Hi, I first tried to load elli/Runtime/stm32/tests/test_Serial_write_uint8 to ell-i, but nothing is received in minicom or screen. Then I tried to manually initialize RCC and USART ( I tried both USART1 and USART2), but still failed. I'm now trying to port the debugger to ell-i, but without working serial I can't make it. Could anyone give a hand? Has anyone got serial working on ell-i with minicom or any other common terminal? thx & rgds, -Qinglai