Hi All,
I know from cc2420 datasheet that during the transmission of a packet the
fsd pin must be kept high. Two questions regarding the sendPacket function:
1) where the sfd is set high
2) why the use of TOSH_uwait(450) instead of while
(TOSH_READ_CC_SFD_PIN()){}; only?
void sendPacket() {
uint8_t status;
call HPLChipcon.cmd(CC2420_STXONCCA);
status = call HPLChipcon.cmd(CC2420_SNOP);
if ((status >> CC2420_TX_ACTIVE) & 0x01) {
TOSH_uwait(450); // ~ 400 usec delay until SFD goes high!!!
while (TOSH_READ_CC_SFD_PIN()){}; // wait until SFD pin goes low
atomic stateRadio = POST_TX_STATE;
// other code lines
thanks
Bob
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