unknown signals on GPIO16
Posted: Mon Sep 11, 2017 5:39 pm
We are developing on Olimex ESP32-Gateway demo board with ESPWROOM32 module.
Trying to use GPIO16 for UART2 RXD signal is not working, because no matter what we do, there are some other unknown signals output on this pin.
We even tried configuring the pin via the IO_MUX as follows:
Can anyone give me a clue what is going on there?
Trying to use GPIO16 for UART2 RXD signal is not working, because no matter what we do, there are some other unknown signals output on this pin.
We even tried configuring the pin via the IO_MUX as follows:
Code: Select all
WRITE_PERI_REG(PERIPHS_IO_MUX_GPIO16_U, FUNC_GPIO16_U2RXD|FUN_IE );
WRITE_PERI_REG(GPIO_FUNC198_IN_SEL_CFG_REG, GPIO_SIG198_IN_SEL);