I²C OUTPUT_OPEN_DRAIN ./. OPEN_DRAIN

[rudi ;-)]

hi
we talk just in time the I²C glitch problem in arduino esp32 core.
not tested just in time, but makes sense:

at we have:

Code: Select all

gpio_set_direction(scl_io, GPIO_MODE_OUTPUT_OD);
gpio_set_direction(sda_io, GPIO_MODE_OUTPUT_OD);

to change it to OPEN_DRAIN only?

Code: Select all

gpio_set_direction(scl_io, GPIO_MODE_DEF_OD);
gpio_set_direction(sda_io, GPIO_MODE_DEF_OD);

i can test earliest this on weekend with OSC ( RIGOL )

best wishes
rudi