From 7dc363628a906f77adf894127a5e273e96673573 Mon Sep 17 00:00:00 2001
From: "Deomid \"rojer\" Ryabkov" <rojer@rojer.me>
Date: Sat, 6 Aug 2022 21:32:28 +0100
Subject: [PATCH] ESP32C3 support

https://github.com/cesanta/mongoose-os/issues/564
---
 mos.yml | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/mos.yml b/mos.yml
index 3bf1235..b1a8e3b 100644
--- a/mos.yml
+++ b/mos.yml
@@ -8,7 +8,7 @@ build_vars:
   MGOS_LWIP_ENABLE_IPV4_NAT: 0
 
 conds:
-  # For esp32, SDK provides LwIP and this is basically an no-op library.
+  # For esp32xx, SDK provides LwIP and this is basically an no-op library.
   - when: mos.platform == "esp32"
     apply:
       sources:
@@ -38,6 +38,35 @@ conds:
               IP_NAPT_MAX: 64
               IP_PORTMAP_MAX: 8
 
+  - when: mos.platform == "esp32c3"
+    apply:
+      sources:
+        - src
+      includes:
+        - include
+      build_vars:
+        CONFIG_MBEDTLS_CMAC_C: y
+        CONFIG_MBEDTLS_DES_C: n
+        CONFIG_MBEDTLS_NIST_KW_C: y
+        CONFIG_MBEDTLS_RC4_DISABLED: y
+        ESP_IDF_SDKCONFIG_OPTS: >
+          ${build_vars.ESP_IDF_SDKCONFIG_OPTS}
+          CONFIG_LWIP_DHCP_DISABLE_VENDOR_CLASS_ID=n
+          CONFIG_LWIP_DHCP_GET_NTP_SRV=y
+          CONFIG_LWIP_TCP_MSL=5000
+      conds:
+        - when: build_vars.MGOS_LWIP_ENABLE_IPV4_NAT == "1"
+          apply:
+            build_vars:
+              ESP_IDF_SDKCONFIG_OPTS: >
+                ${build_vars.ESP_IDF_SDKCONFIG_OPTS}
+                CONFIG_LWIP_L2_TO_L3_COPY=y
+                CONFIG_LWIP_IP_FORWARD=y
+                CONFIG_LWIP_IPV4_NAPT=y
+            cdefs:
+              IP_NAPT_MAX: 64
+              IP_PORTMAP_MAX: 8
+
   - when: mos.platform == "esp8266"
     apply:
       conds: