Datasheet

Jon Waddington

The code below shows how the name of a device is input with the remote control.

PRI rcname_in(i) | j, t, x

code := 0 'flush code

t := i 'backup device number

repeat j from i to i+9 'clear bytes in name

name[j]~

i := t 'i = device number

text.out($00) 'clear screen

showdate(0, 0) 'show date and time

showtime(35, 0)

text.str(string(13," Add Device (Remote)",13,13," Name: ")) 'prompt

user

x := 12 'x = position on screen

repeat until ((code == enter) OR (i == t+9)) 'repeat until enter is pressed or

all bytes input

code := wait 'wait for button press

if (code =< 9) 'if button pressed is a number

text.xy(x, 4) 'move text cursor to x, y position

text.dec(code) 'display code

name[i] := code + 48 'save code as ASCII number

i++ 'move pointer to next byte

x++ 'increment cursor position

When entering a new name for a device, the 10 bytes which will be the name are cleared

as a precaution. This prevents errors when displaying the name which would occur if

there was any data already in these bytes. The screen is cleared and the date and time

are shown. The user is then prompted to enter the name of the device. A loop is then

entered which displays the key that the user inputs and moves the text cursor to the

next tile and increments the data pointer to write the next byte of the name.

This method is similar for entering, editing and deleting devices. When a device has been

added, the “dvcnum” variable is incremented so that when a new device is added, the

program knows where to write the data in the arrays.

When a device is deleted, the data in the arrays are shifted down so that there is no

empty space in the arrays. The “dvcnum” array is also decremented.

A variable can be assigned to point to a byte from the array to read information for a

specific device. For example, to display the value of device number 2, “dp”(device

pointer) can be set to “2”. To show the name, a loop is used to display the byte at

name[dp*10], then name[(dp*10)+1] and so on, until the name ends or the 10

byte is

displayed.