Class MCP23S08

constructor

• new MCP23S08(): MCP23S08

• Returns MCP23S08

Readonly io0

Readonly io1

Readonly io2

Readonly io3

Readonly io4

Readonly io5

Readonly io6

Readonly io7

keys

params

readSlaveAddress

requiredKeys

writeSlaveAddress

Static MCP23S08_IO_DIRECTION

Static MCP23S08_REGISTER

flush

• flush(type?): void

• Parameters

  • type: "direction" | "gpio" = 'gpio'

  Returns void

flushWait

• flushWait(type?): Promise<void>

• Parameters

  • type: "direction" | "gpio" = 'gpio'

  Returns Promise<void>

initWait

• initWait(obniz): Promise<void>

• Initialize all ios. set direction=input.

  Parameters

  • obniz: Obniz

  Returns Promise<void>

inputWait

• inputWait(id): Promise<boolean>

• Read current all GPIO value and return single io value.

  Parameters

  • id: number

    io 0-7

  Returns Promise<boolean>

  GPIO value

output

• output(id, value): void

• set output value for io. It will apply immidiately. This function never change direction. set direction output before. If you want to hold some changes and flush once.

  use following examle steps
  this.io0.value = true;
  this.io1.value = true;
  this.flush("gpio");
  Copy

  Parameters

  • id: number

    io address. 0-7

  • value: boolean

    boolean. true or false

  Returns void

outputWait

• outputWait(id, value): Promise<void>

• async version of output();

  Parameters

  • id: number

  • value: boolean

  Returns Promise<void>

readAllGPIOWait

• readAllGPIOWait(): Promise<void>

• Read current all GPIO value.

  Returns Promise<void>

readWait

• readWait(address): Promise<number>

• Read byte from address

  Parameters

  • address: number

    internal register address

  Returns Promise<number>

  readed value of address

wired

• wired(obniz, spi): void

• Parameters

  • obniz: Obniz

  • spi: PeripheralSPI

  Returns void

write

• write(address, data): void

• Write byte to address without wait.

  Parameters

  • address: number

    internal register address

  • data: number

  Returns void

writeBulkWait

• writeBulkWait(address, data): Promise<void>

• Bulk write to addresses

  Parameters

  • address: number

    start address

  • data: number[]

  Returns Promise<void>

writeWait

• writeWait(address, data): Promise<void>

• Write byte to address. It will wait until success response receive

  Parameters

  • address: number

    internal register address

  • data: number

  Returns Promise<void>