53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
const Bus = require('@uci/i2c').Bus,
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MCP = require('../src/mcp23008-17'),
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// use this require when using your own code
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// MCP = require('@uci/mcp')
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pause = require('@uci/utils').pPause
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let bus = new Bus()
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let ADDR = 0x27
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let CHIP = 'MCP23017'
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let MS = 300 // so humans can watch the light otherwise set to zero
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let PORT = 'B'
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let mcp = new MCP[CHIP](bus, ADDR);
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(async function () {
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await mcp.init()
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await mcp.allOff(PORT) // start clean
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console.log('all pins off')
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await pause(MS)
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let pins = [1, 7, 8]
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await mcp.pinsOn(pins, PORT, 'PLC')
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let result = await mcp.readPort(PORT, { format: 'PLC' })
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console.log(`${pins} on = current state: ${result.sort()}`)
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await pause(MS)
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pins = [2, 1, 6]
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await mcp.toggle(pins, PORT, 'PLC')
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result = await mcp.readPort(PORT, { format: 'PLC' })
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console.log(`${pins} toggle = current state: ${result.sort()}`)
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await pause(MS)
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pins = [2, 1, 7]
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await mcp.pinsOff(pins, PORT, 'PLC')
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result = await mcp.readPort(PORT, { format: 'PLC' })
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console.log(`${pins} off = current state: ${result.sort()}`)
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await pause(MS)
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let pin = 7
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result = await mcp.readPin(pin, PORT) ? 'on' : 'off'
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console.log(`Pin ${pin} is ${result}`)
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pin = 6
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result = await mcp.readPin(pin, PORT) ? 'on' : 'off'
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console.log(`Pin ${pin} is ${result}`)
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console.log('all pins off')
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await mcp.allOff(PORT) // clear port after each test
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})()
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