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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	2dde134c	Tom Mullins	timeout.tv_sec = 0;
28			timeout.tv_usec = MB_TIMEOUT_MS * 1000;
29			modbus_set_response_timeout(ctx, &timeout);
30
31	14688426	Tom Mullins	modbus_get_response_timeout(ctx, &timeout);
32	5e03b78d	Tom Mullins	log_print("Modbus response timeout is %lus %luus",
33			timeout.tv_sec, timeout.tv_usec);
34	14688426	Tom Mullins
35	7bdb98c5	Tom Mullins	return 0;
36			}
37
38			void tool_close_mb() {
39			modbus_close(ctx);
40			modbus_free(ctx);
41			}
42
43			static void tool_write_coil(int addr, int bit) {
44			if (modbus_write_bit(ctx, addr, bit) == -1) {
45	5e03b78d	Tom Mullins	log_print("ERROR: modbus_write_bit: %s", modbus_strerror(errno));
46	7bdb98c5	Tom Mullins	}
47			}
48
49			static void tool_init(struct tool_t *tool) {
50			// TODO write current limit values
51			tool_write_coil(MB_COIL_INIT, 1);
52			tool->state = TS_OFF;
53			}
54
55	3811693d	Tom Mullins	static void tool_read_user(struct tool_t *tool) {
56	7bdb98c5	Tom Mullins	unsigned short serno[2];
57	14688426	Tom Mullins	if (modbus_read_input_registers(ctx, MB_INP_SERNOL, 2, serno) == -1) {
58	5e03b78d	Tom Mullins	log_print("ERROR: modbus_read_registers: %s", modbus_strerror(errno));
59	7bdb98c5	Tom Mullins	tool->user = 0;
60			} else {
61			tool->user = MODBUS_GET_INT32_FROM_INT16(serno, 0);
62			}
63			}
64
65			static void tool_grant_access(struct tool_t *tool) {
66	38df0012	Tom Mullins
67	5e03b78d	Tom Mullins	log_print("Granting access to %08x on %s (%d)", tool->user, tool->name,
68	15fa09f7	Tom Mullins	tool->address);
69	38df0012	Tom Mullins
70	7bdb98c5	Tom Mullins	tool_write_coil(MB_COIL_EN, 1);
71	dc472500	Tom Mullins	tool->state = TS_ON;
72	38df0012	Tom Mullins
73	75cef49f	Tom Mullins	tool->event = event_alloc();
74			tool->event->user = tool->user;
75			tool->event->tool_id = tool->address;
76			tool->event->tstart = time(NULL);
77	38df0012	Tom Mullins	tool->event->succ = 1;
78	7bdb98c5	Tom Mullins	}
79
80			static void tool_deny_access(struct tool_t *tool) {
81	38df0012	Tom Mullins	struct event_t *event;
82
83	5e03b78d	Tom Mullins	log_print("Denying access to %08x on %s (%d)", tool->user, tool->name,
84	15fa09f7	Tom Mullins	tool->address);
85	38df0012	Tom Mullins
86	7bdb98c5	Tom Mullins	tool_write_coil(MB_COIL_EN, 0);
87	dc472500	Tom Mullins	tool->state = TS_OFF;
88	38df0012	Tom Mullins
89			event = event_alloc();
90			event->user = tool->user;
91			event->tool_id = tool->address;
92			event->tstart = time(NULL);
93			event->tend = event->tstart;
94			event->succ = 0;
95			event_q_push(event);
96	7bdb98c5	Tom Mullins	}
97
98	75cef49f	Tom Mullins	static void tool_off(struct tool_t *tool) {
99			tool->state = TS_OFF;
100			tool->event->tend = time(NULL);
101			event_q_push(tool->event);
102			tool->event = NULL;
103			}
104
105	7bdb98c5	Tom Mullins	void tool_request_disable(struct tool_t *tool) {
106	cc7646f9	Tom Mullins	if (tool->state == TS_ON) {
107			log_print("Requesting disable on %s (%d)", tool->name, tool->address);
108			tool_write_coil(MB_COIL_REQ_DIS, 1);
109			tool->state = TS_REQ_DIS;
110			}
111	7bdb98c5	Tom Mullins	}
112
113			void tool_poll(struct tool_t *tool) {
114			unsigned char status[N_COILS];
115
116	14688426	Tom Mullins	if (modbus_set_slave(ctx, tool->address) == -1) {
117	5e03b78d	Tom Mullins	log_print("ERROR: modbus_set_slave: %s", modbus_strerror(errno));
118	7bdb98c5	Tom Mullins	}
119
120	15fa09f7	Tom Mullins	/* If we can't read from the tool, we only want this error message to print
121			* once, thus tool->connected */
122	7bdb98c5	Tom Mullins	if (modbus_read_bits(ctx, 0, N_COILS, status) == -1) {
123	15fa09f7	Tom Mullins	if (tool->connected) {
124	5e03b78d	Tom Mullins	log_print("Cannot connect to %s (%d): %s", tool->name,
125	15fa09f7	Tom Mullins	tool->address, modbus_strerror(errno));
126			tool->connected = 0;
127			}
128	7bdb98c5	Tom Mullins	return;
129	15fa09f7	Tom Mullins	} else if (!tool->connected) {
130	5e03b78d	Tom Mullins	log_print("Reconnected to %s (%d)", tool->name, tool->address);
131	15fa09f7	Tom Mullins	tool->connected = 1;
132	7bdb98c5	Tom Mullins	}
133
134	15fa09f7	Tom Mullins	/*uint16_t current;
135			if (modbus_read_input_registers(ctx, MB_INP_CURRENT, 1, &current) == -1) {
136	5e03b78d	Tom Mullins	log_print("ERROR: modbus_read_registers: %s", modbus_strerror(errno));
137	15fa09f7	Tom Mullins	} else {
138			printf("Current: %d\n", current);
139			}*/
140
141	1b054655	Tom Mullins	/*printf("new:%d en:%d req_dis:%d init:%d\n", status[MB_COIL_NEW],
142			status[MB_COIL_EN], status[MB_COIL_REQ_DIS], status[MB_COIL_INIT]);*/
143	dc472500	Tom Mullins
144	7bdb98c5	Tom Mullins	if (!status[MB_COIL_INIT]) {
145			tool->state = TS_INIT;
146			}
147
148			switch (tool->state) {
149
150			case TS_INIT:
151			tool_init(tool);
152			break;
153
154			case TS_OFF:
155			if (status[MB_COIL_NEW]) {
156	3811693d	Tom Mullins	tool_read_user(tool);
157	15fa09f7	Tom Mullins	if (query_user_permission(tool->address, tool->user)) {
158	7bdb98c5	Tom Mullins	tool_grant_access(tool);
159	1b054655	Tom Mullins	} else {
160	7bdb98c5	Tom Mullins	tool_deny_access(tool);
161	1b054655	Tom Mullins	}
162	7bdb98c5	Tom Mullins	}
163			break;
164
165			case TS_ON:
166			if (!status[MB_COIL_EN]) {
167	5e03b78d	Tom Mullins	log_print("Tool %s (%d) is off", tool->name, tool->address);
168	75cef49f	Tom Mullins	tool_off(tool);
169	7bdb98c5	Tom Mullins	}
170			break;
171
172			case TS_REQ_DIS:
173			if (!status[MB_COIL_EN]) {
174	5e03b78d	Tom Mullins	log_print("Tool %s (%d) is off after requested disable", tool->name,
175	15fa09f7	Tom Mullins	tool->address);
176	75cef49f	Tom Mullins	tool_off(tool);
177	7bdb98c5	Tom Mullins	}
178			break;
179
180			}
181
182			}

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root / mainbox / tool.c @ master