nanoESP32-S3

nanoESP32-S3 Introduce
Module Specifications
ESPLink
Demo
Product Link
Reference

nanoESP32-S3 Introduce

nanoESP32-S3 is ESP32-S3 dev board made by MuseLab, base on ESP32-S3-WROOM-1-N8 manufactured by Expressif, with on-board usb-to-serial, TYPE-C, RGB LED, the on-board programmer ESPLink (based on DAPLink) support usb-to-serial (compatible with traditional use), drag-n-drop program, and jtag debug, made it convenient for development and test.

Module Specifications

nanoESP32-S3 use the ESP32-S3-WROOM-1-N8 module manufactured by Expressif, here are key features

Component	Detail
MCU	32bit Xtensa LX7 dual core up to 240MHz
ROM	384KB
SRAM	512KB
Flash	8MB
WiFi	IEEE 802.11bgn
Bluetooth	BLE 5.0 & mesh
GPIO	45
SPI	4
UART	3
I2C	2
I2S	2
RMT	1T+1R
DMA	3T+3R
LED-PWMC	8 channel
TWAI	1
ADC	2 x 12bit, 20 channel
Temp sensor	1
Touch sensor	14
Timer	8
USB-OTG	1
LCD	1
DVP	1 8-16bit
Security	OTP/AES/SHA/RSA/RNG/HMAC

ESPLink

nanoESP32-S3 has an on-board programmer called ESPLink, which has some useful features, here are the detailed explanation

USB-to-Serial

compatible with the traditional use, can used to program with esptool.py or monitor the serial output message. examples for reference:

$idf.py -p /dev/ttyACM0 flash monitor
$esptool.py --chip esp32s3 \
           -p /dev/ttyACM0 \
           -b 115200 \
           --before=default_reset \
           --after=hard_reset \
           --no-stub \
           write_flash \
           --flash_mode dio \
           --flash_freq 80m \
           --flash_size 2MB \
           0x0     esp32s3/bootloader.bin \
           0x8000  esp32s3/partition-table.bin \
           0x10000 esp32s3/blink_100.bin

Drag-and-Drop Program

the ESPLink support drag-n-drop program, after power on the board, a virtual USB Disk named ESPLink will appear, just drag the flash image into the ESPLink, wait for some seconds, then the ESPLink will automatically complete the program work. it's very convenient since it's no need to rely on external tools and work well on any platform (Win/Linux/Mac .etc), some typical usage scenarios: quickly verification, compile on cloud server and program on any PC, firmware upgrade when used on commercial products .etc
note: the flash image is a splicing of three files (bootloader.bin/partition-table.bin/app.bin), just expand the bootloader.bin to size 0x8000, expand the partition-table.bin to size 0x10000, and concatenate these three files, use the script esppad.sh under tools directory to make it, example for reference:

$./tools/esppad.sh bootloader.bin partition-table.bin app.bin flash_image.bin
$cp flash_image.bin /media/pi/ESPLink/

JTAG Debug

ESPLink support jtag interface to debug the ESP32-S3, it's useful for product developer to fix the bug when system crash, here are the instructions

Openocd Install

$git clone https://github.com/espressif/openocd-esp32.git
$cd openocd-esp32
$./bootstrap
$./configure --enable-cmsis-dap
$make -j
$sudo make install

Burn the efuse

the efuse STRAP_JTAG_SEL should be burned to enable the jtag function.

$espefuse.py -p /dev/ttyACM0 burn_efuse STRAP_JTAG_SEL

Attach to ESP32-S3

set GPIO3 to 0 for choose the GPIO function to JTAG, then power on the board and execute the attach script

$cd openocd-esp32
$sudo ./src/openocd -s ${PWD}/tcl -f tcl/interface/cmsis-dap.cfg -f tcl/target/esp32s3.cfg
Open On-Chip Debugger  v0.10.0-esp32-20210902-1-gca6a6332-dirty (2021-10-07-14:45)
Licensed under GNU GPL v2
For bug reports, read
        http://openocd.org/doc/doxygen/bugs.html
adapter speed: 10000 kHz

WARNING: ESP flash support is disabled!
WARNING: ESP flash support is disabled!
force hard breakpoints
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : CMSIS-DAP: SWD  Supported
Info : CMSIS-DAP: JTAG Supported
Info : CMSIS-DAP: FW Version = 0255
Info : CMSIS-DAP: Serial# = 0800000100440064430000014e504332a5a5a5a597969908
Info : CMSIS-DAP: Interface Initialised (JTAG)
Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 1 TDO = 1 nTRST = 0 nRESET = 1
Info : CMSIS-DAP: Interface ready
Info : High speed (adapter_khz 10000) may be limited by adapter firmware.
Info : clock speed 10000 kHz
Info : cmsis-dap JTAG TLR_RESET
Info : cmsis-dap JTAG TLR_RESET
Info : JTAG tap: esp32s3.cpu0 tap/device found: 0x120034e5 (mfg: 0x272 (Tensilica), part: 0x2003, ver: 0x1)
Info : JTAG tap: esp32s3.cpu1 tap/device found: 0x120034e5 (mfg: 0x272 (Tensilica), part: 0x2003, ver: 0x1)
Info : esp32s3.cpu0: Debug controller was reset.
Info : esp32s3.cpu0: Core was reset.
Info : esp32s3.cpu1: Debug controller was reset.
Info : esp32s3.cpu1: Core was reset.
Info : Listening on port 3333 for gdb connections

Debug

when attach success, open another ternimal to debug, you can use gdb or telnet, explained separately as follows

Debug with Gdb

$xtensa-esp32s3-elf-gdb -ex 'target remote 127.0.0.1:3333' ./build/blink.elf
(gdb) info reg
(gdb) s
(gdb) continue

Debug with telnet

$telnet localhost 4444
>reset
>halt
>reg
>step
>reg pc
>resume

Demo

The preset factory test firmware is located in the demo directory. expected that the RGB LED should start to flash after power-on, how to compile the source code show here for reference

$git clone https://github.com/espressif/esp-idf.git
$cd esp-idf && ./install.sh && . ./export.sh
$cd examples/get-started/blink/
$idf.py set-target esp32s3
$idf.py -p /dev/ttyACM0 flash monitor

Product Link

nanoESP32-S3 Board

Reference

fabriziotappero / nanoESP32-S3