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.
65 call polarity_master_init
66 call points_master_init
67 call common_local_init
73 call power_polarising_init
78 ;----------------------------------------
79 master_interrupt_low @
83 call nmra_serialrx_intrl
84 call power_fault_intrl
87 call points_local_intrl
91 ;----------------------------------------------------------------------
92 serialrx_table_section code 0x2000
96 ;command_<something> has same calling convention:
98 ; FSR0 -> start of message undefined
99 ; *FSR0 message undefined
102 bra_n serialrx_if_multibyte
103 bra_z command_crashed
106 bra_z command_power_on
108 bra_z command_power_off
112 serialrx_if_multibyte
113 rr_fw INDF0 ; W = ii MM ww ww ww ww ii ii
114 and_lw 0x3c ; W = zz zz ww ww ww ww zz zz
115 bt_f_if0 PCL, 0 ; always true, but reads PCL
119 goto serialrx_bad ; 1 0000 xxx
120 goto command_ping ; 1 0001 xxx
121 goto command_polarity ; 1 0010 xxx
122 goto command_watchdog ; 1 0011 xxx
123 goto command_point ; 1 0100 xxx
124 goto serialrx_bad ; 1 0101 xxx
125 goto serialrx_bad ; 1 0110 xxx
126 goto serialrx_bad ; 1 0111 xxx
127 goto serialrx_bad ; 1 1000 xxx
128 goto serialrx_bad ; 1 1001 xxx
129 goto serialrx_bad ; 1 1010 xxx
130 goto serialrx_bad ; 1 1011 xxx
131 goto serialrx_bad ; 1 1100 xxx
132 goto serialrx_bad ; 1 1101 xxx
133 goto serialrx_bad ; 1 1110 xxx
134 goto serialrx_bad ; 1 1111 xxx
142 ;--------------------
148 bra_n command_ping_bad
149 goto serial_addbyte_another
151 command_ping_bad panic morse_HP
153 ;======================================================================
156 ;----------------------------------------
158 ; Slave-specific initialisation.
166 call common_local_init
167 call detect_slave_init
170 ;----------------------------------------
171 slave_interrupt_low @
173 call points_local_intrl
176 ;----------------------------------------
181 ;----------------------------------------
186 bra i2csu_write_if_special
188 bra polarity_local_do
195 i2csu_write_if_special
197 bra i2csu_write_if_bad
198 goto panic_crashread_commanded
201 ;======================================================================
202 ; MASTER/SLAVE deviations
206 ; Either transmits the message to the master, or if we are the master,
207 ; handles it as an incoming message from the notional `slave 0'.
208 ; W message unchanged
210 bt_f_if0 idloc1,idloc1_master
211 goto slave_add_short_message
212 goto loopback_read_byte
214 ;======================================================================