espradio: implement support for wifi/BLE on the ESP32-C3

This is a work in progress. It does not yet work.

espradio/blobs/headers/esp_interface.h

@@ -0,0 +1,30 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+
+#ifndef __ESP_INTERFACE_H__
+#define __ESP_INTERFACE_H__
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    ESP_IF_WIFI_STA = 0,     /**< Station interface */
+    ESP_IF_WIFI_AP,          /**< Soft-AP interface */
+    ESP_IF_WIFI_NAN,         /**< NAN interface */
+    ESP_IF_ETH,              /**< Ethernet interface */
+    ESP_IF_MAX
+} esp_interface_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* __ESP_INTERFACE_TYPES_H__ */