diff --git a/examples/PikaStdDevice/soft_tim.py b/examples/PikaStdDevice/soft_tim.py
index f2b96cbd0..c007f16ce 100644
--- a/examples/PikaStdDevice/soft_tim.py
+++ b/examples/PikaStdDevice/soft_tim.py
@@ -5,6 +5,8 @@ tim = Timer()
 cb_times = 0
 def cb_test(signal):
     global cb_times
+    if cb_times > 0:
+        return
     cb_times += 1
     print("cb_test: signal = %d, cb_times = %d" % (signal, cb_times))
 
@@ -14,7 +16,8 @@ tim.setPeriod(100) # 100ms
 tim.enable()
 
 while True:
-    time.sleep(0.1)
-    if cb_times >= 3:
+    time.sleep(1)
+    print("cb_times = %d" % cb_times)
+    if cb_times >= 1:
         tim.close()
         break
diff --git a/package/PikaStdDevice/PikaStdDevice_ADC.c b/package/PikaStdDevice/PikaStdDevice_ADC.c
index 2749d909c..4584dd7bb 100644
--- a/package/PikaStdDevice/PikaStdDevice_ADC.c
+++ b/package/PikaStdDevice/PikaStdDevice_ADC.c
@@ -27,7 +27,7 @@ void PikaStdDevice_ADC_setPin(PikaObj* self, char* pin) {
 }
 
 static pika_dev* _get_dev(PikaObj* self) {
-    pika_dev* dev = obj_getPtr(self, "pika_dev");
+    pika_dev* dev = PIKA_HAL_OBJ2DEV(self);
     if (NULL != dev) {
         return dev;
     }
diff --git a/package/PikaStdDevice/PikaStdDevice_BaseDev.c b/package/PikaStdDevice/PikaStdDevice_BaseDev.c
index 8c86c7f2f..9972246f1 100644
--- a/package/PikaStdDevice/PikaStdDevice_BaseDev.c
+++ b/package/PikaStdDevice/PikaStdDevice_BaseDev.c
@@ -15,8 +15,7 @@ void PikaStdDevice_BaseDev_addEventCallback(PikaObj* self, Arg* eventCallBack) {
     }
     if (PIKA_RES_OK != obj_runNativeMethod(self, "platformGetEventId", NULL)) {
         obj_setErrorCode(self, 1);
-        __platform_printf("Error: Method %s no found.\r\n",
-                          "platformGetEventId");
+        obj_setSysOut(self, "Error: Method %s no found.", "platformGetEventId");
     }
     uint32_t eventId = obj_getInt(self, "eventId");
     pika_eventListener_registEventCallback(g_pika_device_event_listener,
diff --git a/package/PikaStdDevice/PikaStdDevice_DAC.c b/package/PikaStdDevice/PikaStdDevice_DAC.c
index 6f8b833c6..0c441d6dc 100644
--- a/package/PikaStdDevice/PikaStdDevice_DAC.c
+++ b/package/PikaStdDevice/PikaStdDevice_DAC.c
@@ -2,7 +2,7 @@
 #include "PikaStdDevice_common.h"
 
 static pika_dev* _get_dev(PikaObj* self) {
-    pika_dev* dev = obj_getPtr(self, "pika_dev");
+    pika_dev* dev = PIKA_HAL_OBJ2DEV(self);
     if (NULL != dev) {
         return dev;
     }
diff --git a/package/PikaStdDevice/PikaStdDevice_GPIO.c b/package/PikaStdDevice/PikaStdDevice_GPIO.c
index 4d23b0174..7a9a6f6cf 100644
--- a/package/PikaStdDevice/PikaStdDevice_GPIO.c
+++ b/package/PikaStdDevice/PikaStdDevice_GPIO.c
@@ -80,7 +80,7 @@ void PikaStdDevice_GPIO_setPull(PikaObj* self, char* pull) {
 }
 
 static pika_dev* _get_dev(PikaObj* self) {
-    pika_dev* dev = obj_getPtr(self, "pika_dev");
+    pika_dev* dev = PIKA_HAL_OBJ2DEV(self);
     if (NULL != dev) {
         return dev;
     }
diff --git a/package/PikaStdDevice/PikaStdDevice_PWM.c b/package/PikaStdDevice/PikaStdDevice_PWM.c
index de93e8db7..82827f3f6 100644
--- a/package/PikaStdDevice/PikaStdDevice_PWM.c
+++ b/package/PikaStdDevice/PikaStdDevice_PWM.c
@@ -64,7 +64,7 @@ void PikaStdDevice_PWM_setFreq(PikaObj* self, int freq) {
 }
 
 static pika_dev* _get_dev(PikaObj* self) {
-    pika_dev* dev = obj_getPtr(self, "pika_dev");
+    pika_dev* dev = PIKA_HAL_OBJ2DEV(self);
     if (NULL != dev) {
         return dev;
     }
diff --git a/package/PikaStdDevice/PikaStdDevice_UART.c b/package/PikaStdDevice/PikaStdDevice_UART.c
index 2f388efb7..0db6eab00 100644
--- a/package/PikaStdDevice/PikaStdDevice_UART.c
+++ b/package/PikaStdDevice/PikaStdDevice_UART.c
@@ -92,7 +92,7 @@ void PikaStdDevice_UART_writeBytes(PikaObj* self, uint8_t* data, int length) {
 }
 
 static pika_dev* _get_dev(PikaObj* self) {
-    pika_dev* dev = obj_getPtr(self, "pika_dev");
+    pika_dev* dev = PIKA_HAL_OBJ2DEV(self);
     if (NULL != dev) {
         return dev;
     }
diff --git a/package/PikaStdDevice/pika_hal.c b/package/PikaStdDevice/pika_hal.c
index fa762d948..be9aac2e4 100644
--- a/package/PikaStdDevice/pika_hal.c
+++ b/package/PikaStdDevice/pika_hal.c
@@ -210,6 +210,7 @@ int pika_hal_GPIO_ioctl_merge_config(pika_hal_GPIO_config* dst,
                               PIKA_HAL_GPIO_EVENT_SIGNAL_RISING);
     _IOCTL_CONFIG_USE_DEFAULT(event_callback_ena,
                               PIKA_HAL_EVENT_CALLBACK_ENA_ENABLE);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -229,6 +230,7 @@ int pika_hal_UART_ioctl_merge_config(pika_hal_UART_config* dst,
     _IOCTL_CONFIG_USE_DEFAULT(RX, NULL);
     _IOCTL_CONFIG_USE_DEFAULT(RTS, NULL);
     _IOCTL_CONFIG_USE_DEFAULT(CTS, NULL);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -240,6 +242,7 @@ int pika_hal_SPI_ioctl_merge_config(pika_hal_SPI_config* dst,
     _IOCTL_CONFIG_USE_DEFAULT(data_width, PIKA_HAL_SPI_DATA_WIDTH_8);
     _IOCTL_CONFIG_USE_DEFAULT(speed, PIKA_HAL_SPI_SPEED_2M);
     _IOCTL_CONFIG_USE_DEFAULT(timeout, PIKA_HAL_SPI_TIMEOUT_1000MS);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -255,6 +258,7 @@ int pika_hal_SOFT_SPI_ioctl_merge_config(pika_hal_SOFT_SPI_config* dst,
     _IOCTL_CONFIG_USE_DEFAULT(SCK, NULL);
     _IOCTL_CONFIG_USE_DEFAULT(MOSI, NULL);
     _IOCTL_CONFIG_USE_DEFAULT(MISO, NULL);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -268,6 +272,7 @@ int pika_hal_IIC_ioctl_merge_config(pika_hal_IIC_config* dst,
     dst->mem_addr = src->mem_addr;
     _IOCTL_CONFIG_USE_DEFAULT(speed, PIKA_HAL_IIC_SPEED_100K);
     _IOCTL_CONFIG_USE_DEFAULT(timeout, PIKA_HAL_IIC_TIMEOUT_1000MS);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -283,6 +288,7 @@ int pika_hal_SOFT_IIC_ioctl_merge_config(pika_hal_SOFT_IIC_config* dst,
     dst->mem_addr = src->mem_addr;
     _IOCTL_CONFIG_USE_DEFAULT(speed, PIKA_HAL_IIC_SPEED_100K);
     _IOCTL_CONFIG_USE_DEFAULT(timeout, PIKA_HAL_IIC_TIMEOUT_1000MS);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -291,6 +297,7 @@ int pika_hal_PWM_ioctl_merge_config(pika_hal_PWM_config* dst,
     _IOCTL_CONFIG_USE_DEFAULT(period, PIKA_HAL_PWM_PERIOD_1MS * 10);
     // _IOCTL_CONFIG_USE_DEFAULT(duty, 0);
     dst->duty = src->duty;
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -301,6 +308,7 @@ int pika_hal_ADC_ioctl_merge_config(pika_hal_ADC_config* dst,
     _IOCTL_CONFIG_USE_DEFAULT(continue_or_single, PIKA_HAL_ADC_SINGLE);
     _IOCTL_CONFIG_USE_DEFAULT(vref, (pika_float)3.3);
     _IOCTL_CONFIG_USE_DEFAULT(max, 8192);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -310,6 +318,7 @@ int pika_hal_DAC_ioctl_merge_config(pika_hal_DAC_config* dst,
     _IOCTL_CONFIG_USE_DEFAULT(sampling_resolution, PIKA_HAL_DAC_RESOLUTION_12);
     _IOCTL_CONFIG_USE_DEFAULT(vref, (pika_float)3.3);
     _IOCTL_CONFIG_USE_DEFAULT(max, 3300000);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
@@ -321,6 +330,23 @@ int pika_hal_WIFI_ioctl_merge_config(pika_hal_WIFI_config* dst,
     _IOCTL_CONFIG_USE_DEFAULT_STR(ap_ssid, "pikapython.com");
     _IOCTL_CONFIG_USE_DEFAULT_STR(ap_bssid, "");
     _IOCTL_CONFIG_USE_DEFAULT_STR(ap_password, "pikapython.com");
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
+    return 0;
+}
+
+int pika_hal_SG_ioctl_merge_config(pika_hal_SG_config* dst,
+                                   pika_hal_SG_config* src) {
+    _IOCTL_CONFIG_USE_DEFAULT(waveform, PIKA_HAL_SG_WAVEFORM_SINE);
+    _IOCTL_CONFIG_USE_DEFAULT(frequency, 10);
+    _IOCTL_CONFIG_USE_DEFAULT(amplitude, 0.1);
+    dst->offset = src->offset;
+    dst->seconds = src->seconds;
+    _IOCTL_CONFIG_USE_DEFAULT(event_callback, NULL);
+    _IOCTL_CONFIG_USE_DEFAULT(event_callback_filter,
+                              PIKA_HAL_SG_EVENT_SIGNAL_ANY);
+    _IOCTL_CONFIG_USE_DEFAULT(event_callback_ena,
+                              PIKA_HAL_EVENT_CALLBACK_ENA_ENABLE);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
diff --git a/package/PikaStdDevice/pika_hal.h b/package/PikaStdDevice/pika_hal.h
index 443140018..b1404f053 100644
--- a/package/PikaStdDevice/pika_hal.h
+++ b/package/PikaStdDevice/pika_hal.h
@@ -11,6 +11,8 @@
 
 #define PIKA_HAL
 
+#define PIKA_HAL_OBJ2DEV(_self) obj_getPtr((_self), "pika_dev")
+
 typedef enum {
 #define PIKA_HAL_TABLE_DEV_TYPE
 #include "pika_hal_table.h"
@@ -89,6 +91,7 @@ typedef struct {
     void (*event_callback)(pika_dev* dev, PIKA_HAL_GPIO_EVENT_SIGNAL signal);
     PIKA_HAL_GPIO_EVENT_SIGNAL event_callback_filter;
     PIKA_HAL_EVENT_CALLBACK_ENA event_callback_ena;
+    void* user_data;
 } pika_hal_GPIO_config;
 
 typedef enum {
@@ -152,6 +155,7 @@ typedef struct {
     pika_dev* RX;
     pika_dev* RTS;
     pika_dev* CTS;
+    void* user_data;
 } pika_hal_UART_config;
 
 typedef uint32_t PIKA_HAL_IIC_SLAVE_ADDR;
@@ -213,6 +217,7 @@ typedef struct {
     PIKA_HAL_IIC_MEM_ADDR_SIZE mem_addr_size;
     PIKA_HAL_IIC_SPEED speed;
     PIKA_HAL_IIC_TIMEOUT timeout;
+    void* user_data;
 } pika_hal_IIC_config;
 
 typedef struct {
@@ -226,6 +231,7 @@ typedef struct {
     PIKA_HAL_IIC_MEM_ADDR_SIZE mem_addr_size;
     PIKA_HAL_IIC_SPEED speed;
     PIKA_HAL_IIC_TIMEOUT timeout;
+    void* user_data;
 } pika_hal_SOFT_IIC_config;
 
 typedef enum PIKA_HAL_SPI_TIMEOUT {
@@ -288,6 +294,7 @@ typedef struct {
     PIKA_HAL_SPI_DATA_WIDTH data_width;
     PIKA_HAL_SPI_SPEED speed;
     PIKA_HAL_SPI_TIMEOUT timeout;
+    void* user_data;
 } pika_hal_SPI_config;
 
 typedef struct {
@@ -301,6 +308,7 @@ typedef struct {
     pika_dev* SCK;
     pika_dev* MOSI;
     pika_dev* MISO;
+    void* user_data;
 } pika_hal_SOFT_SPI_config;
 
 typedef enum {
@@ -337,6 +345,7 @@ typedef struct {
     PIKA_HAL_ADC_CONTINUOU_OR_SINGLE continue_or_single;
     PIKA_HAL_ADC_MAX max;
     PIKA_HAL_ADC_VREF vref;
+    void* user_data;
 } pika_hal_ADC_config;
 
 typedef enum {
@@ -369,6 +378,7 @@ typedef struct pika_hal_DAC_config {
     PIKA_HAL_DAC_SPEED speed;
     PIKA_HAL_DAC_MAX max;
     PIKA_HAL_DAC_VREF vref;
+    void* user_data;
 } pika_hal_DAC_config;
 
 typedef enum {
@@ -400,6 +410,7 @@ typedef enum {
 typedef struct {
     PIKA_HAL_PWM_PERIOD period;
     PIKA_HAL_PWM_DUTY duty;
+    void* user_data;
 } pika_hal_PWM_config;
 
 typedef enum {
@@ -456,6 +467,7 @@ typedef struct pika_hal_WIFI_config {
     char ap_ssid[PIKA_HAL_WIFI_PARAM_MAX_LEN];
     char ap_bssid[PIKA_HAL_WIFI_PARAM_MAX_LEN];
     char ap_password[PIKA_HAL_WIFI_PARAM_MAX_LEN];
+    void* user_data;
 } pika_hal_WIFI_config;
 
 typedef struct pika_hal_WIFI_connect_config {
@@ -486,6 +498,7 @@ typedef struct pika_hal_WIFI_scan_result {
 } pika_hal_WIFI_scan_result;
 
 typedef enum {
+    _PIKA_HAL_PWM_PERIOD_UNUSED = 0,
     PIKA_HAL_TIM_PERIOD_1NS = 1,
     PIKA_HAL_TIM_PERIOD_1US = 1000,
     PIKA_HAL_TIM_PERIOD_1MS = 1000000,
@@ -565,6 +578,35 @@ typedef struct pika_hal_CAM_config {
     int buff_len;
 } pika_hal_CAM_config;
 
+/* Signal Generator */
+
+typedef enum {
+    _PIKA_HAL_SG_WAVEFORM_UNUSED = 0,
+    PIKA_HAL_SG_WAVEFORM_SINE,
+    PIKA_HAL_SG_WAVEFORM_SQUARE,
+    PIKA_HAL_SG_WAVEFORM_TRIANGLE,
+} PIKA_HAL_SG_WAVEFORM;
+
+typedef enum {
+    _PIKA_HAL_SG_EVENT_SIGNAL_UNUSED = 0,
+    PIKA_HAL_SG_EVENT_SIGNAL_READY_FOR_OUTPUT,
+    PIKA_HAL_SG_EVENT_SIGNAL_ANY,
+} PIKA_HAL_SG_EVENT_SIGNAL;
+
+typedef struct {
+    PIKA_HAL_SG_WAVEFORM waveform;
+    pika_float frequency;  // Frequency in Hz
+    pika_float amplitude;  // Amplitude in Volts
+    pika_float offset;     // Offset in Volts
+    pika_float seconds;    // Seconds to output
+    void (*event_callback)(pika_dev* dev, PIKA_HAL_SG_EVENT_SIGNAL signal);
+    PIKA_HAL_SG_EVENT_SIGNAL event_callback_filter;
+    PIKA_HAL_EVENT_CALLBACK_ENA event_callback_ena;
+    void* user_data;
+} pika_hal_SG_config;
+
+/* impl typedef */
+
 typedef struct pika_dev_impl {
     int (*open)(pika_dev* dev, char* name);
     int (*close)(pika_dev* dev);
diff --git a/package/PikaStdDevice/pika_hal_table.h b/package/PikaStdDevice/pika_hal_table.h
index 55085c36c..aa76666d4 100644
--- a/package/PikaStdDevice/pika_hal_table.h
+++ b/package/PikaStdDevice/pika_hal_table.h
@@ -15,4 +15,4 @@ pika_hal_table_add(WIFI)
 pika_hal_table_add(TIM)
 pika_hal_table_add(SOFT_TIM)
 pika_hal_table_add(CAM)
-
+pika_hal_table_add(SG)
diff --git a/package/PikaStdDevice/pika_hal_table_rule.h b/package/PikaStdDevice/pika_hal_table_rule.h
index 51e14a90f..0874dc1ef 100644
--- a/package/PikaStdDevice/pika_hal_table_rule.h
+++ b/package/PikaStdDevice/pika_hal_table_rule.h
@@ -56,8 +56,7 @@
                 return pika_hal_platform_##dev_name##_ioctl_others(dev, cmd,   \
                                                                    arg);       \
         }                                                                      \
-    }
-
+    }                                                                          
 #endif
 
 #if defined(PIKA_HAL_TABLE_DEV_TYPE)
diff --git a/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.c b/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.c
index 9e933ab82..be9aac2e4 100644
--- a/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.c
+++ b/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.c
@@ -346,7 +346,7 @@ int pika_hal_SG_ioctl_merge_config(pika_hal_SG_config* dst,
                               PIKA_HAL_SG_EVENT_SIGNAL_ANY);
     _IOCTL_CONFIG_USE_DEFAULT(event_callback_ena,
                               PIKA_HAL_EVENT_CALLBACK_ENA_ENABLE);
-		_IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
+    _IOCTL_CONFIG_USE_DEFAULT(user_data, NULL);
     return 0;
 }
 
diff --git a/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.h b/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.h
index 443140018..b1404f053 100644
--- a/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.h
+++ b/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal.h
@@ -11,6 +11,8 @@
 
 #define PIKA_HAL
 
+#define PIKA_HAL_OBJ2DEV(_self) obj_getPtr((_self), "pika_dev")
+
 typedef enum {
 #define PIKA_HAL_TABLE_DEV_TYPE
 #include "pika_hal_table.h"
@@ -89,6 +91,7 @@ typedef struct {
     void (*event_callback)(pika_dev* dev, PIKA_HAL_GPIO_EVENT_SIGNAL signal);
     PIKA_HAL_GPIO_EVENT_SIGNAL event_callback_filter;
     PIKA_HAL_EVENT_CALLBACK_ENA event_callback_ena;
+    void* user_data;
 } pika_hal_GPIO_config;
 
 typedef enum {
@@ -152,6 +155,7 @@ typedef struct {
     pika_dev* RX;
     pika_dev* RTS;
     pika_dev* CTS;
+    void* user_data;
 } pika_hal_UART_config;
 
 typedef uint32_t PIKA_HAL_IIC_SLAVE_ADDR;
@@ -213,6 +217,7 @@ typedef struct {
     PIKA_HAL_IIC_MEM_ADDR_SIZE mem_addr_size;
     PIKA_HAL_IIC_SPEED speed;
     PIKA_HAL_IIC_TIMEOUT timeout;
+    void* user_data;
 } pika_hal_IIC_config;
 
 typedef struct {
@@ -226,6 +231,7 @@ typedef struct {
     PIKA_HAL_IIC_MEM_ADDR_SIZE mem_addr_size;
     PIKA_HAL_IIC_SPEED speed;
     PIKA_HAL_IIC_TIMEOUT timeout;
+    void* user_data;
 } pika_hal_SOFT_IIC_config;
 
 typedef enum PIKA_HAL_SPI_TIMEOUT {
@@ -288,6 +294,7 @@ typedef struct {
     PIKA_HAL_SPI_DATA_WIDTH data_width;
     PIKA_HAL_SPI_SPEED speed;
     PIKA_HAL_SPI_TIMEOUT timeout;
+    void* user_data;
 } pika_hal_SPI_config;
 
 typedef struct {
@@ -301,6 +308,7 @@ typedef struct {
     pika_dev* SCK;
     pika_dev* MOSI;
     pika_dev* MISO;
+    void* user_data;
 } pika_hal_SOFT_SPI_config;
 
 typedef enum {
@@ -337,6 +345,7 @@ typedef struct {
     PIKA_HAL_ADC_CONTINUOU_OR_SINGLE continue_or_single;
     PIKA_HAL_ADC_MAX max;
     PIKA_HAL_ADC_VREF vref;
+    void* user_data;
 } pika_hal_ADC_config;
 
 typedef enum {
@@ -369,6 +378,7 @@ typedef struct pika_hal_DAC_config {
     PIKA_HAL_DAC_SPEED speed;
     PIKA_HAL_DAC_MAX max;
     PIKA_HAL_DAC_VREF vref;
+    void* user_data;
 } pika_hal_DAC_config;
 
 typedef enum {
@@ -400,6 +410,7 @@ typedef enum {
 typedef struct {
     PIKA_HAL_PWM_PERIOD period;
     PIKA_HAL_PWM_DUTY duty;
+    void* user_data;
 } pika_hal_PWM_config;
 
 typedef enum {
@@ -456,6 +467,7 @@ typedef struct pika_hal_WIFI_config {
     char ap_ssid[PIKA_HAL_WIFI_PARAM_MAX_LEN];
     char ap_bssid[PIKA_HAL_WIFI_PARAM_MAX_LEN];
     char ap_password[PIKA_HAL_WIFI_PARAM_MAX_LEN];
+    void* user_data;
 } pika_hal_WIFI_config;
 
 typedef struct pika_hal_WIFI_connect_config {
@@ -486,6 +498,7 @@ typedef struct pika_hal_WIFI_scan_result {
 } pika_hal_WIFI_scan_result;
 
 typedef enum {
+    _PIKA_HAL_PWM_PERIOD_UNUSED = 0,
     PIKA_HAL_TIM_PERIOD_1NS = 1,
     PIKA_HAL_TIM_PERIOD_1US = 1000,
     PIKA_HAL_TIM_PERIOD_1MS = 1000000,
@@ -565,6 +578,35 @@ typedef struct pika_hal_CAM_config {
     int buff_len;
 } pika_hal_CAM_config;
 
+/* Signal Generator */
+
+typedef enum {
+    _PIKA_HAL_SG_WAVEFORM_UNUSED = 0,
+    PIKA_HAL_SG_WAVEFORM_SINE,
+    PIKA_HAL_SG_WAVEFORM_SQUARE,
+    PIKA_HAL_SG_WAVEFORM_TRIANGLE,
+} PIKA_HAL_SG_WAVEFORM;
+
+typedef enum {
+    _PIKA_HAL_SG_EVENT_SIGNAL_UNUSED = 0,
+    PIKA_HAL_SG_EVENT_SIGNAL_READY_FOR_OUTPUT,
+    PIKA_HAL_SG_EVENT_SIGNAL_ANY,
+} PIKA_HAL_SG_EVENT_SIGNAL;
+
+typedef struct {
+    PIKA_HAL_SG_WAVEFORM waveform;
+    pika_float frequency;  // Frequency in Hz
+    pika_float amplitude;  // Amplitude in Volts
+    pika_float offset;     // Offset in Volts
+    pika_float seconds;    // Seconds to output
+    void (*event_callback)(pika_dev* dev, PIKA_HAL_SG_EVENT_SIGNAL signal);
+    PIKA_HAL_SG_EVENT_SIGNAL event_callback_filter;
+    PIKA_HAL_EVENT_CALLBACK_ENA event_callback_ena;
+    void* user_data;
+} pika_hal_SG_config;
+
+/* impl typedef */
+
 typedef struct pika_dev_impl {
     int (*open)(pika_dev* dev, char* name);
     int (*close)(pika_dev* dev);
diff --git a/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal_table.h b/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal_table.h
index 55085c36c..aa76666d4 100644
--- a/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal_table.h
+++ b/port/linux/package/pikascript/pikascript-lib/PikaStdDevice/pika_hal_table.h
@@ -15,4 +15,4 @@ pika_hal_table_add(WIFI)
 pika_hal_table_add(TIM)
 pika_hal_table_add(SOFT_TIM)
 pika_hal_table_add(CAM)
-
+pika_hal_table_add(SG)
diff --git a/src/PikaVersion.h b/src/PikaVersion.h
index 187743f2d..2c6ff5043 100644
--- a/src/PikaVersion.h
+++ b/src/PikaVersion.h
@@ -2,4 +2,4 @@
 #define PIKA_VERSION_MINOR 12
 #define PIKA_VERSION_MICRO 7
 
-#define PIKA_EDIT_TIME "2023/10/22 12:57:51"
+#define PIKA_EDIT_TIME "2023/10/26 20:12:40"