System page with N2K device list by improved patching feature and patch

lib/obp60task/PageSystem.cpp

@@ -15,6 +15,7 @@
 #include "images/logo64.xbm"
 #include <esp32/clk.h>
 #include "qrcode.h"
+#include <vector>
 
 #ifdef BOARD_OBP40S3
 #include "dirent.h"
@@ -40,6 +41,7 @@ private:
     String rtc_module;
     String gps_module;
     String env_module;
+    String flashLED;
 
     String batt_sensor;
     String solar_sensor;
@@ -50,6 +52,17 @@ private:
 
     char mode = 'N'; // (N)ormal, (S)ettings, (D)evice list, (C)ard
 
+#ifdef PATCH_N2K
+    struct device {
+        uint64_t NAME;
+        uint8_t id;
+        char hex_name[17];
+        uint16_t manuf_code;
+        const char *model;
+    };
+    std::vector<device> devicelist;
+#endif
+
 public:
     PageSystem(CommonData &common){
         commonData = &common;
@@ -76,6 +89,7 @@ public:
         rot_sensor = common.config->getString(common.config->useRotSensor);
         homelat = common.config->getString(common.config->homeLAT).toDouble();
         homelon = common.config->getString(common.config->homeLON).toDouble();
+        flashLED = common.config->getString(common.config->flashLED);
     }
 
     void setupKeys() {
@@ -168,19 +182,43 @@ public:
         }
     }
 
+    void displayNew(PageData &pageData) {
+#ifdef BOARD_OBP60S3
+        // Clear optical warning
+        if (flashLED == "Limit Violation") {
+            setBlinkingLED(false);
+            setFlashLED(false);
+        }
+#endif
+
+#ifdef PATCH_N2K
+        // load current device list
+        tN2kDeviceList *pDevList = pageData.api->getN2kDeviceList();
+        // TODO check if changed
+        if (pDevList->ReadResetIsListUpdated()) {
+            // only reload if changed
+            devicelist.clear();
+            for (uint8_t i = 0; i <= 252; i++) {
+                const tNMEA2000::tDevice *d = pDevList->FindDeviceBySource(i);
+                if (d == nullptr) {
+                    continue;
+                }
+                device dev;
+                dev.id = i;
+                dev.NAME = d->GetName();
+                snprintf(dev.hex_name, sizeof(dev.hex_name), "%08X%08X", (uint32_t)(dev.NAME >> 32), (uint32_t)(dev.NAME & 0xFFFFFFFF));
+                dev.manuf_code = d->GetManufacturerCode();
+                dev.model = d->GetModelID();
+                devicelist.push_back(dev);
+            }
+        }
+#endif
+    };
+
     int displayPage(PageData &pageData){
         GwConfigHandler *config = commonData->config;
         GwLog *logger = commonData->logger;
 
-        // Get config data
-        String flashLED = config->getString(config->flashLED);
-
-        // Optical warning by limit violation (unused)
-        if(String(flashLED) == "Limit Violation"){
-            setBlinkingLED(false);
-            setFlashLED(false); 
-        }
-
         // Logging boat values
         logger->logDebug(GwLog::LOG, "Drawing at PageSystem, Mode=%c", mode);
 
@@ -461,12 +499,54 @@ public:
             getdisplay().print("NMEA2000 device list");
 
             getdisplay().setFont(&Ubuntu_Bold8pt8b);
-            getdisplay().setCursor(20, 80);
+            getdisplay().setCursor(20, 70);
             getdisplay().print("RxD: ");
             getdisplay().print(String(commonData->status.n2kRx));
-            getdisplay().setCursor(20, 100);
+            getdisplay().setCursor(120, 70);
             getdisplay().print("TxD: ");
             getdisplay().print(String(commonData->status.n2kTx));
+
+#ifdef PATCH_N2K
+            x0 = 20;
+            y0 = 100;
+
+            getdisplay().setFont(&Ubuntu_Bold10pt8b);
+            getdisplay().setCursor(x0, y0);
+            getdisplay().print("ID");
+            getdisplay().setCursor(x0 + 50, y0);
+            getdisplay().print("Model");
+            getdisplay().setCursor(x0 + 250, y0);
+            getdisplay().print("Manuf.");
+            getdisplay().drawLine(18, y0 + 4, 360 , y0 + 4 , commonData->fgcolor);
+
+            getdisplay().setFont(&Ubuntu_Bold8pt8b);
+            y0 = 120;
+            uint8_t n_dev = 0;
+            for (const device& item : devicelist) {
+                if (n_dev > 8) {
+                    break;
+                }
+                getdisplay().setCursor(x0, y0 + n_dev * 20);
+                getdisplay().print(item.id);
+                getdisplay().setCursor(x0 + 50, y0 + n_dev * 20);
+                getdisplay().print(item.model);
+                getdisplay().setCursor(x0 + 250, y0 + n_dev * 20);
+                getdisplay().print(item.manuf_code);
+                n_dev++;
+            }
+            getdisplay().setCursor(x0, y0 + (n_dev + 1) * 20);
+            if (n_dev == 0) {
+                getdisplay().printf("no devices found on bus");
+
+            } else {
+                getdisplay().drawLine(18, y0 + n_dev * 20, 360 , y0 + n_dev * 20, commonData->fgcolor);
+                getdisplay().printf("%d devices of %d in total", n_dev, devicelist.size());
+            }
+#else
+            getdisplay().setCursor(20, 100);
+            getdisplay().print("NMEA2000 not exposed to obp60 task");
+#endif
+
         }
 
         // Update display

lib/obp60task/extra_task.py

@@ -2,6 +2,14 @@
 
 import subprocess
 
+def cleanup_patches(source, target, env):
+    for p in patchfiles:
+        patch = os.path.join(patchdir, p)
+        print(f"removing {patch}")
+        res = subprocess.run(["git", "apply", "-R", patch], capture_output=True, text=True)
+        if res.returncode != 0:
+            print(res.stderr)
+
 patching = False
 
 epdtype = "unknown"
@@ -46,11 +54,13 @@ if patching:
         print("patchdir not found, no patches applied")
     else:
         patchfiles = [f for f in os.listdir(patchdir)]
-        for p in patchfiles:
+        if len(patchfiles) > 0:
-            patch = os.path.join(patchdir, p)
+            for p in patchfiles:
-            print(f"applying {patch}")
+                patch = os.path.join(patchdir, p)
-            res = subprocess.run(["git", "apply", patch], capture_output=True, text=True)
+                print(f"applying {patch}")
-            if res.returncode != 0:
+                res = subprocess.run(["git", "apply", patch], capture_output=True, text=True)
-                print(res.stderr)
+                if res.returncode != 0:
+                    print(res.stderr)
+            env.AddPostAction("$PROGPATH", cleanup_patches)
         else:
             print("no patches found")

lib/obp60task/patches/01-nmea2000.patch

@@ -0,0 +1,103 @@
+diff --git a/lib/api/GwApi.h b/lib/api/GwApi.h
+index 88f9690..9663a65 100644
+--- a/lib/api/GwApi.h
++++ b/lib/api/GwApi.h
+@@ -2,6 +2,8 @@
+ #define _GWAPI_H
+ #include "GwMessage.h"
+ #include "N2kMsg.h"
++#include "Nmea2kTwai.h"
++#include "N2kDeviceList.h"
+ #include "NMEA0183Msg.h"
+ #include "GWConfig.h"
+ #include "GwBoatData.h"
+@@ -222,6 +224,8 @@ class GwApi{
+          * accessing boat data must only be executed from within the main thread
+          * you need to use the request pattern as shown in GwExampleTask.cpp
+          */
++        virtual Nmea2kTwai *getNMEA2000()=0;
++        virtual tN2kDeviceList *getN2kDeviceList()=0;
+         virtual GwBoatData *getBoatData()=0;
+         virtual ~GwApi(){}
+ };
+diff --git a/lib/obp60task/OBP60Extensions.h b/lib/obp60task/OBP60Extensions.h
+index 604c356..2fe4496 100644
+--- a/lib/obp60task/OBP60Extensions.h
++++ b/lib/obp60task/OBP60Extensions.h
+@@ -15,6 +15,9 @@
+ #define MOUNT_POINT "/sdcard"
+ #endif
+ 
++// Patches to apply to gateway code
++#define PATCH_N2K
++
+ // FRAM address reservations 32kB: 0x0000 - 0x7FFF
+ // 0x0000 - 0x03ff: single variables
+ #define FRAM_PAGE_NO 0x0002
+diff --git a/lib/usercode/GwUserCode.cpp b/lib/usercode/GwUserCode.cpp
+index 1b007f8..90087d4 100644
+--- a/lib/usercode/GwUserCode.cpp
++++ b/lib/usercode/GwUserCode.cpp
+@@ -216,6 +216,14 @@ public:
+     {
+         return api->getLogger();
+     }
++    virtual Nmea2kTwai *getNMEA2000()
++    {
++        return api->getNMEA2000();
++    }
++    virtual tN2kDeviceList *getN2kDeviceList()
++    {
++        return api->getN2kDeviceList();
++    }
+     virtual GwBoatData *getBoatData()
+     {
+         return api->getBoatData();
+@@ -428,4 +436,4 @@ void GwUserCode::handleWebRequest(const String &url,AsyncWebServerRequest *req){
+     }
+     LOG_DEBUG(GwLog::DEBUG,"no task found for web request %s[%s]",url.c_str(),tname.c_str());
+     req->send(404, "text/plain", "not found");
+-}
+\ No newline at end of file
++}
+diff --git a/src/main.cpp b/src/main.cpp
+index 44c715f..fdb0366 100644
+--- a/src/main.cpp
++++ b/src/main.cpp
+@@ -100,6 +100,7 @@ GwLog logger(LOGLEVEL,NULL);
+ GwConfigHandler config(&logger);
+ 
+ #include "Nmea2kTwai.h"
++#include <N2kDeviceList.h>
+ static const unsigned long CAN_RECOVERY_PERIOD=3000; //ms
+ static const unsigned long NMEA2000_HEARTBEAT_INTERVAL=5000;
+ class Nmea2kTwaiLog : public Nmea2kTwai{
+@@ -126,6 +127,7 @@ class Nmea2kTwaiLog : public Nmea2kTwai{
+ #endif
+ 
+ Nmea2kTwai &NMEA2000=*(new Nmea2kTwaiLog((gpio_num_t)ESP32_CAN_TX_PIN,(gpio_num_t)ESP32_CAN_RX_PIN,CAN_RECOVERY_PERIOD,&logger));
++tN2kDeviceList *pN2kDeviceList;
+ 
+ #ifdef GWBUTTON_PIN
+ bool fixedApPass=false;
+@@ -333,6 +335,12 @@ public:
+     status.n2kTx=countNMEA2KOut.getGlobal();
+     channels.fillStatus(status);
+   }
++  virtual Nmea2kTwai *getNMEA2000(){
++    return &NMEA2000;
++  }
++  virtual tN2kDeviceList *getN2kDeviceList(){
++    return pN2kDeviceList;
++  }
+   virtual GwBoatData *getBoatData(){
+     return &boatData;
+   }
+@@ -935,6 +943,7 @@ void setup() {
+   NMEA2000.SetMsgHandler([](const tN2kMsg &n2kMsg){
+     handleN2kMessage(n2kMsg,N2K_CHANNEL_ID);
+   });
++  pN2kDeviceList = new tN2kDeviceList(&NMEA2000);
+   NMEA2000.Open();
+   logger.logDebug(GwLog::LOG,"starting addon tasks");
+   logger.flush();