UART DMA and CTS

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lsrbigfoot
Contributor III

Does the UART-CTS input signal (when activated) have the ability to block/unblock UART-Tx DMA traffic automatically (without processor intervention)?

If not, then what extra controls are required to make this happen?

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mjbcswitzerland
Specialist V

Hi

Check the UART MODEM register for the part type that you are using.

The control bit TXCTSE enables CTS control of the transmitter, which also pauses DMA transmission.

Regards

Mark

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mjbcswitzerland
Specialist V

Hi

Check the UART MODEM register for the part type that you are using.

The control bit TXCTSE enables CTS control of the transmitter, which also pauses DMA transmission.

Regards

Mark

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