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
100 serialrx_generalmsg @
101 ;command_<something> has same calling convention:
103 ; FSR0 -> start of message undefined
104 ; *FSR0 message undefined
107 bra_n serialrx_if_multibyte
108 bra_z command_crashed
111 bra_z command_power_on
113 bra_z command_power_off
115 bra_z command_tellmode
119 serialrx_if_multibyte
120 rr_fw INDF0 ; W = ii MM ww ww ww ww ii ii
121 and_lw 0x3c ; W = zz zz ww ww ww ww zz zz
122 bt_f_if0 PCL, 0 ; always true, but reads PCL
126 goto serialrx_bad ; 1 0000 xxx
127 goto command_ping ; 1 0001 xxx
128 goto command_polarity ; 1 0010 xxx
129 goto command_watchdog ; 1 0011 xxx
130 goto command_point ; 1 0100 xxx
131 goto serialrx_bad ; 1 0101 xxx
132 goto serialrx_bad ; 1 0110 xxx
133 goto serialrx_bad ; 1 0111 xxx
134 goto serialrx_bad ; 1 1000 xxx
135 goto serialrx_bad ; 1 1001 xxx
136 goto serialrx_bad ; 1 1010 xxx
137 goto serialrx_bad ; 1 1011 xxx
138 goto serialrx_bad ; 1 1100 xxx
139 goto serialrx_bad ; 1 1101 xxx
140 goto serialrx_bad ; 1 1110 xxx
141 goto serialrx_bad ; 1 1111 xxx
149 ;--------------------
155 bra_n command_ping_bad
156 goto serial_addbyte_another
158 command_ping_bad panic morse_HP
160 ;======================================================================
163 ;----------------------------------------
165 ; Slave-specific initialisation.
173 call common_local_init
174 call detect_slave_init
177 ;----------------------------------------
178 slave_interrupt_low @
180 call points_local_intrl
183 ;----------------------------------------
188 ;----------------------------------------
193 bra i2csu_write_if_special
195 bra polarity_local_do
202 i2csu_write_if_special
204 bra i2csu_write_if_bad
205 goto panic_crashread_commanded
208 ;======================================================================
209 ; MASTER/SLAVE deviations
213 ; Either transmits the message to the master, or if we are the master,
214 ; handles it as an incoming message from the notional `slave 0'.
215 ; W message unchanged
217 bt_f_if0 idloc1,idloc1_master
218 goto slave_add_short_message
219 goto loopback_read_byte
221 ;======================================================================