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https://github.com/trezor/trezor-firmware.git
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34 lines
801 B
C
34 lines
801 B
C
#include "py/mphal.h"
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#include "usb.h"
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#include "common.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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#define VCP_READ_TIMEOUT 25
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if (vcp_iface_num != -1) {
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uint8_t c = 0;
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while (usb_vcp_read_blocking(vcp_iface_num, &c, 1, VCP_READ_TIMEOUT) < 1) {
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// Wait until we read a byte
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}
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return c;
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} else {
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__fatal_error("vcp stdio is not configured", __FILE__, __LINE__, __func__);
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}
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}
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void mp_hal_stdout_tx_strn(const char *str, size_t len) {
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#define VCP_WRITE_TIMEOUT 0
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if (vcp_iface_num != -1) {
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usb_vcp_write_blocking(vcp_iface_num, (const uint8_t *)str, len, VCP_WRITE_TIMEOUT);
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} else {
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// no-op
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}
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}
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void mp_hal_set_vcp_iface(int iface_num) {
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vcp_iface_num = iface_num;
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}
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