feat: ll lib option

Examples/Raw_LL/GPIO/LED_Toggle/main.c

@@ -0,0 +1,130 @@
+/**
+  ******************************************************************************
+  * @file    main.c
+  * @author  MCU Application Team
+  * @brief   Main program body
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * 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 "py32f003xx_ll_Start_Kit.h"
+
+/* Private define ------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private user code ---------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+static void APP_SystemClockConfig(void);
+static void APP_GpioConfig(void);
+
+/**
+  * @brief  应用程序入口函数.
+  * @retval int
+  */
+int main(void)
+{
+  /* 配置系统时钟 */
+  APP_SystemClockConfig();
+
+  /* 初始化GPIO */
+  APP_GpioConfig();
+
+  while (1)
+  {
+    /* LED灯闪烁 */
+    LL_mDelay(500);
+    LL_GPIO_TogglePin(GPIOB,LL_GPIO_PIN_5);
+  }
+}
+
+/**
+  * @brief  系统时钟配置函数
+  * @param  无
+  * @retval 无
+  */
+static void APP_SystemClockConfig(void)
+{
+  /* 使能HSI */
+  LL_RCC_HSI_Enable();
+  while(LL_RCC_HSI_IsReady() != 1)
+  {
+  }
+
+  /* 设置 AHB 分频*/
+  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
+
+  /* 配置HSISYS作为系统时钟源 */
+  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSISYS);
+  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSISYS)
+  {
+  }
+
+  /* 设置 APB1 分频*/
+  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
+  LL_Init1msTick(8000000);
+
+  /* 更新系统时钟全局变量SystemCoreClock(也可以通过调用SystemCoreClockUpdate函数更新) */
+  LL_SetSystemCoreClock(8000000);
+}
+
+/**
+  * @brief  配置GPIO
+  * @param  无
+  * @retval 无
+  */
+static void APP_GpioConfig(void)
+{
+  /* 使能时钟 */
+  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
+
+  /* 将PA5引脚配置为输出 */
+  LL_GPIO_SetPinMode(GPIOB, LL_GPIO_PIN_5, LL_GPIO_MODE_OUTPUT);
+}
+
+/**
+  * @brief  错误执行函数
+  * @param  无
+  * @retval 无
+  */
+void APP_ErrorHandler(void)
+{
+  /* 无限循环 */
+  while (1)
+  {
+  }
+}
+
+#ifdef  USE_FULL_ASSERT
+/**
+  * @brief  输出产生断言错误的源文件名及行号
+  * @param  file：源文件名指针
+  * @param  line：发生断言错误的行号
+  * @retval 无
+  */
+void assert_failed(uint8_t *file, uint32_t line)
+{
+  /* 用户可以根据需要添加自己的打印信息,
+     例如: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
+  /* 无限循环 */
+  while (1)
+  {
+  }
+}
+#endif /* USE_FULL_ASSERT */
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/

Examples/Raw_LL/GPIO/LED_Toggle/main.h

@@ -0,0 +1,59 @@
+/**
+  ******************************************************************************
+  * @file    main.h
+  * @author  MCU Application Team
+  * @brief   Header for main.c file.
+  *          This file contains the common defines of the application.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * 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"
+
+#if defined(USE_FULL_ASSERT)
+#include "py32_assert.h"
+#endif /* USE_FULL_ASSERT */
+
+/* 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******************/

Examples/Raw_LL/GPIO/LED_Toggle/py32_assert.h

@@ -0,0 +1,59 @@
+/**
+  ******************************************************************************
+  * @file    py32_assert.h
+  * @brief   PY32 assert file.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * 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 __PY32_ASSERT_H
+#define __PY32_ASSERT_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#ifdef  USE_FULL_ASSERT
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Includes ------------------------------------------------------------------*/
+#include "stdint.h"
+
+/* Exported macro ------------------------------------------------------------*/
+
+/**
+  * @brief  The assert_param macro is used for function's parameters check.
+  * @param  expr: If expr is false, it calls assert_failed function
+  *         which reports the name of the source file and the source
+  *         line number of the call that failed.
+  *         If expr is true, it returns no value.
+  * @retval None
+  */
+ #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
+/* Exported functions ------------------------------------------------------- */
+  void assert_failed(uint8_t* file, uint32_t line);
+#else
+  #define assert_param(expr) ((void)0U)
+#endif /* USE_FULL_ASSERT */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __PY32_ASSERT_H */
+
+/************************ (C) COPYRIGHT Puya *****END OF FILE******************/

Examples/Raw_LL/GPIO/LED_Toggle/py32f0xx_it.c

@@ -0,0 +1,84 @@
+/**
+  ******************************************************************************
+  * @file    py32f0xx_it.c
+  * @author  MCU Application Team
+  * @brief   Interrupt Service Routines.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * 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******************/

Examples/Raw_LL/GPIO/LED_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
+  *
+  * <h2><center>&copy; Copyright (c) Puya Semiconductor Co.
+  * All rights reserved.</center></h2>
+  *
+  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
+  * All rights reserved.</center></h2>
+  *
+  * 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******************/

Libraries/BSP_LL/Inc/py32f003xx_ll_Start_Kit.h

@@ -110,32 +110,6 @@ typedef enum
 #define BUTTONx_GPIO_CLK_DISABLE(__INDEX__)     (((__INDEX__) == 0) ? USER_BUTTON_GPIO_CLK_DISABLE() : 0)
 
 
-//debug printf redirect config
-#define DEBUG_USART_BAUDRATE                    115200
-
-#define DEBUG_USART                             USART2
-#define DEBUG_USART_CLK_ENABLE()                LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2)
-
-#define __GPIOA_CLK_ENABLE()                    do { \
-                                                     __IO uint32_t tmpreg = 0x00U; \
-                                                     SET_BIT(RCC->IOPENR, RCC_IOPENR_GPIOAEN);\
-                                                     /* Delay after an RCC peripheral clock enabling */ \
-                                                     tmpreg = READ_BIT(RCC->IOPENR, RCC_IOPENR_GPIOAEN);\
-                                                     UNUSED(tmpreg); \
-                                                   } while(0U)
-
-#define DEBUG_USART_RX_GPIO_PORT                GPIOA
-#define DEBUG_USART_RX_GPIO_CLK_ENABLE()        LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA)
-#define DEBUG_USART_RX_PIN                      LL_GPIO_PIN_3
-#define DEBUG_USART_RX_AF                       LL_GPIO_AF_4
-
-#define DEBUG_USART_TX_GPIO_PORT                GPIOA
-#define DEBUG_USART_TX_GPIO_CLK_ENABLE()        LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA)
-#define DEBUG_USART_TX_PIN                      LL_GPIO_PIN_2
-#define DEBUG_USART_TX_AF                       LL_GPIO_AF_4
-
-#define DEBUG_USART_IRQHandler                  USART2_IRQHandler
-#define DEBUG_USART_IRQ                         USART2_IRQn
 /************************************************************/
 
 /** @defgroup Functions
@@ -153,7 +127,6 @@ void             BSP_PB_Init(Button_TypeDef Button, ButtonMode_TypeDef ButtonMod
 void             BSP_PB_DeInit(Button_TypeDef Button);
 uint32_t         BSP_PB_GetState(Button_TypeDef Button);
 
-void             BSP_USART_Config(void);
 /**
   * @}
   */

Libraries/BSP_LL/Inc/py32f0xx_bsp_printf.h

@@ -0,0 +1,69 @@
+/**
+  ******************************************************************************
+  * @file    py32f0xx_bsp_printf.h
+  * @author  MCU Application Team
+  * @brief   
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef PY32F003_BSP_PRINTF_H
+#define PY32F003_BSP_PRINTF_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include <stdio.h>
+#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"
+#include "py32f0xx_ll_usart.h"
+
+
+
+
+//debug printf redirect config
+#define DEBUG_USART_BAUDRATE                    115200
+
+#define DEBUG_USART                             USART2
+#define DEBUG_USART_CLK_ENABLE()                LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2)
+
+#define __GPIOA_CLK_ENABLE()                    do { \
+                                                     __IO uint32_t tmpreg = 0x00U; \
+                                                     SET_BIT(RCC->IOPENR, RCC_IOPENR_GPIOAEN);\
+                                                     /* Delay after an RCC peripheral clock enabling */ \
+                                                     tmpreg = READ_BIT(RCC->IOPENR, RCC_IOPENR_GPIOAEN);\
+                                                     UNUSED(tmpreg); \
+                                                   } while(0U)
+
+#define DEBUG_USART_RX_GPIO_PORT                GPIOA
+#define DEBUG_USART_RX_GPIO_CLK_ENABLE()        LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA)
+#define DEBUG_USART_RX_PIN                      LL_GPIO_PIN_3
+#define DEBUG_USART_RX_AF                       LL_GPIO_AF_4
+
+#define DEBUG_USART_TX_GPIO_PORT                GPIOA
+#define DEBUG_USART_TX_GPIO_CLK_ENABLE()        LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA)
+#define DEBUG_USART_TX_PIN                      LL_GPIO_PIN_2
+#define DEBUG_USART_TX_AF                       LL_GPIO_AF_4
+
+#define DEBUG_USART_IRQHandler                  USART2_IRQHandler
+#define DEBUG_USART_IRQ                         USART2_IRQn
+
+/************************************************************/
+
+void             BSP_USART_Config(void);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PY32F003_BSP_PRINTF_H */

Libraries/BSP_LL/Src/py32f003xx_ll_Start_Kit.c

@@ -197,90 +197,6 @@ uint32_t BSP_PB_GetState(Button_TypeDef Button)
   return LL_GPIO_IsInputPinSet(BUTTON_PORT[Button], BUTTON_PIN[Button]);
 }
 
-/**
-  * @brief  DEBUG_USART GPIO Config,Mode Config,115200 8-N-1
-  * @param  None
-  * @retval None
-  */
-void BSP_USART_Config(void)
-{
-  DEBUG_USART_CLK_ENABLE();
-
-  /* USART Init */
-  LL_USART_SetBaudRate(DEBUG_USART, SystemCoreClock, LL_USART_OVERSAMPLING_16, DEBUG_USART_BAUDRATE);
-  LL_USART_SetDataWidth(DEBUG_USART, LL_USART_DATAWIDTH_8B);
-  LL_USART_SetStopBitsLength(DEBUG_USART, LL_USART_STOPBITS_1);
-  LL_USART_SetParity(DEBUG_USART, LL_USART_PARITY_NONE);
-  LL_USART_SetHWFlowCtrl(DEBUG_USART, LL_USART_HWCONTROL_NONE);
-  LL_USART_SetTransferDirection(DEBUG_USART, LL_USART_DIRECTION_TX_RX);
-  LL_USART_Enable(DEBUG_USART);
-  LL_USART_ClearFlag_TC(DEBUG_USART);
-
-  /**USART GPIO Configuration
-    PA2     ------> USART1_TX
-    PA3     ------> USART1_RX
-    */
-  DEBUG_USART_RX_GPIO_CLK_ENABLE();
-  DEBUG_USART_TX_GPIO_CLK_ENABLE();
-
-  LL_GPIO_SetPinMode(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, LL_GPIO_MODE_ALTERNATE);
-  LL_GPIO_SetPinSpeed(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, LL_GPIO_SPEED_FREQ_VERY_HIGH);
-  LL_GPIO_SetPinPull(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, LL_GPIO_PULL_UP);
-  LL_GPIO_SetAFPin_0_7(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, DEBUG_USART_TX_AF);
-
-  LL_GPIO_SetPinMode(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, LL_GPIO_MODE_ALTERNATE);
-  LL_GPIO_SetPinSpeed(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, LL_GPIO_SPEED_FREQ_VERY_HIGH);
-  LL_GPIO_SetPinPull(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, LL_GPIO_PULL_UP);
-  LL_GPIO_SetAFPin_0_7(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, DEBUG_USART_RX_AF);
-}
-
-#if (defined (__CC_ARM)) || (defined (__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050))
-/**
-  * @brief  writes a character to the usart
-  * @param  ch
-  *         *f
-  * @retval the character
-  */
-int fputc(int ch, FILE *f)
-{
-  /* Send a byte to USART */
-  LL_USART_TransmitData8(DEBUG_USART, ch);
-  while (!LL_USART_IsActiveFlag_TC(DEBUG_USART));
-  LL_USART_ClearFlag_TC(DEBUG_USART);
-
-  return (ch);
-}
-
-/**
-  * @brief  get a character from the usart
-  * @param  *f
-  * @retval a character
-  */
-int fgetc(FILE *f)
-{
-  int ch;
-  while (!LL_USART_IsActiveFlag_RXNE(DEBUG_USART));
-  ch = LL_USART_ReceiveData8(DEBUG_USART);
-  return (ch);
-}
-
-#elif defined(__ICCARM__)
-/**
-  * @brief  writes a character to the usart
-  * @param  ch
-  *         *f
-  * @retval the character
-  */
-int putchar(int ch)
-{
-  /* Send a byte to USART */
-  LL_USART_TransmitData8(DEBUG_USART, ch);
-  while (!LL_USART_IsActiveFlag_TC(DEBUG_USART));
-  LL_USART_ClearFlag_TC(DEBUG_USART);
-
-  return (ch);
-}
-#endif
 
 //#endif
 /**

Libraries/BSP_LL/Src/py32f0xx_bsp_printf.c

@@ -0,0 +1,151 @@
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include "py32f0xx_bsp_printf.h"
+
+/**
+  * @brief  DEBUG_USART GPIO Config,Mode Config,115200 8-N-1
+  * @param  None
+  * @retval None
+  */
+void BSP_USART_Config(void)
+{
+  DEBUG_USART_CLK_ENABLE();
+
+  /* USART Init */
+  LL_USART_SetBaudRate(DEBUG_USART, SystemCoreClock, LL_USART_OVERSAMPLING_16, DEBUG_USART_BAUDRATE);
+  LL_USART_SetDataWidth(DEBUG_USART, LL_USART_DATAWIDTH_8B);
+  LL_USART_SetStopBitsLength(DEBUG_USART, LL_USART_STOPBITS_1);
+  LL_USART_SetParity(DEBUG_USART, LL_USART_PARITY_NONE);
+  LL_USART_SetHWFlowCtrl(DEBUG_USART, LL_USART_HWCONTROL_NONE);
+  LL_USART_SetTransferDirection(DEBUG_USART, LL_USART_DIRECTION_TX_RX);
+  LL_USART_Enable(DEBUG_USART);
+  LL_USART_ClearFlag_TC(DEBUG_USART);
+
+  /**USART GPIO Configuration
+    PA2     ------> USART1_TX
+    PA3     ------> USART1_RX
+    */
+  DEBUG_USART_RX_GPIO_CLK_ENABLE();
+  DEBUG_USART_TX_GPIO_CLK_ENABLE();
+
+  LL_GPIO_SetPinMode(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, LL_GPIO_MODE_ALTERNATE);
+  LL_GPIO_SetPinSpeed(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, LL_GPIO_SPEED_FREQ_VERY_HIGH);
+  LL_GPIO_SetPinPull(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, LL_GPIO_PULL_UP);
+  LL_GPIO_SetAFPin_0_7(DEBUG_USART_TX_GPIO_PORT, DEBUG_USART_TX_PIN, DEBUG_USART_TX_AF);
+
+  LL_GPIO_SetPinMode(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, LL_GPIO_MODE_ALTERNATE);
+  LL_GPIO_SetPinSpeed(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, LL_GPIO_SPEED_FREQ_VERY_HIGH);
+  LL_GPIO_SetPinPull(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, LL_GPIO_PULL_UP);
+  LL_GPIO_SetAFPin_0_7(DEBUG_USART_RX_GPIO_PORT, DEBUG_USART_RX_PIN, DEBUG_USART_RX_AF);
+}
+
+
+#if defined (__GNUC__) && !defined (__clang__)
+    #define GETCHAR_PROTOTYPE int __io_getchar (void)
+    #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
+#else
+    #define GETCHAR_PROTOTYPE int fgetc(FILE * f)
+    #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
+#endif
+
+/**
+  * @brief  retargets the c library printf function to the usart.
+  * @param  none
+  * @retval none
+  */
+PUTCHAR_PROTOTYPE
+{
+    /* Send a byte to USART */
+    LL_USART_TransmitData8(DEBUG_USART, ch);
+    while (!LL_USART_IsActiveFlag_TC(DEBUG_USART));
+    LL_USART_ClearFlag_TC(DEBUG_USART);
+
+    return (ch);
+}
+
+GETCHAR_PROTOTYPE
+{
+    int ch;
+    while (!LL_USART_IsActiveFlag_RXNE(DEBUG_USART));
+    ch = LL_USART_ReceiveData8(DEBUG_USART);
+    return (ch);
+}
+
+#if defined (__GNUC__) && !defined (__clang__)
+__attribute__((weak)) int _write(int file, char *ptr, int len)
+{
+    (void)file;
+    int DataIdx;
+    for (DataIdx = 0; DataIdx < len; DataIdx++)
+    {
+        __io_putchar(*ptr++);
+    }
+    return len;
+}
+#endif
+
+__attribute__((weak)) int _read(int file, char *ptr, int len)
+{
+    (void)file;
+    int DataIdx;
+    for (DataIdx = 0; DataIdx < len; DataIdx++)
+    {
+        *ptr++ = __io_getchar();
+    }
+    return len;
+}
+
+__attribute__((weak)) int _isatty(int fd)
+{
+    if (fd >= STDIN_FILENO && fd <= STDERR_FILENO)
+        return 1;
+
+    errno = EBADF;
+    return 0;
+}
+
+__attribute__((weak)) int _close(int fd)
+{
+    if (fd >= STDIN_FILENO && fd <= STDERR_FILENO)
+        return 0;
+
+    errno = EBADF;
+    return -1;
+}
+
+__attribute__((weak)) int _lseek(int fd, int ptr, int dir)
+{
+    (void)fd;
+    (void)ptr;
+    (void)dir;
+
+    errno = EBADF;
+    return -1;
+}
+
+__attribute__((weak)) int _fstat(int fd, struct stat *st)
+{
+    if (fd >= STDIN_FILENO && fd <= STDERR_FILENO)
+    {
+        st->st_mode = S_IFCHR;
+        return 0;
+    }
+
+    errno = EBADF;
+    return 0;
+}
+
+__attribute__((weak)) int _getpid(void)
+{
+  errno = ENOSYS;
+  return -1;
+}
+
+__attribute__((weak)) int _kill(pid_t pid, int sig)
+{
+    (void)pid;
+    (void)sig;
+    errno = ENOSYS;
+    return -1;
+}

Makefile

@@ -7,6 +7,8 @@ BUILD_DIR		= Build
 
 ##### Options #####
 
+# Use LL library instead of HAL
+USE_LL_LIB ?= y
 # Enable printf float %f support, y:yes, n:no
 ENABLE_PRINTF_FLOAT	?= n
 # Build with CMSIS DSP functions, y:yes, n:no
@@ -39,9 +41,7 @@ LIB_FLAGS       = PY32F003x8
 
 # C source folders
 CDIRS	:= User \
-		Libraries/CMSIS/Device/PY32F0xx/Source \
-		Libraries/PY32F0xx_HAL_Driver/Src \
-		Libraries/BSP/Src
+		Libraries/CMSIS/Device/PY32F0xx/Source
 # C source files (if there are any single ones)
 CFILES := 
 
@@ -53,10 +53,20 @@ AFILES	:= Libraries/CMSIS/Device/PY32F0xx/Source/gcc/startup_py32f003.s
 # Include paths
 INCLUDES	:= Libraries/CMSIS/Include \
 			Libraries/CMSIS/Device/PY32F0xx/Include \
-			Libraries/PY32F0xx_HAL_Driver/Inc \
-			Libraries/BSP/Inc \
 			User
 
+ifeq ($(USE_LL_LIB),y)
+CDIRS		+= Libraries/PY32F0xx_LL_Driver/Src \
+		Libraries/BSP_LL/Src
+INCLUDES	+= Libraries/PY32F0xx_LL_Driver/Inc \
+		Libraries/BSP_LL/Inc
+else
+CDIRS		+= Libraries/PY32F0xx_HAL_Driver/Src \
+		Libraries/BSP/Src
+INCLUDES	+= Libraries/PY32F0xx_HAL_Driver/Inc \
+		Libraries/BSP/Inc
+endif
+
 ifeq ($(USE_DSP),y)
 LIB_FLAGS	+= ARM_MATH_CM0PLUS
 CDIRS 		+= Libraries/CMSIS/DSP_Lib/Source/BasicMathFunctions \