Hello All,
Could anybody explain how actually RSSI measured?
I mean where source code in TinyOS for reading of the RSSI.RSSI_VAL register
of the CC2420?
I found only code:
task void receiveDone_task() {
cc2420_header_t* header = getHeader( m_p_rx_buf );
cc2420_metadata_t* metadata = getMetadata( m_p_rx_buf );
uint8_t* buf = (uint8_t*)header;
uint8_t length = buf[ 0 ];
metadata->crc = buf[ length ] >> 7;
metadata->rssi = buf[ length - 1 ];
metadata->lqi = buf[ length ] & 0x7f;
m_p_rx_buf = signal Receive.receive( m_p_rx_buf, m_p_rx_buf->data,
length );
waitForNextPacket();
}
Could you explain why buf[ length - 1 ]; means RSSI ?
Thank you, Aleksandr.
wbr, Sadkov Aleksandr
[EMAIL PROTECTED]
www.sumkino.com
www.wl.unn.ru
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