U2C_RESULT U2C_SetI2cFreq (
HANDLE hDevice,
BYTE Frequency
);
The U2C_SetI2cFreq function configures I2C bus frequency.
- Parameters:
-
| hDevice | Handle to the U2C-12 device. |
| Frequency | The frequency of I2C bus, where:
- 0 corresponds to I2C bus fast mode (400 kHz).
- 1 corresponds to I2C bus standard mode (100 kHz).
- 1+n corresponds to clock period of I2C bus equal to 10 + 2*n uS.
For convenience following constants were introduced:
| U2C_I2C_FREQ_FAST | I2C bus fast mode (400 kHz) |
| U2C_I2C_FREQ_STD | I2C bus standard mode (100 kHz) |
| U2C_I2C_FREQ_83KHZ | 83 kHz |
| U2C_I2C_FREQ_71KHZ | 71 kHz |
| U2C_I2C_FREQ_62KHZ | 62 kHz |
| U2C_I2C_FREQ_50KHZ | 50 kHz |
| U2C_I2C_FREQ_25KHZ | 25 kHz |
| U2C_I2C_FREQ_10KHZ | 10 kHz |
| U2C_I2C_FREQ_5KHZ | 5 kHz |
| U2C_I2C_FREQ_2KHZ | 2 kHz |
|
- Return values:
-
| U2C_SUCCESS | The I2C bus frequency value was successfully set. |
| U2C_HARDWARE_NOT_FOUND | U2C-12 device referenced by hDevice handle was not found. |
|
