Of course,
I use CubeMX to configurate the pins as u can see in the first picture.
And here is my code:
- main
- hx711.c
- hx711.h
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2019 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
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "dma.h"
#include "usart.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "hx711.h"
#include "string.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 */
volatile int meres =0;
volatile int meresAtlag =0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(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 */
HX711 hx11;
hx11.gpioSck = HS711SCK_GPIO_Port;
hx11.gpioData = HX711OUTPUT_GPIO_Port;
hx11.pinSck = HS711SCK_Pin;
hx11.pinData = HX711OUTPUT_Pin;
hx11.offset = 0;
hx11.gain = 64;
/* 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();
MX_DMA_Init();
/* USER CODE BEGIN 2 */
HX711_Init(hx11);
uint8_t masage[100];
//uint8_t times = 4;
//uint8_t times = 4;
//meresAtlag = HX711_AverageValue(hx11, times);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
meres = HX711_Value(hx11);
//meres = HX711_AverageValue(hx11, times);
HAL_Delay(500);
HAL_UART_Transmit(&huart2, masage, sprintf(masage,"%d\n\r", meres),1000);
/* 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};
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL16;
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();
}
}
/* 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****/#include "hx711.h"
void HX711_Init(HX711 data)
{
// GPIO_InitTypeDef GPIO_InitStruct;
// GPIO_InitStruct.Pin = data.pinSck;
// GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
// GPIO_InitStruct.Pull = GPIO_NOPULL;
// GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
// HAL_GPIO_Init(data.gpioSck, &GPIO_InitStruct);
//
// GPIO_InitStruct.Pin = data.pinData;
// GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
// GPIO_InitStruct.Pull = GPIO_PULLUP;
// GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
// HAL_GPIO_Init(data.gpioData, &GPIO_InitStruct);
HAL_GPIO_WritePin(data.gpioSck, data.pinSck, GPIO_PIN_SET);
HAL_Delay(50);
HAL_GPIO_WritePin(data.gpioData, data.pinSck, GPIO_PIN_RESET);
}
int HX711_Average_Value(HX711 data, uint8_t times)
{
int sum = 0;
for (int i = 0; i < times; i++)
{
sum += HX711_Value(data);
}
return sum / times;
}
int HX711_Value(HX711 data)
{
int buffer;
buffer = 0;
while (HAL_GPIO_ReadPin(data.gpioData, data.pinData)==1)
;
for (uint8_t i = 0; i < 24; i++)
{
HAL_GPIO_WritePin(data.gpioSck, data.pinSck, GPIO_PIN_SET);
buffer = buffer << 1 ;
if (HAL_GPIO_ReadPin(data.gpioData, data.pinData))
{
buffer ++;
}
HAL_GPIO_WritePin(data.gpioSck, data.pinSck, GPIO_PIN_RESET);
}
for (int i = 0; i < data.gain; i++)
{
HAL_GPIO_WritePin(data.gpioSck, data.pinSck, GPIO_PIN_SET);
HAL_GPIO_WritePin(data.gpioSck, data.pinSck, GPIO_PIN_RESET);
}
buffer = buffer ^ 0x800000;
return buffer;
}
HX711 HX711_Tare(HX711 data, uint8_t times)
{
int sum = HX711_Average_Value(data, times);
data.offset = sum;
return data;
}
#ifndef HX711_H_
#define HX711_H_
//#include "stm32f3xx_hal.h"
#include "main.h"
typedef struct _hx711
{
GPIO_TypeDef* gpioSck;
GPIO_TypeDef* gpioData;
uint16_t pinSck;
uint16_t pinData;
int offset;
int gain;
// 1: channel A, gain factor 128
// 2: channel B, gain factor 32
// 3: channel A, gain factor 64
} HX711;
void HX711_Init(HX711 data);
HX711 HX711_Tare(HX711 data, uint8_t times);
int HX711_Value(HX711 data);
int HX711_AverageValue(HX711 data, uint8_t times);
#endif /* HX711_H_ */And it retuns 8388608 in the meres variable.
:(
Thanks for helping me!
