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I2C functions are only supported by the following PCB versions: •uEye LE USB 3.1 Gen 1 •USB 3 uEye LE •USB uEye LE •GigE uEye LE |
Class
Accessible
Camera.I2C.Write
Syntax
uEye.I2C.Write(int s32DeviceAddr, int s32RegisterAddr, byte[] byData)
Description
Writes data via the I2C bus of a board level camera.
The uEye camera processes I2C addresses in a 7-bit format that is created from the 8-bit format by a bit shift to the right. The eighth bit indicates whether an address is a read (1) or write (0) address. For example, the 7-bit address 0x48 is the write address 0x90 and the read address 0x91 in 8-bit format.
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The following addresses for nDeviceAddr are assigned to the uEye camera and must not be used: 7-bit format: 0x10, 0x48, 0x4C, 0x50, 0x51, 0x52, 0x55, 0x5C, 0x5D, 0x69, 0x77 8-bit format: 0x20, 0x90, 0x98, 0xA0, 0xA2, 0xA4, 0xAA, 0xB8, 0xBA, 0xD2, 0xEE For UI-336x/UI-536x and UI-337x/UI-537x: 0x82 |
For information on the signals applied to the I2C bus, refer to the uEye manual.
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If you write data on a micro controller via the uEye camera, make sure that the micro controller confirms the transfer with an ACK message. |
Parameter
s32DeviceAddr |
Device address (8 bit format) |
s32DeviceAddr | uEye.Defines.I2C.DontWait |
By default, it is polled when the byte is actually written to the storage cell. If uEye.Defines.I2C.DontWait is used with "OR" in combination with s32DeviceAddr there will be no polling. |
s32RegisterAddr |
Address of a 8 bit register (only 8-bit addresses are valid) |
s32RegisterAddr | uEye.Defines.I2C.BitRegister16 |
Address of a 16 bit register |
s32RegisterAddr | uEye.Defines.I2C.BitRegister0 |
If only a device address but no register address exists. |
byData |
Data to be written |
Example
byte[] data = { 0x01, 0x02 };
int address = 0x4b;
int register = 0x02;
camera.I2C.Write(address, register | (int)uEye.Defines.I2C.BitRegister16, data);
