54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
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import i2c from 'i2c-bus'
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import pify from 'pify'
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export default class Bus {
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constructor(busnum=1) {
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this.busnum = busnum
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this.bus = i2c.open(this.busnum, () => {})
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}
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// see https://github.com/fivdi/i2c-bus#busi2cfuncscb for list of functions that can be promisified
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scan() { return pify(this.bus.scan).bind(this.bus)() }
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close() { return pify(this.bus.close).bind(this.bus)() }
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readRaw(address, length, buffer) {
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return pify(this.bus.i2cRead).bind(this.bus)(address, length, buffer)
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}
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writeRaw(address, length, buffer) {
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return pify(this.bus.i2cWrite).bind(this.bus)(address, length, buffer)
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}
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read(address, cmd) {
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// console.log('read: address, cmd', address, cmd)
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return pify(this.bus.readByte).bind(this.bus)(address, cmd)
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}
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write(address, cmd, byte) {
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// console.log('write: address, cmd, byte', address, cmd, byte)
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return pify(this.bus.writeByte.bind(this.bus))(address, cmd, byte)
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}
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read2(address, cmd) {
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return pify(this.bus.readWord.bind(this.bus))(address, cmd)
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}
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write2(address, cmd, bytes) {
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return pify(this.bus.writeWord.bind(this.bus))(address, cmd, bytes)
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}
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receive(address) {
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// console.log('receivebyte', address)
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return pify(this.bus.receiveByte.bind(this.bus))(address)
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}
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send(address, byte) {
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// console.log('sendbyte', address,byte)
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return pify(this.bus.sendByte.bind(this.bus))(address, byte)
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}
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} // end of Bus Class
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