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#include "esp_netif_ip_addr.h"
#include "esp_wifi_types_generic.h"
#include "freertos/idf_additions.h"
#include "ssd1306.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "portmacro.h"
#include "driver/gpio.h"
#include "hal/gpio_types.h"
#include "esp_wifi.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include <string.h>
#include <stdio.h>
#define TICKS_MS(x) ((x) / portTICK_PERIOD_MS)
#define LOG(...) ESP_LOGI("desk-andon", __VA_ARGS__)
/* The event group allows multiple bits for each event, but we only care about two events:
* - we are connected to the AP with an IP
* - we failed to connect after the maximum amount of retries */
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1
#define WIFI_ATTEMPT_MAX 5
#define WIFI_SSID "andon-net"
#define WIFI_PASS "uzw00ystu1"
enum Lane {
RED,
ORANGE,
GREEN,
BLUE,
WHITE,
SPEAKER,
};
static const uint8_t bitmap_frame[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xc0, 0x00, 0x00, 0x20, 0x00, 0x00, 0x10, 0x00, 0x00, 0x08, 0x00, 0x00, 0x04, 0x00, 0x00, 0x03,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
static const uint8_t bitmap_light1[] = {
0x07, 0x00, 0x0e, 0x0e, 0x00, 0x1c, 0x1c, 0x00, 0x38, 0x38, 0x00, 0x70, 0x70, 0x00, 0xe0, 0xe0,
0x01, 0xc0, 0xc0, 0x03, 0x80, 0x80, 0x07, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x38,
0x00, 0x00, 0x70, 0x00, 0x00, 0xe0, 0x01, 0x01, 0xc0, 0x03, 0x03, 0x80, 0x07, 0x07, 0x00, 0x0e,
0x0e, 0x00, 0x1c, 0x1c, 0x00, 0x38, 0x38, 0x00, 0x70, 0x70, 0x00, 0xe0, 0xe0, 0x01, 0xc0, 0xc0,
0x03, 0x80
};
static const uint8_t bitmap_light2[] = {
0x00, 0x1c, 0x00, 0x00, 0x38, 0x00, 0x00, 0x70, 0x00, 0x00, 0xe0, 0x00, 0x01, 0xc0, 0x00, 0x03,
0x80, 0x00, 0x07, 0x00, 0x01, 0x0e, 0x00, 0x03, 0x1c, 0x00, 0x07, 0x38, 0x00, 0x0e, 0x70, 0x00,
0x1c, 0xe0, 0x00, 0x38, 0xc0, 0x00, 0x70, 0x80, 0x00, 0xe0, 0x00, 0x01, 0xc0, 0x00, 0x03, 0x80,
0x00, 0x07, 0x00, 0x00, 0x0e, 0x00, 0x00, 0x1c, 0x00, 0x00, 0x38, 0x00, 0x00, 0x70, 0x00, 0x00,
0xe0, 0x00
};
const static int ANDON_PINS[SPEAKER+1] = { 10, 6, 3, 5, 7, 4 };
static uint8_t state = 0;
static SSD1306_t display = { 0 };
static bool lcd_init = false;
static char mac_str[16] = { 0 };
static char ip_str[17] = { 0 };
static bool wifi_connected = false;
static int wifi_connect_attempt = 0;
static EventGroupHandle_t wifi_event_group;
static void
lcd_task_main(void *_p)
{
bool frame_state[SPEAKER] = { 0 };
char mac_str_old[16] = { 0 };
char mac_str_new[16] = { 0 };
char ip_str_old[17] = { 0 };
char ip_str_new[17] = { 0 };
TickType_t last = 0;
while (1) {
TickType_t now = xTaskGetTickCount();
if (!last || (now - last) * portTICK_PERIOD_MS >= 500) {
uint8_t current = state;
memcpy(ip_str_new, ip_str, sizeof(ip_str));
memcpy(mac_str_new, mac_str, sizeof(mac_str));
bool connected = wifi_connected;
for (int i = 0; i < SPEAKER; i++) {
if (current & (1 << i)) {
frame_state[i] ^= true;
}
}
last = now;
if (!lcd_init) {
_ssd1306_clear(&display, false);
_ssd1306_bitmaps(&display, 0, 0, bitmap_frame, 128, 28, false);
lcd_init = true;
}
const int xoff = (128 - 24 * 5 - 4) / 2;
for (int i = 0; i < SPEAKER; i++) {
if (current & (1 << i)) {
_ssd1306_bitmaps(&display, xoff + i * 25, 3,
frame_state[i] ? bitmap_light2 : bitmap_light1,
24, 22, false);
} else {
_ssd1306_clear_rect(&display, xoff + i * 25, 3, 24, 22, false);
}
}
if (strcmp(mac_str_old, mac_str_new)) {
_ssd1306_display_text(&display, 4, 40,
mac_str_new, strlen(mac_str_new), false);
strncpy(mac_str_old, mac_str_new, sizeof(mac_str));
}
if (strcmp(ip_str_old, ip_str_new)) {
_ssd1306_display_text(&display, connected ? 4 : 0, 52,
ip_str_new, strlen(ip_str_new), false);
strncpy(ip_str_old, ip_str_new, sizeof(ip_str));
}
ssd1306_next_frame(&display);
}
vTaskDelay(TICKS_MS(50));
}
}
static void
set_output(uint8_t bv)
{
state = bv;
for (int i = 0; i <= SPEAKER; i++) {
gpio_set_level(ANDON_PINS[i], !(state & (1 << i)));
vTaskDelay(10);
}
}
static void
wifi_event_handler(void *arg, esp_event_base_t event_base,
int32_t event_id, void *event_data)
{
if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
snprintf(ip_str, sizeof(ip_str), " connecting.. ");
vTaskDelay(1);
wifi_connected = false;
esp_wifi_connect();
} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
wifi_connected = false;
if (wifi_connect_attempt < WIFI_ATTEMPT_MAX) {
esp_wifi_connect();
wifi_connect_attempt++;
LOG("retry to connect to the AP");
snprintf(ip_str, sizeof(ip_str), " connecting..%c ",
'0' + wifi_connect_attempt);
} else {
snprintf(ip_str, sizeof(ip_str), " no wifi ");
xEventGroupSetBits(wifi_event_group, WIFI_FAIL_BIT);
}
LOG("connect to the AP fail");
} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
LOG("got ip:" IPSTR, IP2STR(&event->ip_info.ip));
snprintf(ip_str, sizeof(ip_str), IPSTR, IP2STR(&event->ip_info.ip));
wifi_connect_attempt = 0;
wifi_connected = true;
xEventGroupSetBits(wifi_event_group, WIFI_CONNECTED_BIT);
}
}
static void
wifi_init(void)
{
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK(ret);
wifi_event_group = xEventGroupCreate();
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
esp_netif_create_default_wifi_sta();
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
uint8_t mac[6] = { 0 };
esp_wifi_get_mac(WIFI_IF_STA, mac);
snprintf(mac_str, sizeof(mac_str), ":%02X:%02X:%02X:%02X:%02X",
mac[1], mac[2], mac[3], mac[4], mac[5]);
esp_event_handler_instance_t instance_any_id;
esp_event_handler_instance_t instance_got_ip;
ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
ESP_EVENT_ANY_ID, &wifi_event_handler, NULL, &instance_any_id));
ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
IP_EVENT_STA_GOT_IP, &wifi_event_handler, NULL, &instance_got_ip));
wifi_config_t wifi_config = {
.sta = {
.ssid = WIFI_SSID,
.password = WIFI_PASS,
.threshold.authmode = WIFI_AUTH_WPA2_PSK,
.sae_pwe_h2e = WPA3_SAE_PWE_BOTH,
.sae_h2e_identifier = "",
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
ESP_ERROR_CHECK(esp_wifi_start() );
LOG("wifi_init_sta finished.");
/* Waiting until either the connection is established (WIFI_CONNECTED_BIT)
* or connection failed for the maximum number of re-tries (WIFI_FAIL_BIT).
* The bits are set by event_handler() (see above) */
EventBits_t bits = xEventGroupWaitBits(wifi_event_group,
WIFI_CONNECTED_BIT | WIFI_FAIL_BIT, pdFALSE, pdFALSE, portMAX_DELAY);
/* xEventGroupWaitBits() returns the bits before the call returned,
* hence we can test which event actually happened. */
if (bits & WIFI_CONNECTED_BIT) {
LOG("connected to ap SSID:%s password:%s", WIFI_SSID, WIFI_PASS);
} else if (bits & WIFI_FAIL_BIT) {
LOG("Failed to connect to SSID:%s, password:%s", WIFI_SSID, WIFI_PASS);
} else {
LOG("UNEXPECTED EVENT");
}
}
void
app_main(void)
{
for (int i = 0; i <= SPEAKER; i++) {
gpio_reset_pin(ANDON_PINS[i]);
gpio_set_direction(ANDON_PINS[i], GPIO_MODE_OUTPUT_OD);
gpio_set_level(ANDON_PINS[i], 1);
}
printf("DESK ANDON\n");
i2c_master_init(&display, 0, 1, -1);
ssd1306_init(&display, 128, 64);
ssd1306_clear_screen(&display, false);
ssd1306_display_text(&display, 3, 24, "DESK ANDON", 10, false);
vTaskDelay(TICKS_MS(500));
TaskHandle_t lcd_task = NULL;
xTaskCreate(lcd_task_main, "lcd", 16 * 1024, NULL, tskIDLE_PRIORITY, &lcd_task);
vTaskDelay(TICKS_MS(500));
wifi_init();
int tick = 0;
uint8_t b = 0;
while (1) {
printf("Tick %i\n", ++tick);
set_output(b);
b = (b + 1) & ((1 << SPEAKER) - 1);
vTaskDelay(TICKS_MS(1000));
}
}
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