将 1-wire rom 地址写入变量

Question

我想从一堆单线设备中将设备 rom 地址写入数组。我尝试了很多选择，但显然我不知道如何正确地做到这一点。

在下面的代码中，在设备搜索循环中，我得到了打印在串行线上的地址，正如我所期望的那样。但是主循环的打印输出表明我在我的方法中将这个地址存储在一个数组中....

#include <OneWire.h>
// http://www.pjrc.com/teensy/td_libs_OneWire.html
OneWire  ds(2);

void setup(void) {
   Serial.begin(9600);
   while (!Serial) {   
  }
}

unsigned char UIDs[12];
int indx=0;

void getDeviceAddresses(void)
{
 int i=0;
 byte present = 0;
 byte done = 0;
 byte data[12];
 byte addr[8];

 while ( !done )
 {
   if ( ds.search(addr) != 1)
   {
     Serial.print("No more addresses.\n");
     ds.reset_search();
     done = 1;
     delay(1000);
     indx=0;
     return;
   }
   else
   {
     Serial.print("Sensors");
     Serial.print(indx);
     Serial.print(" address is:\t");
     indx++;
    //read each byte in the address array
    for( i = 0; i < 8; i++) {
      //Serial.print("0x");
      if (addr[i] < 16) {
        Serial.print('0');   
      }
      // print each byte in the address array in hex format
      UIDs[indx]=(UIDs[indx]+(addr[i], HEX));                    // I guess this is not how to do it....
      Serial.print(addr[i], HEX);
    }
  }
  Serial.println();
 }
}

void loop (){
  getDeviceAddresses();
  int i=0;
  while (true) {
    for ( indx = 0; indx < 13; indx++) {
      Serial.println(UIDs[indx]);    
    }
   delay(4000);
  }
}

Sensors0 address is:    106C402502080064
Sensors1 address is:    101E3C25020800DE
Sensors2 address is:    10614C250208000F
Sensors3 address is:    10513325020800E0
Sensors4 address is:    10094B250208003C
Sensors5 address is:    104D342502080097
Sensors6 address is:    10FD4025020800E2
Sensors7 address is:    10534025020800AD
Sensors8 address is:    1047672502080083
No more addresses.
0
128
128
128
128
128
128
128
128
128
0
0
12

Answer 1

addr 似乎是一个包含您地址的 8 字节数组。

如果定义为：

unsigned char UIDs[12][8];

然后在每次通过你的函数时你有：

{
     Serial.print("Sensors");
     Serial.print(indx);
     Serial.print(" address is:\t");
     indx++;
    //read each byte in the address array
    for( i = 0; i < 8; i++) {
      //Serial.print("0x");
      if (addr[i] < 16) {
        Serial.print('0');   
      }
      // print each byte in the address array in hex format
      UIDs[indx][i] = addr[i];         
      Serial.print(addr[i], HEX);
    }
  }

最后在循环中打印它们：

for ( indx = 0; indx < 13; indx++) {
      for (int i=0; i<8; i++){
         if(UIDs[indx][i] < 16){
            Serial.print('0');
         }
      Serial.print(UIDs[indx][i], HEX);    
    }

Answer 2

@Delta_G - 谢谢！

我首先尝试了二维数组，但无法正确使用。认为我搞砸了第二个打印例程。为了将来有人需要这个参考，这是一个完整的工作测试代码。

unsigned char UIDs[12][8];
byte indx=0;
byte nr_of_devices=0;
#include <OneWire.h>
// http://www.pjrc.com/teensy/td_libs_OneWire.html
OneWire  ds(2);

void setup(void) {
   Serial.begin(9600);
   while (!Serial) {   
  }
}

void getDeviceAddresses(void)
{
 int i=0;
 byte present = 0;
 byte done = 0;
 byte data[12];
 byte addr[8];

 while ( !done )
 {
   if ( ds.search(addr) != 1)
   {
     Serial.print("No more addresses.\n");
     ds.reset_search();
     done = 1;
     delay(1000);
     nr_of_devices=indx;
     indx=0;
     return;
   }
   else
   {
     Serial.print("Sensors");
     Serial.print(indx);
     Serial.print(" address is:\t");
     indx++;
    //read each byte in the address array
    for( i = 0; i < 8; i++) {
      //Serial.print("0x");
      if (addr[i] < 16) {
        Serial.print('0');    
      }
      // print each byte in the address array in hex format
      UIDs[indx][i] = addr[i];                    
      Serial.print(addr[i], HEX);
      if (!i >= 1) {
        Serial.print("-");
      }
    }
  }
  Serial.println();
 }
}

void loop (){
  getDeviceAddresses();
  int i=0;
  while (true) {
  Serial.println("Sensors found:");
  for ( indx = 1; indx < nr_of_devices; indx++) {
    Serial.print(indx);Serial.print(": ");
      for (int i=0; i<8; i++){
         if(UIDs[indx][i] < 16){
            Serial.print('0');
         }
      Serial.print(UIDs[indx][i], HEX);    

    }
   Serial.println("");
  }
  delay(4000);
  }
}

将 1-wire rom 地址写入变量

write 1-wire rom addres to variable

c

arrays

arduino

1wire