Serial Control of Christie LCD Projector
SAAM
Posts: 5
Howdy all!
I'm trying to control a Christie LX20 projector with a Javelin Stamp and I'm having a hard time correlating Christie's documentation to Parallax's to what (little) I know about Hex & serial.
Christie says:
..all communications (commands and replies) are hexadecimal. Ensure you are sending hexidecimal. Commands are case sensitive. Make sure to always send letters in upper case. Example: the Power On command is COO(CR) where (CR) is the Carriage Return character, so send 43h 30h 30h 0Dh
What I'm assuming the Christie controller wants is the hex values
43
30
30
D
Question 1: is this what y'all would assume?
Question 2: if so, is there a javelin/java class/method to send hex via serial?
(I remember there being specific methods native to the Basic stamp for this)
Thanks!
I'm trying to control a Christie LX20 projector with a Javelin Stamp and I'm having a hard time correlating Christie's documentation to Parallax's to what (little) I know about Hex & serial.
Christie says:
..all communications (commands and replies) are hexadecimal. Ensure you are sending hexidecimal. Commands are case sensitive. Make sure to always send letters in upper case. Example: the Power On command is COO(CR) where (CR) is the Carriage Return character, so send 43h 30h 30h 0Dh
What I'm assuming the Christie controller wants is the hex values
43
30
30
D
Question 1: is this what y'all would assume?
Question 2: if so, is there a javelin/java class/method to send hex via serial?
(I remember there being specific methods native to the Basic stamp for this)
Thanks!
Comments
so you can send 0x43,0x30,0x30,0x0D which is the same
as sending the string "C00\r"
You use the Uart object
Uart lcd = new Uart(Uart.dirTransmit,CPU.pin0,Uart.dontInvert,Uart.speed9600,Uart.stop1);
//send command 0
lcd.sendString("C00\r");
If there is any reply, use another uart object
Uart reply = new Uart(Uart.dirReceive,CPU.pin1,Uart.dontInvert,Uart.speed9600,Uart.stop1);
if (reply.byteAvailable()) {
· int c = reply.receiveByte();
}
If a reply consists of multiple bytes, assemble received bytes into a char array or stringbuffer.
regards peter