4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
33 * \author Andrea Righi <arighi@develer.com>
35 * \brief Kernel project.
37 * This is a minimalist kernel project: it just initializes the hardware and
38 * creates an independent process to blink an LED, while the main loop
39 * continues to monitor the stack utilization of all the processes.
42 #include "hw/hw_led.h"
44 #include <cfg/debug.h>
47 #include <cpu/power.h>
49 #include <drv/timer.h>
52 #include <kern/proc.h>
53 #include <kern/monitor.h>
57 static void init(void)
59 /* Enable all the interrupts */
62 /* Initialize debugging module (allow kprintf(), etc.) */
64 /* Initialize system timer */
67 * XXX: Arduino has a single UART port that was previously
68 * initialized for debugging purpose.
69 * In order to activate the serial driver you should disable
70 * the debugging module.
73 /* Initialize UART0 */
74 ser_init(&out, SER_UART0);
75 /* Configure UART0 to work at 115.200 bps */
76 ser_setbaudrate(&out, 115200);
80 /* Initialize LED driver */
84 * Kernel initialization: processes (allow to create and dispatch
85 * processes using proc_new()).
90 static void NORETURN led_process(void)
94 /* Periodically blink the led (toggle each 100 ms) */
107 /* Hardware initialization */
110 /* Create a new child process */
111 proc_new(led_process, NULL, KERN_MINSTACKSIZE * 2, NULL);
114 * The main process is kept to periodically report the stack
115 * utilization of all the processes (1 probe per second).