init

2026-06-26 00:30:13 +02:00
commit b27cd76ca8
122 changed files with 37290 additions and 0 deletions
@@ -0,0 +1,43 @@
+#include "ack.h"
+#include "lib/cifra/sha2.h"
+#include "lib/config.h"
+#include "meshcore/meshframing.h"
+#include <string.h>
+
+#define TAG "Ack"
+
+void sendDiscreteAck (uint8_t *data, const uint8_t len, uint8_t *senderPubKey) {
+    FrameStruct frame;
+    frame.path.pathLen = 0;
+    memset (&frame, 0, sizeof (frame));
+
+    // 1. Header
+    frame.header =
+        ROUTE_TYPE_FLOOD |  // currently flood
+        PAYLOAD_TYPE_ACK |
+        PAYLOAD_VERSION_0;
+
+    // Buffer for the digest
+    uint8_t hash[CF_SHA256_HASHSZ];
+
+    // Context
+    cf_sha256_context ctx;
+
+    // 1. Initialize
+    cf_sha256_init (&ctx);
+
+    // 2. Feed in your data
+    cf_sha256_update (&ctx, data, len);
+
+    cf_sha256_update (&ctx, senderPubKey, sizeof (persistent.pubkey));
+
+    // 3. Compute digest
+    cf_sha256_digest (&ctx, hash);
+
+    memcpy (frame.payload, hash, 4);
+    // 5. Finalize
+    frame.payloadLen = 4;
+
+
+    LoRaTransmit (&frame);
+}