用MCP3001对ntc进行测温，并通过静态数码管显示出来

首先，需要连接MCP3001和静态数码管到单片机上。MCP3001的引脚连接如下：

- VDD：连接至单片机的3.3V电源
- VREF：连接至单片机的3.3V电源
- AGND：连接至单片机的GND
- CLK：连接至单片机的SCK引脚
- DOUT：连接至单片机的MISO引脚
- DIN：连接至单片机的MOSI引脚
- CS/SHDN：连接至单片机的任一数字引脚

静态数码管的引脚连接则需要根据具体型号进行设置。

接下来，需要编写代码进行温度测量和数码管显示。以下是一个示例代码：

#include <SPI.h>

// 定义MCP3001引脚
const int CS_PIN = 10;
const int CLK_PIN = 13;
const int DOUT_PIN = 12;
const int DIN_PIN = 11;

// 定义静态数码管引脚
const int DIGIT_1 = 2;
const int DIGIT_2 = 3;
const int DIGIT_3 = 4;
const int DIGIT_4 = 5;
const int SEG_A = 6;
const int SEG_B = 7;
const int SEG_C = 8;
const int SEG_D = 9;

// 定义NTC电阻分压电路参数
const float R1 = 10000.0; // 上拉电阻
const float VREF = 3.3; // 参考电压
const float NTC_R25 = 10000.0; // NTC在25℃时的电阻值
const float NTC_BETA = 3950.0; // NTC的B值

// 定义变量
float temp; // 温度值
int digit1Val, digit2Val, digit3Val, digit4Val; // 数码管显示值

void setup() {
  // 初始化SPI
  SPI.begin();
  SPI.setClockDivider(SPI_CLOCK_DIV8); // 设置SPI时钟频率为3.3MHz

  // 初始化静态数码管
  pinMode(DIGIT_1, OUTPUT);
  pinMode(DIGIT_2, OUTPUT);
  pinMode(DIGIT_3, OUTPUT);
  pinMode(DIGIT_4, OUTPUT);
  pinMode(SEG_A, OUTPUT);
  pinMode(SEG_B, OUTPUT);
  pinMode(SEG_C, OUTPUT);
  pinMode(SEG_D, OUTPUT);
}

void loop() {
  // 读取NTC电阻值
  int adcValue = readADC();

  // 计算温度值
  float rntc = R1 * (1023.0 / adcValue - 1.0);
  temp = 1.0 / (1.0 / (273.15 + 25.0) + log(rntc / NTC_R25) / NTC_BETA) - 273.15;

  // 转换为需要显示的数码管值
  digit1Val = (int)temp % 10;
  digit2Val = ((int)temp / 10) % 10;
  digit3Val = ((int)temp / 100) % 10;
  digit4Val = ((int)temp / 1000) % 10;

  // 数码管显示
  digitalWrite(DIGIT_1, LOW);
  digitalWrite(DIGIT_2, HIGH);
  digitalWrite(DIGIT_3, HIGH);
  digitalWrite(DIGIT_4, HIGH);
  displayDigit(digit1Val);
  delay(5);
  digitalWrite(DIGIT_1, HIGH);
  digitalWrite(DIGIT_2, LOW);
  digitalWrite(DIGIT_3, HIGH);
  digitalWrite(DIGIT_4, HIGH);
  displayDigit(digit2Val);
  delay(5);
  digitalWrite(DIGIT_1, HIGH);
  digitalWrite(DIGIT_2, HIGH);
  digitalWrite(DIGIT_3, LOW);
  digitalWrite(DIGIT_4, HIGH);
  displayDigit(digit3Val);
  delay(5);
  digitalWrite(DIGIT_1, HIGH);
  digitalWrite(DIGIT_2, HIGH);
  digitalWrite(DIGIT_3, HIGH);
  digitalWrite(DIGIT_4, LOW);
  displayDigit(digit4Val);
  delay(5);
}

// 读取MCP3001 ADC值
int readADC() {
  byte command = B11000000; // MCP3001单端输入模式
  digitalWrite(CS_PIN, LOW);
  SPI.transfer(command);
  int adcValue = SPI.transfer16(0) & B1111111111; // 只取10位数据
  digitalWrite(CS_PIN, HIGH);
  return adcValue;
}

// 数码管显示
void displayDigit(int digitVal) {
  switch(digitVal) {
    case 0:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, HIGH);
      break;
    case 1:
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, LOW);
      break;
    case 2:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, LOW);
      digitalWrite(SEG_D, HIGH);
      break;
    case 3:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, LOW);
      break;
    case 4:
      digitalWrite(SEG_A, LOW);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, HIGH);
      break;
    case 5:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, HIGH);
      break;
    case 6:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, LOW);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, HIGH);
      break;
    case 7:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, LOW);
      break;
    case 8:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, HIGH);
      break;
    case 9:
      digitalWrite(SEG_A, HIGH);
      digitalWrite(SEG_B, HIGH);
      digitalWrite(SEG_C, HIGH);
      digitalWrite(SEG_D, LOW);
      break;
  }
}

需要注意的是，NTC电阻分压电路的参数需要根据具体的电路设计进行设置。此外，代码中使用的是MCP3001单端输入模式，如果使用差分输入模式需要调整代码中的ADC读取部分。