問題 'T' does not name a type

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1

下面這是我使用的程式碼
// Based on I2Cdevlib, MPU6050_raw
// Experiments to verify if any data loss when writing MPU6050 outputs to EEPROM

#include "I2Cdev.h"
#include "MPU6050.h"
#include <EEPROM.h>
#include "eeprom_anything.h"

// Arduino Wire library is required if I2Cdev I2CDEV_ARDUINO_WIRE implementation
// is used in I2Cdev.h
#if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
#include "Wire.h"
#endif

MPU6050 accelgyro;
int16_t ax, ay, az;
int16_t gx, gy, gz;

// [eeprom]
struct accelData{
int16_t ax;
int16_t ay;
int16_t az;
};
accelData acc;
int accIdx = 0;
int accMem = 0;
int max = 1024 / sizeof(acc);

void setup() {
// join I2C bus (I2Cdev library doesn't do this automatically)
#if I2CDEV_IMPLEMENTATION == I2CDEV_ARDUINO_WIRE
Wire.begin();
#elif I2CDEV_IMPLEMENTATION == I2CDEV_BUILTIN_FASTWIRE
Fastwire::setup(400, true);
#endif

// initialize serial communication
// (38400 chosen because it works as well at 8MHz as it does at 16MHz, but
// it's really up to you depending on your project)
Serial.begin(38400);

// initialize device
Serial.println("Initializing I2C devices...");
accelgyro.initialize();

// verify connection
Serial.println("Testing device connections...");
Serial.println(accelgyro.testConnection() ? "MPU6050 connection successful" : "MPU6050 connection failed");
}

void loop() {
//writeEEPROM();
dumpEEPROM();
}

void writeEEPROM()
{
// read raw accel/gyro measurements from device
accelgyro.getMotion6(&ax, &ay, &az, &gx, &gy, &gz);

// waive the first 100 sensor data
if (accIdx >= 200 && accIdx < max + 200)
{
Serial.print("Idx: "); Serial.print(accIdx-200);
Serial.print(", ax: "); Serial.print(ax); acc.ax = ax;
Serial.print(", ay: "); Serial.print(ay); acc.ay = ay;
Serial.print(", az: "); Serial.println(az); acc.az = az;
accMem = EEPROM_writeAnything(accMem, acc);
}
accIdx ;
}

void dumpEEPROM()
{
accelData accTmp;
int tmpMem = 0;
for (int i=0; i<max; i )
{
tmpMem = EEPROM_readAnything(tmpMem, accTmp);
Serial.print("Idx: "); Serial.print(i);
Serial.print(", ax: "); Serial.print(accTmp.ax);
Serial.print(", ay: "); Serial.print(accTmp.ay);
Serial.print(", az: "); Serial.println(accTmp.az);
}
}

這是我出現的error

MPU6050_EEPROM:20: error: 'T' does not name a type
MPU6050_EEPROM:20: error: ISO C++ forbids declaration of 'value' with no type [-fpermissive]
MPU6050_EEPROM:21: error: 'T' has not been declared
'T' does not name a type

跪求各位大神幫幫我~~~~

2

把eeprom_anything.h内容贴出来吧

3

liudr:
把eeprom_anything.h内容贴出来吧

#include <EEPROM.h>
#include <Arduino.h>  // for type definitions

template <class T> int EEPROM_writeAnything(int ee, const T& value)
{
    const byte* p = (const byte*)(const void*)&value;
    unsigned int i;
    for (i = 0; i < sizeof(value); i++)
	  EEPROM.write(ee++, *p++);
    return i;
}

template <class T> int EEPROM_readAnything(int ee, T& value)
{
    byte* p = (byte*)(void*)&value;
    unsigned int i;
    for (i = 0; i < sizeof(value); i++)
	  *p++ = EEPROM.read(ee++);
    return i;
}

http://playground.arduino.cc/Code/EEPROMWriteAnything

4

不知道什么神人六七年前写的程序了，有问题只能后果自负。我对Template不熟悉，不好意思。