Add custom firmwares

content/sv/docs/firmware/_index.md

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+---
+title: Custom Firmware
+toc_hide: true
+_build:
+  render: true
+  list: false
+  publishResources: false
+---
+
+
+## Binärer
+{{% alert title="Varning" color="danger" %}}
+Att ladda ner firmware från internet medför alltid en risk. Istället bör du själv genomföra kodändringarna nedan och kompilera firmware själv.
+{{% /alert %}}
+* [ros-firmware-rak4631-2.6.4.b89355f.uf2](/ros-firmware-rak4631-2.6.4.b89355f.uf2)
+* [ros-firmware-rak4631-2.5.21.447533a.uf2](/ros-firmware-rak4631-2.5.21.447533a.uf2)
+* [nrf_erase2.uf2](/nrf_erase2.uf2)
+
+## Kodändringar
+Nedan är de ändringar jag gör på firmwaren för att det ska passa mig.
+
+### Channels.cpp
+```diff
+-    channelSettings.module_settings.position_precision = 13; // default to sending location on the primary channel
++    channelSettings.module_settings.position_precision = 32; // default to sending location on the primary channel
+```
+
+### NeighborInfoModule.cpp
+Tillåt sändning av Neighbor info över default kanalen.
+```diff
+int32_t NeighborInfoModule::runOnce()
+{
+    if (moduleConfig.neighbor_info.transmit_over_lora &&
+-       (!channels.isDefaultChannel(channels.getPrimaryIndex()) || !RadioInterface::uses_default_frequency_slot) &&
+        airTime->isTxAllowedChannelUtil(true) && airTime->isTxAllowedAirUtil()) {
+        sendNeighborInfo(NODENUM_BROADCAST, false);
+    } else {
+        sendNeighborInfo(NODENUM_BROADCAST_NO_LORA, false);
+    }
+    return Default::getConfiguredOrDefaultMs(moduleConfig.neighbor_info.update_interval, default_neighbor_info_broadcast_secs);
+}
+```
+
+Behåll noder längre i neighbor info databasen. 
+Då noder inte sänder nodinfo om channel utilization är för hög så vill vi låta dom vara kvar lite längre.
+```diff
+void NeighborInfoModule::cleanUpNeighbors()
+{
+    uint32_t now = getTime();
+    NodeNum my_node_id = nodeDB->getNodeNum();
+    for (auto it = neighbors.rbegin(); it != neighbors.rend();) {
+        // We will remove a neighbor if we haven't heard from them in twice the broadcast interval
+        // cannot use isWithinTimespanMs() as it->last_rx_time is seconds since 1970
+-        if ((now - it->last_rx_time > it->node_broadcast_interval_secs * 2) && (it->node_id != my_node_id)) {
++        if ((now - it->last_rx_time > it->node_broadcast_interval_secs * 4) && (it->node_id != my_node_id)) {
+            LOG_DEBUG("Remove neighbor with node ID 0x%x", it->node_id);
+            it = std::vector<meshtastic_Neighbor>::reverse_iterator(
+                neighbors.erase(std::next(it).base())); // Erase the element and update the iterator
+        } else {
+            ++it;
+        }
+    }
+}
+```
+
+### MQTT.h
+```diff
+-    const uint32_t default_map_position_precision = 14;         // defaults to max. offset of ~1459m
++    const uint32_t default_map_position_precision = 32;         // defaults to max. offset of ~1459m
+
+```
+
+### MQTT.c
+Respektera __inte__ OK_TO_MQTT flaggan
+```diff
+- // For uplinking other's packets, check if it's not OK to MQTT or if it's an older packet without the bitfield
+- bool dontUplink = !mp_decoded.decoded.has_bitfield || !(mp_decoded.decoded.bitfield & BITFIELD_OK_TO_MQTT_MASK);
+- // check for the lowest bit of the data bitfield set false, and the use of one of the default keys.
+- if (!isFromUs(&mp_decoded) && !isMqttServerAddressPrivate && dontUplink &&
+-     (ch.settings.psk.size < 2 || (ch.settings.psk.size == 16 && memcmp(ch.settings.psk.bytes, defaultpsk, 16)) ||
+-         (ch.settings.psk.size == 32 && memcmp(ch.settings.psk.bytes, eventpsk, 32)))) {
+-     LOG_INFO("MQTT onSend - Not forwarding packet due to DontMqttMeBro flag");
+-     return;
+- }
+```