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CC2500-SimpleRX.spin2
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CC2500-SimpleRX.spin2
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{
--------------------------------------------
Filename: CC2500-SimpleRX.spin2
Author: Jesse Burt
Description: Simple receive demo of the cc2500 driver (P2 version)
Copyright (c) 2023
Started Nov 29, 2020
Updated Jul 16, 2023
See end of file for terms of use.
--------------------------------------------
}
CON
_clkfreq = cfg._clkfreq_def
_xtlfreq = cfg._xtlfreq
' -- User-modifiable constants
NODE_ADDRESS = $01 ' this node's address (1..254)
' --
POS_TONODE = 0
POS_PAYLD = 1
MAX_PAYLD = 255
OBJ
cfg: "boardcfg.p2eval"
str: "string"
ser: "com.serial.terminal.ansi" | SER_BAUD=2_000_000
cc2500: "wireless.transceiver.cc2500" | CS=0, SCK=1, MOSI=2, MISO=3, SPI_FREQ=6_500_000, PPB=0
' PPB: optional CC2500 crystal offset correction
VAR
byte _pkt_tmp[MAX_PAYLD]
byte _recv[MAX_PAYLD]
byte _pktlen
PUB main() | tmp, rxbytes
setup()
cc2500.preset_robust1() ' use preset settings
cc2500.carrier_freq(2_401_000) ' set carrier frequency
cc2500.node_addr(NODE_ADDRESS) ' this node's address
ser.clear()
ser.pos_xy(0, 0)
ser.printf(@"Receive mode - %dkHz\n\r", cc2500.carrier_freq())
repeat
bytefill(@_pkt_tmp, $00, MAX_PAYLD) ' clear out buffers
bytefill(@_recv, $00, MAX_PAYLD)
cc2500.rx_mode() ' set to receive mode
repeat until cc2500.fifo_rx_bytes() >= 1' wait for first recv'd bytes
cc2500.rx_payld(1, @rxbytes) ' get length of recv'd payload
' (1st byte of packet in
' default variable-length
' packet mode)
repeat until cc2500.fifo_rx_bytes() >= rxbytes
cc2500.rx_payld(rxbytes, @_pkt_tmp) ' now, read that many bytes
cc2500.flush_rx() ' flush receive buffer
{ show the packet received as a simple hex dump }
ser.pos_xy(0, 3)
ser.hexdump(@_pkt_tmp, 0, 2, strsize(@_pkt_tmp), 16 <# strsize(@_pkt_tmp))
ser.strln(@" | |")
ser.strln(@" | *- start of payload/data")
ser.strln(@" *---- address packet was sent to")
PUB setup()
ser.start()
ser.clear()
ser.strln(@"Serial terminal started")
if ( cc2500.start() )
ser.strln(@"CC2500 driver started")
else
ser.strln(@"CC2500 driver failed to start - halting")
repeat
DAT
{
Copyright 2024 Jesse Burt
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
}