avr_jtag: src/jtag.c annotate

annotate src/jtag.c @ 5:eb14cac68cbb

Transite TAP controller to shift state. - shift commands will transite state machine of TAP controller to shift state before starting shifting.

author	Thinker K.F. Li <thinker@branda.to>
date	Sun, 22 Feb 2009 13:55:50 +0800
parents	6b1594fb668f
children	61f27549de57

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
5 eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	33 /*!
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	34 * 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	35 * 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	36 * starts.
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	37 */
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38 void jtag_tms(char *buf, int nbits) {
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	39 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	40 int nbytes, byte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	41 int byteoff, bitoff;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	42 int bit;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	43
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	44 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	45 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	46 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	47
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	48 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	49 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	50 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	51
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	52 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	53 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	54 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	55
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	56 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	57 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	58 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	59
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	60 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	61 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	62 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	63
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	64 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	65 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	66 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	67
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	68 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	69 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	70 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	71
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	72 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	73 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	74 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	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 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	77 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	78 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	79 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	80
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	81 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	82 nbits %= 8;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	83 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	84 bit = byte & (1 << i);
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	85 SEND_BIT(JTAG_TMS, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	86 TCK_LO();
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	87 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	88 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	89
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	90 void jtag_shift(char *buf, int nbits) {
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	91 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	92 int nbytes, byte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	93 int byteoff, bitoff;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	94 int bit;
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	95
5 eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	96 /* Transite to shift state.
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	97 * \sa jtag_tms()
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	98 */
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	99 pin_lo(JTAG_PORT, JTAG_TMS);
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	100
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	101 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	102 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	103 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	104
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	105 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	106 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	107 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	108
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	109 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	110 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	111 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	112
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	113 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	114 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	115 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	116
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	117 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	118 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	119 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	120
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	121 bit = byte & 0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122 SEND_BIT(JTAG_TDI, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123 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	124
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	125 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	126 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	127 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	128
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	129 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	130 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	131 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	132
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	133 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	134 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	135 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	136 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	137
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	138 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	139 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	140 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	141 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	142 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	143 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	144 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	145 }
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	146 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	147 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	148
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	149 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	150 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	151 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	152 int tdo;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	153 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	154 int bit;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	155
5 eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	156 /* Transite to shift state.
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	157 * \sa jtag_tms()
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	158 */
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	159 pin_lo(JTAG_PORT, JTAG_TMS);
eb14cac68cbb Transite TAP controller to shift state. Thinker K.F. Li <thinker@branda.to> parents: 4 diff changeset	160
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	161 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	162 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	163 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	164 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	165
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	166 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	167 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	168 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	169 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	170 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	171 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	172 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	173 TCK_LO();
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	174
4 6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	175 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	176 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	177 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	178 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	179 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	180 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	181 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	182 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	183
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	184 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	185 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	186 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	187 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	188 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	189 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	190 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	191 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	192
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	193 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	194 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	195 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	196 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	197 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	198 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	199 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	200 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	201
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	202 bit = byte & 0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	203 SEND_BIT(JTAG_TDI, bit);
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	204 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	205 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	206 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	207 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	208 obyte &= ~0x10;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	209 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	210
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	211 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	212 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	213 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	214 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	215 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	216 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	217 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	218 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	219
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	220 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	221 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	222 tdo = GET_TDO();
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	223 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	224 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	225 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	226 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	227 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	228
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	229 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	230 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	231 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	232 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	233 obyte \|= 0x80;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	234 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	235 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	236 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	237
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	238 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	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
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	241 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	242 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	243 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	244 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	245 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	246 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	247 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	248 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	249 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	250 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	251 else
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	252 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	253 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	254 }
6b1594fb668f Improve performance of jtag.c and test it with Python scripts. Thinker K.F. Li <thinker@branda.to> parents: 2 diff changeset	255 obuf[i] = obyte;
2 abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	256 }
abf221bf3ce4 AVR JTAG server. Thinker K.F. Li <thinker@branda.to> parents: diff changeset	257 }

Mercurial > avr_jtag

annotate src/jtag.c @ 5:eb14cac68cbb