1 ;======================================================================
2 ; MAIN PROGRAM AND GLUE
7 ;======================================================================
8 ; COMMON TO MASTER AND SLAVE
10 ;----------------------------------------
13 bs_f RCON, IPEN ; interrupt priorities
17 bt_f_if0 idloc1,idloc1_master
20 bt_f_if1 idloc1,idloc1_master
26 bt_f_if1 idloc1,idloc1_master
27 goto backgroundloop_master
28 bt_f_if1 idloc1,idloc1_boarddet
29 goto backgroundloop_detectors
30 goto backgroundloop_reversers
34 ; called by {master,slave}_init immediately after they've init'd i2c.
38 call points_local_init
39 call polarity_local_init
40 call detect_local_init
43 ;----------------------------------------
50 intrl_handled_routine @
51 mov_ff isr_low_save_stkptr, STKPTR
54 ;======================================================================
57 ;----------------------------------------
59 ; Master-specific initialisation.
67 call polarity_master_init
68 call points_master_init
69 call common_local_init
75 call power_polarising_init
84 ;----------------------------------------
85 master_interrupt_low @
94 call nmra_serialrx_intrl
96 call power_fault_intrl
102 call points_local_intrl
108 ;----------------------------------------------------------------------
109 serialrx_table_section code 0x2000
111 ;--------------------
112 serialrx_generalmsg @
113 ;command_<something> has same calling convention:
115 ; FSR0 -> start of message undefined
116 ; *FSR0 message undefined
119 bra_n serialrx_if_multibyte
120 bra_z command_crashed
123 bra_z command_power_on
125 bra_z command_power_off
129 serialrx_if_multibyte
130 rr_fw INDF0 ; W = ii MM ww ww ww ww ii ii
131 and_lw 0x3c ; W = zz zz ww ww ww ww zz zz
132 bt_f_if0 PCL, 0 ; always true, but reads PCL
136 goto serialrx_bad ; 1 0000 xxx
137 goto command_ping ; 1 0001 xxx
138 goto command_polarity ; 1 0010 xxx
139 goto command_watchdog ; 1 0011 xxx
140 goto command_point ; 1 0100 xxx
141 goto serialrx_bad ; 1 0101 xxx
142 goto serialrx_bad ; 1 0110 xxx
143 goto serialrx_bad ; 1 0111 xxx
144 goto serialrx_bad ; 1 1000 xxx
145 goto serialrx_bad ; 1 1001 xxx
146 goto serialrx_bad ; 1 1010 xxx
147 goto serialrx_bad ; 1 1011 xxx
148 goto serialrx_bad ; 1 1100 xxx
149 goto serialrx_bad ; 1 1101 xxx
150 goto serialrx_bad ; 1 1110 xxx
151 goto serialrx_bad ; 1 1111 xxx
159 ;--------------------
165 bra_n command_ping_bad
167 goto serial_addbyte_another
169 command_ping_bad panic morse_HP
171 ;======================================================================
174 ;----------------------------------------
176 ; Slave-specific initialisation.
184 call common_local_init
185 call detect_slave_init
188 ;----------------------------------------
189 slave_interrupt_low @
191 call points_local_intrl
194 ;----------------------------------------
199 ;----------------------------------------
204 bra i2csu_write_if_special
206 bra polarity_local_do
213 i2csu_write_if_special
215 bra i2csu_write_if_bad
216 goto panic_crashread_commanded
219 ;======================================================================
220 ; MASTER/SLAVE deviations
224 ; Either transmits the message to the master, or if we are the master,
225 ; handles it as an incoming message from the notional `slave 0'.
226 ; W message unchanged
228 bt_f_if0 idloc1,idloc1_master
229 goto slave_add_short_message
230 goto loopback_read_byte
232 ;======================================================================