U2C_RESULT U2C_GetI2cFreq (
HANDLE hDevice,
BYTE* pFrequency
);
The U2C_GetI2cFreq function obtains I2C bus frequency.
- Parameters:
-
| hDevice | Handle to the U2C-12 device. |
| pFrequency | A pointer to byte to be filled with current I2C bus frequency, 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 retrieved. |
| U2C_HARDWARE_NOT_FOUND | U2C-12 device referenced by hDevice handle was not found. |
|
