feat(wifi): wifi support regdomain for both 2.4G and 5G

Author: QingzhaoYin

components/esp_wifi/CMakeLists.txt

@@ -40,6 +40,9 @@ if(CONFIG_ESP_WIFI_ENABLED OR CONFIG_ESP_HOST_WIFI_ENABLED)
         "src/wifi_default_ap.c"
         "${idf_target}/esp_adapter.c")
 
+
+    list(APPEND srcs "regulatory/esp_wifi_regulatory.c")
+
     if(CONFIG_ESP_NETIF_USES_TCPIP_WITH_BSD_API AND CONFIG_LWIP_IPV4)
         list(APPEND srcs
             "src/smartconfig_ack.c")

components/esp_wifi/include/esp_wifi_types_generic.h

@@ -1446,6 +1446,35 @@ typedef struct {
     bool dcm;                                /**< Using dcm rate to send frame */
 } wifi_tx_rate_config_t;
 
+#define WIFI_MAX_SUPPORT_COUNTRY_NUM 175 /**< max number of supported countries */
+#ifdef CONFIG_SOC_WIFI_SUPPORT_5G
+#define WIFI_MAX_REGULATORY_RULE_NUM  7 /**< max number of regulatory rules */
+#else
+#define WIFI_MAX_REGULATORY_RULE_NUM  2 /**< max number of regulatory rules */
+#endif
+
+/** Argument structure for regulatory rule */
+typedef struct {
+    uint8_t start_channel;      /**< start channel of regulatory rule */
+    uint8_t end_channel;        /**< end channel of regulatory rule */
+    uint16_t max_bandwidth : 3; /**< max bandwidth(MHz) of regulatory rule, 1:20M, 2:40M, 3:80M, 4:160M */
+    uint16_t max_eirp : 6;      /**< indicates the maximum Equivalent Isotropically Radiated Power (EIRP), typically measured in dBm */
+    uint16_t is_dfs : 1;        /**< flag to identify dfs channel */
+    uint16_t reserved : 6;      /**< reserved */
+} wifi_reg_rule_t;
+
+/** Argument structure for regdomain */
+typedef struct {
+    uint8_t n_reg_rules;                                     /**< number of regulatory rules */
+    wifi_reg_rule_t reg_rules[WIFI_MAX_REGULATORY_RULE_NUM]; /**< array of regulatory rules*/
+} wifi_regulatory_t;
+
+/** Argument structure for regdomain */
+typedef struct {
+    char cn[2];              /**< country code string */
+    uint8_t regulatory_type; /**< regulatory type of country */
+} wifi_regdomain_t;
+
 #ifdef __cplusplus
 }
 #endif

components/esp_wifi/lib

@@ -0,0 +1,12 @@
+# REGULATORY
+
+## Introduction
+`esp_wifi_regulatory.txt` and `esp_wifi_regulatory.c` defines wireless communication regulations for different countries and regions to ensure that the device operates in compliance with local regulations.
+
+`esp_wifi_regulatory.c` is generated from `esp_wifi_regulatory.txt` by using the `reg2fw.py` script.
+
+The num of all suppported countries in `esp_wifi_regulatory.txt` is `WIFI_MAX_SUPPORT_COUNTRY_NUM` that is defined in `esp_wifi_types_generic.h`
+
+- Generate `esp_wifi_regulatory.c`
+  - `cd ~/esp-idf/components/esp_wifi/regulatory`
+  - `python reg2fw.py`