diff --git a/Examples/LL/GPIO/EXTI_Toggle/main.c b/Examples/LL/GPIO/EXTI_Toggle/main.c
new file mode 100644
index 0000000..0c423dd
--- /dev/null
+++ b/Examples/LL/GPIO/EXTI_Toggle/main.c
@@ -0,0 +1,95 @@
+/***
+ * Demo: EXTI Interrupt
+ */
+#include "main.h"
+#include "py32f0xx_bsp_button.h"
+#include "py32f0xx_bsp_led.h"
+#include "py32f0xx_bsp_printf.h"
+
+static void APP_SystemClockConfig(void);
+static void APP_GpioConfig(void);
+static void APP_ConfigureEXTI(void);
+
+
+int main(void)
+{
+ APP_SystemClockConfig();
+
+ APP_GpioConfig();
+ APP_ConfigureEXTI();
+
+ while (1);
+}
+
+static void APP_SystemClockConfig(void)
+{
+ LL_RCC_HSI_Enable();
+ while(LL_RCC_HSI_IsReady() != 1);
+
+ LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
+ LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSISYS);
+ while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSISYS);
+
+ LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
+ LL_Init1msTick(8000000);
+ LL_SetSystemCoreClock(8000000);
+}
+
+static void APP_GpioConfig(void)
+{
+ /* Enable GPIOB Clock */
+ LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
+ /* PB5 as output */
+ LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_OUTPUT);
+}
+
+static void APP_ConfigureEXTI(void)
+{
+ /* Enable GPIOA Clock */
+ LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
+
+ /* PA12 as input */
+ LL_GPIO_InitTypeDef GPIO_InitStruct;
+ GPIO_InitStruct.Pin = LL_GPIO_PIN_12;
+ GPIO_InitStruct.Mode = LL_GPIO_MODE_INPUT;
+ GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
+ LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+ /* Triggerred by falling edge */
+ LL_EXTI_InitTypeDef EXTI_InitStruct;
+ EXTI_InitStruct.Line = LL_EXTI_LINE_12;
+ EXTI_InitStruct.LineCommand = ENABLE;
+ EXTI_InitStruct.Mode = LL_EXTI_MODE_IT;
+ EXTI_InitStruct.Trigger = LL_EXTI_TRIGGER_FALLING;
+ LL_EXTI_Init(&EXTI_InitStruct);
+
+ /**
+ * Enable interrupt
+ * - EXTI0_1_IRQn for PA/PB/PC[0,1]
+ * - EXTI2_3_IRQn for PA/PB/PC[2,3]
+ * - EXTI4_15_IRQn for PA/PB/PC[4,15]
+ */
+ NVIC_SetPriority(EXTI4_15_IRQn, 0);
+ NVIC_EnableIRQ(EXTI4_15_IRQn);
+}
+
+void EXTI4_15_IRQHandler(void)
+{
+ if(LL_EXTI_IsActiveFlag(LL_EXTI_LINE_12))
+ {
+ LL_GPIO_TogglePin(GPIOB, LL_GPIO_PIN_5);
+ LL_EXTI_ClearFlag(LL_EXTI_LINE_12);
+ }
+}
+
+void APP_ErrorHandler(void)
+{
+ while (1);
+}
+
+#ifdef USE_FULL_ASSERT
+void assert_failed(uint8_t *file, uint32_t line)
+{
+ while (1);
+}
+#endif /* USE_FULL_ASSERT */
diff --git a/Examples/LL/GPIO/EXTI_Toggle/main.h b/Examples/LL/GPIO/EXTI_Toggle/main.h
new file mode 100644
index 0000000..d60c78f
--- /dev/null
+++ b/Examples/LL/GPIO/EXTI_Toggle/main.h
@@ -0,0 +1,55 @@
+/**
+ ******************************************************************************
+ * @file main.h
+ * @author MCU Application Team
+ * @brief Header for main.c file.
+ * This file contains the common defines of the application.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) Puya Semiconductor Co.
+ * All rights reserved.
+ *
+ * © Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __MAIN_H
+#define __MAIN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "py32f0xx_ll_rcc.h"
+#include "py32f0xx_ll_bus.h"
+#include "py32f0xx_ll_system.h"
+#include "py32f0xx_ll_exti.h"
+#include "py32f0xx_ll_cortex.h"
+#include "py32f0xx_ll_utils.h"
+#include "py32f0xx_ll_pwr.h"
+#include "py32f0xx_ll_dma.h"
+#include "py32f0xx_ll_gpio.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* Private defines -----------------------------------------------------------*/
+/* Exported variables prototypes ---------------------------------------------*/
+/* Exported functions prototypes ---------------------------------------------*/
+void APP_ErrorHandler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MAIN_H */
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
diff --git a/Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.c b/Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.c
new file mode 100644
index 0000000..2d2f6e3
--- /dev/null
+++ b/Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.c
@@ -0,0 +1,84 @@
+/**
+ ******************************************************************************
+ * @file py32f0xx_it.c
+ * @author MCU Application Team
+ * @brief Interrupt Service Routines.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) Puya Semiconductor Co.
+ * All rights reserved.
+ *
+ * © Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "py32f0xx_it.h"
+
+/* Private includes ----------------------------------------------------------*/
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private user code ---------------------------------------------------------*/
+/* External variables --------------------------------------------------------*/
+
+/******************************************************************************/
+/* Cortex-M0+ Processor Interruption and Exception Handlers */
+/******************************************************************************/
+/**
+ * @brief This function handles Non maskable interrupt.
+ */
+void NMI_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles Hard fault interrupt.
+ */
+void HardFault_Handler(void)
+{
+ while (1)
+ {
+ }
+}
+
+/**
+ * @brief This function handles System service call via SWI instruction.
+ */
+void SVC_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles Pendable request for system service.
+ */
+void PendSV_Handler(void)
+{
+}
+
+/**
+ * @brief This function handles System tick timer.
+ */
+void SysTick_Handler(void)
+{
+}
+
+/******************************************************************************/
+/* PY32F0xx Peripheral Interrupt Handlers */
+/* Add here the Interrupt Handlers for the used peripherals. */
+/* For the available peripheral interrupt handler names, */
+/* please refer to the startup file. */
+/******************************************************************************/
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
diff --git a/Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.h b/Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.h
new file mode 100644
index 0000000..633fddb
--- /dev/null
+++ b/Examples/LL/GPIO/EXTI_Toggle/py32f0xx_it.h
@@ -0,0 +1,49 @@
+/**
+ ******************************************************************************
+ * @file py32f0xx_it.h
+ * @author MCU Application Team
+ * @brief This file contains the headers of the interrupt handlers.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) Puya Semiconductor Co.
+ * All rights reserved.
+ *
+ * © Copyright (c) 2016 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __PY32F0XX_IT_H
+#define __PY32F0XX_IT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Private includes ----------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions prototypes ---------------------------------------------*/
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void SVC_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __PY32F0XX_IT_H */
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/