fpga
/
platformusb-driver
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

add the possibility to monitor the JTAG state machine

master
michael 18 years ago
parent
1830118e81
commit
0a060ead2d
4 changed files with 215 additions and 4 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 8
      Makefile
  2. 4
      jtagkey.c
  3. 206
      jtagmon.c
  4. 1
      jtagmon.h

8
Makefile
View File

@ -12,11 +12,11 @@ SOBJECTS=libusb-driver.so libusb-driver-DEBUG.so
all: $(SOBJECTS)
libusb-driver.so: usb-driver.c parport.c jtagkey.c config.c usb-driver.h parport.h jtagkey.h config.h Makefile
gcc $(CFLAGS) usb-driver.c parport.c config.c $(JTAGKEYSRC) -o $@ -ldl -lusb -lpthread $(FTDI) -shared
libusb-driver.so: usb-driver.c parport.c jtagkey.c config.c jtagmon.c usb-driver.h parport.h jtagkey.h config.h jtagmon.h Makefile
gcc $(CFLAGS) usb-driver.c parport.c config.c jtagmon.c $(JTAGKEYSRC) -o $@ -ldl -lusb -lpthread $(FTDI) -shared
libusb-driver-DEBUG.so: usb-driver.c parport.c jtagkey.c config.c usb-driver.h parport.h jtagkey.h config.h Makefile
gcc -DDEBUG $(CFLAGS) usb-driver.c parport.c config.c $(JTAGKEYSRC) -o $@ -ldl -lusb -lpthread $(FTDI) -shared
libusb-driver-DEBUG.so: usb-driver.c parport.c jtagkey.c config.c jtagmon.c usb-driver.h parport.h jtagkey.h config.h jtagmon.h Makefile
gcc -DDEBUG $(CFLAGS) usb-driver.c parport.c config.c jtagmon.c $(JTAGKEYSRC) -o $@ -ldl -lusb -lpthread $(FTDI) -shared
clean:
rm -f $(SOBJECTS)

4
jtagkey.c
View File

@ -5,6 +5,7 @@
#include "usb-driver.h"
#include "config.h"
#include "jtagkey.h"
#include "jtagmon.h"
#define USBBUFSIZE 1048576
#define JTAG_SPEED 100000
@ -206,6 +207,9 @@ int jtagkey_transfer(WD_TRANSFER *tr, int fd, unsigned int request, int ppbase,
#ifdef DEBUG
if (tr[i].cmdTrans == 13)
DPRINTF("write byte: %d\n", val);
if (tr[i].cmdTrans == 13)
tapmon(val & PP_TCK, val & PP_TMS);
#endif
/* Pad writebuf for read-commands in stream */

206
jtagmon.c
View File

@ -0,0 +1,206 @@
#include <string.h>
#include <stdio.h>
#include "jtagmon.h"
enum tap_states {
TEST_LOGIC_RESET,
RUN_TEST_IDLE,
SELECT_DR,
CAPTURE_DR,
SHIFT_DR,
EXIT1_DR,
PAUSE_DR,
EXIT2_DR,
UPDATE_DR,
SELECT_IR,
CAPTURE_IR,
SHIFT_IR,
EXIT1_IR,
PAUSE_IR,
EXIT2_IR,
UPDATE_IR
};
void tapmon(unsigned char tck, unsigned char tms) {
static unsigned char last_tck = 1;
static int state = TEST_LOGIC_RESET;
static char state_text[32] = "Test Logic Reset";
char last_state_text[32];
int last_state = state;
strcpy(last_state_text, state_text);
if (!last_tck && tck) {
switch(state) {
case TEST_LOGIC_RESET:
if (tms) {
state = TEST_LOGIC_RESET;
} else {
state = RUN_TEST_IDLE;
}
break;
case RUN_TEST_IDLE:
if (tms) {
state = SELECT_DR;
} else {
state = RUN_TEST_IDLE;
}
break;
case SELECT_DR:
if (tms) {
state = SELECT_IR;
} else {
state = CAPTURE_DR;
}
break;
case CAPTURE_DR:
if (tms) {
state = EXIT1_DR;
} else {
state = SHIFT_DR;
}
break;
case SHIFT_DR:
if (tms) {
state = EXIT1_DR;
} else {
state = SHIFT_DR;
}
break;
case EXIT1_DR:
if (tms) {
state = UPDATE_DR;
} else {
state = PAUSE_DR;
}
break;
case PAUSE_DR:
if (tms) {
state = EXIT2_DR;
} else {
state = PAUSE_DR;
}
break;
case EXIT2_DR:
if (tms) {
state = UPDATE_DR;
} else {
state = SHIFT_DR;
}
break;
case UPDATE_DR:
if (tms) {
state = SELECT_DR;
} else {
state = RUN_TEST_IDLE;
}
break;
case SELECT_IR:
if (tms) {
state = TEST_LOGIC_RESET;
} else {
state = CAPTURE_IR;
}
break;
case CAPTURE_IR:
if (tms) {
state = EXIT1_IR;
} else {
state = SHIFT_IR;
}
break;
case SHIFT_IR:
if (tms) {
state = EXIT1_IR;
} else {
state = SHIFT_IR;
}
break;
case EXIT1_IR:
if (tms) {
state = UPDATE_IR;
} else {
state = PAUSE_IR;
}
break;
case PAUSE_IR:
if (tms) {
state = EXIT2_IR;
} else {
state = PAUSE_IR;
}
break;
case EXIT2_IR:
if (tms) {
state = UPDATE_IR;
} else {
state = SHIFT_IR;
}
break;
case UPDATE_IR:
if (tms) {
state = SELECT_DR;
} else {
state = RUN_TEST_IDLE;
}
break;
}
switch(state) {
case TEST_LOGIC_RESET:
strcpy(state_text, "Test Logic Reset");
break;
case RUN_TEST_IDLE:
strcpy(state_text, "Run-Test / Idle");
break;
case SELECT_DR:
strcpy(state_text, "Select-DR");
break;
case CAPTURE_DR:
strcpy(state_text, "Capture-DR");
break;
case SHIFT_DR:
strcpy(state_text, "Shift-DR");
break;
case EXIT1_DR:
strcpy(state_text, "Exit1-DR");
break;
case PAUSE_DR:
strcpy(state_text, "Pause-DR");
break;
case EXIT2_DR:
strcpy(state_text, "Exit2-DR");
break;
case UPDATE_DR:
strcpy(state_text, "Update-DR");
break;
case SELECT_IR:
strcpy(state_text, "Select-IR");
break;
case CAPTURE_IR:
strcpy(state_text, "Capture-IR");
break;
case SHIFT_IR:
strcpy(state_text, "Shift-IR");
break;
case EXIT1_IR:
strcpy(state_text, "Exit1-IR");
break;
case PAUSE_IR:
strcpy(state_text, "Pause-IR");
break;
case EXIT2_IR:
strcpy(state_text, "Exit2-IR");
break;
case UPDATE_IR:
strcpy(state_text, "Update-IR");
break;
}
if (last_state != state) {
fprintf(stderr,"TAP state transition from %s to %s\n", last_state_text, state_text);
}
}
last_tck = tck;
}

1
jtagmon.h
View File

@ -0,0 +1 @@
void tapmon(unsigned char tck, unsigned char tms);
Write Preview
Loading…
Cancel
Save