This package is a quick and dirty assembler for the Texas Instruments LP5562. Package is primarily written so that an open-source toolchain can be provided for the LED controller used in the keyswitch.one project.
First install via npm:
npm install --save lp5562
Then include it in your project
// if using typescript or ES6 modules import {assemble} from 'lp5562' // or if using ES5 var assemble = require('lp5562').assemble;
Typescript definitions are included in the package. The function's signature is:
where program is the string representation of the assembly program, and the resulting Uint16Array is an array of 48 16-bit WORDs representing the memory map of LP5562's program space.
assemble(` .engine1 set_pwm 255 flash: ramp 200, -128 ramp 200, 128 branch 5, flash ramp 200, -128 ramp 200, -127 end, i `);
Produces:
Uint16Array[ 65344, 65283, 32515, 33186, 65283, 65027, 208, 0, 0, 0, ... 0 ]
All data is provided in big-endian format (as the LP5562 is an 8-bit device). Feed the Uint16Array#buffer to a Uint8Array or use a DataView if you need a different data representation.
For the assembly language spec, see the grammar. As a rule of thumb, all instructions that work on the official assembler provided with the evaluation module should work here as well. See §3.4.1 and §3.4.2 in the EVM docs for syntax and parameters.
This project is MIT Licensed. Pull requests welcome. Changes documented in CHANGELOG.md.