Hello,
I am using a modified version of BlinkToRadio for my
experiments and I would like to have the rssi & lqi from
the packet. I have a receive event like this:
event message_t* Receive.receive(message_t* msg, void*
payload, uint8_t len) {
if (len == sizeof(BlinkToRadioMsg)) {
...
MsgArr[rcvCntr].nodeid = btrpkt->nodeid;
// MsgArr[rcvCntr].counter = -50 * 3 *
(msg->metadata[1]/1024) - 45.5;
MsgArr[rcvCntr].counter = msg->metadata[1] - 45;
rcvCntr++;
}
return msg;
}
I notice that message_t is like this:
typedef nx_struct message_t {
nx_uint8_t header[sizeof(message_header_t)];
nx_uint8_t data[TOSH_DATA_LENGTH];
nx_uint8_t footer[sizeof(message_footer_t)];
nx_uint8_t metadata[sizeof(message_metadata_t)];
} message_t;
and metadata looks like this:
typedef nx_struct cc2420_metadata_t {
nx_uint8_t tx_power;
nx_uint8_t rssi;
nx_uint8_t lqi;
nx_bool crc;
nx_bool ack;
nx_uint16_t time;
} cc2420_metadata_t;
So can I just access these things out of the metadata array
like this:
msg->metadata[1]; // for rssi
msg->metadata[2]; // for lqi
Also what is with all of these formulas? I read the
datasheet and I understand the formula. What is not clear
is if I need to use it or not. Am I reading the raw ADC?
Am I reading anything at all?
Daniel M. Havey
Academic Resume:
http://myprofile.cos.com/dhavey
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