avr_jtag: src/jtag.c annotate

annotate src/jtag.c @ 8:074e860d7d31

jtagdev is a desktop client to communicate with jtag device through Arduino.

author	Thinker K.F. Li <thinker@branda.to>
date	Sun, 22 Feb 2009 22:30:20 +0800
parents	61f27549de57
children	cc106f278d7d

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
7 61f27549de57 Support TRST. Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	33 void jtag_trst(void) {
61f27549de57 Support TRST. Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	34 SEND_BIT(JTAG_TRST, 1);
61f27549de57 Support TRST. Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	35 TCK_LO();
61f27549de57 Support TRST. Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	36 pin_lo(JTAG_PORT, JTAG_TRST);
61f27549de57 Support TRST. Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	37 }
61f27549de57 Support TRST. Thinker K.F. Li <thinker@branda.to> parents: 5 diff changeset	38
5 eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	39 /*!
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	40 * Before shifting registers, TAP controller must move to last state before
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	41 * shift state. The state machine transite to shift state when shifting
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	42 * starts.
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	43 */
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	44 void jtag_tms(char *buf, int nbits) {
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	45 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	46 int nbytes, byte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	47 int byteoff, bitoff;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	48 int bit;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	50 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	51 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	52 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	53
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	54 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	55 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	56 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	57
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	58 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	59 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	60 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	61
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	62 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	63 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	64 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	65
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	66 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	67 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	68 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	69
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	70 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	71 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	72 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	73
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	74 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	75 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	76 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	77
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	78 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	79 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	80 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	81
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	82 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	83 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	84 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	85 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	86
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	87 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	88 nbits %= 8;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	89 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	90 bit = byte & (1 << i);
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	91 SEND_BIT(JTAG_TMS, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	92 TCK_LO();
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	93 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	94 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	95
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	96 void jtag_shift(char *buf, int nbits) {
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	97 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	98 int nbytes, byte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	99 int byteoff, bitoff;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	100 int bit;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	101
5 eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	102 /* Transite to shift state.
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	103 * \sa jtag_tms()
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	104 */
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	105 pin_lo(JTAG_PORT, JTAG_TMS);
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	106
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	107 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	108 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	109 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	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 & 0x01;
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	112 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	113 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	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 & 0x02;
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 & 0x04;
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 & 0x08;
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 bit = byte & 0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	128 SEND_BIT(JTAG_TDI, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	129 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	130
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	131 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	132 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	133 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	134
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	135 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	136 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	137 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	138
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	139 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	140 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	141 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	142 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	143
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	144 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	145 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	146 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	147 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	148 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	149 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	150 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	151 }
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	152 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	153 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	154
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	155 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	156 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	157 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	158 int tdo;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	159 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	160 int bit;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	161
5 eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	162 /* Transite to shift state.
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	163 * \sa jtag_tms()
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	164 */
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	165 pin_lo(JTAG_PORT, JTAG_TMS);
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	166
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	167 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	168 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	169 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	170 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	171
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	172 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	173 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	174 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	175 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	176 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	177 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	178 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	179 TCK_LO();
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	180
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	181 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	182 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	183 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	184 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	185 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	186 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	187 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	188 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	189
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	190 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	191 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	192 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	193 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	194 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	195 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	196 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	197 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	198
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	199 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	200 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	201 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	202 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	203 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	204 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	205 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	206 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	207
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	208 bit = byte & 0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	209 SEND_BIT(JTAG_TDI, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	210 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	211 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	212 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	213 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	214 obyte &= ~0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	215 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	216
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	217 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	218 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	219 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	220 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	221 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	222 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	223 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	224 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	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 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	227 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	228 tdo = GET_TDO();
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	229 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	230 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	231 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	232 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	233 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	234
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	235 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	236 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	237 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	238 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	239 obyte \|= 0x80;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	240 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	241 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	242 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	243
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	244 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	245 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	246
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	247 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	248 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	249 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	250 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	251 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	252 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	253 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	254 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	255 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	256 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	257 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	258 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	259 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	260 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	261 obuf[i] = obyte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	262 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	263 }

Mercurial > avr_jtag

annotate src/jtag.c @ 8:074e860d7d31