Expose OpenThread CoAP implementation

openthread-sys/Cargo.toml

@@ -19,6 +19,8 @@ force-generate-bindings = []
 # If this feature is not enabled, the build will assume and use the "official" RiscV GCC toolchain:
 # https://github.com/riscv-collab/riscv-gnu-toolchain
 force-esp-riscv-toolchain = []
+# Enable coap in the openthread cmake build and expose coap functionality to rust
+coap = []
 
 [build-dependencies]
 anyhow = "1"

openthread-sys/gen/builder.rs

@@ -178,6 +178,12 @@ impl OpenThreadBuilder {
             .cflag("-DOPENTHREAD_CONFIG_NUM_MESSAGE_BUFFERS=128")
             .cxxflag("-DOPENTHREAD_CONFIG_NUM_MESSAGE_BUFFERS=128");
 
+        if std::env::var("CARGO_FEATURE_COAP").is_ok() {
+            config
+                .define("OT_COAP", "ON")
+                .define("OT_COAP_OBSERVE", "ON");
+        }
+
         config
             .define("OT_THREAD_VERSION", "1.1")
             .define("OT_LOG_LEVEL", "NOTE")

openthread-sys/gen/include/include.h

@@ -4,6 +4,7 @@
 #include "openthread/tasklet.h"
 #include "openthread/nat64.h"
 #include "openthread/netdata.h"
+#include "openthread/coap.h"
 
 #include "openthread/platform/alarm-milli.h"
 #include "openthread/platform/radio.h"
@@ -17,4 +18,12 @@
 
 #ifndef OPENTHREAD_CONFIG_SRP_CLIENT_AUTO_START_API_ENABLE
 #define OPENTHREAD_CONFIG_SRP_CLIENT_AUTO_START_API_ENABLE 1
+#endif
+
+#ifndef OPENTHREAD_CONFIG_COAP_API_ENABLE
+#define OPENTHREAD_CONFIG_COAP_API_ENABLE 1
+#endif
+
+#ifndef OPENTHREAD_CONFIG_COAP_OBSERVE_API_ENABLE
+#define OPENTHREAD_CONFIG_COAP_OBSERVE_API_ENABLE 1
 #endif

openthread/Cargo.toml

@@ -19,6 +19,7 @@ default = []
 edge-nal = ["udp", "dep:edge-nal"]
 udp = []
 srp = ["udp"]
+coap = []
 defmt = ["dep:defmt", "heapless/defmt-03", "embassy-time/defmt"]
 force-generate-bindings = ["openthread-sys/force-generate-bindings"]
 force-esp-riscv-toolchain = ["openthread-sys/force-esp-riscv-toolchain"]