////////////////////////////////////////////////////////////////////////////////
|
////////////////////////////////////////////////////////////////////////////////
|
//
|
//
|
// Filename: gpsdump.c
|
// Filename: gpsdump.c
|
//
|
//
|
// Project: OpenArty, an entirely open SoC based upon the Arty platform
|
// Project: OpenArty, an entirely open SoC based upon the Arty platform
|
//
|
//
|
// Purpose: To dump the GPS UART to the auxiliary UART.
|
// Purpose: To dump the GPS UART to the auxiliary UART.
|
//
|
//
|
// Creator: Dan Gisselquist, Ph.D.
|
// Creator: Dan Gisselquist, Ph.D.
|
// Gisselquist Technology, LLC
|
// Gisselquist Technology, LLC
|
//
|
//
|
////////////////////////////////////////////////////////////////////////////////
|
////////////////////////////////////////////////////////////////////////////////
|
//
|
//
|
// Copyright (C) 2015-2016, Gisselquist Technology, LLC
|
// Copyright (C) 2015-2016, Gisselquist Technology, LLC
|
//
|
//
|
// This program is free software (firmware): you can redistribute it and/or
|
// This program is free software (firmware): you can redistribute it and/or
|
// modify it under the terms of the GNU General Public License as published
|
// modify it under the terms of the GNU General Public License as published
|
// by the Free Software Foundation, either version 3 of the License, or (at
|
// by the Free Software Foundation, either version 3 of the License, or (at
|
// your option) any later version.
|
// your option) any later version.
|
//
|
//
|
// This program is distributed in the hope that it will be useful, but WITHOUT
|
// This program is distributed in the hope that it will be useful, but WITHOUT
|
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
|
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
// for more details.
|
// for more details.
|
//
|
//
|
// You should have received a copy of the GNU General Public License along
|
// You should have received a copy of the GNU General Public License along
|
// with this program. (It's in the $(ROOT)/doc directory, run make with no
|
// with this program. (It's in the $(ROOT)/doc directory, run make with no
|
// target there if the PDF file isn't present.) If not, see
|
// target there if the PDF file isn't present.) If not, see
|
// <http://www.gnu.org/licenses/> for a copy.
|
// <http://www.gnu.org/licenses/> for a copy.
|
//
|
//
|
// License: GPL, v3, as defined and found on www.gnu.org,
|
// License: GPL, v3, as defined and found on www.gnu.org,
|
// http://www.gnu.org/licenses/gpl.html
|
// http://www.gnu.org/licenses/gpl.html
|
//
|
//
|
//
|
//
|
////////////////////////////////////////////////////////////////////////////////
|
////////////////////////////////////////////////////////////////////////////////
|
//
|
//
|
//
|
//
|
|
#include "zipcpu.h"
|
#include "zipsys.h"
|
#include "zipsys.h"
|
#include "artyboard.h"
|
#include "artyboard.h"
|
|
|
void entry(void) {
|
void main(int argc, char **argv) {
|
/*
|
/*
|
// Method one: direct polling
|
// Method one: direct polling
|
while(1) {
|
while(1) {
|
int ch;
|
int ch;
|
ch = sys->io_gps_rx;
|
ch = sys->io_gps_rx;
|
if ((ch&-256)==0)
|
if ((ch&UART_RX_ERR)==0)
|
sys->io_uart_tx = ch;
|
sys->io_uart_tx = ch;
|
}
|
}
|
*/
|
*/
|
|
|
// Method two: Waiting on interrupts
|
// Method two: Waiting on interrupts
|
zip->pic = SYSINT_GPSRX;
|
zip->z_pic = SYSINT_GPSRX;
|
while(1) {
|
while(1) {
|
while((zip->pic & SYSINT_GPSRX)==0)
|
while((zip->z_pic & SYSINT_GPSRX)==0)
|
;
|
;
|
sys->io_uart_tx = sys->io_gps_rx;
|
sys->io_uart_tx = sys->io_gps_rx;
|
zip->pic = SYSINT_GPSRX;
|
zip->z_pic = SYSINT_GPSRX;
|
}
|
}
|
|
|
/*
|
/*
|
// Method three: Use the DMA
|
// Method three: Use the DMA
|
zip->dma.ctrl = DMACLEAR;
|
zip->z_dma.d_ctrl = DMACLEAR;
|
while(1) {
|
while(1) {
|
zip->dma.rd = &sys->io_gps_rx;
|
zip->z_dma.d_rd = (int *)&sys->io_gps_rx;
|
zip->dma.wr = &sys->io_uart_tx;
|
zip->z_dma.d_wr = (int *)&sys->io_uart_tx;
|
zip->dma.len = 0x01000000; // More than we'll ever do ...
|
zip->z_dma.d_len = 0x01000000; // More than we'll ever do ...
|
zip->dma.ctrl = (DMAONEATATIME|DMA_CONSTDST|DMA_CONSTSRC|DMA_GPSRX);
|
zip->z_dma.d_ctrl = (DMAONEATATIME|DMA_CONSTDST|DMA_CONSTSRC|DMA_ONGPSRX);
|
// zip->dma.ctrl = (DMAONEATATIME|DMA_CONSTDST|DMA_CONSTSRC);
|
|
|
|
while(zip->dma.ctrl & 0x80000000)
|
while(zip->z_dma.d_ctrl & DMA_BUSY) {
|
if (zip->dma.ctrl & 0x40000000)
|
zip_idle();
|
zip_halt();;
|
if (zip->z_dma.d_ctrl & DMA_ERR)
|
|
zip_halt();
|
|
}
|
}
|
}
|
*/
|
*/
|
}
|
}
|
|
|
