Forum 2005-2010 (read only)
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Jul 03, 2006, 06:21 pm
i am trying to control a YAMPP III Industrial MP3 PLayer via Serial Output from Pins 0 and 1... it doesnt work.
i wired the TX Pin of the Arduino (USB) to the RX of the player via a potential divider circuit using 3 10k resistors, like its described in the manual.
when i power everything up, all seems fine, the player boots up.
but it just doesnt get the serial messages from the arduino. in the manual the command for playing song 1 is 0x01. how can i send this data to the player? serial.print(1, HEX) doesnt help...
has anyone here experience with serial communication with other devices?
Jul 03, 2006, 08:07 pm
Have you tried serial.print(1, BYTE)? Using "HEX" will send the ASCII digits of the number, e.g. '1' == 49, while the mp3 player might expect the byte 1.
Jul 03, 2006, 09:01 pm
hey mellis, yes, i tried serial.print(1, BYTE)... it does not help...
but thank you!
what does 0x before a HEX value mean, anyway?
Jul 09, 2006, 02:12 pm
Hey Mellis, just so you know:
Serial.print (Value, BYTE); is the correct way to go... the problem was that the YAMPP player was set to another baud rate (2400 instead of 19200) since i bought it second-hand from a PICAXE user... and the PIC supports only 2400...
now it works.
if anyone is interested in how to connect a YAMPP, an EasyRadio Module and an ARDUINO Board,