Re:TC65 SPI Exception

[German Fischman]

Hello!!

I am working with TC65.I need it to connect to a Maxim6950 via SPI in order to control 7 segment led.The PCB board --interface-- is under manufacturing. I am testing the code without
any external connection right now and I am receiving an SPI class Connection exception as you can see below.


                           - javax.microedition.io.Connec
tor.open(), bci=12
                   - javax.microedition.io.Connector.open(), bci=3
                                                                   - javax.micro
edition.io.Connector.open(), bci=2
                                   - midlet300.Midlet300$SPICommunicator.openSPI
(), bci=3
          - midlet300.Midlet300$PortListener.run(), bci=34
                                                          Uncaught exception: ja
va.lang.NullPointerException:   0
                                  - midlet300.Midlet300$SPICommunicator.send(),
bci=94
       - midlet300.Midlet300$SPICommunicator.sendCommand(), bci=2
                                                                  - midlet300.Mi
dlet300$SPICommunicator.setup(), bci=3
                                       - midlet300.Midlet300$PortListener.run(),
 bci=39



This nullpointer exception seems to come from
spiConn = (SpiConnection) Connector.open("spi:0;baudrate=100;clockMode=0");

Is it possible to receive a nullpointer like this because I am testing it without an SPI device?



Best Regards,

German Fischman

[Ondrej Janovsky]

Hello,

I will try it tomorrow on my tc65ix and ehs5.

Regards Ondrej.

Dne 1. 2. 2015 0:59 "German Fischman" <german....@gmail.com> napsal(a):

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[GermanF]

Hi Ondrej.Glad to see your reply!

I am totally lost. If SPI protocol does not need an acknowledge like I2C why I am receiving a ConnectionNotFoundException?
I am testing the code without any external connection.If I use AT Command there isn't any problem at all.

Regards,
German Fischman

open spi
javax.microedition.io.ConnectionNotFoundException

                                                  - javax.microedition.io.Connec
tor.open(), bci=12
                   - javax.microedition.io.Connector.open(), bci=3
                                                                   - javax.micro
edition.io.Connector.open(), bci=2

                                   - fox.Fox$SPICommunicator.openSPI(), bci=11
                                                                               -
 fox.Fox$PortListener.run(), bci=34
 
 
 
 sending data SPI CHANNEL
Uncaught exception: java.lang.NullPointerException:   0
                                                        - fox.Fox$SPICommunicato
r.send(), bci=102
                  - fox.Fox$SPICommunicator.sendCommand(), bci=2
                                                                 - fox.Fox$SPICo
mmunicator.displayNumber(), bci=25
                                   - fox.Fox$PortListener.run(), bci=75


Running SetUp
sending data SPI CHANNEL
Uncaught exception: java.lang.NullPointerException:   0
                                                        - fox.Fox$SPICommunicato
r.send(), bci=102
                  - fox.Fox$SPICommunicator.sendCommand(), bci=2
                                                                 - fox.Fox$SPICo
mmunicator.setup(), bci=11
                           - fox.Fox$PortListener.run(), bci=39

[eppie]

Please try with uppercase. SPI: instead of spi:. I have seen something simular with the COM/com ports.