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

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root / mainbox / tool.c @ cce97007