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https://github.com/tillitis/tillitis-key1.git
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108120ffbf
Make read()/write() hide all the details of handling the USB Mode Protocol. Unfortunately this also introduces 4 bytes to the .bss segment which was removed because of lack of FW_RAM, originally just 1 kB. We add back support in start.S and the linker script.
64 lines
1.1 KiB
C
64 lines
1.1 KiB
C
/*
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* Copyright (C) 2022, 2023 - Tillitis AB
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#include "types.h"
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#ifndef PROTO_H
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#define PROTO_H
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enum mode {
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MODE_TKEYCTRL = 0x20,
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MODE_CDC = 0x40,
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MODE_HID = 0x80,
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};
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enum endpoints {
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DST_HW_IFPGA,
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DST_HW_AFPGA,
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DST_FW,
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DST_SW
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};
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enum cmdlen {
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LEN_1,
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LEN_4,
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LEN_32,
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LEN_128
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};
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#define CMDLEN_MAXBYTES 128
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// clang-format off
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enum fwcmd {
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FW_CMD_NAME_VERSION = 0x01,
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FW_RSP_NAME_VERSION = 0x02,
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FW_CMD_LOAD_APP = 0x03,
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FW_RSP_LOAD_APP = 0x04,
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FW_CMD_LOAD_APP_DATA = 0x05,
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FW_RSP_LOAD_APP_DATA = 0x06,
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FW_RSP_LOAD_APP_DATA_READY = 0x07,
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FW_CMD_GET_UDI = 0x08,
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FW_RSP_GET_UDI = 0x09,
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FW_CMD_MAX = 0x0a,
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};
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// clang-format on
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enum status {
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STATUS_OK,
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STATUS_BAD
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};
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struct frame_header {
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uint8_t id;
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enum endpoints endpoint;
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size_t len;
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};
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/*@ -exportlocal @*/
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int read(uint8_t *buf, size_t bufsize, size_t nbytes, enum mode expect_mode);
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void write(const uint8_t *buf, size_t nbytes, enum mode mode);
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void fwreply(struct frame_header hdr, enum fwcmd rspcode, uint8_t *buf);
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int readcommand(struct frame_header *hdr, uint8_t *cmd, int state);
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#endif
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