avr_jtag: src/jtag.c annotate

annotate src/jtag.c @ 4:6b1594fb668f

Improve performance of jtag.c and test it with Python scripts. - cp_tditdo.py send bits to TDI and hope it will feed back from TDO. - Expand loops in jtag.c to improve performance.

author	Thinker K.F. Li <thinker@branda.to>
date	Sun, 22 Feb 2009 12:54:45 +0800
parents	abf221bf3ce4
children	eb14cac68cbb

rev	line source
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	1 #include <stdio.h>
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	2 #include <util/delay.h>
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	3 #include "jtag.h"
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	4 #include "avriotools.h"
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	5
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	6 /* It is supposed to work at 1Mbps */
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	7 #define CLK_DELAY()
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	8
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	9 void jtag_init(void) {
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	10 pin_mode(&JTAG_PORT, JTAG_TCK, PM_OUTPUT);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	11 pin_mode(&JTAG_PORT, JTAG_TMS, PM_OUTPUT);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	12 pin_mode(&JTAG_PORT, JTAG_TDI, PM_OUTPUT);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	13 pin_mode(&JTAG_PORT, JTAG_TDO, PM_INPUT);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	14 pin_lo(JTAG_PORT, JTAG_TCK);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	15 pin_lo(JTAG_PORT, JTAG_TMS);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	16 pin_lo(JTAG_PORT, JTAG_TDI);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	17 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	18
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	19 #define TCK_LO() pin_lo(JTAG_PORT, JTAG_TCK)
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	20 #define TCK_HI() pin_hi(JTAG_PORT, JTAG_TCK)
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	21 #define SEND_BIT(pin, bit) \
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	22 do { \
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	23 if(bit) \
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	24 pin_hi(JTAG_PORT, pin); \
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	25 else \
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	26 pin_lo(JTAG_PORT, pin); \
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	27 CLK_DELAY(); \
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	28 TCK_HI(); \
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	29 CLK_DELAY(); \
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	30 } while(0)
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	31 #define GET_TDO() (JTAG_PIN & _BV(JTAG_TDO))
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	32
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	33 void jtag_tms(char *buf, int nbits) {
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	34 int i;
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	35 int nbytes, byte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	36 int byteoff, bitoff;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	37 int bit;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	39 nbytes = nbits / 8;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	40 for(i = 0; i < nbytes; i++) {
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	41 byte = buf[i];
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	42
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	43 bit = byte & 0x01;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	44 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	45 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	46
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	47 bit = byte & 0x02;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	48 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	49 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	50
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	51 bit = byte & 0x04;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	52 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	53 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	54
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	55 bit = byte & 0x08;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	56 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	57 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	58
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	59 bit = byte & 0x10;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	60 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	61 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	62
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	63 bit = byte & 0x20;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	64 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	65 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	66
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	67 bit = byte & 0x40;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	68 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	69 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	70
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	71 bit = byte & 0x80;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	72 SEND_BIT(JTAG_TMS, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	73 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	74 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	75
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	76 byte = buf[i];
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	77 nbits %= 8;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	78 for(i = 0; i < nbits; i++) {
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	79 bit = byte & (1 << i);
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	80 SEND_BIT(JTAG_TMS, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	81 TCK_LO();
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	82 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	83 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	84
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	85 void jtag_shift(char *buf, int nbits) {
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	86 int i;
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	87 int nbytes, byte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	88 int byteoff, bitoff;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	89 int bit;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	90
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	91 nbytes = nbits / 8;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	92 for(i = 0; i < nbytes; i++) {
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	93 byte = buf[i];
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	94
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	95 bit = byte & 0x01;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	96 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	97 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	98
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	99 bit = byte & 0x02;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	100 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	101 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	102
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	103 bit = byte & 0x04;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	104 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	105 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	106
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	107 bit = byte & 0x08;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	108 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	109 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	110
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	111 bit = byte & 0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	112 SEND_BIT(JTAG_TDI, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	113 TCK_LO();
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	114
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	115 bit = byte & 0x20;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	116 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	117 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	118
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	119 bit = byte & 0x40;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	120 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	121 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	122
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	123 bit = byte & 0x80;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	124 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	125 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	126 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	127
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	128 nbits %= 8;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	129 if(nbits) {
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	130 byte = buf[i];
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	131 for(i = 0; i < nbits; i++) {
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	132 bit = byte & (1 << i);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	133 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	134 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	135 }
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	136 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	137 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	138
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	139 void jtag_shift_inout(char ibuf, char obuf, int nbits) {
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	140 int i, j;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	141 int nbytes, byte, obyte;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	142 int tdo;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	143 int byteoff, bitoff;
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	144 int bit;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	145
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	146 nbytes = nbits / 8;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	147 for(i = 0; i < nbytes; i++) {
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	148 byte = ibuf[i];
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	149 obyte = 0;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	150
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	151 bit = byte & 0x01;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	152 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	153 tdo = GET_TDO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	154 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	155 obyte \|= 0x01;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	156 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	157 obyte &= ~0x01;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	158 TCK_LO();
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	159
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	160 bit = byte & 0x02;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	161 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	162 tdo = GET_TDO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	163 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	164 obyte \|= 0x02;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	165 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	166 obyte &= ~0x02;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	167 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	168
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	169 bit = byte & 0x04;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	170 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	171 tdo = GET_TDO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	172 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	173 obyte \|= 0x04;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	174 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	175 obyte &= ~0x04;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	176 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	177
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	178 bit = byte & 0x08;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	179 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	180 tdo = GET_TDO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	181 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	182 obyte \|= 0x08;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	183 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	184 obyte &= ~0x08;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	185 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	186
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	187 bit = byte & 0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	188 SEND_BIT(JTAG_TDI, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	189 tdo = GET_TDO();
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	190 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	191 obyte \|= 0x10;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	192 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	193 obyte &= ~0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	194 TCK_LO();
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	195
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	196 bit = byte & 0x20;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	197 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	198 tdo = GET_TDO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	199 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	200 obyte \|= 0x20;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	201 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	202 obyte &= ~0x20;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	203 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	204
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	205 bit = byte & 0x40;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	206 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	207 tdo = GET_TDO();
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	208 if(tdo)
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	209 obyte \|= 0x40;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	210 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	211 obyte &= ~0x40;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	212 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	213
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	214 bit = byte & 0x80;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	215 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	216 tdo = GET_TDO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	217 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	218 obyte \|= 0x80;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	219 else
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	220 obyte &= ~0x80;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	221 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	222
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	223 obuf[i] = obyte;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	224 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	225
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	226 nbits %= 8;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	227 if(nbits) {
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	228 byte = ibuf[i];
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	229 obyte = 0;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	230 for(j = 0; j < nbits; j++) {
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	231 bit = byte & (1 << j);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	232 SEND_BIT(JTAG_TDI, bit);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	233 tdo = GET_TDO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	234 if(tdo)
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	235 obyte \|= 1 << j;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	236 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	237 obyte &= ~(1 << j);
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	238 TCK_LO();
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	239 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	240 obuf[i] = obyte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	241 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	242 }

Mercurial > avr_jtag

annotate src/jtag.c @ 4:6b1594fb668f