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80 lines
1.7 KiB
C
80 lines
1.7 KiB
C
/*
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* main.c - Main function of the SRF02 ultrasonic sensor project.
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* Copyright (C) 2013 Zakaria Kasmi <zkasmi@inf.fu-berlin.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_msba2
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* @{
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*/
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/**
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* @file
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* @brief MSB-A2 board initialization
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*
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* @author Heiko Will
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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* @author Michael Baar <baar@inf.fu-berlin.de>
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* @author Zakaria Kasmi <zkasmi@inf.fu-berlin.de>
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*
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* @note $Id$
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*/
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#include "board.h"
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#include "cpu.h"
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#include "periph/init.h"
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void bl_init_ports(void)
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{
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gpio_init_ports();
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/* UART0 */
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PINSEL0 |= BIT4 + BIT6; /* RxD0 and TxD0 */
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PINSEL0 &= ~(BIT5 + BIT7);
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/* LEDS */
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FIO3DIR |= LED0_MASK;
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FIO3DIR |= LED1_MASK;
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LED0_OFF;
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LED0_OFF;
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periph_init();
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}
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void init_clks1(void)
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{
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/* Disconnect PLL */
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PLLCON &= ~0x0002;
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pllfeed();
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/* Disable PLL */
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PLLCON &= ~0x0001;
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pllfeed();
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SCS |= 0x20; /* Enable main OSC */
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while (!(SCS & 0x40)); /* Wait until main OSC is usable */
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/* select main OSC, 16MHz, as the PLL clock source */
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CLKSRCSEL = 0x0001;
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/* Setting Multiplier and Divider values */
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PLLCFG = 0x0008; /* M=9 N=1 Fcco = 288 MHz */
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pllfeed();
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/* Enabling the PLL */
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PLLCON = 0x0001;
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pllfeed();
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/* Set clock divider to 4 (value+1) */
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CCLKCFG = CL_CPU_DIV - 1; /* Fcpu = 72 MHz */
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#if USE_USB
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USBCLKCFG = USBCLKDivValue; /* usbclk = 288 MHz/6 = 48 MHz */
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#endif
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}
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