pic16f877a实现LU90614红外测温传感器代码编程
时间: 2023-10-03 14:07:16 浏览: 107
很遗憾,由于LU90614红外测温传感器并不是一款常见的传感器,我们无法提供完整的代码编程。但是,我们可以提供一些可能有用的信息和代码片段,帮助您进行编程。
首先,您需要了解LU90614红外测温传感器的工作原理和通信协议。根据LU90614的规格书,它使用I²C通信协议,并且可以通过读取和写入寄存器来进行配置和读取数据。您需要使用PIC16F877A的I²C模块来与传感器进行通信。
以下是一些可能有用的代码片段,但请注意,这仅仅是一个指导,您需要根据实际情况进行修改和调整。
1. 初始化I²C模块
```c
#include <xc.h>
void i2c_init(void) {
SSPCON = 0b00101000; // I2C Master mode, clock = Fosc/(4 * (SSPADD + 1))
SSPADD = 9; // I2C clock = 100kHz (assuming Fosc = 4MHz)
}
```
2. 读取一个字节的数据
```c
unsigned char i2c_read_byte(unsigned char address) {
unsigned char data;
// Send start condition
SSPCON2bits.SEN = 1;
while (SSPCON2bits.SEN);
// Send device address with R/W bit
SSPBUF = (address << 1) | 1;
while (!SSPSTATbits.BF);
if (SSPCON2bits.ACKSTAT) {
// ACK not received, handle error
}
// Receive data
SSPCON2bits.RCEN = 1;
while (!SSPSTATbits.BF);
data = SSPBUF;
// Send ACK
SSPCON2bits.ACKDT = 0;
SSPCON2bits.ACKEN = 1;
while (SSPCON2bits.ACKEN);
// Send stop condition
SSPCON2bits.PEN = 1;
while (SSPCON2bits.PEN);
return data;
}
```
3. 写入一个字节的数据
```c
void i2c_write_byte(unsigned char address, unsigned char data) {
// Send start condition
SSPCON2bits.SEN = 1;
while (SSPCON2bits.SEN);
// Send device address with R/W bit
SSPBUF = (address << 1) | 0;
while (!SSPSTATbits.BF);
if (SSPCON2bits.ACKSTAT) {
// ACK not received, handle error
}
// Send data
SSPBUF = data;
while (!SSPSTATbits.BF);
if (SSPCON2bits.ACKSTAT) {
// ACK not received, handle error
}
// Send stop condition
SSPCON2bits.PEN = 1;
while (SSPCON2bits.PEN);
}
```
4. 读取LU90614的温度数据
```c
unsigned int lu90614_read_temperature(void) {
unsigned int data;
// Write to command register to start temperature measurement
i2c_write_byte(0x5A, 0x01);
__delay_ms(20); // Wait for measurement to complete
// Read two bytes of temperature data (MSB first)
data = i2c_read_byte(0x5A) << 8;
data |= i2c_read_byte(0x5A);
return data;
}
```
请注意,以上代码仅提供了一些基本的操作,您需要根据LU90614的规格书和PIC16F877A的数据手册进行详细的编程和调试。
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