Keyboard does not work directly after a reset
bazi
Posts: 29
Hi there,
If i do a reset on my board, the keyboard won't be found if i don't wait for my keyboard for about 1 second. Is there a way to reset the keyboard via software and maybe theres a way to poll the keyboard if it's ready or not?
My keyboard is connected at 26(data) and 27(clock).
I'm using the keyboard driver shipped with the parallax spin tool, but i'm using it with Brad's Spin Tool (i have no windows).
Look, thats a piece of junk, aaaah i mean code, that works:
The power supply should be good enough. It's a switching power supply with 5V/1A (for keyboard) and 3.3V(4A) for the Propeller, EEProm and two PCF8574 and a max232. This switching power supply is taken from a DVD-Player.
If i do a reset on my board, the keyboard won't be found if i don't wait for my keyboard for about 1 second. Is there a way to reset the keyboard via software and maybe theres a way to poll the keyboard if it's ready or not?
My keyboard is connected at 26(data) and 27(clock).
I'm using the keyboard driver shipped with the parallax spin tool, but i'm using it with Brad's Spin Tool (i have no windows).
Look, thats a piece of junk, aaaah i mean code, that works:
CON
_clkmode = xtal1 + pll16x
_xinfreq = 5_000_000
keyboard = 26
OBJ
key : "comboKeyboard" ' Keyboard Driver
text : "aigeneric_driver" ' AiGeneric 25-line Video
fsrw : "fsrwFemto" ' Modified SD routines
...
...
PUB main |
waitcnt(clkfreq + cnt)
key.start(keyboard)
waitcnt(clkfreq + cnt)
if not key.present
text.str(string(CR,"no keyboard! aborted!",CR))
abort
_xinfreq is right, i've checked, 5mhz crystal is soldered.The power supply should be good enough. It's a switching power supply with 5V/1A (for keyboard) and 3.3V(4A) for the Propeller, EEProm and two PCF8574 and a max232. This switching power supply is taken from a DVD-Player.
Comments
Are you using pull-up resistors on the SDA and SCL lines?
It works for me without any problems. For more info check my
Propeller Multimedia Board thread.