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implemented set ir stuff
[my-code/pnx.git]
/
jtag.c
diff --git
a/jtag.c
b/jtag.c
index
2e8298c
..
9d05d5f
100644
(file)
--- a/
jtag.c
+++ b/
jtag.c
@@
-1,6
+1,7
@@
/*
* jtag.c - basic jtag stuff (good excercise!)
*
/*
* jtag.c - basic jtag stuff (good excercise!)
*
+ * build: gcc -Wall jtag.c -o jtag
* author: hackbard@hackdaworld.org
*
*/
* author: hackbard@hackdaworld.org
*
*/
@@
-164,12
+165,15
@@
int jtag_read_data(u8 *p,int bitlen) {
memset(p,0,bitlen+7/8);
count=0;
memset(p,0,bitlen+7/8);
count=0;
+ printf(" <- ");
while(bitlen) {
in=jtag_clock(0,0);
p[count/8]|=((in&1)<<(count%8));
while(bitlen) {
in=jtag_clock(0,0);
p[count/8]|=((in&1)<<(count%8));
+ printf("%d",p[count/8]&(1<<(count%8))?1:0);
count+=1;
bitlen-=1;
}
count+=1;
bitlen-=1;
}
+ printf("\n");
return 0;
return 0;
@@
-181,11
+185,14
@@
int jtag_write_data(u8 *p,int bitlen) {
count=0;
count=0;
+ printf(" -> ");
while(bitlen) {
while(bitlen) {
- jtag_clock(0,p[count/8]&(1<<count)?1:0);
+ jtag_clock(0,p[count/8]&(1<<(count%8))?1:0);
+ printf("%d",p[count/8]&(1<<(count%8))?1:0);
bitlen-=1;
count+=1;
}
bitlen-=1;
count+=1;
}
+ printf("\n");
return 0;
return 0;
@@
-230,27
+237,31
@@
int jtag_chain_init(t_jtag *jtag) {
int jtag_set_ir(char *s,int bitlen) {
int jtag_set_ir(char *s,int bitlen) {
- u8 ir[MAXDEV*MAX
_IR_
LEN/8];
+ u8 ir[MAXDEV*MAX
IR
LEN/8];
int count;
int count;
- if(bit
en>=MAXDEV*MAX_IR_
LEN) {
+ if(bit
len>=MAXDEV*MAXIR
LEN) {
printf("instruction register too big!\n");
return -1;
}
printf("instruction register too big!\n");
return -1;
}
- memset(ir,0,MAXDEV*MAX_IR_LEN/8*sizeof(u8));
+ memset(ir,0,MAXDEV*MAXIRLEN/8*sizeof(u8));
+ count=0;
+ printf("set ir: ");
while(bitlen) {
while(bitlen) {
- ir[count/8]|=p[count] ... HIER WEITER ..;
+ if(s[count]=='1')
+ ir[count/8]|=(1<<(count%8));
+ printf("%d",ir[count/8]&(1<<(count%8))?1:0);
count+=1;
bitlen-=1;
}
count+=1;
bitlen-=1;
}
+ printf("\n");
jtag_enter_shift_ir();
jtag_enter_shift_ir();
-
- while(len--)
-
+ jtag_write_data(ir,count);
jtag_leave_shift_ir();
jtag_leave_shift_ir();
+
return 0;
}
return 0;
}
@@
-258,6
+269,7
@@
int jtag_set_ir(char *s,int bitlen) {
int main(int argc,char **argv) {
t_jtag jtag;
int main(int argc,char **argv) {
t_jtag jtag;
+ u8 io[256];
memset(&jtag,0,sizeof(t_jtag));
memset(&jtag,0,sizeof(t_jtag));
@@
-273,6
+285,12
@@
int main(int argc,char **argv) {
jtag_chain_init(&jtag);
printf("done\n\n");
jtag_chain_init(&jtag);
printf("done\n\n");
+ printf("testing some instructions ...\n\n");
+ jtag_set_ir("000001000001",12);
+ jtag_enter_shift_dr();
+ jtag_read_data(io,64);
+ jtag_leave_shift_dr();
+
return 0;
}
return 0;
}