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💡[QUESTION] control_out_protocol with two OUT packets #140

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peterburk opened this issue Sep 11, 2024 · 0 comments

peterburk commented Sep 11, 2024

To display the CAPS lock LED on a keyboard, it's necessary to send the following:

I've been able to send a single OUT using

                const uint8_t capsReportSetup[8] = { 0x21, 0x09, 0x00, 0x02, 0x01, 0x00, 0x01, 0x00 };
                const uint8_t capsReportOut[1] = {0x02};
                control_out_protocol(device, capsReportSetup, 8, capsReportOut, 1);

but I need to send 2 OUT packets to switch on the LED.

I'm getting a STALL after the first OUT transaction.

Any suggestions how to complete this USB transaction properly using Pico-PIO-USB?

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