diff --git a/Boards/CYD-8048S043C/Source/CYD8048S043C.cpp b/Boards/CYD-8048S043C/Source/CYD8048S043C.cpp
index 2417c7f2..ba5e49c7 100644
--- a/Boards/CYD-8048S043C/Source/CYD8048S043C.cpp
+++ b/Boards/CYD-8048S043C/Source/CYD8048S043C.cpp
@@ -37,14 +37,14 @@ const Configuration cyd_8048s043c_config = {
         i2c::Configuration {
             .name = "External",
             .port = I2C_NUM_1,
-            .initMode = i2c::InitMode::ByTactility,
+            .initMode = i2c::InitMode::Disabled,
             .isMutable = true,
             .config = (i2c_config_t) {
                 .mode = I2C_MODE_MASTER,
                 .sda_io_num = GPIO_NUM_17,
                 .scl_io_num = GPIO_NUM_18,
-                .sda_pullup_en = true,
-                .scl_pullup_en = true,
+                .sda_pullup_en = false,
+                .scl_pullup_en = false,
                 .master = {
                     .clk_speed = 400000
                 },
@@ -77,5 +77,31 @@ const Configuration cyd_8048s043c_config = {
             .isMutable = false,
             .lock = nullptr
         }
+    },
+    .uart {
+        //P4 header, JST SH 1.0, GND / 3.3V / IO17 / IO18
+        uart::Configuration {
+            .name = "UART1",
+            .port = UART_NUM_1,
+            .rxPin = GPIO_NUM_17,
+            .txPin = GPIO_NUM_18,
+            .rtsPin = GPIO_NUM_NC,
+            .ctsPin = GPIO_NUM_NC,
+            .rxBufferSize = 1024,
+            .txBufferSize = 1024,
+            .config = {
+                .baud_rate = 9600,
+                .data_bits = UART_DATA_8_BITS,
+                .parity    = UART_PARITY_DISABLE,
+                .stop_bits = UART_STOP_BITS_1,
+                .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
+                .rx_flow_ctrl_thresh = 0,
+                .source_clk = UART_SCLK_DEFAULT,
+                .flags = {
+                    .allow_pd = 0,
+                    .backup_before_sleep = 0,
+                }
+            }
+        }
     }
 };
diff --git a/Boards/CYD-JC2432W328C/Source/JC2432W328C.cpp b/Boards/CYD-JC2432W328C/Source/JC2432W328C.cpp
index e00c599c..6237185a 100644
--- a/Boards/CYD-JC2432W328C/Source/JC2432W328C.cpp
+++ b/Boards/CYD-JC2432W328C/Source/JC2432W328C.cpp
@@ -54,7 +54,7 @@ const Configuration cyd_jc2432w328c_config = {
         i2c::Configuration {
             .name = "External",
             .port = I2C_NUM_1,
-            .initMode = i2c::InitMode::ByTactility,
+            .initMode = i2c::InitMode::Disabled,
             .isMutable = true,
             .config = (i2c_config_t) {
                 .mode = I2C_MODE_MASTER,
@@ -117,6 +117,32 @@ const Configuration cyd_jc2432w328c_config = {
             .initMode = spi::InitMode::ByTactility,
             .isMutable = false,
             .lock = nullptr
-        },
+        }
+    },
+    .uart {
+        //CN1 header, JST SH 1.25, GND / IO22 / IO21 / 3.3V
+        uart::Configuration {
+            .name = "UART1",
+            .port = UART_NUM_1,
+            .rxPin = GPIO_NUM_21,
+            .txPin = GPIO_NUM_22,
+            .rtsPin = GPIO_NUM_NC,
+            .ctsPin = GPIO_NUM_NC,
+            .rxBufferSize = 1024,
+            .txBufferSize = 1024,
+            .config = {
+                .baud_rate = 9600,
+                .data_bits = UART_DATA_8_BITS,
+                .parity    = UART_PARITY_DISABLE,
+                .stop_bits = UART_STOP_BITS_1,
+                .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
+                .rx_flow_ctrl_thresh = 0,
+                .source_clk = UART_SCLK_DEFAULT,
+                .flags = {
+                    .allow_pd = 0,
+                    .backup_before_sleep = 0,
+                }
+            }
+        }
     }
 };
diff --git a/Boards/CYD-JC8048W550C/Source/JC8048W550C.cpp b/Boards/CYD-JC8048W550C/Source/JC8048W550C.cpp
index c2f019ae..1f69379a 100644
--- a/Boards/CYD-JC8048W550C/Source/JC8048W550C.cpp
+++ b/Boards/CYD-JC8048W550C/Source/JC8048W550C.cpp
@@ -38,7 +38,7 @@ const Configuration cyd_jc8048w550c_config = {
         i2c::Configuration {
             .name = "External",
             .port = I2C_NUM_1,
-            .initMode = i2c::InitMode::ByTactility,
+            .initMode = i2c::InitMode::Disabled,
             .isMutable = true,
             .config = (i2c_config_t) {
                 .mode = I2C_MODE_MASTER,
@@ -78,5 +78,31 @@ const Configuration cyd_jc8048w550c_config = {
             .isMutable = false,
             .lock = nullptr
         }
+    },
+    .uart {
+        //P4 header, JST SH 1.0, GND / 3.3V / IO17 / IO18
+        uart::Configuration {
+            .name = "UART1",
+            .port = UART_NUM_1,
+            .rxPin = GPIO_NUM_17,
+            .txPin = GPIO_NUM_18,
+            .rtsPin = GPIO_NUM_NC,
+            .ctsPin = GPIO_NUM_NC,
+            .rxBufferSize = 1024,
+            .txBufferSize = 1024,
+            .config = {
+                .baud_rate = 9600,
+                .data_bits = UART_DATA_8_BITS,
+                .parity    = UART_PARITY_DISABLE,
+                .stop_bits = UART_STOP_BITS_1,
+                .flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
+                .rx_flow_ctrl_thresh = 0,
+                .source_clk = UART_SCLK_DEFAULT,
+                .flags = {
+                    .allow_pd = 0,
+                    .backup_before_sleep = 0,
+                }
+            }
+        }
     }
 };