; ====================== I2C2scsn.asm ==================
;
; I2C master test programs
; -- last modified: 11:30 / 17-Nov-2005 / V.Angelov
;
; ======================================================

; set the traceon for easier debugging, this makes the code longer
;#def traceon = 1

; DEFINITIONS, USED IN THE PROGRAM CODE:

; TCK is bit 0, TMS is bit 1, TDI/O is bit 2, TMS used as SDA

#def msk_ssda   =  b010;    -- mask for setting SDA=1
#def msk_csda   =  b101;    -- mask for clearing SDA
#def pos_sdai   = -2;       -- data input, TDO
#def msk_sscl   =  b001;    -- mask for setting SCL=1
#def msk_cscl   =  b110;    -- mask for clearing SCL

#def ioaddr     = r14 ; contains the autoincrementing address of I/O operations through GIO
#def ramaddr    = r15 ; autoincrement address for RAM-access

#def return1    = r8  ; return address level 1 (top)
#def return2    = r9  ;
#def return3    = r10 ;

#def read_buff  = srv_outdata; -- DBANK | DMEM | IMEM3
#def write_buff = srv_indata;  -- DBANK | DMEM | IMEM3
#def timeout    =     50; -- times the timedelay, was 1
#def timedelay  =    200; -- 40 for 1 us, 18 is the lower limit

#def deb_reg    = r13;
#def dev_addr   = r0;
#def start_addr = r1;
#def nbytes     = r2;
#def i2data     = r3;

#def wrk        = r4;
#def ibit       = r5;
#def wrk1cs     = r6;   -- used in clear/set routines
#def wrk2cs     = r7;
#def timeoutcnt = r11;  -- time out counter

#inc "I2C2scsn.asm"
#inc "I2Clib.asm"