Hi guys,
I am now using telos platform, which is BSN development kit from Imperial
College London.
This platform has SPI/Uart0 interface and Uart1. Our group are now using this
BSN Development Kit to develop our own prototype, which use another platform
Platform1 to connect to BSN through Uart1 interface, we build our own CC2420
stack on Platform1 and try to communicate with another BSN node trough CC2420,
like the following graph.
Telos(BSN)
|-----------------------------------------------------|
| |-----------| SPI |-----------| | Uart
|--------------|
| | RF | <--------------- | MSP430 |<-|-------------->|Platfrom1
|
| |-----------| BSN Node |-----------| | |
-------------|
|-----------------------------------------------------|
Caus we don’t have standalone CC2420 module. What telos platform do is to
function as Uart-SPI gateway in that we want to utilize the CC2420 module
without using CC2420 stack on Telos . On it, we use TinyOS 2.x to program the
node, when operating the RF module, we use purely Usart interface to read or
write CC2420, like the following interfaces:
call Usart.clrTxIntr();
call Usart.tx( ch );
call InterruptFIFOP.clear();
When we try to operate CC2420 on BSN and meanwhile transmit data through Uart,
then few problems happen.
1. After SRXON command strobe is sent to CC2420, we continue to try to
send data through Uart1, it turn that the data could not be received correctly
at BSN side.
2. The same problem would happen after I send STXON command strobe.
3. Since we only trace to the STXON step, we could not guarantee there’s
no problem for other command strobes, if so, can you guys point them out?
Have ever friends encounter this kind of problem? Or do you have any idea about
these?
Besides, Is there any efficient method to debug BSN development kit, or telos
platform? Do we need to buy other ICE tools if we want to debug BSN?
Neil
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