feat: ll pvd example

Examples/LL/PWR/PVD/main.c

@@ -0,0 +1,90 @@
+/**
+ * Power Voltage Detector(PVD) Demo
+*/
+#include "main.h"
+#include "py32f0xx_bsp_clock.h"
+#include "py32f0xx_bsp_printf.h"
+
+static void APP_GPIO_Config(void);
+static void APP_ExtiConfig(void);
+static void APP_PVD_Config(void);
+
+int main(void)
+{
+  // Set HSI 24MHz as system clock source
+  BSP_RCC_HSI_24MConfig();
+  // Initialize UART on PA2:TX PA3:RX
+  BSP_USART_Config(115200);
+  printf("PY32F0 PVD Demo\r\nClock: %ld\r\n", SystemCoreClock);
+  // Set PB5 for LED output
+  APP_GPIO_Config();
+  // Set PB7 as analog input
+  APP_ExtiConfig();
+  APP_PVD_Config();
+  // Enable PVD
+  LL_PWR_EnablePVD();
+
+  while (1);
+}
+
+static void APP_GPIO_Config(void)
+{
+  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
+  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_OUTPUT);
+}
+
+static void APP_ExtiConfig(void)
+{
+  LL_GPIO_InitTypeDef GPIO_InitStruct;
+  LL_EXTI_InitTypeDef EXTI_InitStruct;
+
+  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
+
+  // PB7
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_7;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_ANALOG;
+  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
+  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
+  // Line 16 is for PVD output
+  EXTI_InitStruct.Line = LL_EXTI_LINE_16;
+  EXTI_InitStruct.LineCommand = ENABLE;
+  EXTI_InitStruct.Mode = LL_EXTI_MODE_IT;
+  EXTI_InitStruct.Trigger = LL_EXTI_TRIGGER_RISING_FALLING;
+  LL_EXTI_Init(&EXTI_InitStruct);
+}
+
+static void APP_PVD_Config(void)
+{
+  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
+  LL_PWR_SetPVDLevel(LL_PWR_PVDLEVEL_0);
+  LL_PWR_DisablePVDFilter();
+  LL_PWR_SetPVDFilter(LL_PWR_PVD_FILTER_1CLOCK);
+  // PB7
+  LL_PWR_SetPVDSource(LL_PWR_PVD_SOURCE_PB7);
+  NVIC_SetPriority(PVD_IRQn, 1);
+  NVIC_EnableIRQ(PVD_IRQn);
+}
+
+void PVD_IRQHandler(void)
+{
+  if (LL_PWR_IsActiveFlag_PVDO())
+  {
+    LL_GPIO_SetOutputPin(GPIOB, LL_GPIO_PIN_5);
+  }
+  else
+  {
+    LL_GPIO_ResetOutputPin(GPIOB, LL_GPIO_PIN_5);
+  }
+}
+
+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 */

Examples/LL/PWR/PVD/main.h

@@ -0,0 +1,28 @@
+#ifndef __MAIN_H
+#define __MAIN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "py32f0xx_ll_rtc.h"
+#include "py32f0xx_ll_bus.h"
+#include "py32f0xx_ll_cortex.h"
+#include "py32f0xx_ll_dma.h"
+#include "py32f0xx_ll_exti.h"
+#include "py32f0xx_ll_gpio.h"
+#include "py32f0xx_ll_lptim.h"
+#include "py32f0xx_ll_pwr.h"
+#include "py32f0xx_ll_rcc.h"
+#include "py32f0xx_ll_system.h"
+#include "py32f0xx_ll_tim.h"
+#include "py32f0xx_ll_utils.h"
+
+
+void APP_ErrorHandler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __MAIN_H */

Examples/LL/PWR/PVD/py32f0xx_it.c

@@ -0,0 +1,42 @@
+#include "main.h"
+#include "py32f0xx_it.h"
+
+extern void APP_TransferCompleteCallback(void);
+
+/**
+  * @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)
+{
+}

Examples/LL/PWR/PVD/py32f0xx_it.h

@@ -0,0 +1,18 @@
+#ifndef __PY32F0XX_IT_H
+#define __PY32F0XX_IT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+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 */