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

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root / mainbox / tool.c @ 5305e5e7