https://github.com/QuirkyCort/micropython-gy33

UART and I2C driver for GY33 module
https://github.com/QuirkyCort/micropython-gy33

Last synced: 3 months ago
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UART and I2C driver for GY33 module

• Host: GitHub
• URL: https://github.com/QuirkyCort/micropython-gy33
• Owner: QuirkyCort
• License: gpl-3.0
• Created: 2023-08-27T10:52:27.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-12-24T08:58:48.000Z (11 months ago)
• Last Synced: 2024-05-13T03:33:30.749Z (6 months ago)
• Language: Python
• Size: 31.3 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-micropython - micropython-gy33 - UART and I2C drivers for GY-33 module (TCS3472 color sensor). (Libraries / Sensors)

README

        
# Micropython GY-33 Driver

The GY-33 module uses a TCS3472 sensor, but does not expose the TCS3472 by default.

Instead, it contains a STM32F030F4 micro-controller which provides UART and I2C interface for the TCS3472 and the onboard LED.

A driver written for the TCS3472 will not normally work with this module, as the onboard micro-controller uses a different I2C address and registers.

I couldn't find any english documentation for the GY-33, so the below info are extracted from the chinese documentation found here https://pan.baidu.com/s/1kVq51dl

# Pinout

| Pin | Label | Description |

| --- | --- | --- |

| 1 | VCC | Power supply. 3v to 5v |

| 2 | CT | UART TX or I2C SCL |

| 3 | DR | UART RX or I2C SDA |

| 4 | GND | Ground |

| 5 | NC | Reserved, do not connect |

| 6 | INT | Interrupt for the TCS3472 (S1 must be grounded) |

| 7 | SDA | SDA for the TCS3472 (S1 must be grounded) |

| 8 | SCL | SCL for the TCS3472 (S1 must be grounded) |

| A | SO | Selection for UART / I2C mode |

| B | S1 | Disable MCU, enable TCS3472 when grounded |

## Pin S0

When grounded, the micro-controller will be I2C mode via pins 2 and 3 (CT and DR).

When unconnected or high, the micro-controller will be in UART mode via pins 2 and 3 (CT and DR).

## Pin S1

When grounded, the built-in micro-controller will be disabled, and you will be able to access the TCS3472 via pins 7 and 8 (SDA and SCL).

When unconnected or high, the TCS3472 will not be directly accessible, and pins 7 and 8 (SDA and SCL) should not be connected.

## UART and I2C mode

See their respective folders for more details.