Arduino 错误:没有命名类型? [英] Arduino error: does not name a type?
问题描述
我写了一个库，但有错误没有命名类型的问题.我已经尝试了一切，搜索了几个小时，但没有运气.库放置在arduino Sketch文件夹的libraries"文件夹中.请帮忙！！！我使用的是 OSX，但同样的问题也出现在 Windows 上.
I have written a library, but have problem with error does not name a type. I've tryed everything, searched for couple of hours and no luck. Library is placed in the "libraries" folder of the arduino sketch folder. Please help!!! I am using OSX, but the same problem occurs on Windows also.
这是库的头文件:
#ifndef OpticalSensor_h
#define OpticalSensor_h
#include <Arduino.h>
#include <SD.h>
#include <Wire.h>
#include <Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
#include <String.h>
class OpticalSensor
{
public:
OpticalSensor(int analogPort);
void LCDInit(int columns, int rows);
void SerialInit(int bitRate);
void SDInit();
double& ReadFromAnalogPort();
void SDCreateFile(String fileName);
void SDDeleteFile(String fileName);
void SDWriteToFile(String fileName);
void SDStreamToFile(String Text);
void SDOpenFileToStream(String fileName);
private:
int _analogPort;
bool _displayFlag;
Adafruit_RGBLCDShield _lcd;
File _MainRecFile;
double _voltage;
void _LCDClearAll();
void _LCDWriteInTwoRows(String row1, String row2);
void _DelayAndClearLCD(bool returnStatus);
};
#endif
这是库的 .cpp 文件:
This is .cpp file of the library:
#include <OpticalSensor.h>
Adafruit_RGBLCDShield _lcd;
File _MainRecFile;
double _voltage;
OpticalSensor::OpticalSensor(int analogPort)
{
_analogPort = analogPort;
}
void OpticalSensor::LCDInit(int columns, int rows)
{
_lcd = Adafruit_RGBLCDShield();
_lcd.begin(columns,rows);
}
void OpticalSensor::SerialInit(int bitRate)
{
Serial.begin(bitRate);
_bitRate = bitRate;
while(!Serial) {
//wait until serial is not open
}
}
void OpticalSensor::SDInit()
{
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(10, OUTPUT);
//check if SD can be found and initialized. Print also message to
//Serial if initialized and to _lcd if initialized.
if(!SD.begin(4)) {
if(Serial){
Serial.println("Initialization failed!");
}
if(_lcd){
_lcd.print("Init failed!");
}
_DelayAndClearLCD(true);
}
else {
if(Serial) {
Serial.println("Initialization done!");
}
if(_lcd) {
lcd.print("Init done!");
}
_DelayAndClearLCD(false);
}
}
void OpticalSensor::SDCreateFile(String fileName)
{
//check if file allready exists, if not it creates one
//and writes apropriate response to
//lcd and Serial if they are initialized.
if(SD.exists(fileName)) {
if(Serial) {
Serial.println(fileName + " already exists!");
}
if(_lcd) {
_LCDWriteInTwoLines(fileName,"already exists!");
}
_DelayAndClearLCD(false);
}
else
{
if(Serial) {
Serial.println(fileName + "Creating file " + fileName + "...");
}
if(_lcd) {
_LCDWriteInTwoLines("Creating file", fileName);
}
_MainRecFile = SD.open(fileName + ".txt", FILE_WRITE);
_MainRecFile.close();
_DelayAndClearLCD(false);
//check if file was created successffully and print apropriate response
//to lcd and Serial if they are initialized
if(SD.exists(fileName + ".txt")) {
if(Serial) {
Serial.println(fileName + ".txt" + " created successffully!");
}
if(_lcd) {
_LCDWriteInTwoLines(fileName + ".txt", "created!");
}
_DelayAndClearLCD(false);
}
else {
if(Serial) {
Serial.println("error: failed to create file!");
}
if(_lcd) {
_LCDWriteInTwoLines("error: failed to","create file!");
}
_DelayAndClearLCD(false);
}
}
}
//delete file from SD card
void OpticalSensor::SDDeleteFile(String fileName)
{
}
//open file, write data to it, and close file after.
void OpticalSensor::SDWriteToFile(String fileName, String Text)
{
_MainRecFile = SD.open(fileName + ".txt", FILE_WRITE);
_MainRecFile.println(Text);
_MainRecFile.close();
}
//Open file to stream data to it.
void OpticalSensor::SDOpenFileToStream(String fileName)
{
_MainRecFile = SD.open(fileName + ".txt", FILE_WRITE);
}
//Write data to file while file is open.
//Notice that you can stream data only to one file at a time!!!
//For instance, if you have two sensors that you want to
//write data to two different files, you have to use SDWriteToFile
//function!!!
void OpticalSensor::SDStreamToFile(String Text)
{
if(_MainRecFile) {
_MainRecFile.println(Text);
}
}
//close file that you streamed data too.
void OpticalSensor::SDCloseStreaming(String fileName)
{
_MainRecFile.close();
}
//clear entire LCD
void OpticalSensor::_LCDClearAll()
{
_lcd.clear();
_lcd.setCursor(0,0);
}
void OpticalSensor::_LCDWriteInTwoRows(String row1, String row2)
{
//write first String in row1
_lcd.print(row1);
//set cursor to the beginning of row 2
_lcd.setCursor(0,1);
//write second String to row 2
_lcd.print(row2);
}
void OpticalSensor::_DelayAndClearLCD(bool returnStatus)
{
//if Serial or _lcd are initialized, delay for 2 seconds
//and clear LCD
if(Serial || _lcd) {
delay(2000);
if(_lcd)
_LCDClearAll();
}
//terminate
if(bool == true) {
return;
}
}
double& ReadFromAnalogPort()
{
_voltage = analogRead(_analogPort);
return _voltage;
}
这是包含库的 .ino 文件:
And this is the .ino file where library is included:
#include <OpticalSensor.h>
OpticalSensor sensor(0);
void setup() {
sensor.LCDInit(16,2);
sensor.SerialInit(9600);
sensor.SDInit();
sensor.SDCreateFile("test1");
sensor.SDOpenFileToStream("test1");
}
void loop() {
}
这是错误:
在 Test_OpticalSensorLib.ino:1 包含的文件中:/Users/gaspersladic/Documents/Arduino/libraries/OpticalSensor/OpticalSensor.h:34:错误:Adafruit_RGBLCDShield"未命名类型/Users/gaspersladic/Documents/Arduino/libraries/OpticalSensor/OpticalSensor.h:35:错误:文件"未命名类型
In file included from Test_OpticalSensorLib.ino:1: /Users/gaspersladic/Documents/Arduino/libraries/OpticalSensor/OpticalSensor.h:34: error: 'Adafruit_RGBLCDShield' does not name a type /Users/gaspersladic/Documents/Arduino/libraries/OpticalSensor/OpticalSensor.h:35: error: 'File' does not name a type
推荐答案
您在评论中提到的两个包括是必不可少的.不命名类型"只是意味着该标识符没有对编译器可见的定义.如果您提到的 LCD 库中有错误，则需要解决这些错误 - 省略 #include 肯定不会修复它！
The two includes you mention in your comment are essential. 'does not name a type' just means there is no definition for that identifier visible to the compiler. If there are errors in the LCD library you mention, then those need to be addressed - omitting the #include will definitely not fix it!
来自经验的两个可能有用的注释:
Two notes from experience which might be helpful:
您需要将所有 #include 添加到主草图 - 无论它们是否通过另一个 #include 包含.
You need to add all #include's to the main sketch - irrespective of whether they are included via another #include.
如果您将文件添加到库文件夹，则必须重新启动 Arduino IDE，才能看到这些新文件.
If you add files to the library folder, the Arduino IDE must be restarted before those new files will be visible.
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