GPIO button help. - Printable Version

Code:

# Set True to use a 7-segment display via I2C

# Two versions: original sparkfun display and cheap HT16K33 based ebay version

USE_I2C_7SEGMENTDISPLAY = True

USE_i2c_7SEGMENTDISPLAY_HT16K33 = False

#

# --- above display definitions are mutually exclusive = you can have only one



# Set True to use the GPIO buttons, configure GPIO pins below

USE_BUTTONS = True









######  Mapping of GPIO_pins: adapt to your hardware wiring/setup  #####

# GPIO modules in this build use mode=BCM. Modes cannot be mixed.

# Make sure used devices do not overlap in their pin usage (except power/gnd ofcourse),

# but for unused devices it is safe to keep or delete the definitions here as you like.

# In example below buttons 18&27 overlap# I use a box with buttons&LCD and one with HiFiBerry&Leds.

# Some devices require no mapping here, but do use pins:

#    -- EEPROM      : 0,1

#    -- Serial Port : 14,15

#    -- I2C        : 2,3

#    -- HiFiBerry  : 2,3,18,19,20,21      

#    -- PirateAudio Hat :  5 (Button A), 6 (Button B), 16 (Button X), 24 (Button Y)



#  -- USE_BUTTONS -- ; A valid GPIO value will activate the button

BUT_incr=17    ; Increase button, increases value/proceeds to next menu choice

BUT_decr=18    ; Decrease button, opposite of above.

BUT_sel=xx

BUT_ret=xx

Code:

#    -- USE_BUTTONS --

# A valid GPIO value will activate the button

# Increase, increases value/proceeds to next menu choice

# Decrease, opposite of above. In 3-button setup it will return from submenu

# Select, either selects menu choice or returns to menu from value set

# Return, if this button is available, it returns to menu and the decr-button is consistent

BUT_incr=05

BUT_decr=13