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circuitpython-org/_board/lolin_s2_pico.md
Jeff Epler 4715875cc4 Fix board dates to always be of the form YYYY-MM-DD 
.. leading zeros are required for `frontmatter` to treat them as dates
rather than strings, apparently per the YAML specification.

This was done by script:
```py
import re
import datetime
import pathlib
import sys

import frontmatter

rx = re.compile(r'^(\s*)date_added:.*$', re.M)

for path_str in sys.argv[1:]:
    print(path_str)
    path = pathlib.Path(path_str)

    post = frontmatter.load(path)
    date_added = post.get("date_added", "")

    if isinstance(date_added, datetime.date):
        continue

    if isinstance(date_added, str):
        try:
            date_added = datetime.datetime.strptime(date_added, "%Y-%m-%d")
        except ValueError as exc:
            print(f"Failed to parse date {date_added} in {path_str}: {exc}")
            continue

    date_added = date_added.date()
    content = path.read_text("utf-8")
    new_content = rx.sub(lambda m: f"{m.group(1)}date_added: {date_added}", content)
    assert content != new_content

    path.write_text(new_content, "utf-8")
```
2024-03-22 11:31:45 -05:00

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layout board_id title name manufacturer board_url board_image date_added family bootloader_id features
download lolin_s2_pico LOLIN S2 Pico Download LOLIN S2 Pico Wemos
https://www.wemos.cc/en/latest/s2/s2_pico.html
lolin_s2_pico.jpg 2021-11-02 esp32s2 lolin_s2_pico
Wi-Fi
USB-C
Display
Breadboard-Friendly

A development boards with an OLED and a small form factor.

Features

  • ESP32-S2FN4R2 WiFi SoC
    • Xtensa® single-core 32-bit LX7 microprocessor, up to 240 MHz
    • Integrated 802.11 b/g/n WiFi 2.4 GHz Transceiver, up to 150 Mbps
    • Integrated RISC-V ULP Coprocessor
    • Integrated Temperature Sensor (-20 °C to 110 °C)
    • Operating Voltage: 3.0 to 3.6 V (WiFi: 310 mA (peak), Modem sleep: 12-19 mA, Light sleep: 450 µA, Deep sleep: 20-190 µA)
    • 320 KB SRAM, 4 MB Flash (embedded), 2 MB PSRAM (embedded), 16 KB SRAM in RTC (accessable by main CPU, 8 KB accessable by ULP coprocessor), 4 Kbit eFuse (1792 bits reserved for user data)
    • 2 x 13-bit SAR ADCs, up to 20 channels (2 channels not available on ADC2 due to USB D+/D-)
    • 2 x 8-bit DAC, 14 x touch sensing IOs
    • 4 x SPI (2 usable due to embedded flash & PSRAM), 1 x I2S, 2 x I2C, 2 x UART
    • 1 x DVP 8/16 camera interface, implemented using the hardware resources of I2S
    • 1 x LCD interface SPI2 (8-bit serial RGB/8080/6800), 1 x LCD interface I2S (8/16/24-bit parallel)
    • 1 x TWAI® controller compatible with ISO 11898-1 (CAN Specification 2.0)
    • LED PWM controller, up to 8 channels
    • USB OTG 1.1 controller and PHY, with host and device support
    • Cryptographic Hardware Accelerators: AES, ECB/CBC/OFB/CFB/CTR, GCM, SHA, RSA, ECC (Digital Signature)
  • USB-C connector, for built-in ROM USB bootloader, serial port debugging, and USB device mode
  • 27 x GPIO pins, plus VBUS, 3V3, GND
    • 21 x pins broken out to breadboard-friendly headers
    • EN RESET button
    • GPIO0 BOOT button
    • GPIO10 LED (blue status LED)
    • Lolin I2C JST SH 4-pin port (does not match QWIIC/Stemma-Qt pinout) using GPIO8 (SDA) and GPIO9 (SCL)
    • 128 x 32 SSD1306 OLED display internally connected to the same I2C bus as the external port, reset pin connected to GPIO18, I2C address 0x3C (native support in CircuitPython started with firmware version 8.1.0-beta.0, otherwise user code initialization is required)
  • Compatible with CircuitPython, MicroPython (default firmware), Arduino and ESP-IDF

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