1 /*
2 * Copyright (c) 2020 Henrik Brix Andersen <henrik@brixandersen.dk>
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 /**
8 * @file
9 * @brief DAC shell commands.
10 */
11
12 #include <zephyr/shell/shell.h>
13 #include <zephyr/drivers/dac.h>
14 #include <stdlib.h>
15
16 struct args_index {
17 uint8_t device;
18 uint8_t channel;
19 uint8_t value;
20 uint8_t resolution;
21 uint8_t options;
22 };
23
24 static const struct args_index args_indx = {
25 .device = 1,
26 .channel = 2,
27 .value = 3,
28 .resolution = 3,
29 .options = 4,
30 };
31
cmd_setup(const struct shell * sh,size_t argc,char ** argv)32 static int cmd_setup(const struct shell *sh, size_t argc, char **argv)
33 {
34 struct dac_channel_cfg cfg = {0};
35 const struct device *dac;
36 int argidx;
37 int err;
38
39 dac = shell_device_get_binding(argv[args_indx.device]);
40 if (!dac) {
41 shell_error(sh, "DAC device not found");
42 return -EINVAL;
43 }
44
45 cfg.channel_id = strtoul(argv[args_indx.channel], NULL, 0);
46 cfg.resolution = strtoul(argv[args_indx.resolution], NULL, 0);
47
48 argidx = args_indx.options;
49 while (argidx < argc && strncmp(argv[argidx], "-", 1) == 0) {
50 if (strcmp(argv[argidx], "-b") == 0) {
51 cfg.buffered = true;
52 argidx++;
53 } else if (strcmp(argv[argidx], "-i") == 0) {
54 cfg.internal = true;
55 argidx++;
56 } else {
57 shell_error(sh, "unsupported option %s", argv[argidx]);
58 shell_help(sh);
59 return SHELL_CMD_HELP_PRINTED;
60 }
61 }
62
63 err = dac_channel_setup(dac, &cfg);
64 if (err) {
65 shell_error(sh, "Failed to setup DAC channel (err %d)", err);
66 return err;
67 }
68
69 return 0;
70 }
71
cmd_write_value(const struct shell * sh,size_t argc,char ** argv)72 static int cmd_write_value(const struct shell *sh, size_t argc, char **argv)
73 {
74 const struct device *dac;
75 uint8_t channel;
76 uint32_t value;
77 int err;
78
79 dac = shell_device_get_binding(argv[args_indx.device]);
80 if (!dac) {
81 shell_error(sh, "DAC device not found");
82 return -EINVAL;
83 }
84
85 channel = strtoul(argv[args_indx.channel], NULL, 0);
86 value = strtoul(argv[args_indx.value], NULL, 0);
87
88 err = dac_write_value(dac, channel, value);
89 if (err) {
90 shell_error(sh, "Failed to write DAC value (err %d)", err);
91 return err;
92 }
93
94 return 0;
95 }
96
97 SHELL_STATIC_SUBCMD_SET_CREATE(dac_cmds,
98 SHELL_CMD_ARG(setup, NULL,
99 "Setup DAC channel\n"
100 "Usage: setup <device> <channel> <resolution> [-b] [-i]\n"
101 "-b Enable output buffer\n"
102 "-i Connect internally",
103 cmd_setup, 4, 2),
104 SHELL_CMD_ARG(write_value, NULL,
105 "Write DAC value\n"
106 "Usage: write <device> <channel> <value>",
107 cmd_write_value, 4, 0),
108 SHELL_SUBCMD_SET_END
109 );
110
111 SHELL_CMD_REGISTER(dac, &dac_cmds, "DAC shell commands", NULL);
112
