mirror of
https://github.com/ocogeclub/ocoge.git
synced 2024-11-22 15:49:48 +00:00
44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
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'use strict';
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const err_msg = 'AMG8833 is already opened. Please close old connection to use new one.';
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let rg;
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let i2c_hand = -1;
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exports.init = async (_rg, i2c_bus, i2c_addr, wael = null) => {
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rg = _rg;
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if (i2c_hand >= 0) { throw new Error(err_msg); return; }
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i2c_hand = await rg.i2c_open(i2c_bus, i2c_addr, 0);
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console.log('i2c_hand=' + i2c_hand);
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await rg.i2c_write_byte_data(i2c_hand, 0x00, 0x00); //Normal mode
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await rg.i2c_write_byte_data(i2c_hand, 0x02, 0x00); //10FPS
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}
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exports.read_thermistor = async () => {
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let temp = await rg.i2c_read_word_data(i2c_hand, 0x0e);
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return temp * 0.0625;
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}
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exports.read_temp_array = async () => {
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let linedata = [];
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for (let i = 0; i < 8; i++) {
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let data = await rg.i2c_read_i2c_block_data(i2c_hand, 0x80 + 0x10 * i, 16);
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let oneline = [];
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for (let j = 0; j < 8; j++) {
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oneline.push(((data[2 * j + 1] & 0x07) * 256 + data[2 * j]) * 0.25);
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}
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linedata.push(oneline);
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}
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return linedata;
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}
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exports.stop = async () => {
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if (i2c_hand >= 0) {
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await rg.i2c_close(i2c_hand);
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i2c_hand = -1;
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}
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}
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/*
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* This code was ported from https://www.denshi.club/pc/raspi/5raspberry-pi-zeroiot381i2c-amg8833.html
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*/
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