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35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
// SPDX-FileCopyrightText: 2025 Tillitis AB <tillitis.se>
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// SPDX-License-Identifier: BSD-2-Clause
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#include <stddef.h>
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#include <stdint.h>
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#ifndef TKEY_IO_H
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#define TKEY_IO_H
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// I/O endpoints. Keep it as bits possible to use in a bitmask in
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// readselect().
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//
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// Note that the DEBUG, CDC, and FIDO should be kept the same on
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// the CH552 side.
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enum ioend {
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IO_NONE = 0x00, // No endpoint
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IO_UART = 0x01, // Only destination, raw UART access
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IO_QEMU = 0x02, // Only destination, QEMU debug port
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IO_CH552 = 0x10, // Internal CH552 control port
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IO_DEBUG = 0x20, // HID debug port
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IO_CDC = 0x40, // CDC "serial port"
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IO_FIDO = 0x80, // FIDO security token port
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};
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void write(enum ioend dest, const uint8_t *buf, size_t nbytes);
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int read(enum ioend src, uint8_t *buf, size_t bufsize, size_t nbytes);
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int uart_read(uint8_t *buf, size_t bufsize, size_t nbytes);
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int readselect(int bitmask, enum ioend *endpoint, uint8_t *len);
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void putchar(enum ioend dest, const uint8_t ch);
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void puthex(enum ioend dest, const uint8_t ch);
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void putinthex(enum ioend dest, const uint32_t n);
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void puts(enum ioend dest, const char *s);
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void hexdump(enum ioend dest, void *buf, int len);
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#endif
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