Clock Issues with multi UART

Technical questions regarding the XTC tools and programming with XMOS.
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TSC
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Joined: Sun Mar 06, 2011 11:39 pm

Clock Issues with multi UART

Post by TSC »

So I'm trying to use module_multi_uart along with app_sk_muart_com_demo.

I don't have a UART slice card (which provides an external 1.8432 MHz clock for the transmitter), so I'm using the internal clock by calling run_multi_uart_rxtx_int_clk(...).

I should be getting 11520 baud transmitted from the XMOS board. With a scope, I measure a 680us bit length, corresponding to about ~1470.6 baud.

I've tried playing around with some #define values in multi_uart_tx_conf.h but mostly it has no effect.

Is the code broken for cases where the internal clock is used, or am I missing something?

Thanks


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dan
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Joined: Mon Feb 22, 2010 2:30 pm
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Post by dan »

Hi TSC, to use the multi-uart xSOFTip component you *do* need the external 1.8 MHz reference clock.
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