This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for MAX7219/21 LED display drivers.
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.
- SPI connection at 1MHz or ~25kHz (P1 PASM, bytecode SPI), up to 10MHz (P2)
- 7-segment (up to 8-digit) LED display
- Brightness control
- standard terminal I/O (putchar(), etc)
P1/SPIN1:
- spin-standard-library
terminal.common.spinh(provided by the spin-standard-library)
P2/SPIN2:
- p2-spin-standard-library
terminal.common.spin2h(provided by the p2-spin-standard-library)
| 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 | OK |
| P2 | SPIN2 | FlexSpin (6.9.4) | Native/PASM2 | OK |
(other versions or toolchains not listed are not supported, and may or may not work)
- Tested with 8-digit MAX7219-based displays
- Doesn't yet support dot-matrix displays
- Doesn't yet support chaining multiple displays
- BCD mode can be enabled, but isn't supported by the terminal I/O routines