intermediate: generic handling of user tasks

.gitignore

@@ -3,4 +3,5 @@
 .vscode/c_cpp_properties.json
 .vscode/launch.json
 .vscode/ipch
-generated/*
+generated/*
+lib/generated

extra_script.py

@@ -5,15 +5,17 @@ import os
 import sys
 import inspect
 import json
+import glob
 from datetime import datetime
 Import("env")
 #print(env.Dump())
 OWN_FILE="extra_script.py"
-GEN_DIR='generated'
+GEN_DIR='lib/generated'
 CFG_FILE='web/config.json'
 XDR_FILE='web/xdrconfig.json'
 CFG_INCLUDE='GwConfigDefinitions.h'
 XDR_INCLUDE='GwXdrTypeMappings.h'
+TASK_INCLUDE='GwUserTasks.h'
 EMBEDDED_INCLUDE="GwEmbeddedFiles.h"
 
 def getEmbeddedFiles(env):
@@ -155,6 +157,30 @@ def generateXdrMappings(fp,oh,inFile=''):
     oh.write("\n")
     oh.write("};\n")
 
+def genereateUserTasks(outfile):
+    includes=[]
+    taskdirs=glob.glob(os.path.join('lib','*task*'))
+    for task in taskdirs:
+        #print("##taskdir=%s"%task)
+        base=os.path.basename(task)
+        includeNames=[base.lower()+".h",'gw'+base.lower()+'.h']
+        for f in os.listdir(task):
+            if not f.endswith('.h'):
+                continue
+            match=False
+            for cmp in includeNames:
+                #print("##check %s<->%s"%(f.lower(),cmp))
+                if f.lower() == cmp:
+                    match=True
+            if not match:
+                continue
+            includes.append(f)
+    includeData=""
+    for i in includes:
+        print("#task include %s"%i)
+        includeData+="#include <%s>\n"%i
+    writeFileIfChanged(outfile,includeData)            
+
 def generateEmbedded(elist,outFile):
     content=""
     for entry in elist:
@@ -196,6 +222,7 @@ def prebuild(env):
         else:
             print("#WARNING: infile %s for %s not found"%(inFile,ef))
     generateEmbedded(filedefs,os.path.join(outPath(),EMBEDDED_INCLUDE))
+    genereateUserTasks(os.path.join(outPath(), TASK_INCLUDE))
     generateFile(os.path.join(basePath(),CFG_FILE),os.path.join(outPath(),CFG_INCLUDE),generateCfg)
     generateFile(os.path.join(basePath(),XDR_FILE),os.path.join(outPath(),XDR_INCLUDE),generateXdrMappings)
     version="dev"+datetime.now().strftime("%Y%m%d")

lib/api/GwApi.h

@@ -1,8 +1,8 @@
 #ifndef _GWAPI_H
 #define _GWAPI_H
 #include "GwMessage.h"
-#include "N2kMessages.h"
+#include "N2kMsg.h"
-#include "NMEA0183Messages.h"
+#include "NMEA0183Msg.h"
 #include "GWConfig.h"
 #include "GwBoatData.h"
 //API to be used for additional tasks
@@ -16,4 +16,7 @@ class GwApi{
         virtual GwLog *getLogger()=0;
         virtual GwBoatData *getBoatData()=0;
 };
-#endif
+#ifndef DECLARE_USERTASK
+#define DECLARE_USERTASK(task)
+#endif
+#endif

lib/exampletask/GwExampleHardware.h

@@ -0,0 +1,25 @@
+#ifndef _GWEXAMPLEHARDWARE_H
+#define _GWEXAMPLEHARDWARE_H
+
+#ifdef BOARD_TEST
+#define ESP32_CAN_TX_PIN GPIO_NUM_22
+#define ESP32_CAN_RX_PIN GPIO_NUM_19
+//if using tail485
+#define GWSERIAL_TX 26
+#define GWSERIAL_RX 32
+#define GWSERIAL_MODE "UNI"
+#define GWBUTTON_PIN GPIO_NUM_39
+#define GWBUTTON_ACTIVE LOW
+//if GWBUTTON_PULLUPDOWN we enable a pulup/pulldown
+#define GWBUTTON_PULLUPDOWN
+//led handling
+//if we define GWLED_FASTNET the arduino fastnet lib is used
+#define GWLED_FASTLED
+#define GWLED_TYPE SK6812
+//color schema for fastled
+#define GWLED_SCHEMA GRB
+#define GWLED_PIN  GPIO_NUM_27
+//brightness 0...255
+#define GWLED_BRIGHTNESS 64
+#endif
+#endif

lib/exampletask/GwExampleTask.cpp

@@ -1,4 +1,7 @@
 
+//we only compile for some boards
+#ifdef BOARD_TEST
+#include "GwExampleTask.h"
 #include "GwApi.h"
 
 #define INVALID_COORD -99999
@@ -79,4 +82,6 @@ void exampleTask(void *param){
     }
     vTaskDelete(NULL);
     
-}
+}
+
+#endif

lib/exampletask/GwExampleTask.h

@@ -1,5 +1,11 @@
 #ifndef _GWEXAMPLETASK_H
 #define _GWEXAMPLETASK_H
-//task function
+#include "GwExampleHardware.h"
+#include "GwApi.h"
+//we only compile for some boards
+#ifdef BOARD_TEST
 void exampleTask(void *param);
+//make the task known to the core
+DECLARE_USERTASK(exampleTask);
+#endif
 #endif

lib/exampletask/Readme.md

@@ -0,0 +1,31 @@
+Extending the Core
+==================
+This directory contains an example on how you can extend the base functionality of the gateway.
+Basically you can define own boards here and can add one or more tasks that will be started by the core.
+You can also add additional libraries that will be used for your task.
+In this example we define an addtional board (environment) with the name "testboard".
+When building for this board we add the -DTEST_BOARD to the compilation - see [platformio.ini](platformio.ini).
+The additional task that we defined will only be compiled and started for this environment (see the #ifdef TEST_BOARD in the code).
+You can add your own directory below "lib". The name of the directory must contain "task".
+
+Files
+-----
+   * [platformio.ini](platformio.ini)
+    extend the base configuration - we add a dummy library here and define our buil environment (board)
+   * [GwExampleTask.h](GwExampleTask.h) the name of this include must match the name of the directory (ignoring case) with a "gw" in front. This file includes our special hardware definitions and registers our task at the core (DECLARE_USERTASK in the code).
+   * [GwExampleTaks.cpp](GwExampleTask.cpp) includes the implementation of our task. This tasks runs in an own thread - see the comments in the code.
+   * [GwExampleHardware.h](GwExampleHardware.h) includes our pin definitions for the board.
+
+ Hints
+ -----
+ Just be careful not to interfere with names from the core - so it is a good practice to prefix your files and class like in the example.
+
+ Developing
+ ----------
+ To develop I recommend forking the gateway repository and adding your own directory below lib (with the string task in it's name).
+ As your code goes into a separate directory it should be very easy to fetch upstream changes without the need to adapt your code.
+
+ Future Plans
+ ------------
+ If there will be a need we can extend this extension API by means of adding config items and specific java script code and css for the UI.
+ 

lib/exampletask/platformio.ini

@@ -0,0 +1,10 @@
+[env:testboard]
+board = m5stack-atom
+lib_deps = 
+    ${env.lib_deps}
+    own_lib
+build_flags=
+    -D BOARD_TEST
+    ${env.build_flags}
+upload_port = /dev/esp32
+upload_protocol = esptool    

lib/hardware/GwHardware.h

@@ -13,6 +13,7 @@
 */
 #ifndef _GWHARDWARE_H
 #define _GWHARDWARE_H
+#include "GwUserTasks.h"
 
 //SERIAL_MODE can be: UNI (RX or TX only), BI (both), RX, TX
 //board specific pins

platformio.ini

@@ -7,6 +7,9 @@
 ;
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
+[platformio]
+extra_configs=
+	lib/*task*/platformio.ini
 
 [env]
 platform = espressif32
@@ -19,16 +22,16 @@ lib_deps =
 	ottowinter/ESPAsyncWebServer-esphome@^2.0.1
 	fastled/FastLED @ ^3.4.0
 board_build.embed_files = 
-	generated/index.html.gz
+	lib/generated/index.html.gz
-	generated/index.js.gz
+	lib/generated/index.js.gz
-	generated/index.css.gz
+	lib/generated/index.css.gz
-	generated/config.json.gz
+	lib/generated/config.json.gz
-	generated/xdrconfig.json.gz
+	lib/generated/xdrconfig.json.gz
 board_build.partitions = partitions_custom.csv	
 extra_scripts = 
 	pre:extra_script.py
 	post:post.py
-build_flags = -Igenerated
+lib_ldf_mode = chain+	
 monitor_speed = 115200
 
 [env:m5stack-atom]

src/main.cpp

@@ -30,9 +30,25 @@
 // #define GW_MESSAGE_DEBUG_ENABLED
 // #define FALLBACK_SERIAL
 const unsigned long HEAP_REPORT_TIME=2000; //set to 0 to disable heap reporting
+#include <Arduino.h>
+//user task handling
+std::vector<TaskFunction_t> userTasks;
+
+void registerUserTask(TaskFunction_t task){
+  //logWriter.write("register user task\n");
+  userTasks.push_back(task);
+}
+
+class GwUserTask{
+    public:
+        GwUserTask(TaskFunction_t task){
+            registerUserTask(task);
+        }
+};
+#define DECLARE_USERTASK(task) GwUserTask __##task##__(task);
+//#include "GwUserTasks.h"
 #include "GwHardware.h"
 
-#include <Arduino.h>
 #include <NMEA2000_CAN.h>  // This will automatically choose right CAN library and create suitable NMEA2000 object
 #include <ActisenseReader.h>
 #include <Seasmart.h>
@@ -43,6 +59,7 @@ const unsigned long HEAP_REPORT_TIME=2000; //set to 0 to disable heap reporting
 #include <ArduinoJson.h>
 #include <ESPmDNS.h>
 #include <map>
+#include <vector>
 #include "esp_heap_caps.h"
 
 #include "N2kDataToNMEA0183.h"
@@ -57,14 +74,14 @@ const unsigned long HEAP_REPORT_TIME=2000; //set to 0 to disable heap reporting
 #include "GwSerial.h"
 #include "GwWebServer.h"
 #include "NMEA0183DataToN2K.h"
-#include "GwApi.h"
 #include "GwButtons.h"
 #include "GwLeds.h"
 #include "GwCounter.h"
 #include "GwXDRMappings.h"
-#include "GwExampleTask.h"
 
 
+#include "GwApi.h"
+
 //NMEA message channels
 #define N2K_CHANNEL_ID 0
 #define USB_CHANNEL_ID 1
@@ -74,6 +91,8 @@ const unsigned long HEAP_REPORT_TIME=2000; //set to 0 to disable heap reporting
 #define MAX_NMEA2000_MESSAGE_SEASMART_SIZE 500
 #define MAX_NMEA0183_MESSAGE_SIZE 150 // For AIS
 
+
+
 typedef std::map<String,String> StringMap;
 
 
@@ -211,6 +230,8 @@ class GwSerialLog : public GwLogWriter{
 
 };
 
+GwSerialLog logWriter;
+
 class ApiImpl : public GwApi
 {
 private:
@@ -260,6 +281,7 @@ bool delayedRestart(){
 }
 
 
+
 void startAddOnTask(TaskFunction_t task,int sourceId){
   ApiImpl* api=new ApiImpl(sourceId);
   xTaskCreate(task,"user",2000,api,3,NULL);
@@ -522,9 +544,8 @@ void setup() {
     logger.prefix="FALLBACK:";
   }
   else{
-    GwSerialLog *writer=new GwSerialLog();
     logger.prefix="GWSERIAL:";
-    logger.setWriter(writer);
+    logger.setWriter(&logWriter);
     logger.logDebug(GwLog::LOG,"created GwSerial for USB port");
   }  
   logger.logDebug(GwLog::LOG,"config: %s", config.toString().c_str());
@@ -695,7 +716,12 @@ void setup() {
   startAddOnTask(handleButtons,100);
   setLedMode(LED_GREEN);
   startAddOnTask(handleLeds,101);
-  startAddOnTask(exampleTask,102);
+  int userTaskId=200;
+  for (auto it=userTasks.begin();it != userTasks.end();it++){
+    logger.logDebug(GwLog::LOG,"starting user task with id %d",userTaskId);
+    startAddOnTask(*it,userTaskId);
+    userTaskId++;
+  }
   logger.logDebug(GwLog::LOG,"setup done");
 }  
 //*****************************************************************************