Someone had a similar experience success?
Using the kernel function i2c_gpio. C i2c_algo_bit. C i2c_core. C set the gpio to i2c pin
Now can catch device i2c - 0/00-0048/input/input5
But sda SCL has been high for
In the program manual lower pin can realize gpiod_set_value ((), 0);
But the state is the state has not been updated
Gpiod_set_value ((), the state);
As with effect of gpio_set_value
Dtsi configuration
I2c @ {0
I2c - gpio, open - sda - drain; tapping
I2c - gpio, open - SCL - drain; tapping
Compatible="i2c - gpio";
.
Ts @ 48 {
Compatible="ts_touch";
Irq_gpio=& lt; & TLMM.. 0 x00 & gt;;
.
}

CodePudding user response:

Now have a waveform, but read data is 0 XFF or 0 x00, what reason?

CodePudding user response:

C
i2c_gpio. C i2c_algo_bit.Call set_value and getvalue sometimes seems to pin doesn't work?

CodePudding user response:

CodePudding user response:

Your simulated I2C clock, co-ordinate with the slaver?
Timing is correct?
Slaver ID is correct?
Have a slaver reply?

CodePudding user response:

DSP GPIO?

CodePudding user response:

Gpio simulation i2c is really practical, you can try to drive a try from the device,