89 lines
2.4 KiB
Forth
Executable File
89 lines
2.4 KiB
Forth
Executable File
\ ############################################################################
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\ # fds.fth - This program implements a full duplex serial port. It is base
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\ # on the FullDuplexSerial Spin object.
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\ #
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\ # Copyright (c) 2012 Dave Hein
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\ # MIT Licensed
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\ ############################################################################
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0 value fds_cog
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create fds_vars 68 allot
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: fds_var create , does> @ fds_vars + ;
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0 fds_var rx_head
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4 fds_var rx_tail
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8 fds_var tx_head
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12 fds_var tx_tail
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16 fds_var rx_pin
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20 fds_var tx_pin
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24 fds_var rxtx_mode
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28 fds_var bit_ticks
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32 fds_var buffer_ptr
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36 fds_var rx_buffer
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52 fds_var tx_buffer
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hex
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create fds_entry
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a0bca9f0 , 80fca810 , 08bcaa54 , a0fcb201 , 2cbcb255 , 80fca804 , 08bcaa54 ,
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a0fcbe01 , 2cbcbe55 , 80fca804 , 08bcae54 , 80fca804 , 08bcb054 , 80fca804 ,
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08bcb454 , a0bcc05a , 80fcc010 , 627cae04 , 617cae02 , 689be85f , 68abec5f ,
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a0fcc833 , 5cbcbc64 , 627cae01 , 613cb3f2 , 5c640016 , a0fcb809 , a0bcba58 ,
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28fcba01 , 80bcbbf1 , 80bcba58 , 5cbcbc64 , a0bca85d , 84bca9f1 , c17ca800 ,
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5c4c001f , 613cb3f2 , 30fcb601 , e4fcb81e , 28fcb617 , 60fcb6ff , 627cae01 ,
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6cd4b6ff , 08bcabf0 , 80bcaa5a , 003cb655 , 84bcaa5a , 80fcaa01 , 60fcaa0f ,
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083cabf0 , 5c7c0016 , 5cbcc85e , a0bca9f0 , 80fca808 , 08bcaa54 , 80fca804 ,
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08bcac54 , 863caa56 , 5c680033 , 80bcac60 , 00bcc256 , 84bcac60 , 80fcac01 ,
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60fcac0f , 083cac54 , 68fcc300 , 2cfcc202 , 68fcc201 , a0fcc40b , a0bcc7f1 ,
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627cae04 , 617cae02 , 6ce0c201 , 29fcc201 , 70abe85f , 7497ec5f , 80bcc658 ,
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5cbcc85e , a0bca863 , 84bca9f1 , c17ca800 , 5c4c004d , e4fcc446 , 5c7c0033 ,
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decimal
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: fds_start ( rxpin txpin mode baudrate ... )
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>r
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fds_vars 16 0 fill
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rxtx_mode ! tx_pin ! rx_pin !
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clkfreq@ r> / bit_ticks !
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rx_buffer buffer_ptr !
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0 dira!
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fds_entry rx_head cognew
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1+ dup to fds_cog
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;
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: fds_stop fds_cog if fds_cog 1- cogstop 0 to fds_cog then ;
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: fds_rxcheck rx_tail @ rx_head @ 2dup . . cr =
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if
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-1
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else
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rx_tail @ rx_buffer + c@
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rx_tail @ 1+ 15 and rx_tail !
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then
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;
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: fds_rx begin fds_rxcheck dup -1 = while drop repeat ;
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: fds_tx begin tx_tail @ tx_head @ 1+ 15 and <> until
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tx_head @ tx_buffer + c!
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tx_head @ 1+ 15 and tx_head !
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rxtx_mode @ 8 and if fds_rx then
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;
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: fdstest
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." Type 'q' to quit" cr
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31 30 0 115200 fds_start
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drop
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begin
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fds_rx
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dup [char] q <>
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while
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[char] < fds_tx fds_tx [char] > fds_tx
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repeat
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drop
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fds_stop
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1 30 lshift dira!
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;
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