Date
1 - 5 of 5
Stacking multiple TNC-Pi9k6's #tnc
|
I've seen a few topics on here about using multiple TNC-Pi9k6's with a raspberry pi but when I connect 2 TNCs I only see 1 TNC when looking at i2cdetect. How do I get both TNCs to show up in i2c or as discrete serial ports?
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1e --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
1e is the TNC and 48 is a UPS pitnc_getparams Version 0.0.0.5
KISS Data Frame
TNC Software Version 30
01 TXDelay - Zero means use ADC 160
02 Persistance 30
03 Slottime (in 10 mS) 0
04 TXTail 0
05 Full Duplex - Not used 255
06 Our Channel (Hex) ff
07 I2C Address (0 = async) Hex 0c
08 Mode Speed 0
09 RX Level (Config) 4
10 TX Level 0
11 RX Level (Actual) 170
13 Centre Freq 810
6 1e a0 1e 0 0 ff ff c 0 4 0 aa 51 c0 sum 55
** Checksum Error - Sum = 55 Should be Zero
|
|
|
|
Jim WB9QPM
Run the Arduino program. Open the SM_Teensy sketch.
Edit the I2C address in the source. Rebuild the sketch. Upload the TNC. Stacked TNC require a unique I2C address for each. 73, Jim WB9QPM
|
|
|
|
N5XMT
If you want to run 2 TNC-PI9K6's you can't run both i2C unless you modify the code and reflash one of them for a different i2C address. Then you can run one serial, the other i2C
On Oct 16, 2020, at 01:28, mskurnik@... wrote: I've seen a few topics on here about using multiple TNC-Pi9k6's with a raspberry pi but when I connect 2 TNCs I only see 1 TNC when looking at i2cdetect. How do I get both TNCs to show up in i2c or as discrete serial ports?
|
|
|
|
Can I use pitnc_setparams to set the I2C address instead on one connected, then connect the other one and use both. If not I can just run the arduino sketch like you said.
|
|
|
|
N5XMT
Unfortunately on the 9K6 you can't. Hardcoded in the code
On Fri, Oct 16, 2020 at 10:23 AM <mskurnik@...> wrote: Can I use pitnc_setparams to set the I2C address instead on one connected, then connect the other one and use both. If not I can just run the arduino sketch like you said.
|
|
|