diff --git a/components/flatbuffers/TopologyBuilder.cpp b/components/flatbuffers/TopologyBuilder.cpp
index d87daba..8ea5319 100644
--- a/components/flatbuffers/TopologyBuilder.cpp
+++ b/components/flatbuffers/TopologyBuilder.cpp
@@ -1,23 +1,48 @@
 #include "TopologyBuilder.h"
 #ifdef TOPOLOGYBUILDER
 namespace Flatbuffers{
-    SerializedMessage TopologyBuilder::build_topology(const std::vector<flatbuffers::Offset<Topology::NeighbourBlob>>& topology){
+    SerializedMessage TopologyBuilder::build_topology(const std::unordered_map<uint16_t, std::vector<Topology::ChannelBoardConn>>& topology_map) {
         builder_.Clear();
-        
-        auto neighbours_vec = builder_.CreateVector(topology);
-        auto topology_offset = Topology::CreateTopologyInfo(builder_, static_cast<uint16_t>(topology.size()), neighbours_vec);
+
+        std::vector<flatbuffers::Offset<Topology::NeighbourBlob>> neighbours;
+        neighbours.reserve(topology_map.size());
+
+        for (const auto& [board_id, connections] : topology_map) {
+            auto conn_vec = builder_.CreateVectorOfStructs(connections);
+            auto blob = Topology::CreateNeighbourBlob(
+                builder_,
+                board_id,
+                static_cast<uint8_t>(connections.size()),
+                conn_vec
+            );
+
+            neighbours.push_back(blob);
+        }
+
+        auto neighbours_vec = builder_.CreateVector(neighbours);
+        auto topology_offset = Topology::CreateTopologyInfo(
+            builder_,
+            static_cast<uint16_t>(neighbours.size()),
+            neighbours_vec
+        );
 
         builder_.Finish(topology_offset);
 
-        return {
-            builder_.GetBufferPointer(),
-            builder_.GetSize()
-        };
+        return { builder_.GetBufferPointer(), builder_.GetSize() };
     }
 
-    flatbuffers::Offset<Topology::NeighbourBlob> TopologyBuilder::build_neighbour_info(uint16_t board_id, const std::vector<Topology::ChannelBoardConn>& connections){
-        auto conn = builder_.CreateVectorOfStructs(connections);
-        return Topology::CreateNeighbourBlob(builder_, board_id, static_cast<uint8_t>(connections.size()), conn);
+    flatbuffers::Offset<Topology::NeighbourBlob> TopologyBuilder::build_neighbour_info(
+        uint16_t board_id,
+        const std::vector<Topology::ChannelBoardConn>& connections
+    ) {
+        auto conn_vec = builder_.CreateVectorOfStructs(connections);
+
+        return Topology::CreateNeighbourBlob(
+            builder_,
+            board_id,
+            static_cast<uint8_t>(connections.size()),
+            conn_vec
+        );
     }
 
     Topology::ChannelBoardConn TopologyBuilder::build_connections(uint8_t channel, uint16_t board_id){
diff --git a/components/flatbuffers/include/TopologyBuilder.h b/components/flatbuffers/include/TopologyBuilder.h
index 14c98e6..f996818 100644
--- a/components/flatbuffers/include/TopologyBuilder.h
+++ b/components/flatbuffers/include/TopologyBuilder.h
@@ -14,11 +14,11 @@ namespace Flatbuffers {
     public:
         TopologyBuilder() : builder_(RIP_MAX_ROUTES*(sizeof(Topology::NeighbourBlob) + sizeof(Topology::ChannelBoardConn)*MAX_CHANNELS)) {}
 
-        SerializedMessage build_topology(const std::vector<flatbuffers::Offset<Topology::NeighbourBlob>>& topology);
-        flatbuffers::Offset<Topology::NeighbourBlob> build_neighbour_info(uint16_t board_id, const std::vector<Topology::ChannelBoardConn>& connections);
+        SerializedMessage build_topology(const std::unordered_map<uint16_t, std::vector<Topology::ChannelBoardConn>>& topology_map);
         Topology::ChannelBoardConn build_connections(uint8_t channel, uint16_t board_id);
-
+        
     private:
+        flatbuffers::Offset<Topology::NeighbourBlob> build_neighbour_info(uint16_t board_id, const std::vector<Topology::ChannelBoardConn>& connections);
         flatbuffers::FlatBufferBuilder builder_;
     };
 }
diff --git a/components/movements/TopologyManager.cpp b/components/movements/TopologyManager.cpp
index 7199263..3031258 100644
--- a/components/movements/TopologyManager.cpp
+++ b/components/movements/TopologyManager.cpp
@@ -204,18 +204,90 @@ esp_err_t TopologyManager::get_curr_topology(std::unordered_map<uint16_t, std::v
     return ESP_OK;
 }
 
-// esp_err_t TopologyManager::write_nvs_topology(){
-//     if (!ready){
-//         return ESP_ERR_INVALID_STATE;
-//     }
-//     return ESP_OK;
-// }
+esp_err_t TopologyManager::write_nvs_topology(){
+    if (!ready){
+        return ESP_ERR_INVALID_STATE;
+    }
 
-// esp_err_t TopologyManager::get_nvs_topology(struct Topology& topology){
-//     if (!ready){
-//         return ESP_ERR_INVALID_STATE;
-//     }
-//     return ESP_OK;
-// }
+    Flatbuffers::SerializedMessage m = builder.build_topology(topology);
+
+    ESP_LOGI(TOPOLOGY_DEBUG_TAG, "Saving topology blob...");
+
+    esp_err_t res = nvs_set_u32(handle, MOVEMENTS_NVS_TOPOLOGY_DATA_SIZE_KEY, static_cast<uint32_t>(m.size));
+
+    res = nvs_commit(handle);
+    if (res != ESP_OK) {
+        ESP_LOGE(TOPOLOGY_DEBUG_TAG, "Failed to commit data size");
+        return res;
+    }
+
+    res = nvs_set_blob(handle, MOVEMENTS_NVS_TOPOLOGY_KEY, m.data, m.size);
+
+    if (res != ESP_OK){
+        ESP_LOGE(TOPOLOGY_DEBUG_TAG, "Failed to write to nvs");
+        return res;
+    }
+
+    res = nvs_commit(handle);
+    if (res != ESP_OK) {
+        ESP_LOGE(TOPOLOGY_DEBUG_TAG, "Failed to commit topology");
+        return res;
+    }
+
+    return ESP_OK;
+}
+
+esp_err_t TopologyManager::get_nvs_topology(std::unordered_map<uint16_t, std::vector<std::pair<uint8_t, uint16_t>>>& topology){
+    if (!ready) {
+        return ESP_ERR_INVALID_STATE;
+    }
+
+    size_t size = 0;
+    esp_err_t res = nvs_get_u32(handle,MOVEMENTS_NVS_TOPOLOGY_DATA_SIZE_KEY, reinterpret_cast<uint32_t*>(&size));
+
+    if (res != ESP_OK) {
+        ESP_LOGE(TOPOLOGY_DEBUG_TAG, "Failed to read data size");
+        return res;
+    }
+
+    std::vector<uint8_t> buffer(size);
+
+    res = nvs_get_blob(handle, MOVEMENTS_NVS_TOPOLOGY_KEY, buffer.data(), &size);
+
+    if (res != ESP_OK) {
+        ESP_LOGE(TOPOLOGY_DEBUG_TAG, "Failed to read blob");
+        return res;
+    }
+
+    // Verify the FlatBuffer
+    flatbuffers::Verifier verifier(buffer.data(), buffer.size());
+    if (!Topology::VerifyTopologyInfoBuffer(verifier)) {
+        ESP_LOGE(TOPOLOGY_DEBUG_TAG, "FlatBuffer verification failed");
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    // Parse root
+    const Topology::TopologyInfo* topo = Topology::GetTopologyInfo(buffer.data());
+
+    topology.clear();
+
+    // Replace neighbours() with your actual accessor name
+    auto neighbours = topo->boards();
+
+    for (const auto* nb : *neighbours) {
+        uint16_t board_id = nb->curr_board_id();
+
+        std::vector<std::pair<uint8_t, uint16_t>> connections;
+        connections.reserve(nb->neighbour_connections()->size());
+
+        for (const auto* conn : *nb->neighbour_connections()) {
+            connections.emplace_back(conn->channel(), conn->board_id());
+        }
+
+        topology.emplace(board_id, std::move(connections));
+    }
+
+    return ESP_OK;
+}
 
 #endif //MOVEMENTS
\ No newline at end of file
diff --git a/components/movements/include/MovementManager.h b/components/movements/include/MovementManager.h
index f7ed809..dbc071c 100644
--- a/components/movements/include/MovementManager.h
+++ b/components/movements/include/MovementManager.h
@@ -6,6 +6,7 @@
 #define MOVEMENTS_NVS_NAMESPACE "movements"
 #define MOVEMENTS_NVS_KEY "key"
 #define MOVEMENTS_NVS_TOPOLOGY_KEY "topology"
+#define MOVEMENTS_NVS_TOPOLOGY_DATA_SIZE_KEY "data_size"
 #define MOVEMENTS_DEBUG_TAG "movements"
 
 class MovementManager {
diff --git a/components/movements/include/TopologyManager.h b/components/movements/include/TopologyManager.h
index a87c1bb..94ebf6d 100644
--- a/components/movements/include/TopologyManager.h
+++ b/components/movements/include/TopologyManager.h
@@ -5,9 +5,9 @@
 #include <unordered_map>
 #include <unordered_set>
 
-// move these to constants header file?
-#include "RMTManager.h"
-#include "DataLinkManager.h"
+#include "constants/rmt.h"
+#include "constants/datalink.h"
+
 #include "Frames.h"
 #include "TopologyBuilder.h"
 #include <vector>
@@ -26,7 +26,7 @@ class TopologyManager {
         esp_err_t verify_topology();
         esp_err_t get_curr_topology(std::unordered_map<uint16_t, std::vector<std::pair<uint8_t, uint16_t>>>& topology);
         esp_err_t write_nvs_topology();
-        esp_err_t get_nvs_topology(std::unordered_map<uint16_t, std::vector<Topology::ChannelBoardConn>>& topology);
+        esp_err_t get_nvs_topology(std::unordered_map<uint16_t, std::vector<std::pair<uint8_t, uint16_t>>>& topology);
 
     private:
         std::unordered_map<uint16_t, std::vector<Topology::ChannelBoardConn>> topology;
diff --git a/main/README.md b/main/README.md
index 215a013..0e1298e 100644
--- a/main/README.md
+++ b/main/README.md
@@ -42,6 +42,10 @@ To run the sample code, add the compiler variable `PP_MOVE=1` when compiling.
 
 You can use the `SRC_BOARD` compiler variable to set a custom board id.
 
+The sample topology used to test:
+
+![Sample Topology Used for Testing](images/sample_topology.png)
+
 # cat
 
 ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⣴⣿⣿⡷⣄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
diff --git a/main/images/sample_topology.png b/main/images/sample_topology.png
new file mode 100644
index 0000000..54504a6
Binary files /dev/null and b/main/images/sample_topology.png differ
diff --git a/main/main_preprogrammed_test.cpp b/main/main_preprogrammed_test.cpp
index 2b36d7c..0d73426 100644
--- a/main/main_preprogrammed_test.cpp
+++ b/main/main_preprogrammed_test.cpp
@@ -44,7 +44,6 @@ extern "C" [[noreturn]] void app_main(void) {
     }
     ESP_ERROR_CHECK(ret);
 
-    esp_netif_init();
     esp_event_loop_create_default();
 
     printf("finished esp init\n");
@@ -140,10 +139,59 @@ extern "C" [[noreturn]] void app_main(void) {
 
     if (res != ESP_OK){
         ESP_LOGE(MOVEMENT_DEBUG_TAG, "Topology verification incorrectly failed");
+        restart();
     } else {
         ESP_LOGI(MOVEMENT_DEBUG_TAG, "Topology verification passed");
     }
 
+    res = obj.write_nvs_topology();
+    
+    if (res == ESP_OK){
+        ESP_LOGI(MOVEMENT_DEBUG_TAG, "Topology NVS write success");
+    } else {
+        ESP_LOGE(MOVEMENT_DEBUG_TAG, "Topology NVS write failed");
+        restart();
+    }
+
+    std::unordered_map<uint16_t, std::vector<std::pair<uint8_t, uint16_t>>> nvs_topology;
+
+    res = obj.get_nvs_topology(nvs_topology);
+    if (res == ESP_OK){
+        ESP_LOGI(MOVEMENT_DEBUG_TAG, "Topology NVS read success");
+    } else {
+        ESP_LOGE(MOVEMENT_DEBUG_TAG, "Topology NVS read failed");
+        restart();
+    }
+
+    if (nvs_topology.size() != test_connections.size()){
+        ESP_LOGE(MOVEMENT_DEBUG_TAG, "Topology NVS size is different");
+        restart();
+    }
+
+    for (const auto& connections : test_connections){
+        const auto& test = connections.first;
+
+        if (nvs_topology.find(connections.second) == nvs_topology.end()){
+            ESP_LOGE(MOVEMENT_DEBUG_TAG, "Failed to find board %d in topology", connections.second);
+            restart();
+        }
+
+        if (test.size() != nvs_topology[connections.second].size()){
+            ESP_LOGE(MOVEMENT_DEBUG_TAG, "Board %d connections are different in topology", connections.second);
+            restart();
+        }
+    }
+
+    ESP_LOGI(MOVEMENT_DEBUG_TAG, "Topology NVS R/W success! Got back the same topology");
+
+    ESP_LOGI(MOVEMENT_DEBUG_TAG, "Topology NVS got:");
+
+    for (const auto& [key, connections] : nvs_topology){
+        for (const auto& c : connections){
+            ESP_LOGI(MOVEMENT_DEBUG_TAG, "Board %d -> board %d on channel %d", key, c.second, c.first);
+        }
+    }
+
     //test removing a board from topology
 
     uint16_t board_id_to_remove = 2;