int16 to uint8 array conversion for Serial Transmit
28 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hello there, I would like to take a int16 and split it into a uint8 array to transmit via serial connection (arduino).
Then i would like to reassemble the the two bytes to give me back my original int16. Any help would be appreciated :)
0 commentaires
Réponses (3)
Guillaume
le 26 Mai 2017
Modifié(e) : Guillaume
le 26 Mai 2017
exampleint16 = int16(12345);
sameasuint8 = typecast(exampleint16, 'uint8')
restoredint16 = typecast(sameasuint8, 'int16')
However, if all you want to do is transmit that int16. You could just fwrite it as is, and read it as an uint8:
%on the sender
fwrite(serialobj, yourint16, 'int16')
%on the reader
fread(serialobj, 2, 'uint8')
1 commentaire
Walter Roberson
le 26 Mai 2017
If you split into uint8 using typecast() then you need to take care of the endian problems yourself. For this purpose you need to know that if you typecast a 16 bit quantity into uint8 then on all current implementations of MATLAB, the first byte of the result is the least significant byte.
Voir également
Catégories
En savoir plus sur Logical dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!