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Add PinMode func for MCP23017

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Add PinMode func for MCP23017
This commit is contained in:
th002 2016-09-07 17:13:42 +08:00 committed by GitHub
parent 7f153da14b
commit bc56a9cacd
1 changed files with 12 additions and 0 deletions
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12
platforms/i2c/mcp23017_driver.go
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@ -155,6 +155,18 @@ func (m *MCP23017Driver) WriteGPIO(pin uint8, val uint8, portStr string) (err er
return nil
}
// PinMode set pin mode
// val (0 output 1 input)
// port (A or B).
func (m *MCP23017Driver) PinMode(pin, val uint8, portStr string) (err error) {
selectedPort := m.getPort(portStr)
// Set IODIR register bit for given pin to an output/input.
if err = m.write(selectedPort.IODIR, uint8(pin), val); err != nil {
return
}
return
}
// ReadGPIO reads a value from a given gpio pin (0-7) and a
// port (A or B).
func (m *MCP23017Driver) ReadGPIO(pin uint8, portStr string) (val uint8, err error) {