Hi,
I have written a code that gets the local time at start and stop of each
radio period in MSp430PowerCycleP.nc. I would like to use these variables in
my application code to find the actual ON time of the radio. But, the extern
gives me error
implementation {
extern uint32_t stop_time;
extern uint32_t start_time;
extern uint8_t over;
uint32_t local_time[2];
.......
event message_t* Receive.receive(message_t* msg, void* payload, uint8_t len)
{
call Leds.led2Toggle();
if (len == sizeof(Msg)) {
local_time = ((stop_time * over) - start_time);
Msg* rcvpkt = (Msg*)payload; <--- Line no 127
..........
I am getting the following error:
In component `CommC':
CommC.nc: In function `Receive.receive':
CommC.nc:127: syntax error before `*'
CommC.nc:131: `srlpkt' undeclared (first use in this function)
CommC.nc:131: (Each undeclared identifier is reported only once
CommC.nc:131: for each function it appears in.)
CommC.nc:131: `rcvpkt' undeclared (first use in this function)
The code works fine if I remove the following line:
local_time = ((stop_time * over) - start_time);
I think there is some error in the extern variables usage. Can you please
help me with that.
Thanks,
Srinivas Hegde
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