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authorUros Majstorovic <majstor@majstor.org>2020-08-05 03:39:22 +0200
committerUros Majstorovic <majstor@majstor.org>2020-08-05 03:39:22 +0200
commitcf7c06297d04bade9cd04c056f9ed510e64dd7bd (patch)
treea3b8cc23574b98e10874b51d33c9fe1bfc012663 /fw/esp32/components/eos/wifi.c
parent5cd610a07468137066ea4daa5176c3e7045113b0 (diff)
code -> fw
Diffstat (limited to 'fw/esp32/components/eos/wifi.c')
-rwxr-xr-xfw/esp32/components/eos/wifi.c302
1 files changed, 302 insertions, 0 deletions
diff --git a/fw/esp32/components/eos/wifi.c b/fw/esp32/components/eos/wifi.c
new file mode 100755
index 0000000..3dd90ba
--- /dev/null
+++ b/fw/esp32/components/eos/wifi.c
@@ -0,0 +1,302 @@
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+
+#include <esp_system.h>
+#include <esp_event.h>
+#include <esp_event_loop.h>
+#include <esp_log.h>
+#include <esp_err.h>
+#include <esp_wifi.h>
+
+#include "eos.h"
+#include "net.h"
+#include "wifi.h"
+
+// XXX: WiFi fail due to no DHCP server
+
+#define WIFI_MAX_SCAN_RECORDS 20
+#define WIFI_MAX_CONNECT_ATTEMPTS 3
+
+#define WIFI_STATE_STOPPED 0
+#define WIFI_STATE_SCANNING 1
+#define WIFI_STATE_CONNECTING 2
+#define WIFI_STATE_CONNECTED 3
+#define WIFI_STATE_DISCONNECTING 4
+#define WIFI_STATE_DISCONNECTED 5
+
+#define WIFI_ACTION_NONE 0
+#define WIFI_ACTION_SCAN 1
+#define WIFI_ACTION_CONNECT 2
+#define WIFI_ACTION_DISCONNECT 3
+
+static const char *TAG = "EOS WIFI";
+
+static SemaphoreHandle_t mutex;
+
+static wifi_config_t wifi_sta_config;
+static wifi_scan_config_t wifi_scan_config;
+
+static int wifi_connect_cnt = 0;
+static uint8_t wifi_action;
+static uint8_t wifi_state;
+
+static esp_err_t wifi_event_handler(void *ctx, system_event_t *event) {
+ esp_err_t ret = ESP_OK;
+ char _disconnect;
+ uint8_t _action, _state;
+ unsigned char *rbuf;
+ wifi_ap_record_t scan_r[WIFI_MAX_SCAN_RECORDS];
+ uint16_t scan_n = WIFI_MAX_SCAN_RECORDS;
+
+ switch(event->event_id) {
+ case WIFI_EVENT_SCAN_DONE:
+ memset(scan_r, 0, sizeof(scan_r));
+ esp_wifi_scan_get_ap_records(&scan_n, scan_r);
+
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ _state = wifi_state;
+ if (wifi_state == WIFI_STATE_CONNECTED) wifi_action = WIFI_ACTION_NONE;
+ xSemaphoreGive(mutex);
+
+ if (_state != WIFI_STATE_CONNECTED) ret = esp_wifi_stop();
+ break;
+
+ case WIFI_EVENT_STA_START:
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ _action = wifi_action;
+ xSemaphoreGive(mutex);
+
+ switch (_action) {
+ case WIFI_ACTION_SCAN:
+ ret = esp_wifi_scan_start(&wifi_scan_config, 0);
+ break;
+
+ case WIFI_ACTION_CONNECT:
+ ret = esp_wifi_connect();
+ break;
+
+ default:
+ break;
+ }
+ break;
+
+ case WIFI_EVENT_STA_STOP:
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ wifi_state = WIFI_STATE_STOPPED;
+ wifi_action = WIFI_ACTION_NONE;
+ xSemaphoreGive(mutex);
+ break;
+
+ case WIFI_EVENT_STA_CONNECTED:
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ wifi_state = WIFI_STATE_CONNECTED;
+ wifi_action = WIFI_ACTION_NONE;
+ wifi_connect_cnt = WIFI_MAX_CONNECT_ATTEMPTS;
+ xSemaphoreGive(mutex);
+ break;
+
+ case WIFI_EVENT_STA_DISCONNECTED:
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ if (wifi_connect_cnt) wifi_connect_cnt--;
+ _action = wifi_action;
+ _disconnect = (wifi_connect_cnt == 0);
+ if (_disconnect) wifi_state = WIFI_STATE_DISCONNECTED;
+ xSemaphoreGive(mutex);
+
+ if (_disconnect) {
+ rbuf = eos_net_alloc();
+ if (_action == WIFI_ACTION_CONNECT) {
+ rbuf[0] = EOS_WIFI_MTYPE_CONNECT;
+ rbuf[1] = EOS_ERR;
+ eos_net_send(EOS_NET_MTYPE_WIFI, rbuf, 2, 0);
+ } else {
+ rbuf[0] = EOS_WIFI_MTYPE_DISCONNECT;
+ eos_net_send(EOS_NET_MTYPE_WIFI, rbuf, 1, 0);
+ }
+ if (!_action) ret = esp_wifi_stop();
+ } else {
+ ret = esp_wifi_connect();
+ }
+ break;
+
+ case IP_EVENT_STA_GOT_IP:
+ ESP_LOGD(TAG, "IP address: " IPSTR, IP2STR(&event->event_info.got_ip.ip_info.ip));
+ if (event->event_info.got_ip.ip_changed) {
+ // send wifi reconnect
+ } else {
+ rbuf = eos_net_alloc();
+ rbuf[0] = EOS_WIFI_MTYPE_CONNECT;
+ rbuf[1] = EOS_OK;
+ eos_net_send(EOS_NET_MTYPE_WIFI, rbuf, 2, 0);
+ }
+ break;
+
+ default: // Ignore the other event types
+ break;
+ }
+ if (ret != ESP_OK) ESP_LOGD(TAG, "ESP WIFI ERR: %d", ret);
+
+ return ESP_OK;
+}
+
+static void wifi_handler(unsigned char _mtype, unsigned char *buffer, uint16_t size) {
+ int rv = EOS_OK;
+ uint8_t mtype = buffer[0];
+ char *ssid, *pass;
+
+ switch (mtype) {
+ case EOS_WIFI_MTYPE_SCAN:
+ rv = eos_wifi_scan();
+ break;
+
+ case EOS_WIFI_MTYPE_CONNECT:
+ ssid = (char *)buffer+1;
+ pass = ssid+strlen(ssid)+1;
+ rv = eos_wifi_set_auth(ssid, pass);
+ if (!rv) rv = eos_wifi_connect();
+ break;
+
+ case EOS_WIFI_MTYPE_DISCONNECT:
+ rv = eos_wifi_disconnect();
+ break;
+ }
+ if (rv) ESP_LOGD(TAG, "WIFI HANDLER ERR: %d", rv);
+}
+
+void eos_wifi_init(void) {
+ esp_err_t ret;
+ wifi_init_config_t wifi_config = WIFI_INIT_CONFIG_DEFAULT();
+
+ memset(&wifi_sta_config, 0, sizeof(wifi_sta_config));
+
+ ret = esp_event_loop_init(wifi_event_handler, NULL);
+ assert(ret == ESP_OK);
+
+ ret = esp_wifi_init(&wifi_config);
+ assert(ret == ESP_OK);
+
+ ret = esp_wifi_set_storage(WIFI_STORAGE_RAM);
+ assert(ret == ESP_OK);
+
+ ret = esp_wifi_set_mode(WIFI_MODE_STA);
+ assert(ret == ESP_OK);
+
+ ret = esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_sta_config);
+ assert(ret == ESP_OK);
+
+ ret = esp_wifi_stop();
+ assert(ret == ESP_OK);
+
+ mutex = xSemaphoreCreateBinary();
+ xSemaphoreGive(mutex);
+
+ eos_net_set_handler(EOS_NET_MTYPE_WIFI, wifi_handler);
+ ESP_LOGI(TAG, "INIT");
+}
+
+int eos_wifi_scan(void) {
+ int rv = EOS_OK;
+ esp_err_t ret = ESP_OK;
+ uint8_t _wifi_state = 0;
+
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ if (!wifi_action) {
+ _wifi_state = wifi_state;
+
+ wifi_action = WIFI_ACTION_SCAN;
+ if (wifi_state == WIFI_STATE_STOPPED) wifi_state = WIFI_STATE_SCANNING;
+
+ memset(&wifi_scan_config, 0, sizeof(wifi_scan_config));
+ } else {
+ rv = EOS_ERR_BUSY;
+ }
+ xSemaphoreGive(mutex);
+
+ if (rv) return rv;
+
+ if (_wifi_state == WIFI_STATE_STOPPED) {
+ ret = esp_wifi_start();
+ } else {
+ ret = esp_wifi_scan_start(&wifi_scan_config, 0);
+ }
+ if (ret != ESP_OK) rv = EOS_ERR;
+
+ return rv;
+}
+
+int eos_wifi_set_auth(char *ssid, char *pass) {
+ int rv = EOS_OK;
+
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ if (!wifi_action) {
+ if (ssid) strncpy((char *)wifi_sta_config.sta.ssid, ssid, sizeof(wifi_sta_config.sta.ssid) - 1);
+ if (pass) strncpy((char *)wifi_sta_config.sta.password, pass, sizeof(wifi_sta_config.sta.password) - 1);
+ } else {
+ rv = EOS_ERR_BUSY;
+
+ }
+ xSemaphoreGive(mutex);
+
+ return rv;
+}
+
+int eos_wifi_connect(void) {
+ int rv = EOS_OK;
+ esp_err_t ret = ESP_OK;
+ uint8_t _wifi_state = 0;
+
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ if (!wifi_action) {
+ _wifi_state = wifi_state;
+
+ wifi_action = WIFI_ACTION_CONNECT;
+ wifi_state = WIFI_STATE_CONNECTING;
+ wifi_connect_cnt = WIFI_MAX_CONNECT_ATTEMPTS;
+ } else {
+ rv = EOS_ERR_BUSY;
+ }
+ xSemaphoreGive(mutex);
+
+ if (rv) return rv;
+
+ esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_sta_config);
+
+ if (_wifi_state == WIFI_STATE_STOPPED) {
+ ret = esp_wifi_start();
+ } else {
+ ret = esp_wifi_connect();
+ }
+ if (ret != ESP_OK) rv = EOS_ERR;
+
+ return rv;
+}
+
+int eos_wifi_disconnect(void) {
+ int rv = EOS_OK;
+ esp_err_t ret = ESP_OK;
+
+ xSemaphoreTake(mutex, portMAX_DELAY);
+ if (!wifi_action) {
+ wifi_action = WIFI_ACTION_DISCONNECT;
+ wifi_state = WIFI_STATE_DISCONNECTING;
+ wifi_connect_cnt = 0;
+
+ memset(wifi_sta_config.sta.ssid, 0, sizeof(wifi_sta_config.sta.ssid));
+ memset(wifi_sta_config.sta.password, 0, sizeof(wifi_sta_config.sta.password));
+ } else {
+ rv = EOS_ERR_BUSY;
+ }
+ xSemaphoreGive(mutex);
+
+ if (rv) return rv;
+
+ ret = esp_wifi_stop();
+ if (ret != ESP_OK) rv = EOS_ERR;
+
+ return rv;
+}
+