Restored old Linux platform and added untested SWDP support.
This commit is contained in:
Gareth McMullin
parent
c8ef57a7b5
commit
5d747a52ce
|
|
@ -63,6 +63,7 @@ int adiv5_swdp_scan(void)
|
|||
swdptap_seq_out(0b10100101, 8);
|
||||
ack = swdptap_seq_in(3);
|
||||
if((ack != SWDP_ACK_OK) || swdptap_seq_in_parity(&dp->idcode, 32)) {
|
||||
DEBUG("\n");
|
||||
morse("NO TARGETS.", 1);
|
||||
free(dp);
|
||||
return -1;
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
LDFLAGS = -lftdi
|
||||
|
|
@ -0,0 +1,101 @@
|
|||
/*
|
||||
* This file is part of the Black Magic Debug project.
|
||||
*
|
||||
* Copyright (C) 2011 Black Sphere Technologies Ltd.
|
||||
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/* This file implements a transparent channel over which the GDB Remote
|
||||
* Serial Debugging protocol is implemented. This implementation for Linux
|
||||
* uses a TCP server on port 2000.
|
||||
*/
|
||||
#include <stdio.h>
|
||||
#include <sys/socket.h>
|
||||
#include <netinet/in.h>
|
||||
|
||||
#include <sys/select.h>
|
||||
|
||||
#include <assert.h>
|
||||
|
||||
#include "general.h"
|
||||
#include "gdb_if.h"
|
||||
|
||||
static int gdb_if_serv, gdb_if_conn;
|
||||
|
||||
int gdb_if_init(void)
|
||||
{
|
||||
struct sockaddr_in addr;
|
||||
|
||||
addr.sin_family = AF_INET;
|
||||
addr.sin_port = htons(2000);
|
||||
addr.sin_addr.s_addr = htonl(INADDR_ANY);
|
||||
|
||||
assert((gdb_if_serv = socket(PF_INET, SOCK_STREAM, 0)) != -1);
|
||||
assert(bind(gdb_if_serv, (void*)&addr, sizeof(addr)) != -1);
|
||||
assert(listen(gdb_if_serv, 1) != -1);
|
||||
|
||||
DEBUG("Listening on TCP:2000\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
unsigned char gdb_if_getchar(void)
|
||||
{
|
||||
unsigned char ret;
|
||||
int i = 0;
|
||||
|
||||
while(i <= 0) {
|
||||
if(gdb_if_conn <= 0) {
|
||||
gdb_if_conn = accept(gdb_if_serv, NULL, NULL);
|
||||
DEBUG("Got connection\n");
|
||||
}
|
||||
i = recv(gdb_if_conn, &ret, 1, 0);
|
||||
if(i <= 0) {
|
||||
gdb_if_conn = -1;
|
||||
DEBUG("Dropped broken connection\n");
|
||||
/* Return '+' in case we were waiting for an ACK */
|
||||
return '+';
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
unsigned char gdb_if_getchar_to(int timeout)
|
||||
{
|
||||
fd_set fds;
|
||||
struct timeval tv;
|
||||
|
||||
if(gdb_if_conn == -1) return -1;
|
||||
|
||||
tv.tv_sec = timeout / 1000;
|
||||
tv.tv_usec = (timeout % 1000) * 1000;
|
||||
|
||||
FD_ZERO(&fds);
|
||||
FD_SET(gdb_if_conn, &fds);
|
||||
|
||||
if(select(gdb_if_conn+1, &fds, NULL, NULL, &tv) > 0)
|
||||
return gdb_if_getchar();
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
void gdb_if_putchar(unsigned char c, int flush)
|
||||
{
|
||||
if(gdb_if_conn > 0)
|
||||
send(gdb_if_conn, &c, 1, 0);
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,255 @@
|
|||
/*
|
||||
* This file is part of the Black Magic Debug project.
|
||||
*
|
||||
* Copyright (C) 2008 Black Sphere Technologies Ltd.
|
||||
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/* Low level JTAG implementation using FT2232 with libftdi.
|
||||
*
|
||||
* Issues:
|
||||
* This code is old, rotten and unsupported.
|
||||
* Magic numbers everywhere.
|
||||
* Should share interface with swdptap.c or at least clean up...
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <assert.h>
|
||||
#include <alloca.h>
|
||||
|
||||
#include <ftdi.h>
|
||||
|
||||
#include "general.h"
|
||||
|
||||
#define PROVIDE_GENERIC_TAP_SEQ
|
||||
//#define PROVIDE_GENERIC_TAP_TMS_SEQ
|
||||
//#define PROVIDE_GENERIC_TAP_TDI_TDO_SEQ
|
||||
//#define PROVIDE_GENERIC_TAP_TDI_SEQ
|
||||
#include "jtagtap.h"
|
||||
|
||||
#define ALL_ZERO 0xA0
|
||||
#define TCK 0x01
|
||||
#define TDI 0x02
|
||||
#define TDO 0x04
|
||||
#define TMS 0x08
|
||||
#define nSRST 0x20
|
||||
|
||||
static struct ftdi_context ftdic;
|
||||
static int f;
|
||||
|
||||
#define BUF_SIZE 4096
|
||||
static uint8_t outbuf[BUF_SIZE];
|
||||
static uint16_t bufptr = 0;
|
||||
|
||||
static void buffer_flush(void)
|
||||
{
|
||||
assert(ftdi_write_data(&ftdic, outbuf, bufptr) == bufptr);
|
||||
// printf("FT2232 buffer flush: %d bytes\n", bufptr);
|
||||
bufptr = 0;
|
||||
}
|
||||
|
||||
static int buffer_write(const uint8_t *data, int size)
|
||||
{
|
||||
if((bufptr + size) / BUF_SIZE > 0) buffer_flush();
|
||||
memcpy(outbuf + bufptr, data, size);
|
||||
bufptr += size;
|
||||
return size;
|
||||
}
|
||||
|
||||
static int buffer_read(uint8_t *data, int size)
|
||||
{
|
||||
int index = 0;
|
||||
buffer_flush();
|
||||
while((index += ftdi_read_data(&ftdic, data + index, size-index)) != size);
|
||||
return size;
|
||||
}
|
||||
|
||||
|
||||
int jtagtap_init(void)
|
||||
{
|
||||
ftdi_init(&ftdic);
|
||||
ftdi_set_interface(&ftdic, INTERFACE_A);
|
||||
f = ftdi_usb_open(&ftdic, FT2232_VID, FT2232_PID);
|
||||
if(f < 0 && f != -5) {
|
||||
fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
|
||||
f, ftdi_get_error_string(&ftdic));
|
||||
return -1;
|
||||
}
|
||||
fprintf(stderr, "ftdi open succeeded(channel 1): %d\n",f);
|
||||
|
||||
ftdi_set_latency_timer(&ftdic, 1);
|
||||
ftdi_set_baudrate(&ftdic, 480000000);
|
||||
ftdi_usb_purge_buffers(&ftdic);
|
||||
|
||||
fprintf(stderr, "enabling bitbang mode(channel 1)\n");
|
||||
assert(ftdi_set_bitmode(&ftdic, 0xAB, BITMODE_MPSSE) == 0);
|
||||
assert(ftdi_write_data(&ftdic, "\x86\x00\x00\x80\xA8\xAB", 6) == 6);
|
||||
ftdi_write_data_set_chunksize(&ftdic, BUF_SIZE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void jtagtap_reset(void)
|
||||
{
|
||||
jtagtap_soft_reset();
|
||||
}
|
||||
|
||||
void jtagtap_srst(void)
|
||||
{
|
||||
buffer_flush();
|
||||
//ftdi_write_data(&ftdic, "\x80\x88\xAB", 3);
|
||||
//usleep(1000);
|
||||
//ftdi_write_data(&ftdic, "\x80\xA8\xAB", 3);
|
||||
}
|
||||
|
||||
#ifndef PROVIDE_GENERIC_TAP_TMS_SEQ
|
||||
void
|
||||
jtagtap_tms_seq(uint32_t MS, int ticks)
|
||||
{
|
||||
uint8_t tmp[3] = "\x4B";
|
||||
while(ticks >= 0) {
|
||||
//jtagtap_next(MS & 1, 1);
|
||||
tmp[1] = ticks<7?ticks-1:6;
|
||||
tmp[2] = 0x80 | (MS & 0x7F);
|
||||
|
||||
// assert(ftdi_write_data(&ftdic, tmp, 3) == 3);
|
||||
buffer_write(tmp, 3);
|
||||
MS >>= 7; ticks -= 7;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef PROVIDE_GENERIC_TAP_TDI_SEQ
|
||||
void
|
||||
jtagtap_tdi_seq(const uint8_t final_tms, const uint8_t *DI, int ticks)
|
||||
{
|
||||
char *tmp;
|
||||
int index = 0;
|
||||
int rticks;
|
||||
|
||||
if(!ticks) return;
|
||||
|
||||
if(final_tms) ticks--;
|
||||
rticks = ticks & 7;
|
||||
ticks >>= 3;
|
||||
tmp = alloca(ticks + 9);
|
||||
|
||||
if(ticks) {
|
||||
tmp[index++] = 0x19;
|
||||
tmp[index++] = ticks - 1;
|
||||
tmp[index++] = 0;
|
||||
while(ticks--) tmp[index++] = *DI++;
|
||||
}
|
||||
|
||||
if(rticks) {
|
||||
tmp[index++] = 0x1B;
|
||||
tmp[index++] = rticks - 1;
|
||||
tmp[index++] = *DI;
|
||||
}
|
||||
|
||||
if(final_tms) {
|
||||
tmp[index++] = 0x4B;
|
||||
tmp[index++] = 0;
|
||||
tmp[index++] = (*DI)>>rticks?0x81:0x01;
|
||||
}
|
||||
// assert(ftdi_write_data(&ftdic, tmp, index) == index);
|
||||
buffer_write(tmp, index);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef PROVIDE_GENERIC_TAP_TDI_TDO_SEQ
|
||||
void
|
||||
jtagtap_tdi_tdo_seq(uint8_t *DO, const uint8_t final_tms, const uint8_t *DI, int ticks)
|
||||
{
|
||||
uint8_t *tmp;
|
||||
int index = 0, rsize;
|
||||
int rticks;
|
||||
|
||||
if(!ticks) return;
|
||||
|
||||
// printf("ticks: %d\n", ticks);
|
||||
if(final_tms) ticks--;
|
||||
rticks = ticks & 7;
|
||||
ticks >>= 3;
|
||||
tmp = alloca(ticks + 9);
|
||||
rsize = ticks;
|
||||
if(ticks) {
|
||||
tmp[index++] = 0x39;
|
||||
tmp[index++] = ticks - 1;
|
||||
tmp[index++] = 0;
|
||||
while(ticks--) tmp[index++] = *DI++;
|
||||
}
|
||||
|
||||
if(rticks) {
|
||||
rsize++;
|
||||
tmp[index++] = 0x3B;
|
||||
tmp[index++] = rticks - 1;
|
||||
tmp[index++] = *DI;
|
||||
}
|
||||
|
||||
if(final_tms) {
|
||||
rsize++;
|
||||
tmp[index++] = 0x6B;
|
||||
tmp[index++] = 0;
|
||||
tmp[index++] = (*DI)>>rticks?0x81:0x01;
|
||||
}
|
||||
// assert(ftdi_write_data(&ftdic, tmp, index) == index);
|
||||
buffer_write(tmp, index);
|
||||
// index = 0;
|
||||
// while((index += ftdi_read_data(&ftdic, tmp + index, rsize-index)) != rsize);
|
||||
buffer_read(tmp, rsize);
|
||||
/*for(index = 0; index < rsize; index++)
|
||||
printf("%02X ", tmp[index]);
|
||||
printf("\n");*/
|
||||
index = 0;
|
||||
if(final_tms) rsize--;
|
||||
|
||||
while(rsize--) {
|
||||
/*if(rsize) printf("%02X ", tmp[index]);*/
|
||||
*DO++ = tmp[index++];
|
||||
}
|
||||
if(final_tms) {
|
||||
rticks++;
|
||||
*(--DO) >>= 1;
|
||||
*DO |= tmp[index] & 0x80;
|
||||
} else DO--;
|
||||
if(rticks) {
|
||||
*DO >>= (8-rticks);
|
||||
}
|
||||
/*printf("%02X\n", *DO);*/
|
||||
}
|
||||
#endif
|
||||
|
||||
uint8_t jtagtap_next(uint8_t dTMS, uint8_t dTDO)
|
||||
{
|
||||
uint8_t ret;
|
||||
uint8_t tmp[3] = "\x6B\x00\x00";
|
||||
tmp[2] = (dTDO?0x80:0) | (dTMS?0x01:0);
|
||||
// assert(ftdi_write_data(&ftdic, tmp, 3) == 3);
|
||||
// while(ftdi_read_data(&ftdic, &ret, 1) != 1);
|
||||
buffer_write(tmp, 3);
|
||||
buffer_read(&ret, 1);
|
||||
|
||||
ret &= 0x80;
|
||||
|
||||
// DEBUG("jtagtap_next(TMS = %d, TDO = %d) = %02X\n", dTMS, dTDO, ret);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
/*
|
||||
* This file is part of the Black Magic Debug project.
|
||||
*
|
||||
* Copyright (C) 2011 Black Sphere Technologies Ltd.
|
||||
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include "platform.h"
|
||||
|
||||
int platform_init(void) { return 0; }
|
||||
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
* This file is part of the Black Magic Debug project.
|
||||
*
|
||||
* Copyright (C) 2011 Black Sphere Technologies Ltd.
|
||||
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef __PLATFORM_H
|
||||
#define __PLATFORM_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#define FT2232_VID 0x0403
|
||||
#define FT2232_PID 0xbcd9
|
||||
|
||||
#define SET_RUN_STATE(state)
|
||||
#define SET_IDLE_STATE(state)
|
||||
#define SET_ERROR_STATE(state)
|
||||
|
||||
#define PLATFORM_FATAL_ERROR(error) abort()
|
||||
#define PLATFORM_SET_FATAL_ERROR_RECOVERY()
|
||||
|
||||
#define morse(x, y) do {} while(0)
|
||||
#define morse_msg 0
|
||||
|
||||
int platform_init(void);
|
||||
|
||||
#endif
|
||||
|
||||
|
|
@ -0,0 +1,182 @@
|
|||
/*
|
||||
* This file is part of the Black Magic Debug project.
|
||||
*
|
||||
* Copyright (C) 2011 Black Sphere Technologies Ltd.
|
||||
* Written by Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/* Quick hack for bit-banging SW-DP interface over FT2232.
|
||||
* Intended as proof of concept, not for production.
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <assert.h>
|
||||
#include <ftdi.h>
|
||||
|
||||
#include "platform.h"
|
||||
#include "swdptap.h"
|
||||
|
||||
static struct ftdi_context ftdic;
|
||||
static int f;
|
||||
|
||||
#define BUF_SIZE 4096
|
||||
|
||||
int swdptap_init(void)
|
||||
{
|
||||
ftdi_init(&ftdic);
|
||||
ftdi_set_interface(&ftdic, INTERFACE_A);
|
||||
f = ftdi_usb_open(&ftdic, FT2232_VID, FT2232_PID);
|
||||
if(f < 0 && f != -5) {
|
||||
fprintf(stderr, "unable to open ftdi device: %d (%s)\n",
|
||||
f, ftdi_get_error_string(&ftdic));
|
||||
return -1;
|
||||
}
|
||||
printf("ftdi open succeeded(channel 1): %d\n",f);
|
||||
|
||||
ftdi_set_latency_timer(&ftdic, 1);
|
||||
ftdi_set_baudrate(&ftdic, 10000000);
|
||||
ftdi_usb_purge_buffers(&ftdic);
|
||||
|
||||
printf("enabling bitbang mode(channel 1)\n");
|
||||
assert(ftdi_set_bitmode(&ftdic, 0xAB, BITMODE_BITBANG) == 0);
|
||||
//assert(ftdi_write_data(&ftdic, "\x86\x00\x00\x80\xA8\xAB", 6) == 6);
|
||||
ftdi_write_data(&ftdic, "\xAB\xA8", 2);
|
||||
ftdi_write_data_set_chunksize(&ftdic, BUF_SIZE);
|
||||
|
||||
/* This must be investigated in more detail.
|
||||
* As described in STM32 Reference Manual... */
|
||||
swdptap_reset();
|
||||
swdptap_seq_out(0xE79E, 16); /* 0b0111100111100111 */
|
||||
swdptap_reset();
|
||||
swdptap_seq_out(0, 16);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void swdptap_reset(void)
|
||||
{
|
||||
swdptap_turnaround(0);
|
||||
/* 50 clocks with TMS high */
|
||||
for(int i = 0; i < 50; i++) swdptap_bit_out(1);
|
||||
}
|
||||
|
||||
void swdptap_turnaround(uint8_t dir)
|
||||
{
|
||||
static uint8_t olddir = 0;
|
||||
|
||||
DEBUG("%s", dir ? "\n-> ":"\n<- ");
|
||||
|
||||
if(dir == olddir) return;
|
||||
olddir = dir;
|
||||
|
||||
if(dir) /* SWDIO goes to input */
|
||||
assert(ftdi_set_bitmode(&ftdic, 0xA3, BITMODE_BITBANG) == 0);
|
||||
|
||||
/* One clock cycle */
|
||||
ftdi_write_data(&ftdic, "\xAB\xA8", 2);
|
||||
|
||||
if(!dir) /* SWDIO goes to output */
|
||||
assert(ftdi_set_bitmode(&ftdic, 0xAB, BITMODE_BITBANG) == 0);
|
||||
}
|
||||
|
||||
uint8_t swdptap_bit_in(void)
|
||||
{
|
||||
uint8_t ret;
|
||||
|
||||
//ftdi_read_data(&ftdic, &ret, 1);
|
||||
ftdi_read_pins(&ftdic, &ret);
|
||||
//ret &= 0x08;
|
||||
ftdi_write_data(&ftdic, "\xA1\xA0", 2);
|
||||
|
||||
DEBUG("%x\n", ret);
|
||||
|
||||
return ret & 0x08;
|
||||
}
|
||||
|
||||
void swdptap_bit_out(uint8_t val)
|
||||
{
|
||||
uint8_t buf[3] = "\xA0\xA1\xA0";
|
||||
|
||||
DEBUG("%d", val);
|
||||
|
||||
if(val) {
|
||||
for(int i = 0; i < 3; i++)
|
||||
buf[i] |= 0x08;
|
||||
}
|
||||
ftdi_write_data(&ftdic, buf, 3);
|
||||
}
|
||||
|
||||
uint32_t swdptap_seq_in(int ticks)
|
||||
{
|
||||
uint32_t index = 1;
|
||||
uint32_t ret = 0;
|
||||
|
||||
swdptap_turnaround(1);
|
||||
|
||||
while (ticks--) {
|
||||
if (swdptap_bit_in())
|
||||
ret |= index;
|
||||
index <<= 1;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
uint8_t swdptap_seq_in_parity(uint32_t *ret, int ticks)
|
||||
{
|
||||
uint32_t index = 1;
|
||||
uint8_t parity = 0;
|
||||
*ret = 0;
|
||||
|
||||
swdptap_turnaround(1);
|
||||
|
||||
while (ticks--) {
|
||||
if (swdptap_bit_in()) {
|
||||
*ret |= index;
|
||||
parity ^= 1;
|
||||
}
|
||||
index <<= 1;
|
||||
}
|
||||
if (swdptap_bit_in())
|
||||
parity ^= 1;
|
||||
|
||||
return parity;
|
||||
}
|
||||
|
||||
void swdptap_seq_out(uint32_t MS, int ticks)
|
||||
{
|
||||
swdptap_turnaround(0);
|
||||
|
||||
while (ticks--) {
|
||||
swdptap_bit_out(MS & 1);
|
||||
MS >>= 1;
|
||||
}
|
||||
}
|
||||
|
||||
void swdptap_seq_out_parity(uint32_t MS, int ticks)
|
||||
{
|
||||
uint8_t parity = 0;
|
||||
|
||||
swdptap_turnaround(0);
|
||||
|
||||
while (ticks--) {
|
||||
swdptap_bit_out(MS & 1);
|
||||
parity ^= MS;
|
||||
MS >>= 1;
|
||||
}
|
||||
swdptap_bit_out(parity & 1);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue