Bob15

Member Since: May 6, 2009

Country: United States

  • Product LCD-09396 | about 2 years ago

    I am using the serLCD v2.5 with a PicAxe18X, and I found a little hint to help rid of the first character or command jibberish in the PicAxe docs under SerOut command:

     A ‘T’ baud rate idles high, with data pulses going low. When using a T baud rate
     the very first byte may become corrupt if the output pin was low before the serout
     command (the pin will be automatically left high after the serout command). To
     avoid this issue place the line high (via a’high’ command’) a few milliseconds
     before the very first serout command.
    

    Also I felt a bit dumb after I realized that the 0xFE command prefix is used for the Extended Commands, not the 0x7C used for the hardware set-up. Doh!

    This is a test snip that seems to work: (Thanks to JPLofLIL for the jump-start.)

      pause 200  ;pauses are overly generous, could be shorter
    setfreq m8 ;needs to be fast enough for higher baud rates
    pin0 = 1  ; Pin needs to idle high
      pause 200
    serout 0,T9600_8,(0x7c,137) 'backlight values 128-157
      pause 2000 '128=off 140=40% 150=73% 157=full on
    serout 0,T9600_8,(0xFE,0x01,"hello bob ")
      pause 2000
    serout 0,T9600_8,(0xFE,0x01)
      pause 2000
    serout 0,T9600_8,(" hello dude" )
    

No public wish lists :(