Control of RTS and DTR in CY7C65215

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NXTY_Nishinaga
Level 5
Level 5
Distributor - NEXTY (Japan)
100 sign-ins 10 solutions authored 25 replies posted

Hello,

In CY7C65215, is it possible to control ON/OFF of RTS and DTR by control transfer request (SET_CONTROL_LINE_STATE) of CDC from host?

Regards.

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MallikaK_22
Moderator
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50 likes received 750 replies posted 250 solutions authored

Hi,

No, CY7C65223 firmware does support SET_CONTROL_LINE_STATE. I did a simple test to demonstrate this-

>> Configured CY7C65223 from the USB serial configuration utility to UART CDC mode, 4-pin. Using a terminal application, I enabled flow control and toggled the RTS button (as shown in the attached screenshot). The toggling was observed on RTS line and is captures using a saleae logic analyzer.

1.PNG2.PNG

Apologies for misunderstanding your question in the first place.

Regards,

Mallika

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4 Replies
MallikaK_22
Moderator
Moderator
Moderator
50 likes received 750 replies posted 250 solutions authored

Hi,

Kindly note that CY7C65215 is a fixed firmware part. Such changes in the firmware cannot be made.

Regards,

Mallika

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NXTY_Nishinaga
Level 5
Level 5
Distributor - NEXTY (Japan)
100 sign-ins 10 solutions authored 25 replies posted

Hello,

Thank you for your answer.

Does this mean that the CY7C65223 firmware does not support the SET_CONTROL_LINE_STATE request in the CDC class?

Regards.

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NXTY_Nishinaga
Level 5
Level 5
Distributor - NEXTY (Japan)
100 sign-ins 10 solutions authored 25 replies posted

Hello,

To add to my previous question, I would like to connect RTS and DTR to the microcontroller and switch them under control from the host side. Is it possible?

For example, RTS and DTR are controlled from the host side, and mode switching is performed on the microcontroller side.

Regards.

 

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MallikaK_22
Moderator
Moderator
Moderator
50 likes received 750 replies posted 250 solutions authored

Hi,

No, CY7C65223 firmware does support SET_CONTROL_LINE_STATE. I did a simple test to demonstrate this-

>> Configured CY7C65223 from the USB serial configuration utility to UART CDC mode, 4-pin. Using a terminal application, I enabled flow control and toggled the RTS button (as shown in the attached screenshot). The toggling was observed on RTS line and is captures using a saleae logic analyzer.

1.PNG2.PNG

Apologies for misunderstanding your question in the first place.

Regards,

Mallika

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