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Diffstat (limited to 'src/machine/i2c.go')
| -rw-r--r-- | src/machine/i2c.go | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/machine/i2c.go b/src/machine/i2c.go index 25d3180f6..977c9bad0 100644 --- a/src/machine/i2c.go +++ b/src/machine/i2c.go @@ -2,12 +2,27 @@ package machine +import ( + "errors" +) + // TWI_FREQ is the I2C bus speed. Normally either 100 kHz, or 400 kHz for high-speed bus. const ( TWI_FREQ_100KHZ = 100000 TWI_FREQ_400KHZ = 400000 ) +var ( + errI2CWriteTimeout = errors.New("I2C timeout during write") + errI2CReadTimeout = errors.New("I2C timeout during read") + errI2CBusReadyTimeout = errors.New("I2C timeout on bus ready") + errI2CSignalStartTimeout = errors.New("I2C timeout on signal start") + errI2CSignalReadTimeout = errors.New("I2C timeout on signal read") + errI2CSignalStopTimeout = errors.New("I2C timeout on signal stop") + errI2CAckExpected = errors.New("I2C error: expected ACK not NACK") + errI2CBusError = errors.New("I2C bus error") +) + // WriteRegister transmits first the register and then the data to the // peripheral device. // |