diff --git a/boards.txt b/boards.txt
index 7d0f0d6..3c16f4b 100644
--- a/boards.txt
+++ b/boards.txt
@@ -15,8 +15,6 @@ m1.build.variant=standard
 m1.menu.clksrc=400MHz FPGA Clock
 m1.menu.clksrc.fpga.build.f_cpu=400000000L
 
-#m1.build.mcu=rv64gc
-#m1.build.mabi=ilp64
 m1.build.mcmodel=medany
 
 #"The 'core' file directory for this board, in ./cores
diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index 455bcfe..25253d3 100644
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -33,14 +33,18 @@
 //#include <avr/interrupt.h>
 
 #include "binary.h"
-//#include "pins_arduino.h"
+#include "pins_arduino.h"
+
+#include "fpioa.h"
+#include "gpiohs.h"
+#include "gpio.h"
+#include "gpio_common.h"
 
 #ifdef __cplusplus
 extern "C"{
 #endif // __cplusplus
-
-//#include "wiring.h"
-//#include "wiring_constants.h"
+#include "wiring.h"
+#include "wiring_constants.h"
 
 #define	SystemCoreClock F_CPU
 
@@ -77,7 +81,7 @@ void noTone(uint8_t _pin);
 // Include board variant
 //#include "variant.h"
 
-//#include "wiring_digital.h"
+#include "wiring_digital.h"
 //#include "wiring_analog.h"
 //#include "wiring_shift.h"
 //#include "WInterrupts.h"
diff --git a/cores/arduino/main.cpp b/cores/arduino/main.cpp
index b345b3b..bbf10e4 100644
--- a/cores/arduino/main.cpp
+++ b/cores/arduino/main.cpp
@@ -1,7 +1,7 @@
 
 #define ARDUINO_MAIN
 #include "Arduino.h"
-//#include "encoding.h"
+#include "encoding.h"
 
 
 #define cmb() __asm__ __volatile__ ("" ::: "memory")
@@ -12,8 +12,8 @@
  */
 int main( void )
 {
-  //init();
-
+  pll_init();
+  fpioa_init();
   setup();
 
   do {
diff --git a/cores/arduino/wiring.c b/cores/arduino/wiring.c
new file mode 100644
index 0000000..4264bb9
--- /dev/null
+++ b/cores/arduino/wiring.c
@@ -0,0 +1,20 @@
+#include "Arduino.h"
+#include "sysctl.h"
+#include "sleep.h"
+
+uint64_t millis(){
+    return sysctl_get_time_us()/1000;
+}
+uint64_t micros(){
+    return sysctl_get_time_us();
+}
+void delay(uint64_t dwMs){
+    msleep(dwMs);
+    return;
+}
+void pll_init(){
+    sysctl_pll_set_freq(SYSCTL_PLL0, 800000000UL);
+    sysctl_pll_set_freq(SYSCTL_PLL1, 300000000UL);
+    sysctl_pll_set_freq(SYSCTL_PLL2, 45158400UL);
+    return;
+}
\ No newline at end of file
diff --git a/cores/arduino/wiring.h b/cores/arduino/wiring.h
new file mode 100644
index 0000000..33cc8a7
--- /dev/null
+++ b/cores/arduino/wiring.h
@@ -0,0 +1,32 @@
+#ifndef _WIRING_
+#define _WIRING_
+
+#include "sysctl.h"
+#include "sleep.h"
+/**
+ * \brief Returns the number of milliseconds since the board began running the current program.
+ *
+ * \return Number of milliseconds since the program started (uint64_t)
+ */
+extern uint64_t millis(void);
+
+/**
+ * \brief Returns the number of microseconds since the board began running the current program.
+ *
+ * \note There are 1,000 microseconds in a millisecond and 1,000,000 microseconds in a second.
+ */
+extern uint64_t micros(void);
+
+/**
+ * \brief Pauses the program for the amount of time (in miliseconds) specified as parameter.
+ * (There are 1000 milliseconds in a second.)
+ *
+ * \param dwMs the number of milliseconds to pause (uint64_t)
+ */
+extern void delay(uint64_t dwMs);
+
+void pll_init(void);
+
+
+
+#endif
\ No newline at end of file
diff --git a/cores/arduino/wiring_constants.h b/cores/arduino/wiring_constants.h
new file mode 100644
index 0000000..bb31dca
--- /dev/null
+++ b/cores/arduino/wiring_constants.h
@@ -0,0 +1,105 @@
+/*
+  Copyright (c) 2011 Arduino.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef _WIRING_CONSTANTS_
+#define _WIRING_CONSTANTS_
+
+#include "encoding.h"
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C"{
+#endif // __cplusplus
+
+#define HIGH 0x1
+#define LOW  0x0
+
+#define INPUT           0x0
+#define OUTPUT          0x3
+#define INPUT_PULLUP    0x2
+#define INPUT_PULLDOWN  0X1
+
+#define PI 3.1415926535897932384626433832795
+#define HALF_PI 1.5707963267948966192313216916398
+#define TWO_PI 6.283185307179586476925286766559
+#define DEG_TO_RAD 0.017453292519943295769236907684886
+#define RAD_TO_DEG 57.295779513082320876798154814105
+#define EULER 2.718281828459045235360287471352
+
+#define SERIAL  0x0
+#define DISPLAY 0x1
+
+enum BitOrder {
+	LSBFIRST = 0,
+	MSBFIRST = 1
+};
+
+//      LOW 0
+//      HIGH 1
+#define CHANGE 2
+#define FALLING 3
+#define RISING 4
+
+#define DEFAULT 1
+#define EXTERNAL 0
+
+// undefine stdlib's abs if encountered
+#ifdef abs
+#undef abs
+#endif // abs
+
+#ifndef min
+#define min(a,b) ((a)<(b)?(a):(b))
+#endif // min
+
+#ifndef max
+#define max(a,b) ((a)>(b)?(a):(b))
+#endif // max
+
+#define abs(x) ((x)>0?(x):-(x))
+#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
+#define round(x)     ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+#define radians(deg) ((deg)*DEG_TO_RAD)
+#define degrees(rad) ((rad)*RAD_TO_DEG)
+#define sq(x) ((x)*(x))
+
+#define interrupts() set_csr(mstatus, MSTATUS_MIE)
+#define noInterrupts() clear_csr(mstatus, MSTATUS_MIE)
+
+#define lowByte(w) ((uint8_t) ((w) & 0xff))
+#define highByte(w) ((uint8_t) ((w) >> 8))
+
+#define bitRead(value, bit) (((value) >> (bit)) & 0x01)
+#define bitSet(value, bit) ((value) |= (1UL << (bit)))
+#define bitClear(value, bit) ((value) &= ~(1UL << (bit)))
+#define bitWrite(value, bit, bitvalue) (bitvalue ? bitSet(value, bit) : bitClear(value, bit))
+
+typedef unsigned int word;
+
+#define bit(b) (1UL << (b))
+
+typedef bool boolean ;
+typedef uint8_t byte ;
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
+
+
+#endif /* _WIRING_CONSTANTS_ */
\ No newline at end of file
diff --git a/cores/arduino/wiring_digital.c b/cores/arduino/wiring_digital.c
new file mode 100644
index 0000000..bb270e5
--- /dev/null
+++ b/cores/arduino/wiring_digital.c
@@ -0,0 +1,33 @@
+
+#include "Arduino.h"
+
+#include <stdint.h>
+
+#include "fpioa.h"
+#include "gpiohs.h"
+#include "gpio.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+
+#ifdef __cplusplus
+extern "C"{
+#endif // __cplusplus
+
+void pinMode(uint8_t dwPin, uint8_t dwMode){           //48个fpio 对应32个gpiohs？
+    fpioa_set_function(dwPin, FUNC_GPIOHS0 + dwPin);
+    gpiohs_set_drive_mode(dwPin, (gpio_drive_mode_t)dwMode);
+    return ;
+}
+
+void digitalWrite(uint8_t dwPin, uint8_t dwVal){
+    gpiohs_set_pin(dwPin, (gpio_pin_value_t)dwVal);
+    return ;
+}
+
+int digitalRead(uint8_t ulPin){
+    return (int)gpiohs_get_pin(ulPin);
+}
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
\ No newline at end of file
diff --git a/cores/arduino/wiring_digital.h b/cores/arduino/wiring_digital.h
new file mode 100644
index 0000000..ca1f354
--- /dev/null
+++ b/cores/arduino/wiring_digital.h
@@ -0,0 +1,59 @@
+#ifndef _WIRING_DIGITAL_
+#define _WIRING_DIGITAL_
+
+#include "Arduino.h"
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C"{
+#endif // __cplusplus
+
+#define PortValue_t uint32_t
+#define PortAddr_t uint32_t
+#define PortRegister_t volatile uint32_t *
+
+#define digitalPinToPort(pin)    ((PortAddr_t)     GPIO_CTRL_ADDR)
+#define digitalPinToPortIn(pin)  ((PortAddr_t)     GPIO_CTRL_ADDR)
+#define digitalPinToBitMask(pin) ((PortValue_t)    (1<<variant_pin_map[pin].bit_pos))
+#define portOutputRegister(port) ((PortRegister_t) (GPIO_CTRL_ADDR + GPIO_OUTPUT_VAL))
+#define portInputRegister(port)  ((PortRegister_t) (GPIO_CTRL_ADDR + GPIO_INPUT_VAL))
+
+/**
+ * \brief Configures the specified pin to behave either as an input or an output. See the description of digital pins for details.
+ *
+ * \param ulPin The number of the pin whose mode you wish to set
+ * \param ulMode Either INPUT or OUTPUT
+ */
+extern void pinMode( uint8_t dwPin, uint8_t dwMode ) ;
+
+/**
+ * \brief Write a HIGH or a LOW value to a digital pin.
+ *
+ * If the pin has been configured as an OUTPUT with pinMode(), its voltage will be set to the
+ * corresponding value: 5V (or 3.3V on 3.3V boards) for HIGH, 0V (ground) for LOW.
+ *
+ * \note Digital pin PIN_LED is harder to use as a digital input than the other digital pins because it has an LED
+ * and resistor attached to it that's soldered to the board on most boards. If you enable its internal 20k pull-up
+ * resistor, it will hang at around 1.7 V instead of the expected 5V because the onboard LED and series resistor
+ * pull the voltage level down, meaning it always returns LOW. If you must use pin PIN_LED as a digital input, use an
+ * external pull down resistor.
+ *
+ * \param dwPin the pin number
+ * \param dwVal HIGH or LOW
+ */
+extern void digitalWrite( uint8_t dwPin, uint8_t dwVal ) ;
+
+/**
+ * \brief Reads the value from a specified digital pin, either HIGH or LOW.
+ *
+ * \param ulPin The number of the digital pin you want to read (int)
+ *
+ * \return HIGH or LOW
+ */
+extern int digitalRead( uint8_t ulPin ) ;
+
+#ifdef __cplusplus
+} // extern "C"
+#endif // __cplusplus
+
+#endif /* _WIRING_DIGITAL_ */
\ No newline at end of file
diff --git a/keywords.txt b/keywords.txt
new file mode 100644
index 0000000..67685a0
--- /dev/null
+++ b/keywords.txt
@@ -0,0 +1,26 @@
+#######################################
+# Syntax Coloring Map For ExampleLibrary
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+
+
+#######################################
+# Instances (KEYWORD2)
+#######################################
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+
+PIN_LED_GREEN        LITERAL1
+PIN_LED_BLUE         LITERAL1
+PIN_LED_RED          LITERAL1
+PIN_LED              LITERAL1
\ No newline at end of file
diff --git a/variants/standard/pins_arduino.h b/variants/standard/pins_arduino.h
index f593039..04185cd 100644
--- a/variants/standard/pins_arduino.h
+++ b/variants/standard/pins_arduino.h
@@ -1,3 +1,7 @@
 // API compatibility
-#include "variant.h"
+#ifdef SIPEED_M1_BOARD
+
+#include "sipeedm1.h"
+
+#endif
 
diff --git a/variants/standard/sipeedm1.h b/variants/standard/sipeedm1.h
new file mode 100644
index 0000000..3274978
--- /dev/null
+++ b/variants/standard/sipeedm1.h
@@ -0,0 +1,69 @@
+#ifndef _VARIANT_SIPEED_M1_DOCK
+#define _VARIANT_SIPEED_M1_DOCK
+
+#include <stdint.h>
+
+#define RISCV
+#include "platform.h"
+
+#include "Arduino.h"
+
+
+/* BOARD  PIN DEFINE */
+/* LEDs */
+#define PIN_LED_GREEN        13
+#define PIN_LED_BLUE         12
+#define PIN_LED_RED          14
+#define PIN_LED              13
+#define LED_BUILTIN          13
+/* KEY */
+#define KEY0                 16
+/*  UART */
+#define RX0                   4
+#define TX0                   5
+/* MIC ARRAY */
+#define MIC_BCK              18
+#define MIC_WS               19
+#define MIC_DAT3             20
+#define MIC_DAT2             21
+#define MIC_DAT1             22
+#define MIC_DAT0             23
+#define MIC_LED_DAT          24
+/* SPI0 */
+#define SPI0_CS1             25
+#define SPI0_MISO            26
+#define SPI0_SCLK            27
+#define SPI0_MOSI            28
+#define SPI0_CS0             29
+/* I2S */
+#define MIC0_WS              30
+#define MIC0_DATA            31
+#define MIC0_BCK             32
+#define I2S_WS               33
+#define I2S_DA               34
+#define I2S_BCK              35
+/* LCD */
+#define LCD_CS               36
+#define LCD_RST              37
+#define LCD_DC               38
+#define LCD_WR               39
+
+static const uint8_t RX = RX0;
+static const uint8_t TX = TX0;
+
+static const uint8_t SDA = 10;
+static const uint8_t SCL =  9;
+
+static const uint8_t SS   = SPI0_CS0 ;
+static const uint8_t MOSI = SPI0_MOSI;
+static const uint8_t MISO = SPI0_MISO;
+static const uint8_t SCK  = SPI0_SCLK;
+
+#define VARIANT_NUM_GPIOHS (32)
+#define VARIANT_NUM_GPIO   ( 8)
+#define VARIANT_NUM_PWM    ( 3)
+#define VARIANT_NUM_I2C    ( 3)
+#define VARIANT_NUM_SPI    ( 3)
+#define VARIANT_NUM_UART   ( 3)
+
+#endif