efabless / EF_UART

Universal Asynchronous Receiver/Transmitter (UART) with FIFOs Soft IP
Apache License 2.0
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data bits 9 deadlock #8

Closed M0stafaRady closed 5 months ago

M0stafaRady commented 8 months ago

When the data bits length is configured with 9 the transmitting and receiving FSM would stuck forever at the data_st state because the length of regs count_next and count_reg are only 3 bits so the condition to exit the stateif(count_next == (data_size - 1))will never be triggered. https://github.com/efabless/EF_UART/blob/a99c27adaf30e3da114f6e19d30105970e83a741/hdl/rtl/EF_UART.v#L499-L515