【超低功耗STM32U5 IoT探索套件】U5超低功耗超高性能测试GPIO点灯（之二）

mameng 发表于 2021-10-22 21:46

本帖最后由 mameng 于 2021-10-22 21:46 编辑

STM32U5亮点STM32U5相对前面传统的STM32Lx系列低功耗MCU具有很多优异之处： 
其一：40nm工艺制程 
以前的STM32采用90nm工艺制程，此次STM32U5采用40nm工艺。 
越先进的工艺代表着功耗性能越好，这也是为什么STM32U5动态功耗可以低至 19μA/MHz 的原因。 
其二：主频160MHz以前STM32Lx系列低功耗MCU主频相对较低，STM32Lx系列中STM32L4+最高主频才120MHz。STM32U5拥有240个DMIPS和651个CoreMark得分的高性能。 
在产品功能越来越多、越来越丰富的今天，需要处理更多的事件，因此主频越高，代表其性能越高。 
其三：更强的FlashSTM32U5采用更高密度的晶体管，同时，采用更先进技术，使Flash寿命更长。STM32U5将支持高达4M Flash容量。











 

由于是最新处理器，所以有必要把ST生态工具全部升级最新版：STM32CubeProgrammer  2.8  ， STM32CubeMX-6.3.0-Win 6.3版本



STM32CubeMX生成的，使用STM32U5xx HAL API库. GPIO点灯的程序，程序相对于STM32F1系列几乎一样，不用太考虑寄存器差异，程序兼容性高

 



 

<pre>
<code>
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* 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_ICACHE_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
static void EXTI13_IRQHandler_Config(void);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
* <a href="home.php?mod=space&uid=159083" target="_blank">@brief</a> The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* STM32U5xx HAL library initialization:
 - Configure the Flash prefetch
 - Configure the Systick to generate an interrupt each 1 msec
 - Set NVIC Group Priority to 3
 - Low Level Initialization
*/
/* 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_ICACHE_Init();
/* USER CODE BEGIN 2 */
/* -1- Initialize LEDs mounted on B-U585I-IOT02A board */
BSP_LED_Init(LED7);

/* -2- Configure External line 13 (connected to PC.13 pin) in interrupt mode */
EXTI13_IRQHandler_Config();

/* USER CODE END 2 */

/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */

/* 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};

/** Configure the main internal regulator output voltage
*/
if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_4;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
RCC_OscInitStruct.PLL.PLLMBOOST = RCC_PLLMBOOST_DIV1;
RCC_OscInitStruct.PLL.PLLM = 1;
RCC_OscInitStruct.PLL.PLLN = 80;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 2;
RCC_OscInitStruct.PLL.PLLR = 2;
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLLVCIRANGE_0;
RCC_OscInitStruct.PLL.PLLFRACN = 0;
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_CLOCKTYPE_PCLK3;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
{
Error_Handler();
}
__HAL_RCC_PWR_CLK_DISABLE();
}

/**
* @brief ICACHE Initialization Function
* @param None
* @retval None
*/
static void MX_ICACHE_Init(void)
{

/* USER CODE BEGIN ICACHE_Init 0 */

/* USER CODE END ICACHE_Init 0 */

/* USER CODE BEGIN ICACHE_Init 1 */

/* USER CODE END ICACHE_Init 1 */
/** Enable instruction cache in 1-way (direct mapped cache)
*/
if (HAL_ICACHE_ConfigAssociativityMode(ICACHE_1WAY) != HAL_OK)
{
Error_Handler();
}
if (HAL_ICACHE_Enable() != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ICACHE_Init 2 */

/* USER CODE END ICACHE_Init 2 */

}

/* USER CODE BEGIN 4 */
/**
* @briefConfigures EXTI line 13 (connected to PC.13 pin) in interrupt mode
* @paramNone
* @retval None
*/
static void EXTI13_IRQHandler_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;

/* Enable GPIOC clock */
__HAL_RCC_GPIOC_CLK_ENABLE();

/* Configure PC.13 pin as input floating */
GPIO_InitStructure.Mode = GPIO_MODE_IT_FALLING;

GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Pin = BUTTON_USER_PIN;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

/* Enable and set line 13 Interrupt to the lowest priority */
HAL_NVIC_SetPriority(EXTI13_IRQn, 2, 0);
HAL_NVIC_EnableIRQ(EXTI13_IRQn);
}

/**
* @brief EXTI line detection callbacks
* @param GPIO_Pin: Specifies the pins connected EXTI line
* @retval None
*/
void HAL_GPIO_EXTI_Falling_Callback(uint16_t GPIO_Pin)
{
if (GPIO_Pin == BUTTON_USER_PIN)
{
/* Toggle LED7 */
BSP_LED_Toggle(LED7);
}
}
/* USER CODE END 4 */

/**
* @briefThis 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 */
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}

#ifdefUSE_FULL_ASSERT
/**
* @briefReports the name of the source file and the source line number
* where the assert_param error has occurred.
* @paramfile: pointer to the source file name
* @paramline: 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,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

/* Infinite loop */
while (1)
{
}
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
</code></pre>

Jacktang 发表于 2021-10-23 09:50

低功耗是芯片发展的趋势

STM32U5动态功耗可以低至 19μA/MHz ，这在前几年的芯片还是一种理想呢

页: [1]

电子工程世界-论坛's Archiver

【超低功耗STM32U5 IoT探索套件】U5超低功耗超高性能测试GPIO点灯（之二）