1 ;======================================================================
2 ; MAIN PROGRAM AND GLUE
7 ;======================================================================
8 ; COMMON TO MASTER AND SLAVE
10 ;----------------------------------------
26 bs_f RCON, IPEN ; interrupt priorities
31 bt_f_if0 idloc1,idloc1_master
34 bt_f_if1 idloc1,idloc1_master
40 bt_f_if1 idloc1,idloc1_master
41 goto backgroundloop_master
42 bt_f_if1 idloc1,idloc1_boarddet
43 goto backgroundloop_detectors
44 goto backgroundloop_reversers
48 ; called by {master,slave}_init immediately after they've init'd i2c.
52 call points_local_init
53 call polarity_local_init
54 call detect_local_init
57 ;----------------------------------------
64 intrl_handled_routine @
65 mov_ff isr_low_save_stkptr, STKPTR
68 ;======================================================================
71 ;----------------------------------------
73 ; Master-specific initialisation.
77 call polarity_master_init
78 call points_master_init
79 call common_local_init
84 call power_polarising_init
88 ;----------------------------------------
89 master_interrupt_low @
91 mov_ff INTCON, xdebug+0
92 mov_ff INTCON2, xdebug+1
93 mov_ff INTCON3, xdebug+2
98 call nmra_serialrx_intrl
99 call power_fault_intrl
100 call serialtxfc_intrl
102 call points_local_intrl
106 ;----------------------------------------------------------------------
107 serialrx_table_section code 0x2000
109 ;--------------------
110 serialrx_generalmsg @
111 ;command_<something> has same calling convention:
113 ; FSR0 -> start of message undefined
114 ; *FSR0 message undefined
117 bra_n serialrx_if_multibyte
118 bra_z command_crashed
121 bra_z command_power_on
123 bra_z command_power_off
127 serialrx_if_multibyte
128 rr_fw INDF0 ; W = ii MM ww ww ww ww ii ii
129 and_lw 0x3c ; W = zz zz ww ww ww ww zz zz
130 bt_f_if0 PCL, 0 ; always true, but reads PCL
134 goto serialrx_bad ; 1 0000 xxx
135 goto command_ping ; 1 0001 xxx
136 goto command_polarity ; 1 0010 xxx
137 goto serialrx_bad ; 1 0011 xxx
138 goto command_point ; 1 0100 xxx
139 goto serialrx_bad ; 1 0101 xxx
140 goto serialrx_bad ; 1 0110 xxx
141 goto serialrx_bad ; 1 0111 xxx
142 goto serialrx_bad ; 1 1000 xxx
143 goto serialrx_bad ; 1 1001 xxx
144 goto serialrx_bad ; 1 1010 xxx
145 goto serialrx_bad ; 1 1011 xxx
146 goto serialrx_bad ; 1 1100 xxx
147 goto serialrx_bad ; 1 1101 xxx
148 goto serialrx_bad ; 1 1110 xxx
149 goto serialrx_bad ; 1 1111 xxx
157 ;--------------------
163 bra_n command_ping_bad
164 goto serial_addbyte_another
166 command_ping_bad panic morse_HP
168 ;======================================================================
171 ;----------------------------------------
173 ; Slave-specific initialisation.
179 call common_local_init
180 call detect_slave_init
183 ;----------------------------------------
184 slave_interrupt_low @
186 call points_local_intrl
189 ;----------------------------------------
194 ;----------------------------------------
199 bra i2csu_write_if_special
201 bra polarity_local_do
208 i2csu_write_if_special
210 bra i2csu_write_if_bad
211 goto panic_crashread_commanded
214 ;======================================================================
215 ; MASTER/SLAVE deviations
219 ; Either transmits the message to the master, or if we are the master,
220 ; handles it as an incoming message from the notional `slave 0'.
221 ; W message unchanged
223 bt_f_if0 idloc1,idloc1_master
224 goto slave_add_short_message
225 goto loopback_read_byte
227 ;======================================================================