Hi Petro, The current RS485 implementation used on ESP32 is not using internal RS485 controller of ESP32, it is implemented by "software". So you can use it connecting a RS485 transceiver to UART port and using the right DIR pin controller by RS485 driver.
It is possible to use the internal IP RS485 from ESP32 or ESP32-S3, you just need to look how it is done in the ESP-IDF and replicate it. But the SW RS485 works fine and it is easier to implement. BR, Alan On 9/2/23, Petro Karashchenko <petro.karashche...@gmail.com> wrote: > Hi, > > I'm currently trying to enable RS485 support for ESP32-S3. I see that there > is some support of RS485 mode in ESP32 and it seems to be straight forward > to port it to ESP32-S3 however I see that currently ESP32-S3 lowputc has > next lines > > modifyreg32(UART_RS485_CONF_REG(priv->id), UART_RS485_EN_M, 0); > modifyreg32(UART_RS485_CONF_REG(priv->id), UART_RS485TX_RX_EN_M, 0); > modifyreg32(UART_RS485_CONF_REG(priv->id), UART_RS485RXBY_TX_EN_M, 0); > > > So I wonder if anybody has already leveraged the RS458 capabilities of > ESP32-S3? > > Additionally I see that the same registers are available for ESP32, but I > do not see any place where the "UART_RS485_CONF_REG" register is modified > for ESP32 with RS485 enabled UARTs. > > Best regards, > Petro >
