mirror of
https://github.com/trezor/trezor-firmware.git
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44 lines
1.4 KiB
C
44 lines
1.4 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 "common.h"
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#include "py/mphal.h"
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#include "usb.h"
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static int vcp_iface_num = -1;
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int mp_hal_stdin_rx_chr(void) {
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ensure(sectrue * (vcp_iface_num >= 0), "vcp stdio is not configured");
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uint8_t c = 0;
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int r = usb_vcp_read_blocking(vcp_iface_num, &c, 1, -1);
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(void)r;
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return c;
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}
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void mp_hal_stdout_tx_strn(const char *str, size_t len) {
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if (vcp_iface_num >= 0) {
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// The write timeout is set to 0, because otherwise when the VCP receive
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// buffer on the host gets full, the timeout will block device operation.
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int r = usb_vcp_write_blocking(vcp_iface_num, (const uint8_t *)str, len, 0);
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(void)r;
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}
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}
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void mp_hal_set_vcp_iface(int iface_num) { vcp_iface_num = iface_num; }
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