; We have an interrupt:
;...
i2cm_interrupt_definite
- bs_f xdebug+0, 5
mov_ff SSPSTAT, sspstat
mov_ff SSPCON1, sspcon1
mov_ff SSPCON2, sspcon2
; W slave number any
; slave any slave_number
; expects to return directly to main program (caller)
- bs_f xdebug+0, 2
mov_wf slave
bs_f SSPCON2, SEN
m_start_or_restart
;----------
m_event_done_addressing
bt_f_if1 sspcon2, ACKSTAT
- bra m_bad_address_ack
+ bra m_no_address_ack
; OK, we got ack.
bc_f st, st_addressing
goto i2cmu_done
;----------
-m_bad_address_ack
- i2cpanic morse_SK
+m_no_address_ack
+ bt_f_if0 st, st_reading
+ bra m_bad_no_address_ack_write
+ clr_f st
+ rcall m_stop
+ goto i2cmu_slave_no_ack
+
+m_bad_no_address_ack_write
+ panic morse_SW
;========================================
; MASTER - WRITING
; At call On return
; State Idle/Reading-Wait Writing-Setup
; W slave number any
- bs_f xdebug+0, 1
tst_f_ifnz st
bra m_write_start_busy
;----------
; Macros: chkvals_start and chkval
-chkvals_start macro what
- mov_fw what
+chkvals_start macro chvals_what
+ mov_fw chvals_what
endm
-chkval macro lastval, value, label
- xor_lw value ^ lastval
- bra_z label
+chkval macro chkval_lastval, chkval_value, chkval_label
+ xor_lw chkval_value ^ chkval_lastval
+ bra_z chkval_label
endm
near_i2csu code
include program+externs.fin
include i2clib.inc
- include variables+vars.fin
-
end