/*

* Copyright (c) 2013, The DDK Project

* Dmitry Nedospasov <dmitry at nedos dot net>

* Thorsten Schroeder <ths at modzero dot ch>

*

* All rights reserved.

*

* This file is part of Die Datenkrake (DDK).

*

* "THE BEER-WARE LICENSE" (Revision 42):

* <dmitry at nedos dot net> and <ths at modzero dot ch> wrote this file. As

* long as you retain this notice you can do whatever you want with this stuff.

* If we meet some day, and you think this stuff is worth it, you can buy us a

* beer in return. Die Datenkrake Project.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED. IN NO EVENT SHALL THE DDK PROJECT BE LIABLE FOR ANY DIRECT,

* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*

* File: jtag_1149.c

* Description: Implementation of JTAG related functions (for programming the FPGA).

*

*/

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "jtag_1149.h"

#include "lpc17xx_pinsel.h"

#include "lpc17xx_gpio.h"

#include "lpc17xx_timer.h"

#include "helper.h"

static PINSEL_CFG_Type PinCfg;

volatile uint32_t g_utick = 0;

void jtag_init(void)

{

uint32_t i=0;

PinCfg.Funcnum = 0; // GPIO

PinCfg.OpenDrain = 0;

PinCfg.Pinmode = 0;

puts("");

printf("Init JTAG port pins: TDO, ");

PinCfg.Portnum = JTAG_TDOPORT;

PinCfg.Pinnum = JTAG_TDOPIN;

PINSEL_ConfigPin(&PinCfg);

printf("TDI, ");

PinCfg.Portnum = JTAG_TDIPORT;

PinCfg.Pinnum = JTAG_TDIPIN;

PINSEL_ConfigPin(&PinCfg);

printf("TMS, ");

PinCfg.Portnum = JTAG_TMSPORT;

PinCfg.Pinnum = JTAG_TMSPIN;

PINSEL_ConfigPin(&PinCfg);

printf("TRST, ");

PinCfg.Portnum = JTAG_TRSTPORT;

PinCfg.Pinnum = JTAG_TRSTPIN;

PINSEL_ConfigPin(&PinCfg);

printf("TCK - done\n");

PinCfg.Portnum = JTAG_TCKPORT;

PinCfg.Pinnum = JTAG_TCKPIN;

PINSEL_ConfigPin(&PinCfg);

GPIO_SetDir(JTAG_TDIPORT, JTAG_TDI, 1);

GPIO_SetDir(JTAG_TDOPORT, JTAG_TDO, 0);

GPIO_SetDir(JTAG_TMSPORT, JTAG_TMS, 1);

GPIO_SetDir(JTAG_TCKPORT, JTAG_TCK, 1);

GPIO_SetDir(JTAG_TRSTPORT, JTAG_TRST, 1);

GPIO_ClearValue(JTAG_TDIPORT, JTAG_TDI);

GPIO_ClearValue(JTAG_TMSPORT, JTAG_TMS);

GPIO_ClearValue(JTAG_TCKPORT, JTAG_TCK);

GPIO_ClearValue(JTAG_TRSTPORT, JTAG_TRST);

GPIO_SetValue( JTAG_TRSTPORT, JTAG_TRST);

return;

}