1、打开之前我们导入到VisualStudio的Keil工程。
2、添加我们之前提到的GPIO简化类。
3、添加一个App类，在该类完成各种控制。
4、由于我们的工程外设硬件可能需要后续添加删除，初始化代码手动修改太麻烦，而且容易出错，因此CubeMX软件修改，所以主文件我还是建议使用 main.c文件。但是如果这样做就存在一个问题：C++是C的超集，可以在C++中自由使用C的函数，但是反之就不行了，main.c调用不了C++。因此，我们还要把App类，做一个C包装，供 main.c文件调用。
注意：虽然感觉就做了这么一点点的事，却搞了这么多东西，给人的感觉很繁琐，但是代码量大，控制复杂的时候，就可以体现出这样做的好处了。
下面就是我的代码：
Register.h
#pragma once
#include "stm32f1xx_hal.h"
namespace FRAM
{
class GPIO_Out
{
public:
void Link(GPIO_TypeDef* pPort, uint16_t Pin);
void operator =(const uint16_t & Value);
private:
GPIO_TypeDef* m_PORT = nullptr;
uint16_t m_PIN = 0x0000;
};
class GPIO_In
{
public:
void Link(GPIO_TypeDef* pPort, uint16_t Pin);
bool operator ()();
private:
GPIO_TypeDef* m_PORT = nullptr;
uint16_t m_PIN = 0x0000;
};
};Register.cpp
#include "Register.h"
namespace FRAM
{
void GPIO_Out::Link(GPIO_TypeDef* pPort, uint16_t Pin)
{
m_PORT = pPort;
m_PIN = Pin;
}
void GPIO_Out::operator=(const uint16_t & Value)
{
HAL_GPIO_WritePin(m_PORT, m_PIN, static_cast<GPIO_PinState>(Value));
}
void GPIO_In::Link(GPIO_TypeDef* pPort, uint16_t Pin)
{
m_PORT = pPort;
m_PIN = Pin;
}
bool GPIO_In::operator()()
{
return (m_PORT->IDR & m_PIN) > 0;
}
};
App.h
#pragma once
#include "Register.h"
namespace FRAM
{
class App
{
public:
void Init(GPIO_TypeDef* LedPort, uint16_t LedPin, GPIO_TypeDef* ButtonPort, uint16_t ButtonPin);
void Run();
private:
GPIO_Out LED;
GPIO_In BUTTON;
};
};
App.cpp
#include "App.h"
namespace FRAM
{
void App::Init(GPIO_TypeDef* LedPort, uint16_t LedPin, GPIO_TypeDef* ButtonPort, uint16_t ButtonPin)
{
LED.Link(LedPort, LedPin);
BUTTON.Link(ButtonPort, ButtonPin);
}
void App::Run()
{
static uint16_t sta = 0;
if (BUTTON())
{
LED = sta;
sta = !(sta);
}
}
};
AppWrapper.h
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32f1xx_hal.h"
void App_Init(GPIO_TypeDef* LedPort, uint16_t LedPin, GPIO_TypeDef* ButtonPort, uint16_t ButtonPin);
void App_Run();
#ifdef __cplusplus
}
#endifAppWrapper.cpp
#include "AppWrapper.h"
#include "Register.h"
#include "App.h"
static FRAM::App app;
void App_Init(GPIO_TypeDef* LedPort, uint16_t LedPin, GPIO_TypeDef* ButtonPort, uint16_t ButtonPin)
{
app.Init(LedPort, LedPin, ButtonPort, ButtonPin);
}
void App_Run()
{
app.Run();
}
main.c
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
** This notice applies to any and all portions of this file
* that are not between comment pairs USER CODE BEGIN and
* USER CODE END. Other portions of this file, whether
* inserted by the user or by software development tools
* are owned by their respective copyright owners.
*
* COPYRIGHT(c) 2018 STMicroelectronics
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "AppWrapper.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
/* USER CODE BEGIN 2 */
App_Init(LED_GPIO_Port, LED_Pin, BUTTON_GPIO_Port, BUTTON_Pin);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
App_Run();
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
/**Enables the Clock Security System
*/
HAL_RCC_EnableCSS();
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(LED_GPIO_Port, LED_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin : LED_Pin */
GPIO_InitStruct.Pin = LED_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(LED_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : BUTTON_Pin */
GPIO_InitStruct.Pin = BUTTON_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(BUTTON_GPIO_Port, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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