Submitted by Darell Tan:
patch #7244: TPI bitbang implementation * bitbang.c: Add TPI bitbang stuff. * bitbang.h: (Ditto.) * avr.c: (Ditto.) * avr.h: (Ditto.) * pgm.c: (Ditto.) * pgm.h: (Ditto.) * serbb_posix.c: Wire bitbang_cmd_tpi into the struct pgm. * serbb_win32.c: (Ditto.) * par.c: (Ditto.) * doc/avrdude.texi: Document the TPI bitbang support. git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@976 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
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1
AUTHORS
1
AUTHORS
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@ -15,6 +15,7 @@ Contributors:
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Thomas Fischl <tfischl@gmx.de>
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David Hoerl <dhoerl@mac.com>
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Michal Ludvig <mludvig@logix.net.nz>
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Darell Tan
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For minor contributions, please see the ChangeLog files.
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15
ChangeLog
15
ChangeLog
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@ -1,3 +1,18 @@
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2011-08-23 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
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Submitted by Darell Tan:
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patch #7244: TPI bitbang implementation
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* bitbang.c: Add TPI bitbang stuff.
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* bitbang.h: (Ditto.)
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* avr.c: (Ditto.)
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* avr.h: (Ditto.)
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* pgm.c: (Ditto.)
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* pgm.h: (Ditto.)
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* serbb_posix.c: Wire bitbang_cmd_tpi into the struct pgm.
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* serbb_win32.c: (Ditto.)
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* par.c: (Ditto.)
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* doc/avrdude.texi: Document the TPI bitbang support.
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2011-08-17 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
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Submitted by Grygoriy Fuchedzhy:
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2
NEWS
2
NEWS
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@ -13,6 +13,8 @@ Current:
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- ATtiny4313
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* New programmers supported:
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- TPI programming through bitbang programmers (both, serial
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and parallel ones)
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* Bugfixes
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175
avr.c
175
avr.c
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@ -1,6 +1,7 @@
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/*
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* avrdude - A Downloader/Uploader for AVR device programmers
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* Copyright (C) 2000-2004 Brian S. Dean <bsd@bsdhome.com>
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* Copyright 2011 Darell Tan
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -36,17 +37,61 @@
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#include "ppi.h"
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#include "safemode.h"
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#include "update.h"
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#include "tpi.h"
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FP_UpdateProgress update_progress;
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#define DEBUG 0
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/* TPI: returns 1 if NVM controller busy, 0 if free */
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int avr_tpi_poll_nvmbsy(PROGRAMMER *pgm)
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{
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unsigned char cmd;
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unsigned char res;
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int rc = 0;
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cmd = TPI_CMD_SIN | TPI_SIO_ADDR(TPI_IOREG_NVMCSR);
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rc = pgm->cmd_tpi(pgm, &cmd, 1, &res, 1);
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return (rc & TPI_IOREG_NVMCSR_NVMBSY);
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}
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/* TPI: setup NVMCMD register and pointer register (PR) for read/write/erase */
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static int avr_tpi_setup_rw(PROGRAMMER * pgm, AVRMEM * mem,
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unsigned long addr, unsigned char nvmcmd)
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{
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unsigned char cmd[4];
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int rc;
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/* set NVMCMD register */
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cmd[0] = TPI_CMD_SOUT | TPI_SIO_ADDR(TPI_IOREG_NVMCMD);
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cmd[1] = nvmcmd;
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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if (rc == -1)
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return -1;
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/* set Pointer Register (PR) */
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cmd[0] = TPI_CMD_SSTPR | 0;
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cmd[1] = (mem->offset + addr) & 0xFF;
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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if (rc == -1)
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return -1;
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cmd[0] = TPI_CMD_SSTPR | 1;
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cmd[1] = ((mem->offset + addr) >> 8) & 0xFF;
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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if (rc == -1)
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return -1;
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return 0;
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}
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int avr_read_byte_default(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
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unsigned long addr, unsigned char * value)
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{
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unsigned char cmd[4];
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unsigned char res[4];
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unsigned char data;
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int r;
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OPCODE * readop, * lext;
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if (pgm->cmd == NULL) {
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@ -60,6 +105,27 @@ int avr_read_byte_default(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
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pgm->pgm_led(pgm, ON);
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pgm->err_led(pgm, OFF);
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if (p->flags & AVRPART_HAS_TPI) {
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if (pgm->cmd_tpi == NULL) {
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fprintf(stderr, "%s: Error: %s programmer does not support TPI\n",
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progname, pgm->type);
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return -1;
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}
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while (avr_tpi_poll_nvmbsy(pgm));
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/* setup for read */
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avr_tpi_setup_rw(pgm, mem, addr, TPI_NVMCMD_NO_OPERATION);
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/* load byte */
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cmd[0] = TPI_CMD_SLD;
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r = pgm->cmd_tpi(pgm, cmd, 1, value, 1);
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if (r == -1)
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return -1;
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return 0;
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}
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/*
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* figure out what opcode to use
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*/
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@ -151,6 +217,7 @@ int avr_read(PROGRAMMER * pgm, AVRPART * p, char * memtype, int size,
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unsigned char rbyte;
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unsigned long i;
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unsigned char * buf;
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unsigned char cmd[4];
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AVRMEM * mem;
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int rc;
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@ -171,6 +238,33 @@ int avr_read(PROGRAMMER * pgm, AVRPART * p, char * memtype, int size,
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*/
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memset(buf, 0xff, size);
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/* supports "paged load" thru post-increment */
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if ((p->flags & AVRPART_HAS_TPI) && mem->page_size != 0) {
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if (pgm->cmd_tpi == NULL) {
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fprintf(stderr, "%s: Error: %s programmer does not support TPI\n",
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progname, pgm->type);
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return -1;
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}
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while (avr_tpi_poll_nvmbsy(pgm));
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/* setup for read (NOOP) */
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avr_tpi_setup_rw(pgm, mem, 0, TPI_NVMCMD_NO_OPERATION);
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/* load bytes */
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for (i = 0; i < size; i++) {
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cmd[0] = TPI_CMD_SLD_PI;
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rc = pgm->cmd_tpi(pgm, cmd, 1, &buf[i], 1);
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if (rc == -1) {
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fprintf(stderr, "avr_read(): error reading address 0x%04lx\n", i);
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return -1;
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}
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report_progress(i, size, NULL);
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}
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return avr_mem_hiaddr(mem);
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}
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if (pgm->paged_load != NULL && mem->page_size != 0) {
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/*
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* the programmer supports a paged mode read, perhaps more
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@ -303,6 +397,52 @@ int avr_write_byte_default(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
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return -1;
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}
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if (p->flags & AVRPART_HAS_TPI) {
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if (pgm->cmd_tpi == NULL) {
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fprintf(stderr, "%s: Error: %s programmer does not support TPI\n",
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progname, pgm->type);
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return -1;
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}
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if (strcmp(mem->desc, "flash") == 0) {
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fprintf(stderr, "Writing a byte to flash is not supported for %s\n", p->desc);
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return -1;
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} else if ((mem->offset + addr) & 1) {
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fprintf(stderr, "Writing a byte to an odd location is not supported for %s\n", p->desc);
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return -1;
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}
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while (avr_tpi_poll_nvmbsy(pgm));
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/* must erase fuse first */
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if (strcmp(mem->desc, "fuse") == 0) {
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/* setup for SECTION_ERASE (high byte) */
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avr_tpi_setup_rw(pgm, mem, addr | 1, TPI_NVMCMD_SECTION_ERASE);
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/* write dummy byte */
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cmd[0] = TPI_CMD_SST;
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cmd[1] = 0xFF;
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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while (avr_tpi_poll_nvmbsy(pgm));
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}
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/* setup for WORD_WRITE */
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avr_tpi_setup_rw(pgm, mem, addr, TPI_NVMCMD_WORD_WRITE);
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cmd[0] = TPI_CMD_SST_PI;
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cmd[1] = data;
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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/* dummy high byte to start WORD_WRITE */
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cmd[0] = TPI_CMD_SST_PI;
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cmd[1] = data;
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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while (avr_tpi_poll_nvmbsy(pgm));
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return 0;
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}
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if (!mem->paged) {
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/*
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* check to see if the write is necessary by reading the existing
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@ -540,6 +680,7 @@ int avr_write(PROGRAMMER * pgm, AVRPART * p, char * memtype, int size,
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long i;
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unsigned char data;
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int werror;
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unsigned char cmd[4];
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AVRMEM * m;
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m = avr_locate_mem(p, memtype);
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@ -566,6 +707,40 @@ int avr_write(PROGRAMMER * pgm, AVRPART * p, char * memtype, int size,
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progbuf, wsize);
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}
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if ((p->flags & AVRPART_HAS_TPI) && m->page_size != 0) {
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if (pgm->cmd_tpi == NULL) {
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fprintf(stderr,
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"%s: Error: %s programmer does not support TPI\n",
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progname, pgm->type);
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return -1;
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}
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while (avr_tpi_poll_nvmbsy(pgm));
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/* setup for WORD_WRITE */
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avr_tpi_setup_rw(pgm, m, 0, TPI_NVMCMD_WORD_WRITE);
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/* make sure it's aligned to a word boundary */
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if (wsize & 0x1) {
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wsize++;
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}
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/* write words, low byte first */
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for (i = 0; i < wsize; i++) {
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cmd[0] = TPI_CMD_SST_PI;
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cmd[1] = m->buf[i];
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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cmd[1] = m->buf[++i];
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rc = pgm->cmd_tpi(pgm, cmd, 2, NULL, 0);
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while (avr_tpi_poll_nvmbsy(pgm));
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report_progress(i, wsize, NULL);
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}
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return i;
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}
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if (pgm->paged_write != NULL && m->page_size != 0) {
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/*
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* the programmer supports a paged mode write, perhaps more
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1
avr.h
1
avr.h
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@ -37,6 +37,7 @@ extern FP_UpdateProgress update_progress;
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extern "C" {
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#endif
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int avr_tpi_poll_nvmbsy(PROGRAMMER *pgm);
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int avr_read_byte_default(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
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unsigned long addr, unsigned char * value);
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226
bitbang.c
226
bitbang.c
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@ -2,6 +2,7 @@
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* avrdude - A Downloader/Uploader for AVR device programmers
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* Copyright (C) 2000, 2001, 2002, 2003 Brian S. Dean <bsd@bsdhome.com>
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* Copyright (C) 2005 Michael Holzt <kju-avr@fqdn.org>
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* Copyright 2011 Darell Tan
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -39,6 +40,7 @@
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#include "pgm.h"
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#include "par.h"
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#include "serbb.h"
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#include "tpi.h"
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static int delay_decrement;
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@ -212,6 +214,93 @@ static unsigned char bitbang_txrx(PROGRAMMER * pgm, unsigned char byte)
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return rbyte;
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}
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static int bitbang_tpi_clk(PROGRAMMER * pgm)
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{
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unsigned char r = 0;
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pgm->setpin(pgm, pgm->pinno[PIN_AVR_SCK], 1);
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r = pgm->getpin(pgm, pgm->pinno[PIN_AVR_MISO]);
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pgm->setpin(pgm, pgm->pinno[PIN_AVR_SCK], 0);
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return r;
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}
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void bitbang_tpi_tx(PROGRAMMER * pgm, unsigned char byte)
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{
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int i;
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unsigned char b, parity;
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/* start bit */
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pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], 0);
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bitbang_tpi_clk(pgm);
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parity = 0;
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for (i = 0; i <= 7; i++) {
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b = (byte >> i) & 0x01;
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parity ^= b;
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/* set the data input line as desired */
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pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], b);
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bitbang_tpi_clk(pgm);
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}
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/* parity bit */
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pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], parity);
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bitbang_tpi_clk(pgm);
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/* 2 stop bits */
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pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], 1);
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bitbang_tpi_clk(pgm);
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bitbang_tpi_clk(pgm);
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}
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int bitbang_tpi_rx(PROGRAMMER * pgm)
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{
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int i;
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unsigned char b, rbyte, parity;
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/* make sure pin is on for "pullup" */
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pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], 1);
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/* wait for start bit (up to 10 bits) */
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b = 1;
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for (i = 0; i < 10; i++) {
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b = bitbang_tpi_clk(pgm);
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if (b == 0)
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break;
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}
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if (b != 0) {
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fprintf(stderr, "bitbang_tpi_rx: start bit not received correctly\n");
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return -1;
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}
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rbyte = 0;
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parity = 0;
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for (i=0; i<=7; i++) {
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b = bitbang_tpi_clk(pgm);
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parity ^= b;
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rbyte |= b << i;
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}
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/* parity bit */
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if (bitbang_tpi_clk(pgm) != parity) {
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fprintf(stderr, "bitbang_tpi_rx: parity bit is wrong\n");
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return -1;
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}
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/* 2 stop bits */
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b = 1;
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b &= bitbang_tpi_clk(pgm);
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b &= bitbang_tpi_clk(pgm);
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if (b != 1) {
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fprintf(stderr, "bitbang_tpi_rx: stop bits not received correctly\n");
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return -1;
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}
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return rbyte;
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}
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int bitbang_rdy_led(PROGRAMMER * pgm, int value)
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{
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@ -267,6 +356,44 @@ int bitbang_cmd(PROGRAMMER * pgm, unsigned char cmd[4],
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return 0;
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}
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int bitbang_cmd_tpi(PROGRAMMER * pgm, unsigned char cmd[],
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int cmd_len, unsigned char res[], int res_len)
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{
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int i, r;
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pgm->pgm_led(pgm, ON);
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for (i=0; i<cmd_len; i++) {
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bitbang_tpi_tx(pgm, cmd[i]);
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}
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r = 0;
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for (i=0; i<res_len; i++) {
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r = bitbang_tpi_rx(pgm);
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if (r == -1)
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break;
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res[i] = r;
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}
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if(verbose >= 2)
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{
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fprintf(stderr, "bitbang_cmd_tpi(): [ ");
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for(i = 0; i < cmd_len; i++)
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fprintf(stderr, "%02X ", cmd[i]);
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fprintf(stderr, "] [ ");
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for(i = 0; i < res_len; i++)
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{
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fprintf(stderr, "%02X ", res[i]);
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}
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fprintf(stderr, "]\n");
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}
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pgm->pgm_led(pgm, OFF);
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if (r == -1)
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return -1;
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return 0;
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}
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/*
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* transmit bytes via SPI and return the results; 'cmd' and
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* 'res' must point to data buffers
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|
@ -308,6 +435,39 @@ int bitbang_chip_erase(PROGRAMMER * pgm, AVRPART * p)
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{
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unsigned char cmd[4];
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||||
unsigned char res[4];
|
||||
AVRMEM *mem;
|
||||
|
||||
if (p->flags & AVRPART_HAS_TPI) {
|
||||
pgm->pgm_led(pgm, ON);
|
||||
|
||||
while (avr_tpi_poll_nvmbsy(pgm));
|
||||
|
||||
/* NVMCMD <- CHIP_ERASE */
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SOUT | TPI_SIO_ADDR(TPI_IOREG_NVMCMD));
|
||||
bitbang_tpi_tx(pgm, TPI_NVMCMD_CHIP_ERASE); /* CHIP_ERASE */
|
||||
|
||||
/* Set Pointer Register */
|
||||
mem = avr_locate_mem(p, "flash");
|
||||
if (mem == NULL) {
|
||||
fprintf(stderr, "No flash memory to erase for part %s\n",
|
||||
p->desc);
|
||||
return -1;
|
||||
}
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SSTPR | 0);
|
||||
bitbang_tpi_tx(pgm, (mem->offset & 0xFF) | 1); /* high byte */
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SSTPR | 1);
|
||||
bitbang_tpi_tx(pgm, (mem->offset >> 8) & 0xFF);
|
||||
|
||||
/* write dummy value to start erase */
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SST);
|
||||
bitbang_tpi_tx(pgm, 0xFF);
|
||||
|
||||
while (avr_tpi_poll_nvmbsy(pgm));
|
||||
|
||||
pgm->pgm_led(pgm, OFF);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (p->op[AVR_OP_CHIP_ERASE] == NULL) {
|
||||
fprintf(stderr, "chip erase instruction not defined for part \"%s\"\n",
|
||||
|
@ -336,6 +496,19 @@ int bitbang_program_enable(PROGRAMMER * pgm, AVRPART * p)
|
|||
{
|
||||
unsigned char cmd[4];
|
||||
unsigned char res[4];
|
||||
int i;
|
||||
|
||||
if (p->flags & AVRPART_HAS_TPI) {
|
||||
/* enable NVM programming */
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SKEY);
|
||||
for (i = sizeof(tpi_skey) - 1; i >= 0; i--)
|
||||
bitbang_tpi_tx(pgm, tpi_skey[i]);
|
||||
|
||||
/* check NVMEN bit */
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SLDCS | TPI_REG_TPISR);
|
||||
i = bitbang_tpi_rx(pgm);
|
||||
return (i != -1 && (i & TPI_REG_TPISR_NVMEN)) ? 0 : -2;
|
||||
}
|
||||
|
||||
if (p->op[AVR_OP_PGM_ENABLE] == NULL) {
|
||||
fprintf(stderr, "program enable instruction not defined for part \"%s\"\n",
|
||||
|
@ -360,17 +533,68 @@ int bitbang_initialize(PROGRAMMER * pgm, AVRPART * p)
|
|||
{
|
||||
int rc;
|
||||
int tries;
|
||||
int i;
|
||||
|
||||
bitbang_calibrate_delay();
|
||||
|
||||
pgm->powerup(pgm);
|
||||
usleep(20000);
|
||||
|
||||
/* TPIDATA is a single line, so MISO & MOSI should be connected */
|
||||
if (p->flags & AVRPART_HAS_TPI) {
|
||||
/* make sure cmd_tpi() is defined */
|
||||
if (pgm->cmd_tpi == NULL) {
|
||||
fprintf(stderr, "%s: Error: %s programmer does not support TPI\n",
|
||||
progname, pgm->type);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* bring RESET high first */
|
||||
pgm->setpin(pgm, pgm->pinno[PIN_AVR_RESET], 1);
|
||||
usleep(1000);
|
||||
|
||||
if (verbose >= 2)
|
||||
fprintf(stderr, "doing MOSI-MISO link check\n");
|
||||
|
||||
pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], 0);
|
||||
if (pgm->getpin(pgm, pgm->pinno[PIN_AVR_MISO]) != 0) {
|
||||
fprintf(stderr, "MOSI->MISO 0 failed\n");
|
||||
return -1;
|
||||
}
|
||||
pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], 1);
|
||||
if (pgm->getpin(pgm, pgm->pinno[PIN_AVR_MISO]) != 1) {
|
||||
fprintf(stderr, "MOSI->MISO 1 failed\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (verbose >= 2)
|
||||
fprintf(stderr, "MOSI-MISO link present\n");
|
||||
}
|
||||
|
||||
pgm->setpin(pgm, pgm->pinno[PIN_AVR_SCK], 0);
|
||||
pgm->setpin(pgm, pgm->pinno[PIN_AVR_RESET], 0);
|
||||
usleep(20000);
|
||||
|
||||
pgm->highpulsepin(pgm, pgm->pinno[PIN_AVR_RESET]);
|
||||
if (p->flags & AVRPART_HAS_TPI) {
|
||||
/* keep TPIDATA high for 16 clock cycles */
|
||||
pgm->setpin(pgm, pgm->pinno[PIN_AVR_MOSI], 1);
|
||||
for (i = 0; i < 16; i++)
|
||||
pgm->highpulsepin(pgm, pgm->pinno[PIN_AVR_SCK]);
|
||||
|
||||
/* remove extra guard timing bits */
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SSTCS | TPI_REG_TPIPCR);
|
||||
bitbang_tpi_tx(pgm, 0x7);
|
||||
|
||||
/* read TPI ident reg */
|
||||
bitbang_tpi_tx(pgm, TPI_CMD_SLDCS | TPI_REG_TPIIR);
|
||||
rc = bitbang_tpi_rx(pgm);
|
||||
if (rc != 0x80) {
|
||||
fprintf(stderr, "TPIIR not correct\n");
|
||||
return -1;
|
||||
}
|
||||
} else {
|
||||
pgm->highpulsepin(pgm, pgm->pinno[PIN_AVR_RESET]);
|
||||
}
|
||||
|
||||
usleep(20000); /* 20 ms XXX should be a per-chip parameter */
|
||||
|
||||
|
|
|
@ -2,6 +2,7 @@
|
|||
* avrdude - A Downloader/Uploader for AVR device programmers
|
||||
* Copyright (C) 2000, 2001, 2002, 2003 Brian S. Dean <bsd@bsdhome.com>
|
||||
* Copyright (C) 2005 Michael Holzt <kju-avr@fqdn.org>
|
||||
* Copyright 2011 Darell Tan
|
||||
*
|
||||
* 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
|
||||
|
@ -39,6 +40,8 @@ int bitbang_pgm_led (PROGRAMMER * pgm, int value);
|
|||
int bitbang_vfy_led (PROGRAMMER * pgm, int value);
|
||||
int bitbang_cmd (PROGRAMMER * pgm, unsigned char cmd[4],
|
||||
unsigned char res[4]);
|
||||
int bitbang_cmd_tpi (PROGRAMMER * pgm, unsigned char cmd[],
|
||||
int cmd_len, unsigned char res[], int res_len);
|
||||
int bitbang_spi (PROGRAMMER * pgm, unsigned char cmd[],
|
||||
unsigned char res[], int count);
|
||||
int bitbang_chip_erase (PROGRAMMER * pgm, AVRPART * p);
|
||||
|
|
|
@ -2436,6 +2436,44 @@ Solution: Use the following pin mapping:
|
|||
@item 6 (GND) @tab GND @tab 2
|
||||
@end multitable
|
||||
|
||||
@item
|
||||
Problem: I want to program an ATtiny4/5/9/10 device using a serial/parallel
|
||||
bitbang programmer. How to connect the pins?
|
||||
|
||||
Solution: Since TPI has only 1 pin for bi-directional data transfer, both
|
||||
@var{MISO} and @var{MOSI} pins should be connected to the @var{TPIDATA} pin
|
||||
on the ATtiny device.
|
||||
However, a 1K resistor should be placed between the @var{MOSI} and @var{TPIDATA}.
|
||||
The @var{MISO} pin connects to @var{TPIDATA} directly.
|
||||
The @var{SCK} pin is connected to @var{TPICLK}.
|
||||
|
||||
In addition, the @var{Vcc}, @var{/RESET} and @var{GND} pins should
|
||||
be connected to their respective ports on the ATtiny device.
|
||||
|
||||
@item
|
||||
Problem: How can I use a FTDI FT232R USB-to-Serial device for bitbang programming?
|
||||
|
||||
Solution: When connecting the FT232 directly to the pins of the target Atmel device,
|
||||
the polarity of the pins defined in the @code{programmer} definition should be
|
||||
inverted by prefixing a tilde. For example, the @var{dasa} programmer would
|
||||
look like this when connected via a FT232R device (notice the tildes in
|
||||
front of pins 7, 4, 3 and 8):
|
||||
|
||||
@example
|
||||
programmer
|
||||
id = "dasa_ftdi";
|
||||
desc = "serial port banging, reset=rts sck=dtr mosi=txd miso=cts";
|
||||
type = serbb;
|
||||
reset = ~7;
|
||||
sck = ~4;
|
||||
mosi = ~3;
|
||||
miso = ~8;
|
||||
;
|
||||
@end example
|
||||
|
||||
Note that this uses the FT232 device as a normal serial port, not using the
|
||||
FTDI drivers in the special bitbang mode.
|
||||
|
||||
@item
|
||||
Problem: My ATtiny4/5/9/10 reads out fine, but any attempt to program
|
||||
it (through TPI) fails. Instead, the memory retains the old contents.
|
||||
|
|
1
par.c
1
par.c
|
@ -416,6 +416,7 @@ void par_initpgm(PROGRAMMER * pgm)
|
|||
pgm->program_enable = bitbang_program_enable;
|
||||
pgm->chip_erase = bitbang_chip_erase;
|
||||
pgm->cmd = bitbang_cmd;
|
||||
pgm->cmd_tpi = bitbang_cmd_tpi;
|
||||
pgm->spi = bitbang_spi;
|
||||
pgm->open = par_open;
|
||||
pgm->close = par_close;
|
||||
|
|
1
pgm.c
1
pgm.c
|
@ -118,6 +118,7 @@ PROGRAMMER * pgm_new(void)
|
|||
* assigned before they are called
|
||||
*/
|
||||
pgm->cmd = NULL;
|
||||
pgm->cmd_tpi = NULL;
|
||||
pgm->spi = NULL;
|
||||
pgm->paged_write = NULL;
|
||||
pgm->paged_load = NULL;
|
||||
|
|
2
pgm.h
2
pgm.h
|
@ -78,6 +78,8 @@ typedef struct programmer_t {
|
|||
int (*chip_erase) (struct programmer_t * pgm, AVRPART * p);
|
||||
int (*cmd) (struct programmer_t * pgm, unsigned char cmd[4],
|
||||
unsigned char res[4]);
|
||||
int (*cmd_tpi) (struct programmer_t * pgm, unsigned char cmd[],
|
||||
int cmd_len, unsigned char res[], int res_len);
|
||||
int (*spi) (struct programmer_t * pgm, unsigned char cmd[],
|
||||
unsigned char res[], int count);
|
||||
int (*open) (struct programmer_t * pgm, char * port);
|
||||
|
|
|
@ -300,6 +300,7 @@ void serbb_initpgm(PROGRAMMER *pgm)
|
|||
pgm->program_enable = bitbang_program_enable;
|
||||
pgm->chip_erase = bitbang_chip_erase;
|
||||
pgm->cmd = bitbang_cmd;
|
||||
pgm->cmd_tpi = bitbang_cmd_tpi;
|
||||
pgm->open = serbb_open;
|
||||
pgm->close = serbb_close;
|
||||
pgm->setpin = serbb_setpin;
|
||||
|
|
|
@ -361,6 +361,7 @@ void serbb_initpgm(PROGRAMMER *pgm)
|
|||
pgm->program_enable = bitbang_program_enable;
|
||||
pgm->chip_erase = bitbang_chip_erase;
|
||||
pgm->cmd = bitbang_cmd;
|
||||
pgm->cmd_tpi = bitbang_cmd_tpi;
|
||||
pgm->open = serbb_open;
|
||||
pgm->close = serbb_close;
|
||||
pgm->setpin = serbb_setpin;
|
||||
|
|
Loading…
Reference in New Issue