Initial stab at rak6421 autoconf (#7691)

* Initial stab at rak6421 autoconf

* trunk

* Add crc check to eeprom autoconf

* Trunk again

bin/config.d/lora-RAK6421-13300-slot1.yaml

@@ -9,13 +9,4 @@ Lora:
   DIO3_TCXO_VOLTAGE: true
   DIO2_AS_RF_SWITCH: true
   spidev: spidev0.0
-  # CS: 8
+  # CS: 8
-
-
-  ### RAK13300in Slot 2 pins
-#  IRQ: 18 #IO6
-#  Reset: 24 # IO4
-#  Busy: 19 # IO5
-#  # Ant_sw: 23 # IO3 
-#  spidev: spidev0.1
-#  # CS: 7

bin/config.d/lora-RAK6421-13300-slot2.yaml

@@ -0,0 +1,8 @@
+Lora:
+  ### RAK13300in Slot 2 pins
+  IRQ: 18 #IO6
+  Reset: 24 # IO4
+  Busy: 19 # IO5
+  # Ant_sw: 23 # IO3 
+  spidev: spidev0.1
+  # CS: 7

src/mesh/NodeDB.cpp

@@ -225,7 +225,11 @@ NodeDB::NodeDB()
     memcpy(myNodeInfo.device_id.bytes + sizeof(device_id_start), &device_id_end, sizeof(device_id_end));
     myNodeInfo.device_id.size = 16;
     // Uncomment below to print the device id
-
+#elif ARCH_PORTDUINO
+    if (portduino_config.has_device_id) {
+        memcpy(myNodeInfo.device_id.bytes, portduino_config.device_id, 16);
+        myNodeInfo.device_id.size = 16;
+    }
 #else
     // FIXME - implement for other platforms
 #endif

src/platform/portduino/PortduinoGlue.cpp

@@ -10,6 +10,7 @@
 #include "linux/gpio/LinuxGPIOPin.h"
 #include "meshUtils.h"
 #include "yaml-cpp/yaml.h"
+#include <ErriezCRC32.h>
 #include <Utility.h>
 #include <assert.h>
 #include <bluetooth/bluetooth.h>
@@ -253,16 +254,95 @@ void portduinoSetup()
             std::cout << "autoconf: Could not locate CH341 device" << std::endl;
         }
         // Try Pi HAT+
-        std::cout << "autoconf: Looking for Pi HAT+..." << std::endl;
+        if (strlen(autoconf_product) < 6) {
-        if (access("/proc/device-tree/hat/product", R_OK) == 0) {
+            std::cout << "autoconf: Looking for Pi HAT+..." << std::endl;
-            std::ifstream hatProductFile("/proc/device-tree/hat/product");
+            if (access("/proc/device-tree/hat/product", R_OK) == 0) {
-            if (hatProductFile.is_open()) {
+                std::ifstream hatProductFile("/proc/device-tree/hat/product");
-                hatProductFile.read(autoconf_product, 95);
+                if (hatProductFile.is_open()) {
-                hatProductFile.close();
+                    hatProductFile.read(autoconf_product, 95);
+                    hatProductFile.close();
+                }
+                std::cout << "autoconf: Found Pi HAT+ " << autoconf_product << " at /proc/device-tree/hat/product" << std::endl;
+            } else {
+                std::cout << "autoconf: Could not locate Pi HAT+ at /proc/device-tree/hat/product" << std::endl;
+            }
+        }
+        // attempt to load autoconf data from an EEPROM on 0x50
+        //      RAK6421-13300-S1:aabbcc123456:5ba85807d92138b7519cfb60460573af:3061e8d8
+        // <model string>:mac address :<16 random unique bytes in hexidecimal> : crc32
+        // crc32 is calculated on the eeprom string up to but not including the final colon
+        if (strlen(autoconf_product) < 6) {
+            try {
+                char *mac_start = nullptr;
+                char *devID_start = nullptr;
+                char *crc32_start = nullptr;
+                Wire.begin();
+                Wire.beginTransmission(0x50);
+                Wire.write(0x0);
+                Wire.write(0x0);
+                Wire.endTransmission();
+                Wire.requestFrom((uint8_t)0x50, (uint8_t)75);
+                uint8_t i = 0;
+                delay(100);
+                std::string autoconf_raw;
+                while (Wire.available() && i < sizeof(autoconf_product)) {
+                    autoconf_product[i] = Wire.read();
+                    if (autoconf_product[i] == 0xff) {
+                        autoconf_product[i] = 0x0;
+                        break;
+                    }
+                    autoconf_raw += autoconf_product[i];
+                    if (autoconf_product[i] == ':') {
+                        autoconf_product[i] = 0x0;
+                        if (mac_start == nullptr) {
+                            mac_start = autoconf_product + i + 1;
+                        } else if (devID_start == nullptr) {
+                            devID_start = autoconf_product + i + 1;
+                        } else if (crc32_start == nullptr) {
+                            crc32_start = autoconf_product + i + 1;
+                        }
+                    }
+                    i++;
+                }
+                if (crc32_start != nullptr && strlen(crc32_start) == 8) {
+                    std::string crc32_str(crc32_start);
+                    uint32_t crc32_value = 0;
+
+                    // convert crc32 ascii to raw uint32
+                    for (int j = 0; j < 4; j++) {
+                        crc32_value += std::stoi(crc32_str.substr(j * 2, 2), nullptr, 16) << (3 - j) * 8;
+                    }
+                    std::cout << "autoconf: Found eeprom crc " << crc32_start << std::endl;
+
+                    // set the autoconf string to blank and short circuit
+                    if (crc32_value != crc32Buffer(autoconf_raw.c_str(), i - 9)) {
+                        std::cout << "autoconf: crc32 mismatch, dropping " << std::endl;
+                        autoconf_product[0] = 0x0;
+                    } else {
+                        std::cout << "autoconf: Found eeprom data " << autoconf_raw << std::endl;
+                        if (mac_start != nullptr) {
+                            std::cout << "autoconf: Found mac data " << mac_start << std::endl;
+                            if (strlen(mac_start) == 12)
+                                settingsStrings[mac_address] = std::string(mac_start);
+                        }
+                        if (devID_start != nullptr) {
+                            std::cout << "autoconf: Found deviceid data " << devID_start << std::endl;
+                            if (strlen(devID_start) == 32) {
+                                std::string devID_str(devID_start);
+                                for (int j = 0; j < 16; j++) {
+                                    portduino_config.device_id[j] = std::stoi(devID_str.substr(j * 2, 2), nullptr, 16);
+                                }
+                                portduino_config.has_device_id = true;
+                            }
+                        }
+                    }
+                } else {
+                    std::cout << "autoconf: crc32 missing " << std::endl;
+                    autoconf_product[0] = 0x0;
+                }
+            } catch (...) {
+                std::cout << "autoconf: Could not locate EEPROM" << std::endl;
             }
-            std::cout << "autoconf: Found Pi HAT+ " << autoconf_product << " at /proc/device-tree/hat/product" << std::endl;
-        } else {
-            std::cout << "autoconf: Could not locate Pi HAT+ at /proc/device-tree/hat/product" << std::endl;
         }
         // Load the config file based on the product string
         if (strlen(autoconf_product) > 0) {

src/platform/portduino/PortduinoGlue.h

@@ -10,11 +10,14 @@
 // Product strings for auto-configuration
 // {"PRODUCT_STRING", "CONFIG.YAML"}
 // YAML paths are relative to `meshtastic/available.d`
-inline const std::unordered_map<std::string, std::string> configProducts = {{"MESHTOAD", "lora-usb-meshtoad-e22.yaml"},
+inline const std::unordered_map<std::string, std::string> configProducts = {
-                                                                            {"MESHSTICK", "lora-meshstick-1262.yaml"},
+    {"MESHTOAD", "lora-usb-meshtoad-e22.yaml"},
-                                                                            {"MESHADV-PI", "lora-MeshAdv-900M30S.yaml"},
+    {"MESHSTICK", "lora-meshstick-1262.yaml"},
-                                                                            {"MeshAdv Mini", "lora-MeshAdv-Mini-900M22S.yaml"},
+    {"MESHADV-PI", "lora-MeshAdv-900M30S.yaml"},
-                                                                            {"POWERPI", "lora-MeshAdv-900M30S.yaml"}};
+    {"MeshAdv Mini", "lora-MeshAdv-Mini-900M22S.yaml"},
+    {"POWERPI", "lora-MeshAdv-900M30S.yaml"},
+    {"RAK6421-13300-S1", "lora-RAK6421-13300-slot1.yaml"},
+    {"RAK6421-13300-S2", "lora-RAK6421-13300-slot2.yaml"}};
 
 enum configNames {
     default_gpiochip,
@@ -135,4 +138,6 @@ extern struct portduino_config_struct {
     uint32_t rfswitch_dio_pins[5] = {RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC};
     Module::RfSwitchMode_t rfswitch_table[8];
     bool force_simradio = false;
+    bool has_device_id = false;
+    uint8_t device_id[16] = {0};
 } portduino_config;