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nano_nora: add Arduino Nano ESP32 board support
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‎boards.txt

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Original file line numberDiff line numberDiff line change
@@ -24112,3 +24112,54 @@ nebulas3.menu.EraseFlash.all=Enabled
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nebulas3.menu.EraseFlash.all.upload.erase_cmd=-e
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##############################################################
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nano_nora.name=Arduino Nano ESP32
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nano_nora.vid.0=0x2341
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nano_nora.pid.0=0x0070
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nano_nora.upload_port.0.vid=0x2341
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nano_nora.upload_port.0.pid=0x0070
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nano_nora.bootloader.tool=esptool_py
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nano_nora.bootloader.tool.default=esptool_py
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nano_nora.upload.tool=dfu-util
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nano_nora.upload.tool.default=dfu-util
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nano_nora.upload.tool.network=esp_ota
24128+
nano_nora.upload.protocol=serial
24129+
nano_nora.upload.maximum_size=3145728
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nano_nora.upload.maximum_data_size=327680
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nano_nora.upload.use_1200bps_touch=false
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nano_nora.upload.wait_for_upload_port=false
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nano_nora.serial.disableDTR=false
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nano_nora.serial.disableRTS=false
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nano_nora.build.tarch=xtensa
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nano_nora.build.bootloader_addr=0x0
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nano_nora.build.target=esp32s3
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nano_nora.build.mcu=esp32s3
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nano_nora.build.core=esp32
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nano_nora.build.variant=arduino_nano_nora
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nano_nora.build.board=ARDUINO_NANO_NORA
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nano_nora.build.code_debug=0
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nano_nora.build.usb_mode=0
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nano_nora.build.cdc_on_boot=1
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nano_nora.build.msc_on_boot=0
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nano_nora.build.dfu_on_boot=1
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nano_nora.build.f_cpu=240000000L
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nano_nora.build.flash_size=16MB
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nano_nora.build.flash_freq=80m
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nano_nora.build.flash_mode=dio
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nano_nora.build.boot=qio
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nano_nora.build.boot_freq=80m
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nano_nora.build.partitions=app3M_fat9M_fact512k_16MB
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nano_nora.build.defines=-DBOARD_HAS_PSRAM
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nano_nora.build.loop_core=-DARDUINO_RUNNING_CORE=1
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nano_nora.build.event_core=-DARDUINO_EVENT_RUNNING_CORE=1
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nano_nora.build.psram_type=opi
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nano_nora.build.memory_type={build.boot}_{build.psram_type}
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nano_nora.tools.esptool_py.program.pattern_args=--chip {build.mcu} --port "{serial.port}" --before default_reset --after hard_reset write_flash -z --flash_mode {build.flash_mode} --flash_freq {build.flash_freq} --flash_size {build.flash_size} {build.bootloader_addr} "{build.path}/{build.project_name}.bootloader.bin" 0x8000 "{build.path}/{build.project_name}.partitions.bin" 0xe000 "{runtime.platform.path}/tools/partitions/boot_app0.bin" 0xf70000 "{build.variant.path}/extra/nora_recovery/nora_recovery.ino.bin" 0x10000 "{build.path}/{build.project_name}.bin"
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##############################################################

‎package/package_esp32_index.template.json

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Original file line numberDiff line numberDiff line change
@@ -33,6 +33,9 @@
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},
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{
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"name": "ESP32-C3 Dev Board"
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},
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{
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"name": "Arduino Nano ESP32"
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}
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],
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"toolsDependencies": [
@@ -85,6 +88,11 @@
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"packager": "esp32",
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"name": "mklittlefs",
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"version": "3.0.0-gnu12-dc7f933"
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},
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{
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"packager": "arduino",
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"name": "dfu-util",
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"version": "0.11.0-arduino5"
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}
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]
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}
@@ -683,6 +691,66 @@
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]
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}
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]
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},
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{
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"name": "arduino",
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"maintainer": "Arduino",
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"websiteURL": "http://www.arduino.cc/",
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"email": "[email protected]",
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"help": {
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"online": "http://www.arduino.cc/en/Reference/HomePage"
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},
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"platforms": [],
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"tools": [
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{
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"name": "dfu-util",
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"version": "0.11.0-arduino5",
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"systems": [
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{
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"host": "i386-apple-darwin",
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"url": "http://downloads.arduino.cc/tools/dfu-util-0.11-arduino5-darwin_amd64.tar.gz",
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"archiveFileName": "dfu-util-0.11-arduino5-darwin_amd64.tar.gz",
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"size": "72429",
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"checksum": "SHA-256:9e576c6e44f54b1e921a43ea77bcc08ec99e0e4e0905f4b9acf9ab2c979f0a22"
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},
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{
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"host": "arm-linux-gnueabihf",
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"url": "http://downloads.arduino.cc/tools/dfu-util-0.11-arduino5-linux_arm.tar.gz",
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"archiveFileName": "dfu-util-0.11-arduino5-linux_arm.tar.gz",
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"size": "2512819",
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"checksum": "SHA-256:acd4bd283fd408515279a44dd830499ad37b0767e8f2fde5c27e878ded909dc3"
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},
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{
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"host": "aarch64-linux-gnu",
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"url": "http://downloads.arduino.cc/tools/dfu-util-0.11-arduino5-linux_arm64.tar.gz",
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"archiveFileName": "dfu-util-0.11-arduino5-linux_arm64.tar.gz",
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"size": "2607592",
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"checksum": "SHA-256:b3f46a65da0c2fed2449dc5a3351c3c74953a868aa7f8d99ba2bb8c418344fe9"
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},
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{
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"host": "x86_64-linux-gnu",
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"url": "http://downloads.arduino.cc/tools/dfu-util-0.11-arduino5-linux_amd64.tar.gz",
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"archiveFileName": "dfu-util-0.11-arduino5-linux_amd64.tar.gz",
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"size": "2283425",
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"checksum": "SHA-256:96c64c278561af806b585c123c85748926ad02b1aedc07e5578ca9bee2be0d2a"
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},
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{
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"host": "i686-linux-gnu",
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"url": "http://downloads.arduino.cc/tools/dfu-util-0.11-arduino5-linux_386.tar.gz",
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"archiveFileName": "dfu-util-0.11-arduino5-linux_386.tar.gz",
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"size": "2524406",
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"checksum": "SHA-256:9a707692261e5710ed79a6d8a4031ffd0bfe1e585216569934346e9b2d68d0c2"
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},
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{
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"host": "i686-mingw32",
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"url": "http://downloads.arduino.cc/tools/dfu-util-0.11-arduino5-windows_386.tar.gz",
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"archiveFileName": "dfu-util-0.11-arduino5-windows_386.tar.gz",
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"size": "571340",
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"checksum": "SHA-256:6451e16bf77600fe2436c8708ab4b75077c49997cf8bedf03221d9d6726bb641"
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}
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]
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}
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]
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}
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]
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}

‎platform.txt

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@@ -239,6 +239,7 @@ recipe.size.regex.data=^(?:\.dram0\.data|\.dram0\.bss|\.noinit)\s+([0-9]+).*
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## ---------------------------------
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pluggable_discovery.required.0=builtin:serial-discovery
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pluggable_discovery.required.1=builtin:mdns-discovery
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pluggable_discovery.required.2=builtin:dfu-discovery
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pluggable_monitor.required.serial=builtin:serial-monitor
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## ------------------
@@ -305,3 +306,11 @@ tools.esp_ota.upload.protocol=network
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tools.esp_ota.upload.field.password=Password
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tools.esp_ota.upload.field.password.secret=true
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tools.esp_ota.upload.pattern={cmd} -i {upload.port.address} -p {upload.port.properties.port} --auth={upload.field.password} -f "{build.path}/{build.project_name}.bin"
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## Upload Sketch Through DFU OTA
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## -------------------------------------------
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tools.dfu-util.path={runtime.tools.dfu-util-0.11.0-arduino5.path}
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tools.dfu-util.cmd=dfu-util
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tools.dfu-util.upload.params.verbose=-d
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tools.dfu-util.upload.params.quiet=
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tools.dfu-util.upload.pattern="{path}/{cmd}" --device {vid.0}:{pid.0} -D "{build.path}/{build.project_name}.bin" -Q

‎tools/partitions/app3M_fat9M_fact512k_16MB.csv

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# Name, Type, SubType, Offset, Size, Flags
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nvs, data, nvs, 0x9000, 0x5000,
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otadata, data, ota, 0xe000, 0x2000,
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app0, app, ota_0, 0x10000, 0x300000,
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app1, app, ota_1, 0x310000, 0x300000,
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ffat, data, fat, 0x610000, 0x960000,
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factory, app, factory, 0xF70000, 0x80000,
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coredump, data, coredump, 0xFF0000, 0x10000,
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# to create/use ffat, see https://github.com/marcmerlin/esp32_fatfsimage

‎variants/arduino_nano_nora/extra/nora_recovery/README.md

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# Arduino Nano Nora Recovery Sketch
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This sketch implements the DFU recovery mode logic, called by all sketches
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when a double tap on the RESET button is detected. It should not be uploaded
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as any other sketch; instead, this should be compiled and then flashed in
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the module's `factory` partition.
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## Compilation
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The binary can be compiled with the Arduino 2.x IDE or CLI using the
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`nano_nora` variant. In particular, using the CLI the resulting binary
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can be exported to the `build` directory with the `-e` switch to
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`arduino-cli compile`.
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## Automatic installation
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By replacing the binary in the current folder, automatic installation
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can be performed by running the "Upload with Programmer" action on any
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sketch in the Arduino 2.x IDE or CLI. In particular, using the CLI the
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binary can be installed via the command:
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```
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arduino-cli compile -u --programmer esptool
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```
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## Manual installation
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Once compiled, the binary can also be installed on a board using `esptool.py`
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with the following command:
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```
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esptool.py --chip esp32s3 --port "/dev/ttyACM0" --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 16MB 0xF70000 "nora_recovery.ino.bin"
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```
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where:
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- `esptool.py` is located in your core's install path under `tools/esptool_py`;
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- `/dev/ttyACM0` is the serial port exposed by the board to be used;
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- `0xF70000` is the factory partition address (make sure it matches the
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offset in the variant's `{build.partitions}` file);
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- `nora_recovery.ino.bin` is the compiled sketch image.
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Due to a BSP issue, the first call to `esptool.py` will enter the hardware
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bootloader for programming, but fail with an "Input/output error". This is
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a known issue; calling the program again with the same arguments will now
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work correctly.
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Once flashing is complete, a power cycle (or RESET button tap) is required
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to leave the `esptool.py` flashing mode and load user sketches.

‎variants/arduino_nano_nora/extra/nora_recovery/nora_recovery.ino

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#define USB_TIMEOUT_MS 15000
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#define POLL_DELAY_MS 60
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#define FADESTEP 8
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void pulse_led() {
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static u32_t pulse_width = 0;
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static u8_t dir = 0;
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if (dir) {
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pulse_width -= FADESTEP;
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if (pulse_width < FADESTEP) {
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dir = 0U;
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pulse_width = FADESTEP;
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}
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} else {
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pulse_width += FADESTEP;
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if (pulse_width > 255) {
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dir = 1U;
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pulse_width = 255;
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}
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}
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analogWrite(LED_GREEN, pulse_width);
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}
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#include <esp_ota_ops.h>
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#include <esp_partition.h>
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#include <esp_flash_partitions.h>
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#include <esp_image_format.h>
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bool load_previous_firmware() {
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// if user flashed this recovery sketch to an OTA partition, stay here
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extern bool _recovery_active;
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if (!_recovery_active)
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return false;
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// booting from factory partition, look for a valid OTA image
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esp_partition_iterator_t it = esp_partition_find(ESP_PARTITION_TYPE_APP, ESP_PARTITION_SUBTYPE_ANY, NULL);
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for (; it != NULL; it = esp_partition_next(it)) {
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const esp_partition_t *part = esp_partition_get(it);
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if (part->subtype != ESP_PARTITION_SUBTYPE_APP_FACTORY) {
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esp_partition_pos_t candidate = { part->address, part->size };
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esp_image_metadata_t meta;
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if (esp_image_verify(ESP_IMAGE_VERIFY_SILENT, &candidate, &meta) == ESP_OK) {
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// found, use it
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esp_ota_set_boot_partition(part);
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return true;
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}
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}
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}
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return false;
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}
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void setup() {
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extern bool _recovery_marker_found;
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if (!_recovery_marker_found) {
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// marker not found, probable cold start
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// try starting previous firmware immediately
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if (load_previous_firmware())
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esp_restart();
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}
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printf("Recovery firmware started, waiting for USB\r\n");
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}
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void loop() {
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static int elapsed_ms = 0;
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pulse_led();
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delay(POLL_DELAY_MS);
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if (USB) {
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// wait indefinitely for DFU to complete
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elapsed_ms = 0;
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} else {
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// wait for USB connection
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elapsed_ms += POLL_DELAY_MS;
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}
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if (elapsed_ms > USB_TIMEOUT_MS) {
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elapsed_ms = 0;
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// timed out, try loading previous firmware
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if (load_previous_firmware()) {
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// found a valid FW image, load it
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analogWrite(LED_GREEN, 255);
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printf("Leaving recovery firmware\r\n");
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delay(200);
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esp_restart(); // does not return
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}
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}
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}

‎variants/arduino_nano_nora/pins_arduino.h

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#ifndef Pins_Arduino_h
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#define Pins_Arduino_h
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#include <stdint.h>
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#include "soc/soc_caps.h"
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#define USB_VID 0x2341
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#define USB_PID 0x0070
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#define EXTERNAL_NUM_INTERRUPTS 46
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#define NUM_DIGITAL_PINS 48
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#define NUM_ANALOG_INPUTS 20
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#define analogInputToDigitalPin(p) (((p)<20)?(analogChannelToDigitalPin(p)):-1)
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#define digitalPinToInterrupt(p) (((p)<48)?(p):-1)
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#define digitalPinHasPWM(p) (p < 46)
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static const uint8_t TX = 43;
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static const uint8_t RX = 44;
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static const uint8_t RTS = 45;
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static const uint8_t CTS = 6;
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static const uint8_t DTR = 1;
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static const uint8_t DSR = 7;
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static const uint8_t LED_RED = 46;
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static const uint8_t LED_GREEN = 0;
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static const uint8_t LED_BLUE = 45;
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static const uint8_t LED_BUILTIN = 48;
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#define LED_BUILTIN LED_BUILTIN
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static const uint8_t SS = 21;
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static const uint8_t MOSI = 38;
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static const uint8_t MISO = 47;
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static const uint8_t SCK = 48;
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static const uint8_t A0 = 1;
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static const uint8_t A1 = 2;
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static const uint8_t A2 = 3;
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static const uint8_t A3 = 4;
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static const uint8_t A4 = 11;
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static const uint8_t A5 = 12;
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static const uint8_t A6 = 13;
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static const uint8_t A7 = 14;
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static const uint8_t D0 = 44; // RX0
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static const uint8_t D1 = 43; // TX0
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static const uint8_t D2 = 5;
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static const uint8_t D3 = 6;
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static const uint8_t D4 = 7;
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static const uint8_t D5 = 8;
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static const uint8_t D6 = 9;
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static const uint8_t D7 = 10;
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static const uint8_t D8 = 17;
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static const uint8_t D9 = 18;
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static const uint8_t D10 = 21; // SS
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static const uint8_t D11 = 38; // MOSI
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static const uint8_t D12 = 47; // MISO
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static const uint8_t D13 = 48; // SCK
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static const uint8_t SDA = 11;
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static const uint8_t SCL = 12;
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#endif /* Pins_Arduino_h */

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