diff --git a/main/main.c b/main/main.c new file mode 100644 --- /dev/null +++ b/main/main.c @@ -0,0 +1,255 @@ +// +// Protofusion ESP32S3 Template +// + +#include +#include "esp_log.h" +#include "freertos/FreeRTOS.h" +#include "freertos/task.h" +#include "freertos/event_groups.h" +#include "esp_system.h" +#include "esp_wifi.h" +#include "esp_event.h" +#include "esp_log.h" +#include "nvs_flash.h" + +#include "lwip/err.h" +#include "lwip/sys.h" +#include "tinyusb.h" +#include "tusb_cdc_acm.h" +#include "sdkconfig.h" + + + +// ------------------------ Wifi ------------------------------------------------ + +// Set via menuconfig -- do not set in source code +#define EXAMPLE_ESP_WIFI_SSID CONFIG_ESP_WIFI_SSID +#define EXAMPLE_ESP_WIFI_PASS CONFIG_ESP_WIFI_PASSWORD +#define EXAMPLE_ESP_MAXIMUM_RETRY CONFIG_ESP_MAXIMUM_RETRY + + +#if CONFIG_ESP_WPA3_SAE_PWE_HUNT_AND_PECK +#define ESP_WIFI_SAE_MODE WPA3_SAE_PWE_HUNT_AND_PECK +#define EXAMPLE_H2E_IDENTIFIER "" +#elif CONFIG_ESP_WPA3_SAE_PWE_HASH_TO_ELEMENT +#define ESP_WIFI_SAE_MODE WPA3_SAE_PWE_HASH_TO_ELEMENT +#define EXAMPLE_H2E_IDENTIFIER CONFIG_ESP_WIFI_PW_ID +#elif CONFIG_ESP_WPA3_SAE_PWE_BOTH +#define ESP_WIFI_SAE_MODE WPA3_SAE_PWE_BOTH +#define EXAMPLE_H2E_IDENTIFIER CONFIG_ESP_WIFI_PW_ID +#endif +#if CONFIG_ESP_WIFI_AUTH_OPEN +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_OPEN +#elif CONFIG_ESP_WIFI_AUTH_WEP +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WEP +#elif CONFIG_ESP_WIFI_AUTH_WPA_PSK +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_PSK +#elif CONFIG_ESP_WIFI_AUTH_WPA2_PSK +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_PSK +#elif CONFIG_ESP_WIFI_AUTH_WPA_WPA2_PSK +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA_WPA2_PSK +#elif CONFIG_ESP_WIFI_AUTH_WPA3_PSK +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA3_PSK +#elif CONFIG_ESP_WIFI_AUTH_WPA2_WPA3_PSK +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WPA2_WPA3_PSK +#elif CONFIG_ESP_WIFI_AUTH_WAPI_PSK +#define ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD WIFI_AUTH_WAPI_PSK +#endif + + +/* FreeRTOS event group to signal when we are connected*/ +static EventGroupHandle_t s_wifi_event_group; + + +/* 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 + +static const char *TAG = "wifi station"; +static int s_retry_num = 0; + + + +static void 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) { + esp_wifi_connect(); + } else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) { + if (s_retry_num < EXAMPLE_ESP_MAXIMUM_RETRY) { + esp_wifi_connect(); + s_retry_num++; + ESP_LOGI(TAG, "retry to connect to the AP"); + } else { + xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT); + } + ESP_LOGI(TAG,"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; + ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip)); + s_retry_num = 0; + xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT); + } +} + +void wifi_init_sta(void) +{ + s_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)); + + 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, + &event_handler, + NULL, + &instance_any_id)); + ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT, + IP_EVENT_STA_GOT_IP, + &event_handler, + NULL, + &instance_got_ip)); + + wifi_config_t wifi_config = { + .sta = { + .ssid = EXAMPLE_ESP_WIFI_SSID, + .password = EXAMPLE_ESP_WIFI_PASS, + /* Authmode threshold resets to WPA2 as default if password matches WPA2 standards (pasword len => 8). + * If you want to connect the device to deprecated WEP/WPA networks, Please set the threshold value + * to WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK and set the password with length and format matching to + * WIFI_AUTH_WEP/WIFI_AUTH_WPA_PSK standards. + */ + .threshold.authmode = ESP_WIFI_SCAN_AUTH_MODE_THRESHOLD, + .sae_pwe_h2e = ESP_WIFI_SAE_MODE, + .sae_h2e_identifier = EXAMPLE_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() ); + + ESP_LOGI(TAG, "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(s_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) { + ESP_LOGI(TAG, "connected to ap SSID:%s password:%s", + EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS); + } else if (bits & WIFI_FAIL_BIT) { + ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s", + EXAMPLE_ESP_WIFI_SSID, EXAMPLE_ESP_WIFI_PASS); + } else { + ESP_LOGE(TAG, "UNEXPECTED EVENT"); + } +} + + + + + +// ------------------------ USB CDC ---------------------------------------- +static uint8_t buf[CONFIG_TINYUSB_CDC_RX_BUFSIZE + 1]; + +void tinyusb_cdc_rx_callback(int itf, cdcacm_event_t *event) +{ + /* initialization */ + size_t rx_size = 0; + + /* read */ + esp_err_t ret = tinyusb_cdcacm_read(itf, buf, CONFIG_TINYUSB_CDC_RX_BUFSIZE, &rx_size); + if (ret == ESP_OK) { + ESP_LOGI(TAG, "Data from channel %d:", itf); + ESP_LOG_BUFFER_HEXDUMP(TAG, buf, rx_size, ESP_LOG_INFO); + } else { + ESP_LOGE(TAG, "Read error"); + } + + /* write back */ + tinyusb_cdcacm_write_queue(itf, buf, rx_size); + tinyusb_cdcacm_write_flush(itf, 0); +} + +void tinyusb_cdc_line_state_changed_callback(int itf, cdcacm_event_t *event) +{ + int dtr = event->line_state_changed_data.dtr; + int rts = event->line_state_changed_data.rts; + ESP_LOGI(TAG, "Line state changed on channel %d: DTR:%d, RTS:%d", itf, dtr, rts); +} + + + +// ------------------------- Application -------------------------- + + +void app_main(void) +{ + ESP_LOGI(TAG, "USB initialization"); + const tinyusb_config_t tusb_cfg = { + .device_descriptor = NULL, + .string_descriptor = NULL, + .external_phy = false, + .configuration_descriptor = NULL, + }; + + ESP_ERROR_CHECK(tinyusb_driver_install(&tusb_cfg)); + + tinyusb_config_cdcacm_t acm_cfg = { + .usb_dev = TINYUSB_USBDEV_0, + .cdc_port = TINYUSB_CDC_ACM_0, + .rx_unread_buf_sz = 64, + .callback_rx = &tinyusb_cdc_rx_callback, // the first way to register a callback + .callback_rx_wanted_char = NULL, + .callback_line_state_changed = NULL, + .callback_line_coding_changed = NULL + }; + + ESP_ERROR_CHECK(tusb_cdc_acm_init(&acm_cfg)); + /* the second way to register a callback */ + ESP_ERROR_CHECK(tinyusb_cdcacm_register_callback( + TINYUSB_CDC_ACM_0, + CDC_EVENT_LINE_STATE_CHANGED, + &tinyusb_cdc_line_state_changed_callback)); + +#if (CONFIG_TINYUSB_CDC_COUNT > 1) + acm_cfg.cdc_port = TINYUSB_CDC_ACM_1; + ESP_ERROR_CHECK(tusb_cdc_acm_init(&acm_cfg)); + ESP_ERROR_CHECK(tinyusb_cdcacm_register_callback( + TINYUSB_CDC_ACM_1, + CDC_EVENT_LINE_STATE_CHANGED, + &tinyusb_cdc_line_state_changed_callback)); +#endif + + ESP_LOGI(TAG, "USB initialization DONE"); + + + //Initialize NVS + 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); + + ESP_LOGI(TAG, "ESP_WIFI_MODE_STA"); + wifi_init_sta(); + + +}