1 /*
2 * Copyright (c) 2020 Siddharth Chandrasekaran <siddharth@embedjournal.com>
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <zephyr/kernel.h>
8 #include <zephyr/device.h>
9 #include <zephyr/drivers/gpio.h>
10 #include <zephyr/mgmt/osdp.h>
11
12 /* The devicetree node identifier for the "led0" alias. */
13 #define LED0_NODE DT_ALIAS(led0)
14
15 #if !DT_NODE_HAS_STATUS_OKAY(LED0_NODE)
16 #error "BOARD does not define a debug LED"
17 #endif
18
19 static const struct gpio_dt_spec led0 = GPIO_DT_SPEC_GET_OR(LED0_NODE, gpios, {0});
20
21 #define SLEEP_TIME_MS (20)
22 #define CNT_PER_SEC (1000 / SLEEP_TIME_MS)
23 #define COMMAND_WAIT_TIME_SEC (10)
24 #define COMMAND_WAIT_COUNT (COMMAND_WAIT_TIME_SEC * CNT_PER_SEC)
25
26 enum osdp_pd_e {
27 OSDP_PD_0,
28 OSDP_PD_SENTINEL,
29 };
30
key_press_callback(int pd,uint8_t * data,int len)31 int key_press_callback(int pd, uint8_t *data, int len)
32 {
33 printk("CP PD[%d] key press - data: 0x%02x\n", pd, data[0]);
34 return 0;
35 }
36
card_read_callback(int pd,int format,uint8_t * data,int len)37 int card_read_callback(int pd, int format, uint8_t *data, int len)
38 {
39 int i;
40
41 printk("CP PD[%d] card read - fmt: %d len: %d card_data: [ ",
42 pd, format, len);
43
44 for (i = 0; i < len; i++) {
45 printk("0x%02x ", data[i]);
46 }
47
48 printk("]\n");
49 return 0;
50 }
51
event_handler(void * unused,int pd,struct osdp_event * e)52 int event_handler(void *unused, int pd, struct osdp_event *e)
53 {
54 switch (e->type) {
55 case OSDP_EVENT_CARDREAD:
56 card_read_callback(pd, e->cardread.format,
57 e->cardread.data, e->cardread.length);
58 break;
59 case OSDP_EVENT_KEYPRESS:
60 key_press_callback(pd, e->keypress.data, e->keypress.length);
61 break;
62 default:
63 break;
64 }
65 return 0;
66 }
67
main(void)68 int main(void)
69 {
70 int ret, led_state;
71 uint32_t cnt = 0;
72 struct osdp_cmd pulse_output = {
73 .id = OSDP_CMD_OUTPUT,
74 .output.output_no = 0, /* First output */
75 .output.control_code = 5, /* Temporarily turn on output */
76 .output.timer_count = 10, /* Timer: 10 * 100ms = 1 second */
77 };
78
79 if (!gpio_is_ready_dt(&led0)) {
80 printk("Failed to get LED GPIO port %s\n", led0.port->name);
81 return 0;
82 }
83
84 ret = gpio_pin_configure_dt(&led0, GPIO_OUTPUT_ACTIVE);
85 if (ret < 0) {
86 printk("Failed to configure gpio pin\n");
87 return 0;
88 }
89
90 osdp_cp_set_event_callback(event_handler, NULL);
91
92 led_state = 0;
93 while (1) {
94 if ((cnt & 0x7f) == 0x7f) {
95 /* show a sign of life */
96 led_state = !led_state;
97 }
98 if ((cnt % COMMAND_WAIT_COUNT) == 0) {
99 osdp_cp_send_command(OSDP_PD_0, &pulse_output);
100 }
101 gpio_pin_set(led0.port, led0.pin, led_state);
102 k_msleep(SLEEP_TIME_MS);
103 cnt++;
104 }
105 return 0;
106 }
107
