Hi nxp technician, I have used genavb-apps-freertos-5_6_0 to port modbus to do modbus read/write register operation on serial port 2, and I can observe that data is received in modbus_slave tool, but the same pin, the same operation on genavb-apps-7_0_0 to use serial port 2 to send data is not received in modbus_slave tool, but other serial pins either 5.6 or 7.0 can work fine. However, the same pins and the same way of operation on genavb-apps-freertos-7_0_0 are not receiving data on modbus_slave tool using serial port 2, but the other serial pins are working fine, both 5.6 and 7.0. I would like to ask if genavb-apps-freertos-7_0_0 occupies serial port 2? I searched globally for IOMUXC_GPIO_DISP_B2_10_LPUART2_TXD and found that there are other interfaces in use, I've commented them out but they still don't work, I'd like to know if Serial 2 is occupied by any other function or pin multiplexing in genavb-apps-freertos-7_0_0?
Hi @ZhaoXingLi
About this IOMUXC_GPIO_DISP_B2_10_LPUART2_TXD.
I checked boards/evkbmimxrt1170/demo_apps/avb_tsn/common/cm7/board.c
genavb-apps-freertos-7_0_0 and genavb-apps-freertos-5_6_0 are both the same.
BR
Harry.