You can define a struct just follow this tutorial
http://docs.tinyos.net/index.php/Mote-mote_radio_communication
<http://docs.tinyos.net/index.php/Mote-mote_radio_communication>
typedef nx_struct BlinkToRadioMsg {
nx_uint8_t string[10];
nx_uint16_t i;
} BlinkToRadioMsg;
besides , I add " char c;" in Blink and there is no compiling error.
2011/2/23 Shamali Gunawardena <[email protected]>
> Ok so everything transmitted will be received in its decimal format and I
> have to convert it. Am I correct? In that case I would run into another
> problem. say I get a combination of integers and strings (eg Hello123) then
> how can I decide on what to convert and what not to for example 72 could
> mean its H or the number 72. unless I know the length or the type of the
> data received I will not be able to interpret it.
> and why doesn't the char work ? how can I declare an array with
> nx_uint8_t.
>
> I am sorry for the repeated mail. but am desperate to go past this point.
>
> Regards,
>
> Shamali
>
> ------------------------------
> *From:* 崔晓宗 <[email protected]>
> *To:* Shamali Gunawardena <[email protected]>;
> [email protected]
> *Sent:* Wed, February 23, 2011 2:38:21 PM
>
> *Subject:* Re: [Tinyos-help] sending a string from tinyos
>
> 0x48 is equal to 72 in decimal, if you receive them on PC, you can turn
> them into 'H'.
>
> 2011/2/23 Shamali Gunawardena <[email protected]>
>
>> thanks for the reply. How do you define it.
>>
>> I tried with just sending one character first. (the variable name is
>> character)
>>
>> 1. char charcter; (doesn't work) - compilation problem
>> 2. nx_uint8_t character- assigned the value 'H' and 0x48 to the message.
>> In both cases the received value was 72 (the decimal value)
>>
>> How do I get around that.
>>
>> regards,
>>
>> Shamali
>> ------------------------------
>> *From:* 崔晓宗 <[email protected]>
>> *To:* Shamali Gunawardena <[email protected]>;
>> [email protected]
>> *Sent:* Wed, February 23, 2011 1:49:36 PM
>> *Subject:* Re: [Tinyos-help] sending a string from tinyos
>>
>> you can send the string as a char array, which is similar to sending
>> integers.
>>
>> 2011/2/23 Shamali Gunawardena <[email protected]>
>>
>>> Hi,
>>>
>>> This is a pretty basic question. I need to know how I can send a string
>>> (eg Hello) in nesC. I know how to send integers (unit_16_t and etc)
>>> How do I specify the data type and how do I assign the value.
>>>
>>> thanks
>>>
>>> Regards,
>>>
>>> Shamali
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Tinyos-help mailing list
>>> [email protected]
>>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>>>
>>
>>
>>
>> --
>> Regards,
>> Xiaozong Cui
>>
>>
>>
>
>
> --
> Regards,
> Xiaozong Cui
>
>
>
--
Regards,
Xiaozong Cui
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