STM32F103C8T6 驱动MTS4温度传感器

一、传感器介绍

        MTS4系列是数字模拟混合信号温度传感芯片，最高测温精度±0.1℃，用户无需进行校准。温度芯片感温原理基于CMOS半导体PN节温度与带隙电压的特性关系，经过小信号放大、模数转换、数字校准补偿后，数字总线输出，具有精度高、一致性好、测温快、功耗低、可编程配置灵活、寿命长等优点。
芯片内置16-bit ADC，分辨率0.004°C，具有-103°C到+153°C的超宽工作范围。芯片在出厂前经过100%的测试校准，根据温度误差特性进行校准系数的拟合，芯片内部自动进行补偿计算。芯片支持数字I2C通信接口、测温数据内存访问、功能配置等均可通过数字协议指令实现。I2C接口适合高速率的板级应用场景，最高接口速度可达2MHz。
芯片内置非易失性E2PROM存储单元，用于保存芯片ID号、高低温报警阈值、温度校准修正值以及用户自定义信息，如传感器节点编号、位置信息等。

二、驱动说明

        官方提供了IIC和单总线的驱动例程，但使用的MCU为MM32SPIN05，由于手上没有MM32SPIN05的开发板，所以将例程改为STM32F103的。

使用STM32CubeMX生成集成代码，基础代码包含USART1、GPIO、RCC，外设驱动库使用LL库。

三、硬件接口

SCL---PC6
SDA---PC7

UART_TX---PA9

LED---PC13

四、主代码

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "usart.h"
#include "gpio.h"
 
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "delay.h"
#include "T117_MTS4_I2C.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);
/* 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 */
	uint8_t status,Cfg;
  uint16_t Temp_u16;
	float Temp_f;
  /* USER CODE END 1 */
 
  /* MCU Configuration--------------------------------------------------------*/
 
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_AFIO);
  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
 
  /* System interrupt init*/
  NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
 
  /* SysTick_IRQn interrupt configuration */
  NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),15, 0));
 
  /** DISABLE: JTAG-DP Disabled and SW-DP Disabled
  */
  LL_GPIO_AF_DisableRemap_SWJ();
 
  /* USER CODE BEGIN Init */
 
  /* USER CODE END Init */
 
  /* Configure the system clock */
  SystemClock_Config();
 
  /* USER CODE BEGIN SysInit */
	SysTick_Init();
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
	printf("App start\n");
	printf("SystemCoreClock:%d\n", SystemCoreClock);
	uint8_t ID[8];
	if( MY_ReadID( ID ) == 0)
	{
		printf("MTS4:%02X%02X\n", ID[1], ID[0]);
	}
	
	if(T117I2C_Transmit(I2C_ADDR, EE_Cmd,0xB8)!= GPIOI2C_XFER_LASTACK)
	{
		PR("Recall FALSE\n");
	}
	delay_ms(2);
  MY_ReadStatusConfig( &status, &Cfg);
	PR("SC:%2X %2X\r\n",status,Cfg);	
  /* USER CODE END 2 */
 
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
 
    /* USER CODE BEGIN 3 */
		LL_GPIO_TogglePin(GPIOC, LL_GPIO_PIN_13);
	  if( MY_ConvertTemp()== 1)
		{
			delay_ms(tCon_A32);
			MY_ReadTempWaiting(&Temp_u16);
			Temp_f=MY_OutputtoTemp((int16_t)Temp_u16);
			PR("temp:%.2f\r\n",Temp_f);			
		}
 
	  delay_ms(980);
  }
  /* USER CODE END 3 */
}
 
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  LL_FLASH_SetLatency(LL_FLASH_LATENCY_0);
  while(LL_FLASH_GetLatency()!= LL_FLASH_LATENCY_0)
  {
  }
  LL_RCC_HSI_SetCalibTrimming(16);
  LL_RCC_HSI_Enable();
 
   /* Wait till HSI is ready */
  while(LL_RCC_HSI_IsReady() != 1)
  {
 
  }
  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
  LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSI);
 
   /* Wait till System clock is ready */
  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSI)
  {
 
  }
  LL_Init1msTick(8000000);
  LL_SetSystemCoreClock(8000000);
}
 
/* 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 */
  __disable_irq();
  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,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */