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xianfeng |
/* cable_usbblaster.c - Altera USB Blaster driver for the Advanced JTAG Bridge
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Copyright (C) 2008 Nathan Yawn, nathan.yawn@opencores.org
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h> // for usleep()
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#include <stdlib.h> // for sleep()
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#include <arpa/inet.h> // for htons()
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#include <sys/time.h>
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#include <time.h>
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#ifdef __SUPPORT_FTDI_CABLES__
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#include <ftdi.h>
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#endif
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#include "usb.h" // libusb header
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#include "cable_common.h"
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#include "errcodes.h"
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#define debug(...) //fprintf(stderr, __VA_ARGS__ )
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// USB constants for the USB Blaster
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// Valid endpoints: 0x81, 0x02, 0x06, 0x88
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#define EP2 0x02
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#define EP1 0x81
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#define ALTERA_VID 0x09FB
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#define ALTERA_PID 0x6001
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//#define USB_TIMEOUT 500
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#define USB_TIMEOUT 10000
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// Bit meanings in the command byte sent to the USB-Blaster
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#define USBBLASTER_CMD_TCK 0x01
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#define USBBLASTER_CMD_TMS 0x02
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#define USBBLASTER_CMD_nCE 0x04 /* should be left low */
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#define USBBLASTER_CMD_nCS 0x08 /* must be set for byte-shift mode reads to work */
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#define USBBLASTER_CMD_TDI 0x10
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#define USBBLASTER_CMD_OE 0x20 /* appears necessary to set it to make everything work */
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#define USBBLASTER_CMD_READ 0x40
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#define USBBLASTER_CMD_BYTESHIFT 0x80
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static struct usb_device *usbblaster_device;
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static char *data_out_scratchpad = NULL;
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static int data_out_scratchpad_size = 0;
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static char *data_in_scratchpad = NULL;
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static int data_in_scratchpad_size = 0;
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#ifdef __SUPPORT_FTDI_CABLES__
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static struct ftdi_context ftdic;
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#endif
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///////////////////////////////////////////////////////////////////////////////
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/*-------------------------------------[ USB Blaster specific functions ]---*/
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/////////////////////////////////////////////////////////////////////////////
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static int usbblaster_start_interface(struct usb_dev_handle *xpcu)
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{
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// Need to send a VENDOR request OUT, request = GET_STATUS
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// Other parameters are ignored
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if(usb_control_msg(xpcu, (USB_ENDPOINT_OUT | USB_TYPE_VENDOR), USB_REQ_GET_STATUS,
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0, 0, NULL, 0, 1000)<0)
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{
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perror("usb_control_msg(start interface)");
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return APP_ERR_USB;
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}
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return APP_ERR_NONE;
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}
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static int usbblaster_read_firmware_version(struct usb_dev_handle *xpcu, uint16_t *buf)
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{
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if(usb_control_msg(xpcu, 0xC0, 0x90, 0, 3, (char*)buf, 2, USB_TIMEOUT)<0)
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{
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perror("usb_control_msg(0x90.0) (read_firmware_version)");
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return APP_ERR_USB;
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}
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// Swap endian
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*buf = htons(*buf);
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//*buf = (*buf << 8) | (*buf >> 8);
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return APP_ERR_NONE;
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}
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static int usbblaster_enumerate_bus(void)
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{
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int flag; // for USB bus scanning stop condition
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struct usb_bus *bus; // pointer on the USB bus
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// board detection
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usb_init();
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usb_find_busses();
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usb_find_devices();
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flag = 0;
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for (bus = usb_get_busses(); bus; bus = bus->next)
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{
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for (usbblaster_device = bus->devices; usbblaster_device; usbblaster_device = usbblaster_device->next)
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{
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if (usbblaster_device->descriptor.idVendor == ALTERA_VID &&
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usbblaster_device->descriptor.idProduct == ALTERA_PID)
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{
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flag = 1;
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fprintf(stderr, "Found Altera USB-Blaster\n");
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return APP_ERR_NONE;
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}
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}
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if (flag)
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break;
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}
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fprintf(stderr, "Failed to find USB-Blaster\n");
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return APP_ERR_CABLENOTFOUND;
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}
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int cable_usbblaster_init(){
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int err = APP_ERR_NONE;
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// Process to reset the usb blaster
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if(err |= usbblaster_enumerate_bus()) {
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return err;
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}
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usb_dev_handle *h_device = usb_open(usbblaster_device);
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if(h_device == NULL)
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{
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fprintf(stderr, "Init failed to open USB device for reset\n");
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return APP_ERR_USB;
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}
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if(usb_reset(h_device) != APP_ERR_NONE)
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fprintf(stderr, "Failed to reset USB Blaster\n");
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usb_close(h_device);
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// Wait for reset!!!
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sleep(1);
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// Do device initialization
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if(err |= usbblaster_enumerate_bus())
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return err;
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h_device = usb_open(usbblaster_device);
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if(h_device == NULL)
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{
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fprintf(stderr, "Init failed to open USB device for initialization\n");
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return APP_ERR_USB;
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}
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// set the configuration
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if (usb_set_configuration(h_device, usbblaster_device->config->bConfigurationValue))
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{
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usb_close(h_device);
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fprintf(stderr, "USB-reset failed to set configuration\n");
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return APP_ERR_NONE;
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}
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while (usb_claim_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber));
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//usb_clear_halt(h_device, EP1);
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//usb_clear_halt(h_device, EP2);
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// IMPORTANT: DO NOT SEND A REQUEST TYPE "CLASS" OR TYPE "RESERVED". This may stall the EP.
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// Some clones need this before they will start processing IN/OUT requests
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if(usbblaster_start_interface(h_device) != APP_ERR_NONE)
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fprintf(stderr, "Failed to start remote interface\n");
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uint16_t buf;
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if(err |= usbblaster_read_firmware_version(h_device, &buf))
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{
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usb_close(h_device);
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fprintf(stderr, "Failed to read firmware version\n");
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return err;
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}
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else
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{
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printf("firmware version = 0x%04X (%u)\n", buf, buf);
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}
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// USB blaster is expecting us to read 2 bytes, which are useless to us...
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char ret[2];
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int rv = usb_bulk_read(h_device, EP1, ret, 2, USB_TIMEOUT);
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if (rv < 0){ // But if we fail, who cares?
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fprintf(stderr, "\nWarning: Failed to read post-init bytes from the EP1 FIFO (%i):\n%s", rv, usb_strerror());
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}
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if (usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber)){
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usb_close(h_device);
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fprintf(stderr, "USB-out failed to release interface\n");
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return APP_ERR_USB;
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}
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usb_close(h_device);
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data_out_scratchpad = (char *) malloc(64);
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data_out_scratchpad_size = 64;
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data_in_scratchpad = (char *) malloc(64);
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data_in_scratchpad_size = 64;
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return APP_ERR_NONE;
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}
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int cable_usbblaster_out(uint8_t value)
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{
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int rv; // to catch return values of functions
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usb_dev_handle *h_device; // handle on the ubs device
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char out;
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int err = APP_ERR_NONE;
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// open the device
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h_device = usb_open(usbblaster_device);
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if (h_device == NULL){
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usb_close(h_device);
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fprintf(stderr, "USB-out failed to open device\n");
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return APP_ERR_USB;
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}
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// set the configuration
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if (usb_set_configuration(h_device, usbblaster_device->config->bConfigurationValue))
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{
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usb_close(h_device);
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fprintf(stderr, "USB-out failed to set configuration\n");
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return APP_ERR_USB;
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}
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// wait until device is ready
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while (usb_claim_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber));
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out = (USBBLASTER_CMD_OE | USBBLASTER_CMD_nCS); // Set output enable (appears necessary) and nCS (necessary for byte-shift reads)
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// Translate to USB blaster protocol
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// USB-Blaster has no TRST pin
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if(value & TCLK_BIT)
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out |= USBBLASTER_CMD_TCK;
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if(value & TDI_BIT)
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out |= USBBLASTER_CMD_TDI;
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if(value & TMS_BIT)
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out |= USBBLASTER_CMD_TMS;
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rv = usb_bulk_write(h_device, EP2, &out, 1, USB_TIMEOUT);
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if (rv != 1){
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fprintf(stderr, "\nFailed to write to the FIFO (rv = %d):\n%s", rv, usb_strerror());
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err |= APP_ERR_USB;
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}
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// release the interface cleanly
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if (usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber)){
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fprintf(stderr, "Warning: failed to release usb interface after write\n");
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err |= APP_ERR_USB;
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}
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// close the device
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usb_close(h_device);
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return err;
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}
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int cable_usbblaster_inout(uint8_t value, uint8_t *in_bit)
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{
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int rv; // to catch return values of functions
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usb_dev_handle *h_device; // handle on the usb device
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char ret[3] = {0,0,0}; // Two useless bytes (0x31,0x60) always precede the useful byte
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char out;
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out = (USBBLASTER_CMD_OE | USBBLASTER_CMD_nCS); // Set output enable (?) and nCS (necessary for byte-shift reads)
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out |= USBBLASTER_CMD_READ;
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// Translate to USB blaster protocol
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// USB-Blaster has no TRST pin
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if(value & TCLK_BIT)
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out |= USBBLASTER_CMD_TCK;
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if(value & TDI_BIT)
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out |= USBBLASTER_CMD_TDI;
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if(value & TMS_BIT)
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out |= USBBLASTER_CMD_TMS;
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// open the device
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h_device = usb_open(usbblaster_device);
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if (h_device == NULL){
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return APP_ERR_USB;
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}
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// set the configuration
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if (usb_set_configuration(h_device, usbblaster_device->config->bConfigurationValue)){
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usb_close(h_device);
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return APP_ERR_USB;
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}
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// wait until device is ready
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while (usb_claim_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber));
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// Send a read request
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rv = usb_bulk_write(h_device, EP2, &out, 1, USB_TIMEOUT);
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if (rv != 1){
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fprintf(stderr, "\nFailed to write a read request to the EP2 FIFO:\n%s", usb_strerror());
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usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber);
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usb_close(h_device);
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return APP_ERR_USB;
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}
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// receive the response
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// Sometimes, we do a read but just get the useless 0x31,0x60 chars...
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// retry until we get a 3rd byte (with real data), for a reasonable number of retries.
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int retries = 0;
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do {
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rv = usb_bulk_read(h_device, EP1, ret, 3, USB_TIMEOUT);
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if (rv < 0){
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fprintf(stderr, "\nFailed to read from the EP1 FIFO (%i):\n%s", rv, usb_strerror());
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usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber);
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usb_close(h_device);
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return APP_ERR_USB;
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}
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// fprintf(stderr, "Read %i bytes: 0x%X, 0x%X, 0x%X\n", rv, ret[0], ret[1], ret[2]);
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retries++;
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}
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349 |
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while((rv < 3) && (retries < 20));
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351 |
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// release the interface cleanly
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353 |
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if (usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber)){
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354 |
|
|
fprintf(stderr, "Warning: failed to release USB interface after read\n");
|
355 |
|
|
usb_close(h_device);
|
356 |
|
|
return APP_ERR_USB;
|
357 |
|
|
}
|
358 |
|
|
|
359 |
|
|
// close the device
|
360 |
|
|
usb_close(h_device);
|
361 |
|
|
|
362 |
|
|
*in_bit = (ret[2] & 0x01); /* TDO is bit 0. USB-Blaster may also set bit 1. */
|
363 |
|
|
return APP_ERR_NONE;
|
364 |
|
|
}
|
365 |
|
|
|
366 |
|
|
|
367 |
|
|
// The usbblaster transfers the bits in the stream in the following order:
|
368 |
|
|
// bit 0 of the first byte received ... bit 7 of the first byte received
|
369 |
|
|
// bit 0 of second byte received ... etc.
|
370 |
|
|
int cable_usbblaster_write_stream(uint32_t *stream, int len_bits, int set_last_bit) {
|
371 |
|
|
int rv; // to catch return values of functions
|
372 |
|
|
usb_dev_handle *h_device; // handle on the ubs device
|
373 |
|
|
unsigned int bytes_to_transfer, leftover_bit_length;
|
374 |
|
|
uint32_t leftover_bits;
|
375 |
|
|
unsigned char i;
|
376 |
|
|
int err = APP_ERR_NONE;
|
377 |
|
|
|
378 |
|
|
//printf("cable_usbblaster_write_stream(0x%X, %d, %i)\n", stream, len, set_last_bit);
|
379 |
|
|
|
380 |
|
|
// This routine must transfer at least 8 bits. Additionally, TMS (the last bit)
|
381 |
|
|
// cannot be set by 'byte shift mode'. So we need at least 8 bits to transfer,
|
382 |
|
|
// plus one bit to send along with TMS.
|
383 |
|
|
bytes_to_transfer = len_bits / 8;
|
384 |
|
|
leftover_bit_length = len_bits - (bytes_to_transfer * 8);
|
385 |
|
|
|
386 |
|
|
if((!leftover_bit_length) && set_last_bit) {
|
387 |
|
|
bytes_to_transfer -= 1;
|
388 |
|
|
leftover_bit_length += 8;
|
389 |
|
|
}
|
390 |
|
|
|
391 |
|
|
//printf("bytes_to_transfer: %d. leftover_bit_length: %d\n", bytes_to_transfer, leftover_bit_length);
|
392 |
|
|
|
393 |
|
|
// Not enough bits for high-speed transfer. bit-bang.
|
394 |
|
|
if(bytes_to_transfer == 0) {
|
395 |
|
|
return cable_common_write_stream(stream, len_bits, set_last_bit);
|
396 |
|
|
}
|
397 |
|
|
|
398 |
|
|
// Bitbang functions leave clock high. USBBlaster assumes clock low at the start of a burst.
|
399 |
|
|
// Lower the clock.
|
400 |
|
|
err |= cable_usbblaster_out(0);
|
401 |
|
|
|
402 |
|
|
// Set leftover bits
|
403 |
|
|
leftover_bits = (stream[bytes_to_transfer>>2] >> ((bytes_to_transfer & 0x3) * 8)) & 0xFF;
|
404 |
|
|
|
405 |
|
|
//printf("leftover_bits: 0x%X, LSB_first_xfer = %d\n", leftover_bits, LSB_first_xfer);
|
406 |
|
|
|
407 |
|
|
// open the device
|
408 |
|
|
h_device = usb_open(usbblaster_device);
|
409 |
|
|
if (h_device == NULL){
|
410 |
|
|
usb_close(h_device);
|
411 |
|
|
fprintf(stderr, "USBBlaster_write_stream failed to open device\n");
|
412 |
|
|
return APP_ERR_USB;
|
413 |
|
|
}
|
414 |
|
|
|
415 |
|
|
// set the configuration
|
416 |
|
|
if (usb_set_configuration(h_device, usbblaster_device->config->bConfigurationValue))
|
417 |
|
|
{
|
418 |
|
|
usb_close(h_device);
|
419 |
|
|
fprintf(stderr, "USBBlaster_write_stream failed to set configuration\n");
|
420 |
|
|
return APP_ERR_USB;
|
421 |
|
|
}
|
422 |
|
|
|
423 |
|
|
// wait until device is ready
|
424 |
|
|
while (usb_claim_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber));
|
425 |
|
|
|
426 |
|
|
|
427 |
|
|
// Copy stream into out. Not pretty, but better than changing the interface to the upper layers;
|
428 |
|
|
// 32 bits are easier to work with than 8 bits in upper layers.
|
429 |
|
|
if(data_out_scratchpad_size < (bytes_to_transfer+1)) {
|
430 |
|
|
free(data_out_scratchpad);
|
431 |
|
|
data_out_scratchpad = (char *) malloc(bytes_to_transfer+1); // free/malloc instead of realloc will save copy time
|
432 |
|
|
if(data_out_scratchpad == NULL) {
|
433 |
|
|
usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber);
|
434 |
|
|
usb_close(h_device);
|
435 |
|
|
return APP_ERR_MALLOC;
|
436 |
|
|
}
|
437 |
|
|
data_out_scratchpad_size = bytes_to_transfer+1;
|
438 |
|
|
}
|
439 |
|
|
|
440 |
|
|
data_out_scratchpad[0] = USBBLASTER_CMD_BYTESHIFT | (bytes_to_transfer & 0x3F);
|
441 |
|
|
for(i = 0; i < bytes_to_transfer; i++) {
|
442 |
|
|
data_out_scratchpad[i+1] = (stream[i>>2] >> (8*(i&0x3))) & 0xFF;
|
443 |
|
|
}
|
444 |
|
|
|
445 |
|
|
|
446 |
|
|
/*
|
447 |
|
|
printf("Data packet: ");
|
448 |
|
|
for(i = 0; i <= bytes_to_transfer; i++)
|
449 |
|
|
printf("0x%X ", out[i]);
|
450 |
|
|
printf("\n");
|
451 |
|
|
*/
|
452 |
|
|
|
453 |
|
|
rv = usb_bulk_write(h_device, EP2, data_out_scratchpad, bytes_to_transfer+1, USB_TIMEOUT);
|
454 |
|
|
if (rv != (bytes_to_transfer+1)){
|
455 |
|
|
fprintf(stderr, "\nFailed to write to the FIFO (rv = %d):\n%s", rv, usb_strerror());
|
456 |
|
|
err |= APP_ERR_USB;
|
457 |
|
|
}
|
458 |
|
|
|
459 |
|
|
// release the interface cleanly
|
460 |
|
|
if (usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber)){
|
461 |
|
|
fprintf(stderr, "Warning: failed to release usb interface after stream write\n");
|
462 |
|
|
}
|
463 |
|
|
|
464 |
|
|
// close the device
|
465 |
|
|
usb_close(h_device);
|
466 |
|
|
|
467 |
|
|
// if we have a number of bits not divisible by 8, or we need to set TMS...
|
468 |
|
|
if(leftover_bit_length != 0) {
|
469 |
|
|
//printf("Doing leftovers: (0x%X, %d, %d)\n", leftover_bits, leftover_bit_length, set_last_bit);
|
470 |
|
|
return cable_common_write_stream(&leftover_bits, leftover_bit_length, set_last_bit);
|
471 |
|
|
}
|
472 |
|
|
|
473 |
|
|
return err;
|
474 |
|
|
}
|
475 |
|
|
|
476 |
|
|
|
477 |
|
|
int cable_usbblaster_read_stream(uint32_t *outstream, uint32_t *instream, int len_bits, int set_last_bit) {
|
478 |
|
|
int rv; // to catch return values of functions
|
479 |
|
|
usb_dev_handle *h_device; // handle on the ubs device
|
480 |
|
|
unsigned int bytes_received = 0;
|
481 |
|
|
unsigned int bytes_to_transfer, leftover_bit_length;
|
482 |
|
|
uint32_t leftover_bits, leftovers_received = 0;
|
483 |
|
|
unsigned char i;
|
484 |
|
|
int retval = APP_ERR_NONE;
|
485 |
|
|
|
486 |
|
|
debug("cable_usbblaster_read_stream(0x%X, %d, %i)\n", outstream[0], len_bits, set_last_bit);
|
487 |
|
|
|
488 |
|
|
// This routine must transfer at least 8 bits. Additionally, TMS (the last bit)
|
489 |
|
|
// cannot be set by 'byte shift mode'. So we need at least 8 bits to transfer,
|
490 |
|
|
// plus one bit to send along with TMS.
|
491 |
|
|
bytes_to_transfer = len_bits / 8;
|
492 |
|
|
leftover_bit_length = len_bits - (bytes_to_transfer * 8);
|
493 |
|
|
|
494 |
|
|
if((!leftover_bit_length) && set_last_bit) {
|
495 |
|
|
bytes_to_transfer -= 1;
|
496 |
|
|
leftover_bit_length += 8;
|
497 |
|
|
}
|
498 |
|
|
|
499 |
|
|
//printf("RD bytes_to_transfer: %d. leftover_bit_length: %d\n", bytes_to_transfer, leftover_bit_length);
|
500 |
|
|
|
501 |
|
|
// Not enough bits for high-speed transfer. bit-bang.
|
502 |
|
|
if(bytes_to_transfer == 0) {
|
503 |
|
|
return cable_common_read_stream(outstream, instream, len_bits, set_last_bit);
|
504 |
|
|
//retval |= cable_common_read_stream(&leftover_bits, &leftovers_received, leftover_bit_length, set_last_bit);
|
505 |
|
|
}
|
506 |
|
|
|
507 |
|
|
// Bitbang functions leave clock high. USBBlaster assumes clock low at the start of a burst.
|
508 |
|
|
// Lower the clock.
|
509 |
|
|
retval |= cable_usbblaster_out(0);
|
510 |
|
|
|
511 |
|
|
// Zero the input, since we add new data by logical-OR
|
512 |
|
|
for(i = 0; i < (len_bits/32); i++)
|
513 |
|
|
instream[i] = 0;
|
514 |
|
|
if(len_bits % 32)
|
515 |
|
|
instream[i] = 0;
|
516 |
|
|
|
517 |
|
|
// Set leftover bits
|
518 |
|
|
leftover_bits = (outstream[bytes_to_transfer>>2] >> ((bytes_to_transfer & 0x3) * 8)) & 0xFF;
|
519 |
|
|
debug("leftover_bits: 0x%X\n", leftover_bits);
|
520 |
|
|
|
521 |
|
|
// open the device
|
522 |
|
|
h_device = usb_open(usbblaster_device);
|
523 |
|
|
if (h_device == NULL){
|
524 |
|
|
usb_close(h_device);
|
525 |
|
|
fprintf(stderr, "USBBlaster_read_stream failed to open device\n");
|
526 |
|
|
return APP_ERR_USB;
|
527 |
|
|
}
|
528 |
|
|
|
529 |
|
|
// set the configuration
|
530 |
|
|
if (usb_set_configuration(h_device, usbblaster_device->config->bConfigurationValue))
|
531 |
|
|
{
|
532 |
|
|
usb_close(h_device);
|
533 |
|
|
fprintf(stderr, "USBBlaster_read_stream failed to set configuration\n");
|
534 |
|
|
return APP_ERR_USB;
|
535 |
|
|
}
|
536 |
|
|
|
537 |
|
|
// wait until device is ready
|
538 |
|
|
while (usb_claim_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber));
|
539 |
|
|
|
540 |
|
|
|
541 |
|
|
|
542 |
|
|
// Copy stream into out. Not pretty, but better than changing the interface to the upper layers;
|
543 |
|
|
// 32 bits are easier to work with than 8 bits in upper layers.
|
544 |
|
|
if(data_out_scratchpad_size < (bytes_to_transfer+1)) {
|
545 |
|
|
free(data_out_scratchpad);
|
546 |
|
|
data_out_scratchpad = (char *) malloc(bytes_to_transfer+1); // free/malloc instead of realloc will save copy time
|
547 |
|
|
if(data_out_scratchpad == NULL) {
|
548 |
|
|
usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber);
|
549 |
|
|
usb_close(h_device);
|
550 |
|
|
return APP_ERR_MALLOC;
|
551 |
|
|
}
|
552 |
|
|
data_out_scratchpad_size = bytes_to_transfer+1;
|
553 |
|
|
}
|
554 |
|
|
|
555 |
|
|
data_out_scratchpad[0] = USBBLASTER_CMD_BYTESHIFT | USBBLASTER_CMD_READ | (bytes_to_transfer & 0x3F); // Set command byte
|
556 |
|
|
for(i = 0; i < bytes_to_transfer; i++) {
|
557 |
|
|
data_out_scratchpad[i+1] = (outstream[i>>2] >> (8*(i&0x3))) & 0xFF;
|
558 |
|
|
}
|
559 |
|
|
|
560 |
|
|
/*
|
561 |
|
|
debug("Data packet: ");
|
562 |
|
|
for(i = 0; i <= bytes_to_transfer; i++)
|
563 |
|
|
debug("0x%X ", data_out_scratchpad[i]);
|
564 |
|
|
debug("\n");
|
565 |
|
|
*/
|
566 |
|
|
|
567 |
|
|
rv = usb_bulk_write(h_device, EP2, data_out_scratchpad, bytes_to_transfer+1, USB_TIMEOUT);
|
568 |
|
|
if (rv != (bytes_to_transfer+1)){
|
569 |
|
|
fprintf(stderr, "\nFailed to write to the EP2 FIFO (rv = %d):\n%s", rv, usb_strerror());
|
570 |
|
|
usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber);
|
571 |
|
|
usb_close(h_device);
|
572 |
|
|
return APP_ERR_USB;
|
573 |
|
|
}
|
574 |
|
|
|
575 |
|
|
|
576 |
|
|
// Make sure we have a big-enough buffer to hold the incoming data
|
577 |
|
|
if(data_in_scratchpad_size < (bytes_to_transfer+2)) {
|
578 |
|
|
free(data_in_scratchpad);
|
579 |
|
|
data_in_scratchpad = (char *) malloc(bytes_to_transfer+2); // free/malloc instead of realloc will save copy time
|
580 |
|
|
if(data_in_scratchpad == NULL) {
|
581 |
|
|
usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber);
|
582 |
|
|
usb_close(h_device);
|
583 |
|
|
return APP_ERR_MALLOC;
|
584 |
|
|
}
|
585 |
|
|
data_in_scratchpad_size = (bytes_to_transfer+2);
|
586 |
|
|
}
|
587 |
|
|
|
588 |
|
|
// receive the response
|
589 |
|
|
// Sometimes, we do a read but just get the useless 0x31,0x60 chars...
|
590 |
|
|
// retry until we get at least 3 bytes (with real data), for a reasonable number of retries.
|
591 |
|
|
int retries = 0;
|
592 |
|
|
bytes_received = 0;
|
593 |
|
|
do {
|
594 |
|
|
rv = usb_bulk_read(h_device, EP1, data_in_scratchpad, (bytes_to_transfer-bytes_received)+2, USB_TIMEOUT);
|
595 |
|
|
if (rv < 0){
|
596 |
|
|
fprintf(stderr, "\nFailed to read stream from the EP1 FIFO (%i):\n%s", rv, usb_strerror());
|
597 |
|
|
usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber);
|
598 |
|
|
usb_close(h_device);
|
599 |
|
|
return APP_ERR_USB;
|
600 |
|
|
}
|
601 |
|
|
|
602 |
|
|
/*
|
603 |
|
|
debug("Read %i bytes: ", rv);
|
604 |
|
|
for(i = 0; i < rv; i++)
|
605 |
|
|
debug("0x%X ", data_in_scratchpad[i]);
|
606 |
|
|
debug("\n");
|
607 |
|
|
*/
|
608 |
|
|
|
609 |
|
|
if(rv > 2) retries = 0;
|
610 |
|
|
else retries++;
|
611 |
|
|
|
612 |
|
|
/* Put the received bytes into the return stream. */
|
613 |
|
|
for(i = 0; i < (rv-2); i++) {
|
614 |
|
|
// Do size/type promotion before shift. Must cast to unsigned, else the value may be
|
615 |
|
|
// sign-extended through the upper 16 bits of the uint32_t.
|
616 |
|
|
uint32_t tmp = (unsigned char) data_in_scratchpad[2+i];
|
617 |
|
|
instream[(bytes_received+i)>>2] |= (tmp << ((i & 0x3)*8));
|
618 |
|
|
}
|
619 |
|
|
|
620 |
|
|
bytes_received += (rv-2);
|
621 |
|
|
}
|
622 |
|
|
while((bytes_received < bytes_to_transfer) && (retries < 15));
|
623 |
|
|
|
624 |
|
|
|
625 |
|
|
// release the interface cleanly
|
626 |
|
|
if (usb_release_interface(h_device, usbblaster_device->config->interface->altsetting->bInterfaceNumber)){
|
627 |
|
|
fprintf(stderr, "Warning: failed to release usb interface after stream read\n");
|
628 |
|
|
}
|
629 |
|
|
|
630 |
|
|
// close the device
|
631 |
|
|
usb_close(h_device);
|
632 |
|
|
|
633 |
|
|
// if we have a number of bits not divisible by 8
|
634 |
|
|
if(leftover_bit_length != 0) {
|
635 |
|
|
debug("Doing leftovers: (0x%X, %d, %d)\n", leftover_bits, leftover_bit_length, set_last_bit);
|
636 |
|
|
retval |= cable_common_read_stream(&leftover_bits, &leftovers_received, leftover_bit_length, set_last_bit);
|
637 |
|
|
instream[bytes_to_transfer>>2] |= (leftovers_received & 0xFF) << (8*(bytes_to_transfer & 0x3));
|
638 |
|
|
}
|
639 |
|
|
|
640 |
|
|
return retval;
|
641 |
|
|
}
|
642 |
|
|
|
643 |
|
|
|
644 |
|
|
int cable_usbblaster_opt(int c, char *str)
|
645 |
|
|
{
|
646 |
|
|
fprintf(stderr, "Unknown parameter '%c'\n", c);
|
647 |
|
|
return APP_ERR_BAD_PARAM;
|
648 |
|
|
}
|
649 |
|
|
|
650 |
|
|
|
651 |
|
|
//
|
652 |
|
|
// libusb does not work with my 3C25, but it works with libfdti.
|
653 |
|
|
// Following code is ported from http://www.ixo.de/info/usb_jtag/
|
654 |
|
|
// ZXF, 2009-10-22
|
655 |
|
|
//
|
656 |
|
|
#ifdef __SUPPORT_FTDI_CABLES__
|
657 |
|
|
|
658 |
|
|
int usb_blaster_buf_write(uint8_t *buf, int size, uint32_t* bytes_written)
|
659 |
|
|
{
|
660 |
|
|
int retval;
|
661 |
|
|
|
662 |
|
|
debug("usb_blaster_buf_write %02X (%d)\n", buf[0], size);
|
663 |
|
|
|
664 |
|
|
if ((retval = ftdi_write_data(&ftdic, buf, size)) < 0) {
|
665 |
|
|
*bytes_written = 0;
|
666 |
|
|
printf("ftdi_write_data: %s\n", ftdi_get_error_string(&ftdic));
|
667 |
|
|
return -1;
|
668 |
|
|
} else {
|
669 |
|
|
*bytes_written = retval;
|
670 |
|
|
return 0;
|
671 |
|
|
}
|
672 |
|
|
}
|
673 |
|
|
|
674 |
|
|
int usb_blaster_buf_read(uint8_t* buf, int size, uint32_t* bytes_read)
|
675 |
|
|
{
|
676 |
|
|
int retval;
|
677 |
|
|
int timeout = 100;
|
678 |
|
|
*bytes_read = 0;
|
679 |
|
|
|
680 |
|
|
while ((*bytes_read < size) && timeout--) {
|
681 |
|
|
if ((retval = ftdi_read_data(&ftdic, buf + *bytes_read, size - *bytes_read)) < 0) {
|
682 |
|
|
*bytes_read = 0;
|
683 |
|
|
printf("ftdi_read_data: %s\n", ftdi_get_error_string(&ftdic));
|
684 |
|
|
return -1;
|
685 |
|
|
}
|
686 |
|
|
*bytes_read += retval;
|
687 |
|
|
}
|
688 |
|
|
|
689 |
|
|
debug("usb_blaster_buf_read %02X (%d)\n", buf[0], *bytes_read);
|
690 |
|
|
|
691 |
|
|
return 0;
|
692 |
|
|
}
|
693 |
|
|
|
694 |
|
|
/* The following code doesn't fully utilize the possibilities of the USB-Blaster. It
|
695 |
|
|
* writes one byte per JTAG pin state change at a time; it doesn't even try to buffer
|
696 |
|
|
* data up to the maximum packet size of 64 bytes.
|
697 |
|
|
*
|
698 |
|
|
* Actually, the USB-Blaster offers a byte-shift mode to transmit up to 504 data bits
|
699 |
|
|
* (bidirectional) in a single USB packet. A header byte has to be sent as the first
|
700 |
|
|
* byte in a packet with the following meaning:
|
701 |
|
|
*
|
702 |
|
|
* Bit 7 (0x80): Must be set to indicate byte-shift mode.
|
703 |
|
|
* Bit 6 (0x40): If set, the USB-Blaster will also read data, not just write.
|
704 |
|
|
* Bit 5..0: Define the number N of following bytes
|
705 |
|
|
*
|
706 |
|
|
* All N following bytes will then be clocked out serially on TDI. If Bit 6 was set,
|
707 |
|
|
* it will afterwards return N bytes with TDO data read while clocking out the TDI data.
|
708 |
|
|
* LSB of the first byte after the header byte will appear first on TDI.
|
709 |
|
|
*/
|
710 |
|
|
|
711 |
|
|
/* Simple bit banging mode:
|
712 |
|
|
*
|
713 |
|
|
* Bit 7 (0x80): Must be zero (see byte-shift mode above)
|
714 |
|
|
* Bit 6 (0x40): If set, you will receive a byte indicating the state of TDO in return.
|
715 |
|
|
* Bit 5 (0x20): Unknown; for now, set to one.
|
716 |
|
|
* Bit 4 (0x10): TDI Output.
|
717 |
|
|
* Bit 3 (0x08): Unknown; for now, set to one.
|
718 |
|
|
* Bit 2 (0x04): Unknown; for now, set to one.
|
719 |
|
|
* Bit 1 (0x02): TMS Output.
|
720 |
|
|
* Bit 0 (0x01): TCK Output.
|
721 |
|
|
*
|
722 |
|
|
* For transmitting a single data bit, you need to write two bytes. Up to 64 bytes can be
|
723 |
|
|
* combined in a single USB packet (but this is not done in the code below). It isn't
|
724 |
|
|
* possible to read a data without transmitting data.
|
725 |
|
|
*/
|
726 |
|
|
|
727 |
|
|
#define FTDI_TCK 0
|
728 |
|
|
#define FTDI_TMS 1
|
729 |
|
|
#define FTDI_TDI 4
|
730 |
|
|
#define FTDI_READ 6
|
731 |
|
|
#define FTDI_SHMODE 7
|
732 |
|
|
#define FTDI_OTHERS ((1<<2)|(1<<3)|(1<<5))
|
733 |
|
|
|
734 |
|
|
void usb_blaster_write(int tck, int tms, int tdi)
|
735 |
|
|
{
|
736 |
|
|
uint8_t buf[1];
|
737 |
|
|
uint32_t count;
|
738 |
|
|
|
739 |
|
|
debug("---- usb_blaster_write(%d,%d,%d)\n", tck,tms,tdi);
|
740 |
|
|
|
741 |
|
|
buf[0] = FTDI_OTHERS | (tck?(1<<FTDI_TCK):0) | (tms?(1<<FTDI_TMS):0) | (tdi?(1<<FTDI_TDI):0);
|
742 |
|
|
usb_blaster_buf_write(buf, 1, &count);
|
743 |
|
|
}
|
744 |
|
|
|
745 |
|
|
int usb_blaster_write_read(int tck, int tms, int tdi)
|
746 |
|
|
{
|
747 |
|
|
uint8_t buf[1];
|
748 |
|
|
uint32_t count;
|
749 |
|
|
|
750 |
|
|
debug("++++ usb_blaster_write_read(%d,%d,%d)\n", tck,tms,tdi);
|
751 |
|
|
|
752 |
|
|
buf[0] = FTDI_OTHERS | (tck?(1<<FTDI_TCK):0) | (tms?(1<<FTDI_TMS):0) | (tdi?(1<<FTDI_TDI):0) | (1<<FTDI_READ);
|
753 |
|
|
usb_blaster_buf_write(buf, 1, &count);
|
754 |
|
|
usb_blaster_buf_read(buf, 1, &count);
|
755 |
|
|
return (buf[0]&1);
|
756 |
|
|
}
|
757 |
|
|
|
758 |
|
|
int ftdi_usb_blaster_out(uint8_t value)
|
759 |
|
|
{
|
760 |
|
|
int tck = 0;
|
761 |
|
|
int tms = 0;
|
762 |
|
|
int tdi = 0;
|
763 |
|
|
|
764 |
|
|
// Translate to USB blaster protocol
|
765 |
|
|
// USB-Blaster has no TRST pin
|
766 |
|
|
if(value & TCLK_BIT)
|
767 |
|
|
tck = 1;
|
768 |
|
|
if(value & TDI_BIT)
|
769 |
|
|
tdi = 1;;
|
770 |
|
|
if(value & TMS_BIT)
|
771 |
|
|
tms = 1;
|
772 |
|
|
|
773 |
|
|
usb_blaster_write(tck, tms, tdi);
|
774 |
|
|
|
775 |
|
|
return 0;
|
776 |
|
|
}
|
777 |
|
|
|
778 |
|
|
int ftdi_usb_blaster_inout(uint8_t value, uint8_t *in_bit)
|
779 |
|
|
{
|
780 |
|
|
int tck = 0;
|
781 |
|
|
int tms = 0;
|
782 |
|
|
int tdi = 0;
|
783 |
|
|
|
784 |
|
|
// Translate to USB blaster protocol
|
785 |
|
|
// USB-Blaster has no TRST pin
|
786 |
|
|
if(value & TCLK_BIT)
|
787 |
|
|
tck = 1;
|
788 |
|
|
if(value & TDI_BIT)
|
789 |
|
|
tdi = 1;
|
790 |
|
|
if(value & TMS_BIT)
|
791 |
|
|
tms = 1;
|
792 |
|
|
|
793 |
|
|
*in_bit = usb_blaster_write_read(tck, tms, tdi);
|
794 |
|
|
|
795 |
|
|
return 0;
|
796 |
|
|
}
|
797 |
|
|
|
798 |
|
|
int usb_blaster_speed(int speed)
|
799 |
|
|
{
|
800 |
|
|
if(ftdi_set_baudrate(&ftdic, speed)<0) {
|
801 |
|
|
printf("Can't set baud rate to max: %s\n", ftdi_get_error_string(&ftdic));
|
802 |
|
|
return -1;
|
803 |
|
|
}
|
804 |
|
|
|
805 |
|
|
return 0;
|
806 |
|
|
}
|
807 |
|
|
|
808 |
|
|
int ftdi_usb_blaster_init(void)
|
809 |
|
|
{
|
810 |
|
|
uint8_t latency_timer;
|
811 |
|
|
int speed = 300000;
|
812 |
|
|
|
813 |
|
|
printf("'usb_blaster' interface using libftdi.\n");
|
814 |
|
|
printf("Ported by Xianfeng (xianfeng.zeng@gmail.com), 2009\n");
|
815 |
|
|
|
816 |
|
|
if (ftdi_init(&ftdic) < 0) {
|
817 |
|
|
printf("ftdi_init failed!");
|
818 |
|
|
return -1;
|
819 |
|
|
}
|
820 |
|
|
|
821 |
|
|
/* context, vendor id, product id */
|
822 |
|
|
if (ftdi_usb_open(&ftdic, ALTERA_VID, ALTERA_PID) < 0) {
|
823 |
|
|
printf("unable to open ftdi device: %s\n", ftdic.error_str);
|
824 |
|
|
return -1;
|
825 |
|
|
}
|
826 |
|
|
|
827 |
|
|
if (ftdi_usb_reset(&ftdic) < 0) {
|
828 |
|
|
printf("unable to reset ftdi device\n");
|
829 |
|
|
return -1;
|
830 |
|
|
}
|
831 |
|
|
|
832 |
|
|
if (ftdi_set_latency_timer(&ftdic, 2) < 0) {
|
833 |
|
|
printf("unable to set latency timer\n");
|
834 |
|
|
return -1;
|
835 |
|
|
}
|
836 |
|
|
|
837 |
|
|
if (ftdi_get_latency_timer(&ftdic, &latency_timer) < 0) {
|
838 |
|
|
printf("unable to get latency timer\n");
|
839 |
|
|
return -1;
|
840 |
|
|
} else {
|
841 |
|
|
printf("current latency timer: %i\n", latency_timer);
|
842 |
|
|
}
|
843 |
|
|
|
844 |
|
|
ftdi_disable_bitbang(&ftdic);
|
845 |
|
|
|
846 |
|
|
printf("Baudrate:%d\n", speed);
|
847 |
|
|
usb_blaster_speed(speed);
|
848 |
|
|
|
849 |
|
|
return 0;
|
850 |
|
|
}
|
851 |
|
|
|
852 |
|
|
int ftdi_usb_blaster_quit(void)
|
853 |
|
|
{
|
854 |
|
|
ftdi_usb_close(&ftdic);
|
855 |
|
|
ftdi_deinit(&ftdic);
|
856 |
|
|
|
857 |
|
|
return 0;
|
858 |
|
|
}
|
859 |
|
|
#endif
|
860 |
|
|
|