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authorPaul Selkirk <paul@psgd.org>2017-02-23 16:58:17 -0500
committerPaul Selkirk <paul@psgd.org>2017-02-23 16:58:17 -0500
commit4398d7ecdf432a2211a9d93deaedb721648dbb15 (patch)
treef9f6e8d33ff74a340e57c04d12283e72d9829ad0 /Drivers/CMSIS/Device/ST/STM32F4xx/Include
parent189df371631a2b7bef91803d449e47470ad6a7bf (diff)
Speed up file upload enormously.
We need to start with a long serial timeout, in order to catch the reboot messages for a firmware upload (this has to be done through the bootloader). But once we start sending the file, cut the serial timeout to 1ms. (I've tested it down to 1us, but that may not work for everyone, and it doesn't improve performance in a statistically significant way.) This brings the time to upload a 4.5MB bitstream from 38:23 to 1:25.
Diffstat (limited to 'Drivers/CMSIS/Device/ST/STM32F4xx/Include')
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generated by cgit v1.2.3 (git 2.25.1) at 2024-09-19 20:03:52 +0000
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/*
 * test-rpc_get_random.c
 * ---------------------
 * Test code for RPC interface to Cryptech hash cores.
 *
 * Copyright (c) 2016, NORDUnet A/S
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the NORDUnet nor the names of its contributors may
 *   be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>

#include <hal.h>

#define DEFAULT_LEN 16

static void hexdump(uint8_t *buf, int len)
{
    for (int i = 0; i < len; ++i)
        printf("%02x%c", buf[i], ((i & 0x07) == 0x07) ? '\n' : ' ');
    if ((len & 0x07) != 0)
        printf("\n");
}

int main(int argc, char *argv[])
{
    int len = 0;
    if (argc > 1)
        len = atoi(argv[1]);
    if (len <= 0)       /* no arg, or bad arg */
        len = DEFAULT_LEN;

    uint8_t rnd[len];

#define check(op) { hal_error_t err; if ((err = (op)) != HAL_OK) { printf("%s: %s\n", #op, hal_error_string(err)); return 1; } }

    check(hal_rpc_client_init());
    check(hal_rpc_get_random(rnd, sizeof(rnd)));

    hexdump(rnd, len);

    check(hal_rpc_client_close());
    return 0;
}