I am attempting to use a CrystalFontz CFA-633 display with an Arduino Mega.
I am attempting to send the text to the display via a serial connection. based on the product manual the data should be sent in the following format:
using the 633WinTest app that crystalfontz provides i have created the following sample packet
aC=7( 7 = LCD Line 1),L=16,D="Hello ",CRC=0x4C4B
this snip from the WinTest app tells that the packet type is 7, the size is 16, and the CRC is 0x4C4B
using this i have created the following code without luck
Serial1.write(7); Serial1.write(16); Serial1.write("Hello "); Serial1.write(0x4C); Serial1.write(0x4B);
any suggestions on what i am doing wrong would be greatly appreciated. If you need more info about the display, the communication protocol stuff starts on page 18 of the PDF.
Thank you in advance.