mlx90621-spin
This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for Melexis's MLX90621 16x4 IR sensing array
IMPORTANT: This software is meant to be used with the spin-standard-library (P8X32A) or p2-spin-standard-library (P2X8C4M64P). Please install the applicable library first before attempting to use this code, otherwise you will be missing several files required to build the project.
Videos
Salient Features
- I2C connection at up to 1MHz (P2/SPIN2: TBD)
- Single Pixel, Line, Column or whole frame retrieval to buffer
- Continuous or step measure mode
- Set sensor ADC resolution (15..18 bits)
- Set sensor framerate (0.5..512Hz)
Requirements
P1/SPIN1:
- spin-standard-library
- P1/SPIN1: 1 extra core/cog for the PASM I2C engine
P2/SPIN2:
Compiler Compatibility
| Processor |
Language |
Compiler |
Backend |
Status |
| P1 |
SPIN1 |
FlexSpin (6.9.4) |
Bytecode |
OK |
| P1 |
SPIN1 |
FlexSpin (6.9.4) |
Native/PASM |
OK |
| P2 |
SPIN2 |
FlexSpin (6.9.4) |
NuCode |
Build OK |
| P2 |
SPIN2 |
FlexSpin (6.9.4) |
Native/PASM2 |
OK |
Limitations
- Very early in development - may malfunction, or outright fail to build
- The sensor has a built-in EEPROM, which unfortunately has the same (fixed) slave address as the EEPROM on most any Propeller 1-based board, so the sensor must be connected to pins other than the "standard" Propeller I2C pins 28 & 29, or the Propeller must be booted by some method other than EEPROM (doesn't apply to P2)
- No correction is performed on the sensor data (i.e., Ta and To; ambient temperature and object temperature). Only the raw image data is collected and returned