// I2cStart initializes i2c device for addresss
func (e *JouleAdaptor) I2cStart(address int) (err error) {
if e.i2cDevice != nil {
return
}
// TODO: handle the additional I2C buses
e.i2cDevice, err = sysfs.NewI2cDevice("/dev/i2c-0", address)
return
}
// I2cStart initializes i2c device for addresss
func (e *EdisonAdaptor) I2cStart(address int) (err error) {
if e.i2cDevice != nil {
return
}
if err = e.tristate.Write(sysfs.LOW); err != nil {
return
}
for _, i := range []int{14, 165, 212, 213} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return
}
if err = io.Direction(sysfs.IN); err != nil {
return
}
if err = io.Unexport(); err != nil {
return
}
}
for _, i := range []int{236, 237, 204, 205} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return
}
if err = io.Direction(sysfs.OUT); err != nil {
return
}
if err = io.Write(sysfs.LOW); err != nil {
return
}
if err = io.Unexport(); err != nil {
return
}
}
for _, i := range []string{"28", "27"} {
if err = changePinMode(i, "1"); err != nil {
return
}
}
if err = e.tristate.Write(sysfs.HIGH); err != nil {
return
}
e.i2cDevice, err = sysfs.NewI2cDevice("/dev/i2c-6", address)
return
}
// I2cStart starts a i2c device in specified address
func (r *RaspiAdaptor) I2cStart(address int) (err error) {
if r.i2cDevice == nil {
r.i2cDevice, err = sysfs.NewI2cDevice(r.i2cLocation, address)
}
return err
}
// I2cStart initializes i2c device for addresss
func (e *EdisonAdaptor) I2cStart(address int) (err error) {
if e.i2cDevice != nil {
return
}
// FIXME: the I2cDevice interface doesn,t support multiple buses,
// like the miniboard.. We select bus-6 by default here.
if e.miniboard {
for _, i := range []string{"20", "19"} /* bus-1 */ {
//for _, i := range []string{"28", "27"} /* bus-6 */ {
if err = changePinMode(i, "1"); err != nil {
return
}
}
e.i2cDevice, err = sysfs.NewI2cDevice("/dev/i2c-1", address)
} else {
if err = e.tristate.Write(sysfs.LOW); err != nil {
return
}
// Confiure IO18, IO19
// (ref: mraa's intel_edison_fab_c.c, func mraa_intel_edison_i2c_init_pre)
for _, i := range []int{14, 165, 212, 213} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return
}
if err = io.Direction(sysfs.IN); err != nil {
return
}
if err = io.Unexport(); err != nil {
return
}
}
// Continue on..
for _, i := range []int{236, 237, 204, 205} {
io := sysfs.NewDigitalPin(i)
if err = io.Export(); err != nil {
return
}
if err = io.Direction(sysfs.OUT); err != nil {
return
}
if err = io.Write(sysfs.LOW); err != nil {
return
}
if err = io.Unexport(); err != nil {
return
}
}
// Activate the I2c bus-6
for _, i := range []string{"28", "27"} {
if err = changePinMode(i, "1"); err != nil {
return
}
}
if err = e.tristate.Write(sysfs.HIGH); err != nil {
return
}
e.i2cDevice, err = sysfs.NewI2cDevice("/dev/i2c-6", address)
}
return
}
// I2cStart starts a i2c device in specified address on i2c bus /dev/i2c-1
func (b *BeagleboneAdaptor) I2cStart(address int) (err error) {
if b.i2cDevice == nil {
b.i2cDevice, err = sysfs.NewI2cDevice("/dev/i2c-1", address)
}
return
}
// I2cStart starts a i2c device in specified address on i2c bus /dev/i2c-1
func (b *BeagleboneAdaptor) I2cStart(address byte) (err error) {
b.i2cDevice, err = sysfs.NewI2cDevice("/dev/i2c-1", address)
return
}
// I2cStart starts an i2c device in specified address.
// This assumes that the bus used is /dev/i2c-1, which corresponds to
// pins labeled TWI1-SDA and TW1-SCK (pins 9 and 11 on header 13).
func (c *ChipAdaptor) I2cStart(address int) (err error) {
if c.i2cDevice == nil {
c.i2cDevice, err = sysfs.NewI2cDevice("/dev/i2c-1", address)
}
return err
}
// I2cStart starts a i2c device in specified address
func (r *RaspiAdaptor) I2cStart(address byte) (err error) {
r.i2cDevice, err = sysfs.NewI2cDevice(r.i2cLocation, address)
return err
}
