stm32l053r8t6做一个电子秤，编译软件用的IAR,但数码管示数闪烁，且颜色浅
当数码管显示物体重量的时候，后面的三位示数一直闪烁，0不会闪烁，而且看起来颜色很浅，几乎看不到，当重量超过1000g时，第一位的数字还是很清晰不会闪烁，求解答
/**
******************************************************************************
* @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) 2022 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.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32l0xx_hal.h"
/* USER CODE BEGIN Includes */
#include <stdio.h>
/* USER CODE END Includes */
/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart2;
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
#define HX711_GapValue 457.0
//static uint8_t fac_us = 0; //us延时倍乘数
unsigned long HX711_Real_Weight=0;
unsigned long Weight_Maopi=0;
unsigned long Weight_Shiwu = 0;
unsigned long Weight = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART2_UART_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/*void DIGITAL_out(unsigned char X) ;
void display(unsigned int n) ;*/
void DIGITAL_out(unsigned char X) ;
void display(unsigned long n);
void delay(void);
//void delay_Init(void) ;
//void delay_us(uint32_t nus);
unsigned long HX711_Read(void);
//void Get_Weight(void);
unsigned long Get_Weight(void);
/* USER CODE END PFP */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
*
* @retval None
*/
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();
MX_USART2_UART_Init();
/* USER CODE BEGIN 2 */
Weight_Maopi = HX711_Read();
HAL_Delay(50);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
Weight = Get_Weight();
display(Weight);
/* 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;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInit;
/**Configure the main internal regulator output voltage
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSICalibrationValue = 0;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_5;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**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_MSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
/* USART2 init function */
static void MX_USART2_UART_Init(void)
{
huart2.Instance = USART2;
huart2.Init.BaudRate = 115200;
huart2.Init.WordLength = UART_WORDLENGTH_7B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_TX_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart2) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
}
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(CLK_GPIO_Port, CLK_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOA, LD2_Pin|DIO_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, SCLK_Pin|RCLK_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin : B1_Pin */
GPIO_InitStruct.Pin = B1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(B1_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : DT_Pin */
GPIO_InitStruct.Pin = DT_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
HAL_GPIO_Init(DT_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pin : CLK_Pin */
GPIO_InitStruct.Pin = CLK_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(CLK_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : LD2_Pin DIO_Pin */
GPIO_InitStruct.Pin = LD2_Pin|DIO_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pins : SCLK_Pin RCLK_Pin */
GPIO_InitStruct.Pin = SCLK_Pin|RCLK_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
/* Digital OUTPUT function */
void DIGITAL_out(unsigned char X)
{
unsigned char i;
for(i=8;i>=1;i--)
{
if (X&0x80) HAL_GPIO_WritePin(GPIOA, DIO_Pin, GPIO_PIN_SET);
else HAL_GPIO_WritePin(GPIOA,DIO_Pin, GPIO_PIN_RESET);
X<<=1;
HAL_GPIO_WritePin(GPIOB, SCLK_Pin, GPIO_PIN_RESET);
HAL_GPIO_WritePin(GPIOB, SCLK_Pin, GPIO_PIN_SET);
}
}
/* display function */
void display(unsigned long n)
{
static unsigned int thousand_bit, hundred_bit, ten_bit, single_bit;
const unsigned char *led_table; // 查表指针,指针使用
unsigned char i; //定义需要放在LED赋值前
unsigned char LED_0F[] =
{
0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0x8C,0xBF,0xC6,0xA1,0x86,0xFF,0xbf
};
thousand_bit = n / 1000;
hundred_bit = (n % 1000) / 100;
ten_bit = n % 1000 % 100 / 10;
single_bit = n % 10; //显示千位数
//显示第1位
led_table = LED_0F + single_bit; //LED_OF是首地址，LED[0]移动
i = *led_table;
DIGITAL_out(i);
DIGITAL_out(0x01); //位选
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_RESET); // RCLK = 0;
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_SET); // RCLK = 1;
//显示第2位
led_table = LED_0F + ten_bit;
i = *led_table;
DIGITAL_out(i);
DIGITAL_out(0x02);
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_RESET); // RCLK = 0;
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_SET); // RCLK = 1;
//显示第3位
led_table = LED_0F + hundred_bit;
i = *led_table;
DIGITAL_out(i);
DIGITAL_out(0x04);
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_RESET); // RCLK = 0;
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_SET); // RCLK = 1;
//显示第4位
led_table = LED_0F + thousand_bit;
i = *led_table;
DIGITAL_out(i);
DIGITAL_out(0x08);
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_RESET); // RCLK = 0;
HAL_GPIO_WritePin(GPIOB, RCLK_Pin, GPIO_PIN_SET); // RCLK = 1;
}
void delay(void)
{
for(int i=0;i<1;i++);
}
/* HX711_Read function */
unsigned long HX711_Read(void) //增益128
{
unsigned long count;
unsigned char i;
HAL_GPIO_WritePin(GPIOC, DT_Pin, GPIO_PIN_SET); // 拉低时钟引脚
delay();
HAL_GPIO_WritePin(GPIOC, CLK_Pin, GPIO_PIN_RESET); // 拉低时钟引脚
delay();
while(HAL_GPIO_ReadPin(GPIOC, DT_Pin));
//while(DT_Pin);
for( i=0;i<24;i++)
{
HAL_GPIO_WritePin(GPIOC, CLK_Pin, GPIO_PIN_SET); // 拉高时钟
delay();
count=count<<1;
HAL_GPIO_WritePin(GPIOC, CLK_Pin, GPIO_PIN_RESET);
delay();
if(HAL_GPIO_ReadPin(GPIOC, DT_Pin)) count++;
//if(DT_Pin) count++;
}
HAL_GPIO_WritePin(GPIOC, CLK_Pin, GPIO_PIN_SET);
delay();
count=count^0x800000;//第25个脉冲下降沿来时，转换数据
HAL_GPIO_WritePin(GPIOC, CLK_Pin, GPIO_PIN_RESET);
delay();
return count;
}
unsigned long Get_Weight(void)
{
HX711_Real_Weight = HX711_Read();
if(HX711_Real_Weight > Weight_Maopi)
{
Weight_Shiwu = HX711_Real_Weight;
Weight_Shiwu = Weight_Shiwu - Weight_Maopi;
Weight_Shiwu = (unsigned long)((float)Weight_Shiwu/HX711_GapValue);
}
return Weight_Shiwu;
}
void _Error_Handler(char *file, int line)
{
while(1)
{
}
/* 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****/
是不是你测量一次就刷新一次数码管？数码管刷新频率不要太高，可以多测几次取均值再刷新数码管
可以先直接用硬件点亮数码管，确认数码管没有问题。这个大概率是程序问题，具体是控制引脚上下拉是否一致，或者是否持续高电平需要测试下
可能是读取weight的时间太长，而读取重量的这段时间的显示位选的是0号位置，所以0号位置亮度高，其它几位因为被点亮的间隔长，所以就显得暗而且有闪烁感。建议在定时器中断里扫描LED，而不是在读取完后再扫描。
刚才又看了一下，可能不是读取重量花的时间长，而是因为你在各个位之间切换后停留的时间太短，读取重量相当于让0号位停留更长一点时间，所以更亮一些。
试一下main函数这样写会常亮还是闪一下就灭？我怀疑是display里出了问题，led可能是低电平点亮
Weight = Get_Weight();
display(Weight);
while (1)
{
}