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control_2xxx.c
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control_2xxx.c
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/*
* Copyright (C) 2014 Paul Stoffregen <paul@pjrc.com>
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "control_2xxx.h"
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include "serial.h"
void hard_reset_to_bootloader(void)
{
/* Use this lines for flashing a node with interrupted DTR line */
/* printf("Press Reset - confirm with anykey\n");
getchar();
*/
printf("Reset CPU (into bootloader)\r\n");
set_rts(1); // RTS (ttl level) connects to P0.14
/* the next two lines should be commented for the prepared node */
set_dtr(1); // DTR (ttl level) connects to RST
send_break_signal(); // or break detect circuit to RST
usleep(75000);
/* Use this lines for flashing a node with interrupted DTR line */
/* printf("Release Reset - confirm with anykey\n");
getchar();
*/
set_dtr(0); // allow the CPU to run:
set_baud(baud_rate);
set_rts(1); // set RTS again (as it has been reset by set_baudrate)
usleep(40000);
}
void hard_reset_to_user_code(void)
{
printf("Reset CPU (into user code)\r\n");
set_rts(0); // RTS (ttl level) connects to P0.14
set_dtr(1); // DTR (ttl level) connects to RST
send_break_signal(); // or break detect circuit to RST
usleep(75000);
set_dtr(0); // allow the CPU to run
usleep(40000);
}