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89 lines
1.3 KiB
89 lines
1.3 KiB
#include "libmftypes.h"
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#include "libmfradio.h"
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#define RADIO 5031
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#include "radiodefs.h"
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#if defined(SDCC)
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__reentrantb void radio_readfifo(uint8_t __generic *ptr, uint8_t len) __reentrant __naked
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{
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ptr;
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len;
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__asm;
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mov a,sp
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add a,#-2
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mov r0,a
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mov a,@r0
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jz nodata$
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mov r7,a
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jb _B_7,codeptr$ ; >0x80 code
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jnb _B_6,xdataptr$ ; <0x40 far
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mov r0,dpl
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mov dptr,#(AX8052_RADIOBASE | FDATA)
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jb _B_5,pdataptr$ ; >0x60 pdata
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idataloop$:
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movx a,@dptr
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mov @r0,a
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inc r0
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djnz r7,idataloop$
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nodata$:
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ret
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pdataptr$:
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pdataloop$:
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movx a,@dptr
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movx @r0,a
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inc r0
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djnz r7,pdataloop$
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ret
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xdataptr$:
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mov a,#0x80
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anl a,_IE
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mov r5,a
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clr _EA
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mov r6,_XPAGE
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mov _XPAGE,#((AX8052_RADIOBASE | FDATA) >> 8)
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mov r0,#(AX8052_RADIOBASE | FDATA)
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xdataloop$:
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movx a,@r0
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movx @dptr,a
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inc dptr
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djnz r7,xdataloop$
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mov _XPAGE,r6
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mov a,r5
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orl _IE,a
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ret
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codeptr$:
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mov a,#0x80
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anl a,_IE
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mov r5,a
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clr _EA
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mov r6,_XPAGE
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mov _XPAGE,#((AX8052_RADIOBASE | FDATA) >> 8)
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mov r0,#(AX8052_RADIOBASE | FDATA)
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codeloop$:
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movx a,@r0
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;movc @dptr,a
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inc dptr
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djnz r7,codeloop$
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mov _XPAGE,r6
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mov a,r5
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orl _IE,a
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ret
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__endasm;
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}
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#else
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__reentrantb void radio_readfifo(uint8_t __generic *ptr, uint8_t len) __reentrant
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{
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if (!len)
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return;
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do {
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*ptr++ = *(const uint8_t __xdata *)(AX8052_RADIOBASE | FDATA);
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} while (--len);
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}
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#endif
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