RIOT/pttu/board_init.c

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/**
 * @ingroup	pttu
 * @{
 */

/**
 * @file
 * @brief 		PTTU board initialization
 *
 * @author      Freie Universit<EFBFBD>t Berlin, Computer Systems & Telematics, FeuerWhere project
 * @author		Heiko Will
 * @author		Kaspar Schleise
 * @author		Michael Baar <baar@inf.fu-berlin.de>
 *
 * @note		$Id: cmdengine-out.c 971 2009-04-07 13:41:36Z baar $
 */
#include "lpc23xx.h"
#include "VIC.h"
#include "cpu.h"

#define PCRTC         BIT9
#define CL_CPU_DIV    4

/*---------------------------------------------------------------------------*/
/**
 * @brief	Enabling MAM and setting number of clocks used for Flash memory fetch
 * @internal
 */
void
init_mam(void)
{
	MAMCR  = 0x0000;
	MAMTIM = 0x0003;
	MAMCR  = 0x0002;
}
/*---------------------------------------------------------------------------*/
static inline void
pllfeed(void)
{
	PLLFEED = 0xAA;
	PLLFEED = 0x55;
}
/*---------------------------------------------------------------------------*/
void init_clks1(void)
{
	// Disconnect PLL
	PLLCON &= ~0x0002;
	pllfeed();

	// Disable PLL
	PLLCON &= ~0x0001;
	pllfeed();

	SCS |= 0x20;						// Enable main OSC
	while( !(SCS & 0x40) );				// Wait until main OSC is usable

	/* select main OSC, 16MHz, as the PLL clock source */
	CLKSRCSEL = 0x0001;

	// Setting Multiplier and Divider values
  	PLLCFG = 0x0008;					// M=9 N=1 Fcco = 288 MHz
  	pllfeed();

	// Enabling the PLL */
	PLLCON = 0x0001;
	pllfeed();

	/* Set clock divider to 4 (value+1) */
	CCLKCFG = CL_CPU_DIV - 1;			// Fcpu = 72 MHz

#if USE_USB
	USBCLKCFG = USBCLKDivValue;		/* usbclk = 288 MHz/6 = 48 MHz */
#endif
}

void init_clks2(void){
	// Wait for the PLL to lock to set frequency
	while(!(PLLSTAT & BIT26));

	// Connect the PLL as the clock source
	PLLCON = 0x0003;
	pllfeed();

	/* Check connect bit status */
	while (!(PLLSTAT & BIT25));
}

void bl_init_clks(void)
{
    PCONP = PCRTC;          // switch off everything except RTC
    init_clks1();
    init_clks2();
    init_mam();
}


// Michael, Do not change anything here! even not the redundant parts!
void bl_init_ports(void)
{
	SCS |= BIT0;											// Set IO Ports to fast switching mode

	/* UART0 */
	PINSEL0 |= BIT4 + BIT6;									// RxD0 and TxD0
	PINSEL0 &= ~(BIT5 + BIT7);

	/*Turn Board on*/
	PINMODE0 |= BIT1;
	FIO0DIR |= BIT27;
	FIO0CLR = BIT27;

	/* 5V*/
	FIO1DIR |= BIT28; // Synch
	FIO1SET = BIT28;  // No Powersave

	FIO1DIR |= BIT27; // 5V off
	FIO1CLR = BIT27;

	/* Disable Resistors on Buttons */
	PINMODE4 |= BIT9 + BIT11;

	/* Disable Resistors on LED - and Ports to output*/
	PINMODE7 |= BIT19 + BIT21;
	PINMODE2 |= BIT1;
	FIO1DIR |= BIT0;
	FIO3DIR |= BIT25 + BIT26;
	FIO1SET = BIT0;
	FIO3SET = BIT25 + BIT26;

	// Config and Disable PA
	FIO1DIR |= BIT25 + BIT26 + BIT22;
	FIO1SET = BIT26;
	FIO1CLR = BIT25;
	FIO1CLR = BIT22; // PA /Shutdown
	FIO0DIR |= BIT26; // **  // Important: First put this Port as DA 2.0V and then turn on PA!!
	FIO0SET = BIT26; // **

	// Configure GPS
	PINMODE3 |= BIT3 + BIT7; // No Pullup on 1.17 & 1.19
	PINMODE9 |= BIT27 + BIT25; // No Pullup for Uart
	FIO1DIR |= BIT17;
	FIO1CLR = BIT17; // Turn off GPS
	FIO1DIR |= BIT19;
	FIO1CLR = BIT19; // Hold in Reset
	PINSEL9 |= BIT24 + BIT25 + BIT26 + BIT27; //4.28 & 4.29 as Uart3

	// Nanotron
	FIO2DIR &= ~BIT8;	// nanotron uC IRQ as input
	FIO1DIR |= BIT15;	// nanotron power on reset
	FIO1DIR &= ~BIT14;	// nanotron uC RESET as input
	FIO1DIR &= ~BIT10;	// nanotron uC Vcc as input
	FIO1DIR |= BIT9;	// nanotron ENABLE as output
	FIO1DIR &= ~BIT4;	// nanotron Rx/Tx as input

	FIO1CLR = BIT15;
	FIO1CLR = BIT9;		// Enable power

	PINMODE1 |= BIT1;   // No Pullup for CS
	FIO0DIR |= BIT16;   // CS as output
	FIO0SET = BIT16;	// drive cs inactive
	FIO0DIR |= BIT18 + BIT15;   // SPi Output

	// RFID
	FIO1DIR |= BIT1;    // RFID Power
	FIO1CLR = BIT1;		//

	FIO0DIR |= BIT1;    // RFID Reset
	FIO0SET = BIT1;     // Hold in Reset

	FIO0DIR &= ~BIT10;  // LED as INPUT
	FIO0DIR &= ~BIT11;  // DATA as INPUT
	PINMODE0 |= BIT19 + BIT21; // No Pullups

	// LTC4150 ARM
	FIO0DIR |= BIT5;
	FIO0CLR = BIT5;

	// LTC4150 System
	FIO0DIR |= BIT24;
	FIO0CLR = BIT24;

	// Battery Voltage (AD)
	PINMODE1 |= BIT19;
	PINSEL1 &= ~BIT19;
	PINSEL1 |= BIT18;

	//cc1100
	FIO0DIR |= BIT6 + BIT7 + BIT9;
	FIO0SET = BIT6;
	FIO0SET = BIT7 + BIT9;

	//SD
	FIO2DIR |= BIT12 + BIT13 + BIT11;
	FIO0DIR |= BIT20 + BIT22 + BIT21;

	//Tetra
	FIO2DIR |= BIT0 + BIT7;


	// No Pullups on any port
	int nopullup = BIT1 + BIT3 + BIT5 + BIT7 + BIT9 + BIT11 + BIT13 + BIT15 + BIT17 + BIT19 + BIT21 + BIT23 + BIT25 + BIT27 + BIT29 + BIT31;
	PINMODE0 = nopullup - BIT13 - BIT15 - BIT17 - BIT19;
	PINMODE1 = BIT1 + BIT3 + BIT5 + BIT7 + BIT9 + BIT11 + BIT13 + BIT15 + BIT17 + BIT19 + BIT21;
	PINMODE2 = nopullup;
	PINMODE3 = nopullup;
	PINMODE4 = nopullup;
	PINMODE5 = nopullup;
	PINMODE6 = nopullup;
	PINMODE7 = nopullup;
	PINMODE8 = nopullup;
	PINMODE9 = nopullup;
}

/** @} */