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1	7bdb98c5	Tom Mullins	#include "tool.h"
2	15fa09f7	Tom Mullins	#include "query.h"
3	75cef49f	Tom Mullins	#include "event.h"
4	5e03b78d	Tom Mullins	#include "log.h"
5	7bdb98c5	Tom Mullins	#include "tooltron_mb.h"
6			#include <modbus.h>
7			#include <stdio.h>
8			#include <errno.h>
9
10			modbus_t *ctx;
11
12			int tool_init_mb(const char *device) {
13	14688426	Tom Mullins	struct timeval timeout;
14
15	7bdb98c5	Tom Mullins	ctx = modbus_new_rtu(device, MB_BAUD, 'N', 8, 1);
16			if (ctx == NULL) {
17	5e03b78d	Tom Mullins	log_print("ERROR: modbus_new_rtu: %s", modbus_strerror(errno));
18	7bdb98c5	Tom Mullins	return 1;
19			}
20
21			if (modbus_connect(ctx) == -1) {
22	5e03b78d	Tom Mullins	log_print("ERROR: modbus_connect: %s", modbus_strerror(errno));
23	7bdb98c5	Tom Mullins	modbus_free(ctx);
24			return 1;
25			}
26
27	14688426	Tom Mullins	modbus_get_response_timeout(ctx, &timeout);
28	5e03b78d	Tom Mullins	log_print("Modbus response timeout is %lus %luus",
29			timeout.tv_sec, timeout.tv_usec);
30	14688426	Tom Mullins
31	7bdb98c5	Tom Mullins	return 0;
32			}
33
34			void tool_close_mb() {
35			modbus_close(ctx);
36			modbus_free(ctx);
37			}
38
39			static void tool_write_coil(int addr, int bit) {
40			if (modbus_write_bit(ctx, addr, bit) == -1) {
41	5e03b78d	Tom Mullins	log_print("ERROR: modbus_write_bit: %s", modbus_strerror(errno));
42	7bdb98c5	Tom Mullins	}
43			}
44
45			static void tool_init(struct tool_t *tool) {
46			// TODO write current limit values
47			tool_write_coil(MB_COIL_INIT, 1);
48			tool->state = TS_OFF;
49			}
50
51	3811693d	Tom Mullins	static void tool_read_user(struct tool_t *tool) {
52	7bdb98c5	Tom Mullins	unsigned short serno[2];
53	14688426	Tom Mullins	if (modbus_read_input_registers(ctx, MB_INP_SERNOL, 2, serno) == -1) {
54	5e03b78d	Tom Mullins	log_print("ERROR: modbus_read_registers: %s", modbus_strerror(errno));
55	7bdb98c5	Tom Mullins	tool->user = 0;
56			} else {
57			tool->user = MODBUS_GET_INT32_FROM_INT16(serno, 0);
58			}
59			}
60
61			static void tool_grant_access(struct tool_t *tool) {
62	38df0012	Tom Mullins
63	5e03b78d	Tom Mullins	log_print("Granting access to %08x on %s (%d)", tool->user, tool->name,
64	15fa09f7	Tom Mullins	tool->address);
65	38df0012	Tom Mullins
66	7bdb98c5	Tom Mullins	tool_write_coil(MB_COIL_EN, 1);
67	dc472500	Tom Mullins	tool->state = TS_ON;
68	38df0012	Tom Mullins
69	75cef49f	Tom Mullins	tool->event = event_alloc();
70			tool->event->user = tool->user;
71			tool->event->tool_id = tool->address;
72			tool->event->tstart = time(NULL);
73	38df0012	Tom Mullins	tool->event->succ = 1;
74	7bdb98c5	Tom Mullins	}
75
76			static void tool_deny_access(struct tool_t *tool) {
77	38df0012	Tom Mullins	struct event_t *event;
78
79	5e03b78d	Tom Mullins	log_print("Denying access to %08x on %s (%d)", tool->user, tool->name,
80	15fa09f7	Tom Mullins	tool->address);
81	38df0012	Tom Mullins
82	7bdb98c5	Tom Mullins	tool_write_coil(MB_COIL_EN, 0);
83	dc472500	Tom Mullins	tool->state = TS_OFF;
84	38df0012	Tom Mullins
85			event = event_alloc();
86			event->user = tool->user;
87			event->tool_id = tool->address;
88			event->tstart = time(NULL);
89			event->tend = event->tstart;
90			event->succ = 0;
91			event_q_push(event);
92	7bdb98c5	Tom Mullins	}
93
94	75cef49f	Tom Mullins	static void tool_off(struct tool_t *tool) {
95			tool->state = TS_OFF;
96			tool->event->tend = time(NULL);
97			event_q_push(tool->event);
98			tool->event = NULL;
99			}
100
101	7bdb98c5	Tom Mullins	void tool_request_disable(struct tool_t *tool) {
102	cc7646f9	Tom Mullins	if (tool->state == TS_ON) {
103			log_print("Requesting disable on %s (%d)", tool->name, tool->address);
104			tool_write_coil(MB_COIL_REQ_DIS, 1);
105			tool->state = TS_REQ_DIS;
106			}
107	7bdb98c5	Tom Mullins	}
108
109			void tool_poll(struct tool_t *tool) {
110			unsigned char status[N_COILS];
111
112	14688426	Tom Mullins	if (modbus_set_slave(ctx, tool->address) == -1) {
113	5e03b78d	Tom Mullins	log_print("ERROR: modbus_set_slave: %s", modbus_strerror(errno));
114	7bdb98c5	Tom Mullins	}
115
116	15fa09f7	Tom Mullins	/* If we can't read from the tool, we only want this error message to print
117			* once, thus tool->connected */
118	7bdb98c5	Tom Mullins	if (modbus_read_bits(ctx, 0, N_COILS, status) == -1) {
119	15fa09f7	Tom Mullins	if (tool->connected) {
120	5e03b78d	Tom Mullins	log_print("Cannot connect to %s (%d): %s", tool->name,
121	15fa09f7	Tom Mullins	tool->address, modbus_strerror(errno));
122			tool->connected = 0;
123			}
124	7bdb98c5	Tom Mullins	return;
125	15fa09f7	Tom Mullins	} else if (!tool->connected) {
126	5e03b78d	Tom Mullins	log_print("Reconnected to %s (%d)", tool->name, tool->address);
127	15fa09f7	Tom Mullins	tool->connected = 1;
128	7bdb98c5	Tom Mullins	}
129
130	15fa09f7	Tom Mullins	/*uint16_t current;
131			if (modbus_read_input_registers(ctx, MB_INP_CURRENT, 1, &current) == -1) {
132	5e03b78d	Tom Mullins	log_print("ERROR: modbus_read_registers: %s", modbus_strerror(errno));
133	15fa09f7	Tom Mullins	} else {
134			printf("Current: %d\n", current);
135			}*/
136
137	1b054655	Tom Mullins	/*printf("new:%d en:%d req_dis:%d init:%d\n", status[MB_COIL_NEW],
138			status[MB_COIL_EN], status[MB_COIL_REQ_DIS], status[MB_COIL_INIT]);*/
139	dc472500	Tom Mullins
140	7bdb98c5	Tom Mullins	if (!status[MB_COIL_INIT]) {
141			tool->state = TS_INIT;
142			}
143
144			switch (tool->state) {
145
146			case TS_INIT:
147			tool_init(tool);
148			break;
149
150			case TS_OFF:
151			if (status[MB_COIL_NEW]) {
152	3811693d	Tom Mullins	tool_read_user(tool);
153	15fa09f7	Tom Mullins	if (query_user_permission(tool->address, tool->user)) {
154	7bdb98c5	Tom Mullins	tool_grant_access(tool);
155	1b054655	Tom Mullins	} else {
156	7bdb98c5	Tom Mullins	tool_deny_access(tool);
157	1b054655	Tom Mullins	}
158	7bdb98c5	Tom Mullins	}
159			break;
160
161			case TS_ON:
162			if (!status[MB_COIL_EN]) {
163	5e03b78d	Tom Mullins	log_print("Tool %s (%d) is off", tool->name, tool->address);
164	75cef49f	Tom Mullins	tool_off(tool);
165	7bdb98c5	Tom Mullins	}
166			break;
167
168			case TS_REQ_DIS:
169			if (!status[MB_COIL_EN]) {
170	5e03b78d	Tom Mullins	log_print("Tool %s (%d) is off after requested disable", tool->name,
171	15fa09f7	Tom Mullins	tool->address);
172	75cef49f	Tom Mullins	tool_off(tool);
173	7bdb98c5	Tom Mullins	}
174			break;
175
176			}
177
178			}

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root / mainbox / tool.c @ ea46eeca