RDM RTS pin issue

[BartJozwicki]

Hello,

I am using ESP-IDF v5.4.1, on ESP32H2, I can read DMX fine. When I want to respond to the RDM discovery packet however, my RTS pin is on for a few micro seconds (Yellow) and then turns off, but you can still see TX signals being transmitted (Turquoise):

I have only changed 2 functions for the code to compile on ESP32H2:

void DMX_ISR_ATTR dmx_uart_set_rts(dmx_port_t dmx_num, int set)
{
struct dmx_uart_t *uart = &dmx_uart_context[dmx_num];
uart_ll_set_rts_active_level(uart->dev, set);
}
and
int dmx_uart_get_rts(dmx_port_t dmx_num)
{
struct dmx_uart_t *uart = &dmx_uart_context[dmx_num];
return uart->dev->conf0_sync.sw_rts;
}

That is my main task's loop:

while (1)
{   
    size_last_received_dmx = dmx_receive(DMX_UART_NUMBER, &s_packet, DMX_TIMEOUT_TICK); 
    if (size_last_received_dmx > 0) 
    {           
        if (s_packet.is_rdm) 
        {
            b_rdm_send_error = rdm_send_response(DMX_UART_NUMBER);
        }   
        // Check that no errors occurred.
        if (DMX_OK == s_packet.err) 
        {
           // dmx_read(DMX_UART_NUMBER, dmx_data, size_last_received_dmx);
           // DMX_process_packet(dmx_data);    
        }
        else 
        {
           // ESP_LOGE(TAG, "An error occurred receiving DMX!");
        }
    }     
}   

I would greatly appreciate your help!

[riwalker]

I've just built the example from 4.1 library with no changes.
I struggled with an older library, so just rebuilt afresh and it works.
apart from ESP32C6 I'm using the 3rd UART which is LP, hence forced to use pins TX_PIN 5, RX_PIN 4, EN_PIN 2
RDM seems to work fine.
(as per #173 , sensors had to change the set to get in 'sensor_aparameter.c' inside 'rdm_rhd_get_sensor_definition()' but basic works.

[BartJozwicki]

I have downloaded the latest version without changes and copied RDMresponder example. Now I answer to the first discovery but I don't see my device appearing on SWISSON (device I use to test DMX and RDM). I have also transitioned to ESP32S3, what board are you using? Was there anything you changed? Could you please share your main code and what board you have been using? Thanks!