| Line 11... |
Line 11... |
// Creator: Dan Gisselquist, Ph.D.
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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// Gisselquist Technology, LLC
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//
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//
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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//
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//
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// Copyright (C) 2015, Gisselquist Technology, LLC
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// Copyright (C) 2015-2016, Gisselquist Technology, LLC
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//
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//
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// This program is free software (firmware): you can redistribute it and/or
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or (at
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// by the Free Software Foundation, either version 3 of the License, or (at
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// your option) any later version.
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// your option) any later version.
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| Line 42... |
Line 42... |
#include <libusb.h>
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#include <libusb.h>
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|
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#include "llcomms.h"
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#include "llcomms.h"
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#include "usbi.h"
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#include "usbi.h"
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|
|
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const bool DEBUG = false;
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|
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// Walk us through the JTAG Chain:
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// Walk us through the JTAG Chain:
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// 5-1's to go to test/reset
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// 5-1's to go to test/reset
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// 0 to go to Run-Test/Idle
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// 0 to go to Run-Test/Idle
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// 1 to go to select-dr-scan
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// 1 to go to select-dr-scan
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// 1 to go to select-ir-scan
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// 1 to go to select-ir-scan
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| Line 289... |
Line 291... |
if (len > RCV_BUFMASK-avail)
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if (len > RCV_BUFMASK-avail)
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len = RCV_BUFMASK-avail;
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len = RCV_BUFMASK-avail;
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if (len > 26)
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if (len > 26)
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len = 26;
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len = 26;
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|
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// printf("USBI::RAW-READ(%d, was %d)\n", len, clen);
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if (DEBUG) printf("USBI::RAW-READ(%d, was %d)\n", len, clen);
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memcpy(m_txbuf, REQ_RX_BITS, REQ_RX_LEN);
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memcpy(m_txbuf, REQ_RX_BITS, REQ_RX_LEN);
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|
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// I have chased process hangs to this line, but have no more
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// I have chased process hangs to this line, but have no more
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// information than that somewhere within libusb_bulk_transfer,
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// information than that somewhere within libusb_bulk_transfer,
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// libusb_handle_events_completed,
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// libusb_handle_events_completed,
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| Line 304... |
Line 306... |
// Xess tools. I will note that, when a followup attempt is made
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// Xess tools. I will note that, when a followup attempt is made
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// to read from the device, previously unread data may still get dumped
|
// to read from the device, previously unread data may still get dumped
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// to it. Therefore, be careful to clear the device upon starting
|
// to it. Therefore, be careful to clear the device upon starting
|
// any process.
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// any process.
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//
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//
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// fprintf(stderr, "[");
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if(DEBUG) { printf("["); fflush(stdout); }
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int r = libusb_bulk_transfer(m_xula_usb_device, XESS_ENDPOINT_OUT,
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int r = libusb_bulk_transfer(m_xula_usb_device, XESS_ENDPOINT_OUT,
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(unsigned char *)m_txbuf, REQ_RX_LEN, &actual_length,
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(unsigned char *)m_txbuf, REQ_RX_LEN, &actual_length,
|
timeout_ms);
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timeout_ms);
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// fprintf(stderr, "]");
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if(DEBUG) { printf("]"); fflush(stdout); }
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|
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if ((r==0)&&(actual_length == REQ_RX_LEN)) {
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if ((r==0)&&(actual_length == REQ_RX_LEN)) {
|
} else if (r == -7) {
|
} else if (r == -7) {
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// Nothing to read in the timeout provided
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// Nothing to read in the timeout provided
|
// We'll have to request this data again ... later
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// We'll have to request this data again ... later
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| Line 327... |
Line 329... |
|
|
// Try to read back however many bytes we can
|
// Try to read back however many bytes we can
|
r = libusb_bulk_transfer(m_xula_usb_device, XESS_ENDPOINT_IN,
|
r = libusb_bulk_transfer(m_xula_usb_device, XESS_ENDPOINT_IN,
|
(unsigned char *)m_rxbuf, USB_PKTLEN, &actual_length, 0);
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(unsigned char *)m_rxbuf, USB_PKTLEN, &actual_length, 0);
|
if ((r==0)&&(actual_length > 0)) {
|
if ((r==0)&&(actual_length > 0)) {
|
/*
|
if (DEBUG) {
|
printf("RAW-READ() -> %d Read\n", actual_length);
|
printf("RAW-READ() -> %d Read\n", actual_length);
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for(int i=0; i<actual_length; i++)
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for(int i=0; i<actual_length; i++)
|
printf("%02x ", m_rxbuf[i] & 0x0ff);
|
printf("%02x ", m_rxbuf[i] & 0x0ff);
|
printf("\n");
|
printf("\n");
|
*/
|
}
|
push_fifo(m_rxbuf, actual_length);
|
push_fifo(m_rxbuf, actual_length);
|
} else if (r == -7) {
|
} else if (r == -7) {
|
// Nothing to read in the timeout provided
|
// Nothing to read in the timeout provided
|
// Return, adding nothing to our FIFO
|
// Return, adding nothing to our FIFO
|
} else {
|
} else {
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| Line 359... |
Line 361... |
char *sptr = buf;
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char *sptr = buf;
|
|
|
// printf("Pushing %d items onto FIFO (%d - %d)\n", len, m_rend, m_rbeg);
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// printf("Pushing %d items onto FIFO (%d - %d)\n", len, m_rend, m_rbeg);
|
if (m_rbeg != m_rend)
|
if (m_rbeg != m_rend)
|
last = m_rbuf[m_rend];
|
last = m_rbuf[m_rend];
|
|
if (DEBUG)
|
|
printf("\tPushing:");
|
for(int i=0; i<len; i++) {
|
for(int i=0; i<len; i++) {
|
char v = *sptr++;
|
char v = *sptr++;
|
if (((v & 0x80)||((unsigned char)v < 0x10))&&(v == last)) {
|
if (((v & 0x80)||((unsigned char)v < 0x10))&&(v == last)) {
|
// printf("\tSkipping: %02x\n", v & 0x0ff);
|
// printf("\tSkipping: %02x\n", v & 0x0ff);
|
} else if ((unsigned char)v == 0x0ff) {
|
} else if ((unsigned char)v == 0x0ff) {
|
} else {
|
} else {
|
m_rbuf[m_rbeg] = v;
|
m_rbuf[m_rbeg] = v;
|
m_rbeg = (m_rbeg+1)&(RCV_BUFMASK);
|
m_rbeg = (m_rbeg+1)&(RCV_BUFMASK);
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// printf("\tPushing: %02x\n", v & 0x0ff);
|
if (DEBUG)
|
|
printf(" %02x", v & 0x0ff);
|
} last = v;
|
} last = v;
|
}
|
} if (DEBUG) printf("\n");
|
}
|
}
|
|
|
int USBI::pop_fifo(char *buf, int len) {
|
int USBI::pop_fifo(char *buf, int len) {
|
int avail = (m_rbeg - m_rend)&(RCV_BUFMASK);
|
int avail = (m_rbeg - m_rend)&(RCV_BUFMASK);
|
int left = len;
|
int left = len;
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| Line 391... |
Line 396... |
left -= ln;
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left -= ln;
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avail -= ln;
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avail -= ln;
|
m_rend = (m_rend + ln)&(RCV_BUFMASK);
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m_rend = (m_rend + ln)&(RCV_BUFMASK);
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nr += ln;
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nr += ln;
|
|
|
// printf("P:");
|
if (DEBUG) {
|
// for(int i=0; i<ln; i++)
|
printf("P:");
|
// printf("%02x ", buf[len-left-ln+i]);
|
for(int i=0; i<ln; i++)
|
} // printf("\n");
|
printf("%02x ", buf[len-left-ln+i]);
|
|
}
|
|
} if (DEBUG) printf("\n");
|
|
|
/*
|
/*
|
if (nr > 0)
|
if (nr > 0)
|
printf("\tPopped %d items, buf[0] = %02x (%d - %d)\n",
|
printf("\tPopped %d items, buf[0] = %02x (%d - %d)\n",
|
nr, buf[0], m_rend, m_rbeg);
|
nr, buf[0], m_rend, m_rbeg);
|
| Line 433... |
Line 440... |
|
|
// printf("USBI::poll() -> %s (%d avail)\n", (r)?"true":"false", avail);
|
// printf("USBI::poll() -> %s (%d avail)\n", (r)?"true":"false", avail);
|
return r;
|
return r;
|
}
|
}
|
|
|
No newline at end of file
|
No newline at end of file
|
|
int USBI::available(void) {
|
|
int avail = (m_rbeg-m_rend)&(RCV_BUFMASK);
|
|
|
|
if (avail > 1)
|
|
return avail;
|
|
else if ((avail == 1)&&((m_rbuf[m_rend]&0x80)||(m_rbuf[m_rend]<0x10)))
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
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No newline at end of file
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No newline at end of file
|
