mirror of
https://github.com/bobbimanners/emailler.git
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Made W5100 UDP driver directly callable from C.
This commit is contained in:
Oliver Schmidt
parent
c9af38790a
commit
24a5bcea85
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@ -29,9 +29,9 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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******************************************************************************/
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.export init
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.export recv_init, recv_byte, recv_done
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.export send_init, send_byte, send_done
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.export _w5100_init
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.export _w5100_recv_init, _w5100_recv_byte, _w5100_recv_done
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.export _w5100_send_init, _w5100_send_byte, _w5100_send_done
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ptr := $06 ; 2 byte pointer value
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sha := $08 ; 2 byte physical addr shadow ($F000-$FFFF)
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@ -46,7 +46,7 @@ data := $C0B7
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;------------------------------------------------------------------------------
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init:
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_w5100_init:
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; Input
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; AX: Address of ip_parms (serverip, cfg_ip, cfg_netmask, cfg_gateway)
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; Output
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@ -159,19 +159,18 @@ set_data6502:
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;------------------------------------------------------------------------------
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recv_init:
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_w5100_recv_init:
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; Input
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; None
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; Output
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; C: Clear if ready to receive
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; AX: If C is clear then number of bytes to receive
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; AX: Number of bytes to receive
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; Remark
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; To be called before recv_byte.
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; Socket 1 RX Received Size Register: 0 or volatile ?
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lda #$26 ; Socket RX Received Size Register
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jsr prolog
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bcs :+++
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bne error
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; Socket 1 RX Read Pointer Register
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; -> addr already set
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@ -185,7 +184,7 @@ recv_init:
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clc
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ldx #$05
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stx tmp
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: jsr recv_byte ; Doesn't trash C
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: jsr _w5100_recv_byte ; Doesn't trash C
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ldx tmp
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eor hdr,x ; Doesn't trash C
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beq :+
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@ -195,9 +194,9 @@ recv_init:
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php ; Save C
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; Read data length
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jsr recv_byte ; Hibyte
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jsr _w5100_recv_byte ; Hibyte
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sta len+1
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jsr recv_byte ; Lobyte
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jsr _w5100_recv_byte ; Lobyte
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sta len
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; Add 8 byte header to set pointer advancement
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@ -211,21 +210,20 @@ recv_init:
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; Skip frame if it doesn't originate from our
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; expected communicaion peer
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plp ; Restore C
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bcs recv_done
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bcs _w5100_recv_done
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; Return success with data length
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; Return data length
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lda len
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ldx len+1
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clc
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: rts
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rts
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;------------------------------------------------------------------------------
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send_init:
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_w5100_send_init:
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; Input
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; AX: Number of bytes to send
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; Output
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; C: Clear if ready to send
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; A: Nonzero if ready to send
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; Remark
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; To be called before send_byte.
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@ -236,12 +234,12 @@ send_init:
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; Socket 1 TX Free Size Register: 0 or volatile ?
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lda #$20 ; Socket TX Free Size Register
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jsr prolog
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bcs :+
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bne error
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; Socket 1 TX Free Size Register: < advancement ?
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cpx adv ; Lobyte
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sbc adv+1 ; Hibyte
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bcc sec_rts ; Not enough free size -> error
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bcc error ; Not enough free size
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; Socket 1 TX Write Pointer Register
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ldy #$24
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@ -252,8 +250,16 @@ send_init:
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jsr set_addrphysical
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; Return success
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clc
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: rts
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lda #$01
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ldx #>$0000 ; Required by cc65 C callers
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rts
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;------------------------------------------------------------------------------
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error:
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lda #<$0000
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tax
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rts
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;------------------------------------------------------------------------------
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@ -262,7 +268,7 @@ prolog:
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; Socket 1 Command Register: 0 ?
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jsr set_addrcmdreg1
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ldx data
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bne sec_rts ; Not completed -> error
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bne :++ ; Not completed -> Z = 0
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; Socket Size Register: not 0 ?
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tay ; Select Size Register
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@ -271,23 +277,20 @@ prolog:
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sta ptr+1 ; Hibyte
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ora ptr
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bne :+
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sec_rts:
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sec ; Error (size == 0)
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inx ; -> Z = 0
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rts
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; Socket Size Register: volatile ?
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: jsr get_wordsocket1
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cpx ptr ; Lobyte
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bne sec_rts ; Volatile size -> error
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bne :+ ; Volatile size -> Z = 0
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cmp ptr+1 ; Hibyte
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bne sec_rts ; Volatile size -> error
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clc ; Success (size != 0)
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rts
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; bne :+ ; Volatile size -> Z = 0
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: rts
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;------------------------------------------------------------------------------
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recv_byte:
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_w5100_recv_byte:
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; Input
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; None
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; Output
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@ -301,11 +304,12 @@ recv_byte:
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; Increment physical addr shadow lobyte
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inc sha
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beq incsha
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ldx #>$0000 ; Required by cc65 C callers
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rts
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;------------------------------------------------------------------------------
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send_byte:
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_w5100_send_byte:
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; Input
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; A: Byte to send
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; Output
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@ -325,11 +329,12 @@ incsha:
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; Increment physical addr shadow hibyte
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inc sha+1
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beq set_addrbase
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ldx #>$0000 ; Required by cc65 C callers (_w5100_recv_byte)
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rts
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;------------------------------------------------------------------------------
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recv_done:
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_w5100_recv_done:
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; Input
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; None
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; Output
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@ -346,7 +351,7 @@ recv_done:
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;------------------------------------------------------------------------------
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send_done:
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_w5100_send_done:
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; Input
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; None
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; Output
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@ -377,8 +382,9 @@ epilog:
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tya ; Restore command
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jsr set_addrcmdreg1
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sta data
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sec ; When coming from recv_init -> error
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rts
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; Return error (_w5100_recv_init)
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bne error ; Always
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;------------------------------------------------------------------------------
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@ -398,6 +404,7 @@ set_addrphysical:
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set_addr:
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stx addr ; Hibyte
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sty addr+1 ; Lobyte
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ldx #>$0000 ; Required by cc65 C callers (_w5100_recv_byte)
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rts
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;------------------------------------------------------------------------------
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@ -118,7 +118,7 @@ ip65demo.dsk: httpd.bin httpd-slotscan.bin
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java -jar $(AC) -cc65 $@ webserver-slot3 B < httpd.bin
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java -jar $(AC) -cc65 $@ webserver-slotscan B < httpd-slotscan.bin
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w5100_%.bin: ../supplement/w5100_%.s w5100_%_s.s w5100_%_c.c
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w5100_%.bin: ../supplement/w5100_%.s w5100_%_main.c
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cl65 -o $@ -t apple2enh -m $(basename $@).map $^
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w5100.dsk: w5100_udp.bin
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@ -1,15 +1,15 @@
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#include <stdio.h>
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#include <conio.h>
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void __fastcall__ init(void *parms);
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void __fastcall__ w5100_init(void *parms);
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unsigned recv_init(void);
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unsigned char recv_byte(void);
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void recv_done(void);
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unsigned int w5100_recv_init(void);
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unsigned char w5100_recv_byte(void);
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void w5100_recv_done(void);
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unsigned __fastcall__ send_init(unsigned len);
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void __fastcall__ send_byte(unsigned char val);
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void send_done(void);
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unsigned char __fastcall__ w5100_send_init(unsigned int len);
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void __fastcall__ w5100_send_byte(unsigned char val);
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void w5100_send_done(void);
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struct
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{
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@ -32,7 +32,7 @@ void main(void)
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videomode(VIDEOMODE_80COL);
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printf("Init\n");
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init(&parms);
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w5100_init(&parms);
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printf("(S)end or e(X)it\n");
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do
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@ -57,19 +57,19 @@ void main(void)
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parms.serverip[1],
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parms.serverip[2],
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parms.serverip[3]);
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while (!send_init(len))
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while (!w5100_send_init(len))
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{
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printf("!");
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}
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for (i = 0; i < len; ++i)
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{
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send_byte(i);
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w5100_send_byte(i);
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}
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send_done();
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w5100_send_done();
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printf(".\n");
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}
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len = recv_init();
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len = w5100_recv_init();
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if (len)
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{
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unsigned i;
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@ -84,9 +84,9 @@ void main(void)
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{
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printf("\n$%04X:", i);
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}
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printf(" %02X", recv_byte());
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printf(" %02X", w5100_recv_byte());
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}
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recv_done();
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w5100_recv_done();
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printf(".\n");
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}
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}
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@ -1,41 +0,0 @@
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.export _init
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.export _recv_init, _recv_byte, _recv_done
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.export _send_init, _send_byte, _send_done
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.import init
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.import recv_init, recv_byte, recv_done
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.import send_init, send_byte, send_done
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_init:
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jmp init
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_recv_init:
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jsr recv_init
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bcc :+
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lda #<$0000
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ldx #>$0000
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: rts
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_recv_byte:
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jsr recv_byte
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ldx #>$0000
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rts
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_recv_done:
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jmp recv_done
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_send_init:
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jsr send_init
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bcc :+
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lda #<$0000
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ldx #>$0000
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rts
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: lda #<$0001
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ldx #>$0001
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rts
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_send_byte:
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jmp send_byte
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_send_done:
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jmp send_done
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