The status byte returned by the command over SPI is not important in this particular case, so we ignore it intentionally. In order to get a receive() event fired, the radio must be in the proper state, and therefore beginRead() will always succeeds.
The status byte is important when the radio driver is attempting to change the state of the radio, and needs to verify the radio's status. -David -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Liusand Sent: Thursday, March 13, 2008 6:35 PM To: tinyos-help@millennium.berkeley.edu Subject: [Tinyos-help] Question on CC2420ReceiveP.nc in TinyOS 2.0.2 Hi, I noticed that, in CC2420ReceiveP.nc from TinyOS 2.0.2, the receive() function calls RXFIFO.beginRead() without checking its return value. But as stated in CC2420Fifo.nc, beginRead() is supposed to "return status byte returned when sending the last address byte of the SPI transaction". So does this mean the return value is not important and beginRead() will always succeed? Thanks, Sha _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
