PI_MODEL_3B:
+			printf (" +------+-----+----------+--------+---+   PI3B   +---+--------+----------+-----+------+\n");
+			physToWpi =  physToWpi_CM4;
+			physNames =  physNames_CM4;
+			alts = alts_rk3588;
+			break;
+
 		default:
 			printf ("Oops - unable to determine board type... model: %d\n", model);
 			break ;
@@ -1422,6 +1429,7 @@ void OrangePiReadAll(int model)
 		case PI_MODEL_WIN:
 		case PI_MODEL_5_PLUS:
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 		case PI_MODEL_ZERO_2_W:
 			for (pin = 1 ; pin <= 40; pin += 2)
 				readallPhys(pin);
@@ -1516,6 +1524,9 @@ void OrangePiReadAll(int model)
 		case PI_MODEL_CM4:
 			printf (" +------+-----+----------+--------+---+  PI CM4  +---+--------+----------+-----+------+\n");
 			break;
+		case PI_MODEL_3B:
+			printf (" +------+-----+----------+--------+---+   PI3B   +---+--------+----------+-----+------+\n");
+			break;
 		default:
 			printf ("Oops - unable to determine board type... model: %d\n", model);
 			break ;
diff --git a/wiringPi/wiringPi.c b/wiringPi/wiringPi.c
index ce82d01..d65122d 100755
--- a/wiringPi/wiringPi.c
+++ b/wiringPi/wiringPi.c
@@ -1885,6 +1885,7 @@ void piBoardId (int * model)
 	else if (strncmp(revision, "orangepi5b.",     		   11) == 0) { *model = PI_MODEL_5B; }
 	else if (strncmp(revision, "orangepi5plus.",     	   14) == 0) { *model = PI_MODEL_5_PLUS; }
 	else if (strncmp(revision, "orangepicm4.",                 12) == 0) { *model = PI_MODEL_CM4; }
+	else if (strncmp(revision, "orangepi3b.",                  11) == 0) { *model = PI_MODEL_3B; }
 
 	if (wiringPiDebug)
 		printf("piBoardId: model = %d\n", *model);
@@ -3122,6 +3123,7 @@ int wiringPiSetup (void)
 			ORANGEPI_PIN_MASK = ORANGEPI_PIN_MASK_5PLUS;
 			break;
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 			pinToGpio =  pinToGpio_CM4;
 			physToGpio = physToGpio_CM4;
 			ORANGEPI_PIN_MASK = ORANGEPI_PIN_MASK_CM4;
@@ -3277,6 +3279,7 @@ int wiringPiSetup (void)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 
 			/* GPIO Register */
 			rk3566_soc_info_t.gpio0_base = (uint32_t *)mmap(0, BLOCK_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, RK3566_GPIO0_BASE);
@@ -3581,6 +3584,7 @@ unsigned int readR(unsigned int addr)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 
 			val = 0;
 
@@ -3712,6 +3716,7 @@ void writeR(unsigned int val, unsigned int addr)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 
 			mmap_base = (addr & (~0xfff));
 			mmap_seek = (addr - mmap_base);
@@ -3894,6 +3899,7 @@ int OrangePi_get_gpio_mode(int pin)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 
 			if(bank == 0){
 				grf_phyaddr = RK3566_PMU_GRF_BASE + RK3566_PMU_GRF_GPIO0A_IOMUX_L_OFFSET + ((pin >> 2) << 2);
@@ -4234,6 +4240,7 @@ int OrangePi_set_gpio_mode(int pin, int mode)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 			if(bank == 0){
 				cru_phyaddr = RK3566_PMU_CRU_BASE + RK3566_PMUCRU_PMUGATE_CON01_OFFSET;
 				cru_val = ~((0x3 << 9) | (0x3 << (16 + 9)));
@@ -4558,6 +4565,7 @@ int OrangePi_digitalWrite(int pin, int value)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 
 			if(bank == 0){
 				dr_phyaddr = RK3566_GPIO0_BASE + RK3566_GPIO_SWPORT_DR_L_OFFSET + ((index >> 4) << 2);
@@ -4703,6 +4711,7 @@ int OrangePi_digitalRead(int pin)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 
 			if(bank == 0)
 				phyaddr = RK3566_GPIO0_BASE + RK3566_GPIO_EXT_PORT_OFFSET;
@@ -4813,6 +4822,7 @@ void OrangePi_set_gpio_pullUpDnControl (int pin, int pud)
 			break;
 
 		case PI_MODEL_CM4:
+		case PI_MODEL_3B:
 
 			if (bank == 0)
 				phyaddr = RK3566_PMU_GRF_BASE + RK3566_PMU_GRF_GPIO0A_P_OFFSET  + (((pin - 0) >> 3) << 2);
diff --git a/wiringPi/wiringPi.h b/wiringPi/wiringPi.h
index caeed44..8eaedca 100644
--- a/wiringPi/wiringPi.h
+++ b/wiringPi/wiringPi.h
@@ -355,6 +355,7 @@ extern int wiringPiDebug;
 
 /* Rockchip RK3566 */
 #define	PI_MODEL_CM4				27
+#define	PI_MODEL_3B				28
 
 extern const char *piModelNames    [16] ;