Changing SW I2C pins at runtime

[strud]

I am using U8g2 with a ST7567 in SW I2C mode

Constructor:

U8G2_ST7567_JLX12864_F_SW_I2C u8g2(U8G2_R2, SCL2, SDA2);

My question: is there a way without modifying the library to change the clock and data lines to other pins at run time?

I have a configurable system and 2x I2C buses so I would like the option of having the GUI put onto either of these buses.

[olikraus]

Yes, cou can assign new Arduino pin numbers:

u8g2.GetU8x8()->pins[U8X8_PIN_I2C_CLOCK] = <i2c  clock arduino pin number>
u8g2.GetU8x8()->pins[U8X8_PIN_I2C_DATA] = <i2c data arduino pin number>

Reference:

u8g2/csrc/u8x8.h

Lines 320 to 321 in bdb7896

	#define U8X8_PIN_I2C_CLOCK 12 /* 1 = Input/high impedance, 0 = drive low */
	#define U8X8_PIN_I2C_DATA 13 /* 1 = Input/high impedance, 0 = drive low */

u8g2/csrc/u8x8.h

Line 370 in bdb7896

uint8_t pins[U8X8_PIN_CNT]; /* defines a pinlist: Mainly a list of pins for the Arduino Environment, use U8X8_PIN_xxx to access */