simulating i2c

[johnlong]

Hi All
I am trying to simulate the return actions of a 28X2 as a slave
I am sendig 23,45,111 from the serial terminal simulator but
I am recieving 95 and 104 respectivally not the 3 bytes I am expecting
have altered the simulator settings to %xxxxxxx0 i2cfast, i2cbyte check box

TH: 
	photo=0:dry=0:RH=0
	hi2csetup i2cmaster,pic, i2cfast, i2cbyte '%1100000 for 28x2 slave
	hi2cout 0,("c","h")
	pause 3000
	do
	hi2cin 0,(dry,RH,photo)'b48,b50,b23 
	pause 500
	sertxd("Dry="," ",#dry," ","RH="," ",#RH," ","photo="," ",#photo,cr,lf)
loop until photo<>0

	return

can the simulater be used for i2c communications

regards john

 

[lbenson]

Don't know about your 95, but 104 is the decimal value for the ascii charactor, "h", which is what you wrote in position 2 (address 1), so would be expected. For the "c" you wrote, you should be seeing 99 with #dry. You didn't write a third charactor, so would expect 0 to be returned for photo--the NUL character--which should print as 0 with your #photo.

If you are expecting charactors, you should omit the "#" in your sertxd command.

For the ASCII charactor table, see: http://www.asciitable.com/

Your code works for me in simulation (giving 99 for the first byte returned by hi2cin).

 

[hippy]

Ditto; works for me -

#Picaxe 28x2
Do
  For b0 = "a" to "z"
    hi2csetup i2cmaster, $C0, i2cfast, i2cbyte
    hi2cout 0,( b0, "b", "c")
    pause 1000
    hi2cin 0,( b1, b2, b3 )
    SerTxd( b1, TAB, b2, TAB, b3, CR, LF )
  Next
Loop