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path: root/testhal/STM32/STM32F3xx/WDG/main.c
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/*
    ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio

    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/

#include "ch.h"
#include "hal.h"

/*
 * Watchdog deadline set to more than one second (LSI=40000 / (64 * 1000)).
 */
static const WDGConfig wdgcfg = {
  STM32_IWDG_PR_64,
  STM32_IWDG_RL(1000),
  STM32_IWDG_WIN_DISABLED
};

/*
 * Application entry point.
 */
int main(void) {

  /*
   * System initializations.
   * - HAL initialization, this also initializes the configured device drivers
   *   and performs the board-specific initializations.
   * - Kernel initialization, the main() function becomes a thread and the
   *   RTOS is active.
   */
  halInit();
  chSysInit();

  /*
   * Starting the watchdog driver.
   */
  wdgStart(&WDGD1, &wdgcfg);

  /*
   * Normal main() thread activity, it resets the watchdog.
   */
  while (true) {
    wdgReset(&WDGD1);
    palToggleLine(LINE_LED4_BLUE);
    chThdSleepMilliseconds(500);
  }
  return 0;
}
/span>, unsigned n) { unsigned long __d0, __d1, __d2, __n = n; __asm__ __volatile__( " cmp $"STR(2*BYTES_PER_LONG-1)",%0\n" " jbe 1f\n" " mov %1,%0\n" " neg %0\n" " and $"STR(BYTES_PER_LONG-1)",%0\n" " sub %0,%3\n" "4: rep; movsb\n" /* make 'to' address aligned */ " mov %3,%0\n" " shr $"STR(LONG_BYTEORDER)",%0\n" " and $"STR(BYTES_PER_LONG-1)",%3\n" " .align 2,0x90\n" "0: rep; movs"__OS"\n" /* as many words as possible... */ " mov %3,%0\n" "1: rep; movsb\n" /* ...remainder copied as bytes */ "2:\n" ".section .fixup,\"ax\"\n" "5: add %3,%0\n" " jmp 2b\n" "3: lea 0(%3,%0,"STR(BYTES_PER_LONG)"),%0\n" " jmp 2b\n" ".previous\n" ".section __ex_table,\"a\"\n" " "__FIXUP_ALIGN"\n" " "__FIXUP_WORD" 4b,5b\n" " "__FIXUP_WORD" 0b,3b\n" " "__FIXUP_WORD" 1b,2b\n" ".previous" : "=&c"(__n), "=&D" (__d0), "=&S" (__d1), "=r"(__d2) : "3"(__n), "0"(__n), "1"(to), "2"(from) : "memory"); return (unsigned)__n; } unsigned long __copy_from_user_ll(void *to, const void __user *from, unsigned n) { unsigned long __d0, __d1, __d2, __n = n; __asm__ __volatile__( " cmp $"STR(2*BYTES_PER_LONG-1)",%0\n" " jbe 1f\n" " mov %1,%0\n" " neg %0\n" " and $"STR(BYTES_PER_LONG-1)",%0\n" " sub %0,%3\n" "4: rep; movsb\n" /* make 'to' address aligned */ " mov %3,%0\n" " shr $"STR(LONG_BYTEORDER)",%0\n" " and $"STR(BYTES_PER_LONG-1)",%3\n" " .align 2,0x90\n" "0: rep; movs"__OS"\n" /* as many words as possible... */ " mov %3,%0\n" "1: rep; movsb\n" /* ...remainder copied as bytes */ "2:\n" ".section .fixup,\"ax\"\n" "5: add %3,%0\n" " jmp 6f\n" "3: lea 0(%3,%0,"STR(BYTES_PER_LONG)"),%0\n" "6: push %0\n" " push %%"__OP"ax\n" " xor %%eax,%%eax\n" " rep; stosb\n" " pop %%"__OP"ax\n" " pop %0\n" " jmp 2b\n" ".previous\n" ".section __ex_table,\"a\"\n" " "__FIXUP_ALIGN"\n" " "__FIXUP_WORD" 4b,5b\n" " "__FIXUP_WORD" 0b,3b\n" " "__FIXUP_WORD" 1b,6b\n" ".previous" : "=&c"(__n), "=&D" (__d0), "=&S" (__d1), "=r"(__d2) : "3"(__n), "0"(__n), "1"(to), "2"(from) : "memory"); return (unsigned)__n; } /** * copy_to_user: - Copy a block of data into user space. * @to: Destination address, in user space. * @from: Source address, in kernel space. * @n: Number of bytes to copy. * * Context: User context only. This function may sleep. * * Copy data from kernel space to user space. * * Returns number of bytes that could not be copied. * On success, this will be zero. */ unsigned long copy_to_user(void __user *to, const void *from, unsigned n) { if (access_ok(to, n)) n = __copy_to_user(to, from, n); return n; } /** * copy_from_user: - Copy a block of data from user space. * @to: Destination address, in kernel space. * @from: Source address, in user space. * @n: Number of bytes to copy. * * Context: User context only. This function may sleep. * * Copy data from user space to kernel space. * * Returns number of bytes that could not be copied. * On success, this will be zero. * * If some data could not be copied, this function will pad the copied * data to the requested size using zero bytes. */ unsigned long copy_from_user(void *to, const void __user *from, unsigned n) { if (access_ok(from, n)) n = __copy_from_user(to, from, n); else memset(to, 0, n); return n; }