mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-23 16:08:17 +00:00
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "prodtest_common.h"
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#include "mini_printf.h"
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#include "usb.h"
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void vcp_puts(const char *s, size_t len) {
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int r = usb_vcp_write_blocking(VCP_IFACE, (const uint8_t *)s, len, -1);
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(void)r;
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}
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void vcp_print(const char *fmt, ...) {
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static char buf[128];
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va_list va;
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va_start(va, fmt);
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int r = mini_vsnprintf(buf, sizeof(buf), fmt, va);
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va_end(va);
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vcp_puts(buf, r);
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}
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void vcp_println(const char *fmt, ...) {
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static char buf[128];
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va_list va;
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va_start(va, fmt);
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int r = mini_vsnprintf(buf, sizeof(buf), fmt, va);
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va_end(va);
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vcp_puts(buf, r);
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vcp_puts("\r\n", 2);
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}
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void vcp_println_hex(const uint8_t *data, uint16_t len) {
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for (int i = 0; i < len; i++) {
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vcp_print("%02X", data[i]);
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}
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vcp_puts("\r\n", 2);
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}
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static uint16_t get_byte_from_hex(const char **hex) {
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uint8_t result = 0;
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// Skip whitespace.
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while (**hex == ' ') {
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*hex += 1;
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}
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for (int i = 0; i < 2; i++) {
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result <<= 4;
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char c = **hex;
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if (c >= '0' && c <= '9') {
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result |= c - '0';
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} else if (c >= 'A' && c <= 'F') {
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result |= c - 'A' + 10;
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} else if (c >= 'a' && c <= 'f') {
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result |= c - 'a' + 10;
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} else if (c == '\0') {
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return 0x100;
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} else {
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return 0xFFFF;
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}
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*hex += 1;
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}
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return result;
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}
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int get_from_hex(uint8_t *buf, uint16_t buf_len, const char *hex) {
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int len = 0;
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uint16_t b = get_byte_from_hex(&hex);
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for (len = 0; len < buf_len && b <= 0xff; ++len) {
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buf[len] = b;
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b = get_byte_from_hex(&hex);
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}
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if (b == 0x100) {
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// Success.
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return len;
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}
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if (b > 0xff) {
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// Non-hexadecimal character.
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return -1;
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}
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// Buffer too small.
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return -2;
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}
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