NodeMCU 2.2.0 extra module

irrecv

This module is used for infrared receiving.

irrecv.bind( pin, protocol, callback )
pin - The pin connect to the signal line of the receiver.
protocol - The infrared protocol.Now only irrecv.NEC is surported.
callback - The callback function for receiving. The parameters are bytes received.
return - nil

irrecv.bind( 3, irrecv.NEC, function( cli, clirev, cmd, cmdrev ) print( cli, cmd ) end

irsend

This module is used for infrared sending.

irsend.setup()
return - nil
Prepare for sending. After this call, user should connect the vcc pin of sender to gpio 2.

irsend.send( b32, protocol )
b32 - The data to send.It should be a 32-bit integer.
protocol - The protocol for sending.Now only irsend.NEC is surported.
return - nil

irsend.setup()
irsend.send( 0x00ff5aa5, irsend.NEC )

tinynmea

This module is used for parsing GPRMC data.

uart.on( "data", 192, function(data)
  local date, time, longitude, latitude, speed, cmg, geomagnetic = tinynmea.parse(data)
  if date then
    print( date, time, longitude, latitude, speed, cmg, geomagnetic )
  end
end, 0)

acfcanvas

This module is a util of font rendering for u8g.

acfcanvas.setup( fontname_str, canvas_width, canvas_height )
fontname_str - The acf font file on flash.
canvas_width - The width of the canvas for rendering.
canvas_height - The height of the canvas for rendering.
return - 0 for success, otherwise failed.
Create the canvas, using the font with the file 'fontname_str' and the size with canvas_width/canvas_height.

acfcanvas.clear( [rowstart[, rowend]] )
rowstart - The start row to be cleared, when 0 means the bottom row.
rowend - The row after the last row to be cleared, default to rowstart + 1.
return - 0 when successed.
Erase one or multi row.

acfcanvas.draw( x, y, width_max, str )
x, y - The base point for font rendering.
width_max - The max width of rendering the string, 0 means no limit.
str - The string for rendering.
return - nil when width is enough, or a new string for not rendered.
Print a line at base point (x,y).

acfcanvas.u8gbmp()
return - lua-string.
Get the bitmap data for u8g drawBitmap method.

acfcanvas.setup( "somefont.acf", 256, 16 )
acfcanvas.clear()
acfcanvas.draw( 25, 2, 0, "hello,world!" )
local data = acfcanvas.u8gbmp()
disp:drawBitmap(0,0, 32, 16, data)