I'm working and learning basic controls in samd21 xplained pro In that, the USART callback example is the one i tried for EDBG ort. and i would like to go for USART in EXT1 or 2 or 3. but, whatever i properly do a configuration. the port is not getting and data from PC as well as not sendng any any data. i replaced properly all the EDBG related macros to EXT1 macros.
some people has already discussed about this. there some are telling use I2C pins in place of UART. i know sure that won't work. Some have told to add the enable transmitter and receiver line using this sort of EXT1_UART_SERCOM_DMAC_ID_TX. i did even this also. not there is no improvement.
Can anyone give suggestions. What i nedd to change. bcoz it is working well and good in EDBG port.