Jeff Epler
4715875cc4
.. 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")
```
38 lines
2.3 KiB
Markdown
38 lines
2.3 KiB
Markdown
---
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layout: download
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board_id: "bpi_bit_s2"
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title: "BPI-Bit-S2 Download"
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name: "BPI-Bit-S2"
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manufacturer: "Banana Pi"
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board_url:
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- "https://wiki.banana-pi.org/BPI-Bit-S2"
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board_image: "bpi_bit_s2.jpg"
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date_added: 2022-09-14
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family: esp32s2
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bootloader_id: bpi_bit_s2
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features:
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- USB-C
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- Wi-Fi
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- Solder-Free Alligator Clip
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- Speaker
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---
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The BPI-Bit-S2 is a development board equipped ESP32-S2 chip, with 5x5 RGB LED matrix, 1 buzzer, 2 photosensitive sensors, 1 thermosensitive sensor, provides Wi-Fi functions via PCB antenna.
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And, the board uses the same edge connector as the micro:bit or micro:bit v2, which makes it possible to connect the alligator clip, or the breakout boards in most micro:bit kits.
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**Features:**
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- **ESP32-S2N4R2**: Xtensa® single-core 32-bit LX7 microprocessor,
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up to 240 MHz; 2.4G Wi-Fi; RISC-V Ultra Low Power Co-processor; **2 MB PSRAM** and **4MB FLASH** are integrated in the package, so don't worry too much about using massive buffers, it's basically sufficient.
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- **Native USB Port**: ESP32-S2 full-speed USB OTG interface, using Type-C USB Connector with back-feed protection. The interface is used for power supply to the board, download firmware or programs to the chip.
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- **5x5 RGB LED matrix**: 25 WS2812 Lamp beads, addressable, driven by GPIO18.
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- **GPIO0 LED**: It lights up by default and acts as a power indicator, controlled by GPIO0.
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- **Buzzer**: 8.5mm buzzer, controlled by GPIO17.
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- **Photosensitive Sensors**: On the upper front of the board, there is one on each side, read their analog values through GPIO12 and GPIO13.
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- **Thermosensitive Sensor**: Directly above pin 2, read its analog values through GPIO14.
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- **A/B Button**: A controlled by GPIO38, B controlled by GPIO33.
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- **Reset Button**
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- **Boot Button**: It is a button that controls boot mode only at startup, and can be used as a normal button at other times. Holding down **Boot** and then pressing **Reset** initiates Firmware Download mode for downloading firmware through the USB port;If UF2 Bootloader already exists, press **Reset** once and press **Boot** once within a second to enter the bootloader.
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- **5V to 3.3V DC/DC**: Maximum theoretical output 2A 3.3V.
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- **Edge Connector**: Same as the micro:bit, support for alligator clips or the breakout boards in most most micro:bit kits.
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