没有开发包的下载
http://www.st.com/st-web-ui/static/active/en/st_prod_software_internet/resource/technical/software/firmware/stm32cubef4.zip
我去,我编辑半天了,刚才按错了,一下不见了。。。。
我要分楼层写了,大家不要介意。。。。。
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下载后解压出来,我解压到D盘了。打开如下位置,这个是最基础的IO测试,也就是传说中单片机的Hello world。
D:\STM32Cube_FW_F4_V1.8.0\Projects\STM32446E-Nucleo\Examples\GPIO\GPIO_IOToggle\MDK-ARM
打开工程。打开main.c。
- /**
- ******************************************************************************
- * [url=home.php?mod=space&uid=288409]@file[/url] GPIO/GPIO_IOToggle/Src/main.c
- * [url=home.php?mod=space&uid=187600]@author[/url] MCD Application Team
- * [url=home.php?mod=space&uid=895143]@version[/url] V1.0.0
- * [url=home.php?mod=space&uid=212281]@date[/url] 01-July-2015
- * [url=home.php?mod=space&uid=247401]@brief[/url] This example describes how to configure and use GPIOs through
- * the STM32F4xx HAL API.
- ******************************************************************************
- * @attention
- *
- * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
- *
- * 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.
- *
- ******************************************************************************
- */
- /* Includes ------------------------------------------------------------------*/
- #include "main.h"
- /** @addtogroup STM32F4xx_HAL_Examples
- * @{
- */
- /** @addtogroup GPIO_IOToggle
- * @{
- */
- /* Private typedef -----------------------------------------------------------*/
- /* Private define ------------------------------------------------------------*/
- /* Private macro -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- static GPIO_InitTypeDef GPIO_InitStruct;
- /* Private function prototypes -----------------------------------------------*/
- void SystemClock_Config(void);
- static void Error_Handler(void);
- /* Private functions ---------------------------------------------------------*/
- /**
- * @brief Main program
- * @param None
- * @retval None
- */
- int main(void)
- {
- /* STM32F4xx HAL library initialization:
- - Configure the Flash prefetch, instruction and Data caches
- - Configure the Systick to generate an interrupt each 1 msec
- - Set NVIC Group Priority to 4
- - Global MSP (MCU Support Package) initialization
- */
- HAL_Init();
-
- /* Configure the system clock to 180 MHz */
- SystemClock_Config();
-
- /*##-1- Enable GPIOA Clock (to be able to program the configuration registers) */
- __HAL_RCC_GPIOA_CLK_ENABLE();
-
- /*##-2- Configure PA05 IO in output push-pull mode to drive external LED ###*/
- GPIO_InitStruct.Pin = GPIO_PIN_5;
- GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
- GPIO_InitStruct.Pull = GPIO_PULLUP;
- GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
- HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
- /*##-3- Toggle PA05 IO in an infinite loop #################################*/
- while (1)
- {
- HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);
-
- /* Insert a 100ms delay */
- HAL_Delay(100);
- }
- }
- /**
- * @brief System Clock Configuration
- * The system Clock is configured as follows:
- * System Clock source = PLL (HSI)
- * SYSCLK(Hz) = 180000000
- * HCLK(Hz) = 180000000
- * AHB Prescaler = 1
- * APB1 Prescaler = 4
- * APB2 Prescaler = 2
- * HSI Frequency(Hz) = 16000000
- * PLL_M = 16
- * PLL_N = 360
- * PLL_P = 2
- * PLL_Q = 7
- * PLL_R = 6
- * VDD(V) = 3.3
- * Main regulator output voltage = Scale1 mode
- * Flash Latency(WS) = 5
- * @param None
- * @retval None
- */
- void SystemClock_Config(void)
- {
- RCC_ClkInitTypeDef RCC_ClkInitStruct;
- RCC_OscInitTypeDef RCC_OscInitStruct;
- HAL_StatusTypeDef ret = HAL_OK;
- /* Enable Power Control clock */
- __HAL_RCC_PWR_CLK_ENABLE();
-
- /* The voltage scaling allows optimizing the power consumption when the device is
- clocked below the maximum system frequency, to update the voltage scaling value
- regarding system frequency refer to product datasheet. */
- __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
-
- /* Enable HSI Oscillator and activate PLL with HSI as source */
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
- RCC_OscInitStruct.HSIState = RCC_HSI_ON;
- RCC_OscInitStruct.HSICalibrationValue = 0x10;
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
- RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
- RCC_OscInitStruct.PLL.PLLM = 16;
- RCC_OscInitStruct.PLL.PLLN = 360;
- RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
- RCC_OscInitStruct.PLL.PLLQ = 7;
- RCC_OscInitStruct.PLL.PLLR = 6;
- if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
- {
- Error_Handler();
- }
-
- /* Activate the OverDrive to reach the 180 MHz Frequency */
- ret = HAL_PWREx_EnableOverDrive();
- if(ret != HAL_OK)
- {
- while(1) { ; }
- }
- /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
- clocks dividers */
- RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
- RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
- RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
- RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
- RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
- if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
- {
- Error_Handler();
- }
- }
- /**
- * @brief This function is executed in case of error occurrence.
- * @param None
- * @retval None
- */
- static void Error_Handler(void)
- {
- while(1)
- {
- }
- }
- #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 can add his own implementation to report the file name and line number,
- ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
- /* Infinite loop */
- while (1)
- {
- }
- }
- #endif
- /**
- * @}
- */
- /**
- * @}
- */
- /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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