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xyz-modem: Allow to cancel transfer also by CTRL+C
Currently it is possible to cancel loadx and loady commands by pressing CTRL+X (CAN character) at least 3 times quickly. All other U-Boot commands, including loadb and loads can be cancelled by CTRL+C. So allow it also in xyz-modem code used by loadx and loady commands. Implement it by handling CTRL+C (ETX character) in the same way as CTRL+X (CAN character). Due to how x/y-modem protocol works, it is required to press CTRL+C or CTRL+X at least 3 times quickly. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Simon Glass <sjg@chromium.org>
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@ -32,6 +32,7 @@
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/* Values magic to the protocol */
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#define SOH 0x01
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#define STX 0x02
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#define ETX 0x03 /* ^C for interrupt */
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#define EOT 0x04
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#define ACK 0x06
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#define BSP 0x08
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@ -283,6 +284,7 @@ xyzModem_get_hdr (void)
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hdr_found = true;
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break;
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case CAN:
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case ETX:
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xyz.total_CAN++;
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ZM_DEBUG (zm_dump (__LINE__));
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if (++can_total == xyzModem_CAN_COUNT)
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