add configurable fanpower for simwind and new PWM sketch (#37)

conf/monocoque.config

@@ -220,6 +220,7 @@ configs = (
             config       = "None";
             baud         = 115200;
             devpath      = "/dev/simdev1";
+            fanpower     = 0.6;
         },
 
         {
@@ -228,6 +229,7 @@ configs = (
             config       = "None";
             baud         = 115200;
             devpath      = "/dev/simdev1";
+            fanpower     = 0.6;
         },
 
         {

src/arduino/simwind_pwm/Makefile

@@ -0,0 +1,166 @@
+# Makefile for Arduino based scketches
+#
+# Copyright 2020 Valerio Di Giampietro http://va.ler.io v@ler.io
+# MIT License - see License.txt file
+#
+# This Makefile uses the arduino-cli, the Arduino command line interface
+# and has been designed and tested to run on Linux, not on Windows.
+# Probably it will run on a Mac, but it has not been tested.
+#
+# Please note that:
+#
+#   1. each sketch must reside in his own folder with this Makefile
+#
+#   2. the main make targets are:
+#      - all     compiles and upload
+#      - compile compiles only
+#      - upload  upload via serial port, compile if the binary file is
+#                not available
+#      - ota     upload Over The Air, automatically find the device
+#                IP address using the IOT_NAME (device hostname)
+#      - clean   clean the build directory
+#      - find    find OTA updatable devices on the local subnet
+#      - requirements it the file "requirements.txt" exists it will
+#                     install the libraries listed in this file
+#
+#      default is "all"
+#
+#   3. it gets the name of the sketch using the wildcard make command;
+#      the name is *.ino; this means that you must have ONLY a file
+#      with .ino extension, otherwise this makefile will break.  This
+#      also means that you can use this Makefile, almost unmodified,
+#      for any sketch as long as you keep a single .ino file in each
+#      folder
+#
+#   4. you can split your project in multiple files, if you wish,
+#      using a single .ino file and multiple .h files, that you can
+#      include in the .ino file with an '#include "myfile.h"'
+#      directive
+#
+# Optionally some environment variables can be set:
+#
+#   FQBN        Fully Qualified Board Name; if not set in the environment
+#               it will be assigned a value in this makefile
+#
+#   SERIAL_DEV  Serial device to upload the sketch; if not set in the
+#               environment it will be assigned:
+#               /dev/ttyUSB0   if it exists, or
+#               /dev/ttyACM0   if it exists, or
+#               unknown
+#
+#   IOT_NAME    Name of the IOT device; if not set in the environment
+#               it will be assigned a value in this makefile. This is
+#               very useful for OTA update, the device will be searched
+#               on the local subnet using this name
+#
+#   OTA_PORT    Port used by OTA update; if not set in the environment
+#               it will be assigned the default value of 8266 in this
+#               makefile
+#
+#   OTA_PASS    Password used for OTA update; if not set in the environment
+#               it will be assigned the default value of an empty string
+#
+#   V           verbose flag; can be 0 (quiet) or 1 (verbose); if not set
+#               in the environment it will be assigned a default value
+#               in this makefile
+
+
+MAKE_DIR   := $(PWD)
+#
+# ----- setup wor Wemos D1 mini -----
+#FQBN       ?= esp8266:esp8266:d1_mini
+#IOT_NAME   ?= esp8266-meteo
+#OTA_PORT   ?= 8266
+#OTA_PASS   ?=
+# ----- setup for Arduino Uno
+FQBN        ?= arduino:avr:uno
+# ----- ---------------------
+V          ?= 0
+VFLAG      =
+
+ifeq "$(V)" "1"
+VFLAG      =-v
+endif
+
+ifndef SERIAL_DEV
+  ifneq (,$(wildcard /dev/ttyUSB0))
+    SERIAL_DEV = /dev/ttyUSB0
+  else ifneq (,$(wildcard /dev/ttyACM0))
+    SERIAL_DEV = /dev/ttyACM0
+  else
+    SERIAL_DEV = unknown
+  endif
+endif
+
+BUILD_DIR  := $(subst :,.,build/$(FQBN))
+
+SRC        := $(wildcard *.ino)
+HDRS       := $(wildcard *.h)
+BIN        := $(BUILD_DIR)/$(SRC).bin
+ELF        := $(BUILD_DIR)/$(SRC).elf
+
+$(info FQBN       is [${FQBN}])
+$(info IOT_NAME   is [${IOT_NAME}])
+$(info OTA_PORT   is [${OTA_PORT}])
+$(info OTA_PASS   is [${OTA_PASS}])
+$(info V          is [${V}])
+$(info VFLAG      is [${VFLAG}])
+$(info MAKE_DIR   is [${MAKE_DIR}])
+$(info BUILD_DIR  is [${BUILD_DIR}])
+$(info SRC        is [${SRC}])
+$(info HDRS       is [${HDRS}])
+$(info BIN        is [${BIN}])
+$(info SERIAL_DEV is [${SERIAL_DEV}])
+
+all: $(ELF) upload
+.PHONY: all
+
+compile: $(ELF)
+.PHONY: compile
+
+$(ELF): $(SRC) $(HDRS)
+	arduino-cli compile -b $(FQBN) $(VFLAG)
+	@if which arduino-manifest.pl; \
+	then echo "---> Generating manifest.txt"; \
+	arduino-manifest.pl -b $(FQBN) $(SRC) $(HDRS) > manifest.txt; \
+	else echo "---> If you want to generate manifest.txt, listing used libraries and their versions,"; \
+	echo "---> please install arduino-manifest, see https://github.com/digiampietro/arduino-manifest"; \
+	fi
+
+upload:
+	@if [ ! -c $(SERIAL_DEV) ] ; \
+	then echo "---> ERROR: Serial Device not available, please set the SERIAL_DEV environment variable" ; \
+	else echo "---> Uploading sketch\n"; \
+	arduino-cli upload -b $(FQBN) -p $(SERIAL_DEV) $(VFLAG); \
+	fi
+
+ota:
+	@PLAT_PATH=`arduino-cli compile -b $(FQBN) --show-properties | grep '^runtime.platform.path' | awk -F= '{print $$2}'` ; \
+	   PY_PATH=`arduino-cli compile -b $(FQBN) --show-properties | grep '^runtime.tools.python3.path' | awk -F= '{print $$2}'` ; \
+	IOT_IP=`avahi-browse _arduino._tcp --resolve --parsable --terminate|grep -i ';$(IOT_NAME);'|grep ';$(OTA_PORT);'| awk -F\; '{print $$8}'|head -1`; \
+	BINFILE=$(wildcard $(BUILD_DIR)/$(SRC)*bin); \
+	echo "PLAT_PATH  is [$$PLAT_PATH]" ; \
+	echo "PY_PATH:   is [$$PY_PATH]"  ; \
+	echo "IOT_IP:    is [$$IOT_IP]"   ; \
+	echo "BINFILE:   is [$$BINFILE]"  ; \
+	if [ "$$IOT_IP" = "" ] ; \
+	then echo "Unable to find device IP. Check that the IOT_NAME environment variable is correctly set. Use 'make find' to search devices"; \
+	else echo "---> Uploading Over The Air"; \
+	$$PY_PATH/python3 $$PLAT_PATH/tools/espota.py -i $$IOT_IP -p $(OTA_PORT) --auth=$(OTA_PASS) -f $$BINFILE ;\
+	fi
+
+clean:
+	@echo "---> Cleaning the build directory"
+	rm -rf build
+
+find:
+	avahi-browse _arduino._tcp --resolve --parsable --terminate
+
+requirements:
+	@if [ -e requirements.txt ]; \
+	then while read -r i ; do echo ; \
+	  echo "---> Installing " '"'$$i'"' ; \
+	  arduino-cli lib install "$$i" ; \
+	done < requirements.txt ; \
+	else echo "---> MISSING requirements.txt file"; \
+	fi

src/arduino/simwind_pwm/simwind.h

@@ -0,0 +1,15 @@
+#ifndef _SIMWINDDATA_H
+#define _SIMWINDDATA_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+typedef struct
+{
+    uint8_t velocity;
+    uint8_t fanpower;
+}
+SimWindData;
+
+
+#endif

src/arduino/simwind_pwm/simwind_pwm.ino

@@ -0,0 +1,56 @@
+#include "simwind.h"
+
+// ============================================================
+// Configuration
+// ============================================================
+#define BAUD_RATE       115200
+#define PWM_PIN_1       9       // Fan PWM output pins
+#define PWM_PIN_2       10      //
+#define PWM_MAX         320     // Max PWM value for 25kHz (16MHz / 25kHz / 2)
+#define SPEED_MIN       0       // Min speed (mph) — fans off below this
+#define SPEED_MAX       100     // Max speed (mph) — full fan speed at this
+#define SPEED_THRESHOLD 5       // Below this speed fans are off
+// ============================================================
+
+#define BYTE_SIZE sizeof(SimWindData)
+
+int velocity = 0;
+int fanpower = 0;
+
+void setup() {
+    Serial.begin(BAUD_RATE);
+
+    // Configure Timer1 for Phase Correct PWM at 25kHz duty cycle
+    // Mode 10: Phase Correct PWM, TOP = ICR1
+    // WGM13:WGM12:WGM11:WGM10 = 1:0:1:0
+    TCCR1A = _BV(COM1A1) | _BV(COM1B1) | _BV(WGM11);
+    TCCR1B = _BV(WGM13) | _BV(CS10);   // <-- WGM13 restored, no prescaler
+    ICR1 = PWM_MAX;                      // TOP = 320 → 16MHz / (2 * 320) = 25kHz
+    pinMode(PWM_PIN_1, OUTPUT);
+    pinMode(PWM_PIN_2, OUTPUT);
+    OCR1A = 0;
+    OCR1B = 0;
+}
+
+void loop() {
+    char buff[BYTE_SIZE];
+    if (Serial.available() >= BYTE_SIZE) {
+        if (Serial.readBytes(buff, BYTE_SIZE) != BYTE_SIZE) return;
+        union { SimWindData data; char bytes[BYTE_SIZE]; } u;
+        memcpy(u.bytes, buff, BYTE_SIZE);
+        velocity = u.data.velocity;
+        fanpower = u.data.fanpower;
+    }
+
+    int pwm = 0;
+    if (velocity > SPEED_THRESHOLD) {
+        // Square root scaling for slightly stronger sensation at lower speeds
+        // fanpower (0-255) scales the overall intensity
+        float powerScale = (float)fanpower / 255.0;
+        pwm = (int)(sqrt((float)velocity / SPEED_MAX) * PWM_MAX * powerScale);
+        pwm = constrain(pwm, 0, PWM_MAX);
+    }
+
+    OCR1A = pwm;
+    OCR1B = pwm;
+}

src/monocoque/devices/serialdevice.c

@@ -118,8 +118,9 @@ int arduino_simwind_update(SimDevice* this, SimData* simdata)
     serialdevice->u.simwinddata.velocity = ceil(simdata->velocity*KPHTOMPH);
 
     slogt("Updating arduino device speed to %i", serialdevice->u.simwinddata.velocity);
-    // this can be added to the config, all config dependent can be added to init
+
-    serialdevice->u.simwinddata.fanpower = (int)0.6 * 255;
+    serialdevice->u.simwinddata.fanpower = (int)(serialdevice->fanpower * 255);
+    slogt("Sending fanpower: %i (from config: %f)", serialdevice->u.simwinddata.fanpower, serialdevice->fanpower);
     size_t size = sizeof(SimWindData);
 
     arduino_update(serialdevice, &serialdevice->u.simwinddata, size);
@@ -318,7 +319,8 @@ SerialDevice* new_serial_device(DeviceSettings* ds, MonocoqueSettings* ms, SimIn
         case (SIMDEVTYPE_SIMWIND):
             this->devicetype = ARDUINODEV__SIMWIND;
             this->m.vtable = &arduino_simwind_vtable;
-            slogi("Initializing arduino devices for sim wind.");
+            this->fanpower = ds->serialdevsettings.fanpower;
+            slogi("Initializing arduino devices for sim wind with fanpower: %f", this->fanpower);
             break;
         case (SIMDEVTYPE_ARDUINOCUSTOM):
             this->devicetype = ARDUINODEV__CUSTOM;
@@ -342,6 +344,7 @@ SerialDevice* new_serial_device(DeviceSettings* ds, MonocoqueSettings* ms, SimIn
             this->u.simhapticdata.effect4 = 0;
             this->state = 0;
             this->ampfactor = ds->serialdevsettings.ampfactor;
+            this->fanpower = ds->serialdevsettings.fanpower;
             slogi("Initializing arduino device for haptic effects.");
             break;
         case (SIMDEVTYPE_SERIALWHEEL):

src/monocoque/devices/simdevice.h

@@ -66,6 +66,7 @@ typedef struct
     int endled;
     int baudrate;
     double ampfactor;
+    double fanpower;
     double state;
     union
     {

src/monocoque/helper/confighelper.c

@@ -861,7 +861,11 @@ int devsetup(const char* device_type, const char* device_subtype, const char* co
             found = config_setting_lookup_float(device_settings, "ampfactor", &ampfactor);
             ds->serialdevsettings.ampfactor = ampfactor;
 
-            slogt("set port baud rate to %i, ampfactor %f", baud, ampfactor);
+            double fanpower = 0.6;
+            config_setting_lookup_float(device_settings, "fanpower", &fanpower);
+            ds->serialdevsettings.fanpower = fanpower;
+
+            slogt("set port baud rate to %i, ampfactor %f, fanpower %f", baud, ampfactor, fanpower);
 
         }
 

src/monocoque/helper/confighelper.h

@@ -168,6 +168,7 @@ typedef struct
     int startled;
     int endled;
     float ampfactor;
+    float fanpower;
     int baud;
 }
 SerialDeviceSettings;