86 lines
2.5 KiB
C++
86 lines
2.5 KiB
C++
|
#include "bme280.h"
|
||
|
|
|
||
|
|
BME280::BME280(int gpioIdx){ //初始化设备
|
||
|
|
if ((fd = open(I2C_PATH, O_RDWR)) < 0) {
|
||
|
|
perror("无法打开I2C设备!");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (ioctl(fd, I2C_SLAVE, gpioIdx) < 0) {
|
||
|
|
perror("无法打开GPIO!");
|
||
|
|
close(fd);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (i2c_smbus_read_byte_data(fd, IDENT) != 0x60) {
|
||
|
|
perror("无法读取数据!");
|
||
|
|
close(fd);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
i2c_smbus_write_byte_data(fd, SOFT_RESET, 0xB6);
|
||
|
|
usleep(50000);
|
||
|
|
setCompensationParams(fd);
|
||
|
|
i2c_smbus_write_byte_data(fd, CTRL_HUM, 0x1);
|
||
|
|
i2c_smbus_write_byte_data(fd, CONFIG, 0);
|
||
|
|
i2c_smbus_write_byte_data(fd, CTRL_MEAS, 0x25);
|
||
|
|
}
|
||
|
|
bool BME280::ReadData(){
|
||
|
|
if ((i2c_smbus_read_byte_data(fd, 0xF3) & 0x9) != 0) {
|
||
|
|
printf("%s\n", "无法读取温度数据!");
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
i2c_smbus_read_i2c_block_data(fd, DATA_START_ADDR, DATA_LENGTH, dataBlock);
|
||
|
|
i2c_smbus_write_byte_data(fd, CTRL_MEAS, 0x25);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
double BME280::GetTemp(){
|
||
|
|
return BME280_compensate_T_double((dataBlock[3] << 16 | dataBlock[4] << 8 | dataBlock[5]) >> 4);
|
||
|
|
}
|
||
|
|
double BME280::GetPressure(){
|
||
|
|
return BME280_compensate_P_double((dataBlock[0] << 16 | dataBlock[1] << 8 | dataBlock[2]) >> 4)/100.f;
|
||
|
|
}
|
||
|
|
double BME280::GetHumidity(){
|
||
|
|
return BME280_compensate_H_double(dataBlock[6] << 8 | dataBlock[7]);
|
||
|
|
}
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
//初始化设备
|
||
|
|
BME280 b(0x76);
|
||
|
|
httplib::Server sv;
|
||
|
|
sv.Get("/", [&b](const httplib::Request &, httplib::Response &res) {
|
||
|
|
b.ReadData();
|
||
|
|
char text[1024]="Unk";
|
||
|
|
sprintf(text,"<html>"
|
||
|
|
"<head>"
|
||
|
|
"<meta charset=\"UTF-8\">"
|
||
|
|
"<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0,maximum-scale=1.0\">"
|
||
|
|
"<style>"
|
||
|
|
".card {"
|
||
|
|
"width: 300px;"
|
||
|
|
"padding: 16px;"
|
||
|
|
"border: 1px solid #ddd;"
|
||
|
|
"border-radius: 8px;"
|
||
|
|
"box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.1);"
|
||
|
|
"background-color: #fff;"
|
||
|
|
"font-family: Arial, sans-serif;"
|
||
|
|
"margin: 20px;"
|
||
|
|
"}"
|
||
|
|
".card p {"
|
||
|
|
"margin: 0;"
|
||
|
|
"margin-bottom: 10px;"
|
||
|
|
"}"
|
||
|
|
"</style>"
|
||
|
|
"</head>"
|
||
|
|
"<body>"
|
||
|
|
"<div class=\"card\">"
|
||
|
|
"<p>🌡温度: %.2f C<br/>💨气压: %.2f Pha<br/>💧湿度: %.2f %rH</p>"
|
||
|
|
"</div>"
|
||
|
|
"</body>"
|
||
|
|
"</html>"
|
||
|
|
,b.GetTemp(),b.GetPressure(),b.GetHumidity());
|
||
|
|
|
||
|
|
res.set_content(text, "text/html");
|
||
|
|
});
|
||
|
|
sv.listen("0.0.0.0", 1234);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|