We are using BB-C4.
In the UART2 serial port on expansion header, we measured the voltages and UART2_Rx UART2_Tx when the channel is idle we note that Tx is “1” (1V8) and Rx is “0” (0V).
For our application we need Rx idle to “1”, as it is in the case UART3_Rx whose value can be measured at the test point TP22 (1V8 when idle).
We try to set the status of UART2_Rx on beagle.h (uboot) to Type Pull Up but this did not work.
Does anyone know how to make the correct settings to make it as in the case of UART3?
Thank you.