Hi Martin,I found a problem about the CC2420TransmitP module which support
the cc2430 platform. In the attemptSend() fuction ,I found the variable of
"status" always be equal to "success" in the sentence of " status = m_cca ?
call STXONCCA.strobe() : call STXON.strobe();" Because the STXONCCA.strobe()
and STXON.strobe() fuction are always return "success".This can be learn in the
sentence of "
async command cc2420_status_t Strobe.strobe[ uint8_t opcode ]() {
RFST = opcode;
return SUCCESS;
}"
So,it must be invalid to the next sentence of "if ( !( status &
CC2420_STATUS_TX_ACTIVE ) ) ".So,I think if the sentence of "return SUCCESS;"
can be changed as "return FSMSTATE;"That is to say,it should be return the
states of the FSMSTATE regester? The whole code as follow:
void attemptSend() {
uint8_t status;
bool congestion = TRUE;
call CSN.clr();
status = m_cca ? call STXONCCA.strobe() : call STXON.strobe();
if ( !( status & CC2420_STATUS_TX_ACTIVE ) ) {
status = call SNOP.strobe();
if ( status & CC2420_STATUS_TX_ACTIVE )
congestion = FALSE;
}
atomic m_state = congestion ? S_SAMPLE_CCA : S_SFD;
call CSN.set();
if ( congestion ) {
releaseSpiResource();
congestionBackoff();
}
#ifdef PLATFORM_MICAZ
else {
startBackoffTimer(CC2420_ABORT_PERIOD);
}
#endif
}_______________________________________________
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