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avrdude/src/avrftdi.c

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/*
* avrftdi - extension for avrdude, Wolfgang Moser, Ville Voipio
* Copyright (C) 2011 Hannes Weisbach, Doug Springer
*
* 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 2 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/>.
*/
/* $Id$ */
/*
* Interface to the MPSSE Engine of FTDI Chips using libftdi.
*/
#include "ac_cfg.h"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdint.h>
#include <stdarg.h>
#include "avrdude.h"
#include "libavrdude.h"
#include "avrftdi.h"
#include "avrftdi_tpi.h"
#include "avrftdi_private.h"
#include "usbdevs.h"
#ifndef MAX
#define MAX(a,b) ((a)>(b)?(a):(b))
#endif
#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#endif
#ifdef DO_NOT_BUILD_AVRFTDI
static int avrftdi_noftdi_open(PROGRAMMER *pgm, const char *name) {
pmsg_error("no libftdi or libusb support; install libftdi1/libusb-1.0 or libftdi/libusb and run configure/make again\n");
return -1;
}
void avrftdi_initpgm(PROGRAMMER *pgm) {
strcpy(pgm->type, "avrftdi");
pgm->open = avrftdi_noftdi_open;
}
#else
enum { FTDI_SCK = 0, FTDI_SDO, FTDI_SDI, FTDI_RESET };
static int write_flush(avrftdi_t *);
/*
* returns a human-readable name for a pin number. The name should match with
* the pin names used in FTDI datasheets.
*/
static char*
ftdi_pin_name(avrftdi_t* pdata, struct pindef_t pin)
{
static char str[128];
char interface = '@';
/* INTERFACE_ANY is zero, so @ is used
* INTERFACE_A is one, so '@' + 1 = 'A'
* and so forth ...
* be aware, there is an 'interface' member in ftdi_context,
* however, we really want the 'index' member here.
*/
interface += pdata->ftdic->index;
int pinno;
int n = 0;
int mask = pin.mask[0];
const char * fmt;
str[0] = 0;
for(pinno = 0; mask; mask >>= 1, pinno++) {
if(!(mask & 1))
continue;
int chars = 0;
char port;
/* This is FTDI's naming scheme.
* probably 'D' is for data and 'C' for control
*/
if(pinno < 8)
port = 'D';
else
port = 'C';
if(str[0] == 0)
fmt = "%c%cBUS%d%n";
else
fmt = ", %c%cBUS%d%n";
snprintf(&str[n], sizeof(str) - n, fmt, interface, port, pinno, &chars);
n += chars;
}
return str;
}
/*
* output function, to save if(vebose>level)-constructs. Also prefixes output
* with "avrftdi function-name(line-number):" to identify were messages came
* from.
* This function is the backend of the log_*-macros, but it can be used
* directly.
*/
void avrftdi_log(int level, const char * func, int line,
const char * fmt, ...) {
static int skip_prefix = 0;
const char *p = fmt;
va_list ap;
if(verbose >= level)
{
if(!skip_prefix)
{
switch(level) {
case ERR: msg_error("E "); break;
case WARN: msg_error("W "); break;
case INFO: msg_error("I "); break;
case DEBUG: msg_error("D "); break;
case TRACE: msg_error("T "); break;
default: msg_error(" "); break;
}
msg_error("%s(%d): ", func, line);
}
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
skip_prefix = 1;
while(*p++)
if(*p == '\n' && !(*(p+1)))
skip_prefix = 0;
}
/*
* helper function to print a binary buffer *buf of size len. Begin and end of
* the dump are enclosed in the string contained in *desc. Offset denotes the
* number of bytes which are printed on the first line (may be 0). After that
* width bytes are printed on each line
*/
static void buf_dump(const unsigned char *buf, int len, char *desc,
int offset, int width)
{
int i;
msg_info("%s begin:\n", desc);
for (i = 0; i < offset; i++)
msg_info("%02x ", buf[i]);
msg_info("\n");
for (i++; i <= len; i++) {
msg_info("%02x ", buf[i-1]);
if((i-offset) != 0 && (i-offset)%width == 0)
msg_info("\n");
}
msg_info("%s end\n", desc);
}
/*
* calculates the so-called 'divisor'-value from a given frequency.
* the divisor is sent to the chip.
*/
static int set_frequency(avrftdi_t* ftdi, uint32_t freq)
{
int32_t divisor;
uint8_t buf[3];
/* divisor on 6000000 / freq - 1 */
divisor = (6000000 / freq) - 1;
if (divisor < 0) {
log_warn("Frequency too high (%u > 6 MHz)\n", freq);
log_warn("Resetting Frequency to 6MHz\n");
divisor = 0;
}
if (divisor > 65535) {
log_warn("Frequency too low (%u < 91.553 Hz)\n", freq);
log_warn("Resetting Frequency to 91.553Hz\n");
divisor = 65535;
}
log_info("Using frequency: %d\n", 6000000/(divisor+1));
log_info("Clock divisor: 0x%04x\n", divisor);
buf[0] = TCK_DIVISOR;
buf[1] = (uint8_t)(divisor & 0xff);
buf[2] = (uint8_t)((divisor >> 8) & 0xff);
E(ftdi_write_data(ftdi->ftdic, buf, 3) < 0, ftdi->ftdic);
return 0;
}
/*
* This function sets or clears any pin, except SCK, SDI and SDO. Depending
* on the pin configuration, a non-zero value sets the pin in the 'active'
* state (high active, low active) and a zero value sets the pin in the
* inactive state.
* Because we configured the pin direction mask earlier, nothing bad can happen
* here.
*/
static int set_pin(const PROGRAMMER *pgm, int pinfunc, int value) {
if(pinfunc < 0 || pinfunc >= N_PINS)
return -1;
avrftdi_t* pdata = to_pdata(pgm);
struct pindef_t pin = pgm->pin[pinfunc];
if (pin.mask[0] == 0) {
// ignore not defined pins (might be the led or vcc or buff if not needed)
return 0;
}
log_debug("Setting pin %s (%s) as %s: %s (%s active)\n",
pinmask_to_str(pin.mask), ftdi_pin_name(pdata, pin),
avr_pin_name(pinfunc),
(value) ? "high" : "low", (pin.inverse[0]) ? "low" : "high");
pdata->pin_value = SET_BITS_0(pdata->pin_value, pgm, pinfunc, value);
return write_flush(pdata);
}
/*
* Mandatory callbacks which boil down to GPIO.
*/
static int set_led_pgm(const PROGRAMMER *pgm, int value) {
return set_pin(pgm, PIN_LED_PGM, value);
}
static int set_led_rdy(const PROGRAMMER *pgm, int value) {
return set_pin(pgm, PIN_LED_RDY, value);
}
static int set_led_err(const PROGRAMMER *pgm, int value) {
return set_pin(pgm, PIN_LED_ERR, value);
}
static int set_led_vfy(const PROGRAMMER *pgm, int value) {
return set_pin(pgm, PIN_LED_VFY, value);
}
static void avrftdi_enable(PROGRAMMER *pgm, const AVRPART *p) {
set_pin(pgm, PPI_AVR_BUFF, ON);
// Switch to TPI initialisation in avrftdi_tpi.c
if(p->prog_modes & PM_TPI)
avrftdi_tpi_initpgm(pgm);
}
static void avrftdi_disable(const PROGRAMMER *pgm) {
set_pin(pgm, PPI_AVR_BUFF, OFF);
}
static void avrftdi_powerup(const PROGRAMMER *pgm) {
set_pin(pgm, PPI_AVR_VCC, ON);
}
static void avrftdi_powerdown(const PROGRAMMER *pgm) {
set_pin(pgm, PPI_AVR_VCC, OFF);
}
static inline int set_data(const PROGRAMMER *pgm, unsigned char *buf, unsigned char data, bool read_data) {
int j;
int buf_pos = 0;
unsigned char bit = 0x80;
avrftdi_t* pdata = to_pdata(pgm);
for (j=0; j<8; j++) {
pdata->pin_value = SET_BITS_0(pdata->pin_value,pgm,PIN_AVR_SDO,data & bit);
pdata->pin_value = SET_BITS_0(pdata->pin_value,pgm,PIN_AVR_SCK,0);
buf[buf_pos++] = SET_BITS_LOW;
buf[buf_pos++] = (pdata->pin_value) & 0xff;
buf[buf_pos++] = (pdata->pin_direction) & 0xff;
buf[buf_pos++] = SET_BITS_HIGH;
buf[buf_pos++] = ((pdata->pin_value) >> 8) & 0xff;
buf[buf_pos++] = ((pdata->pin_direction) >> 8) & 0xff;
pdata->pin_value = SET_BITS_0(pdata->pin_value,pgm,PIN_AVR_SCK,1);
buf[buf_pos++] = SET_BITS_LOW;
buf[buf_pos++] = (pdata->pin_value) & 0xff;
buf[buf_pos++] = (pdata->pin_direction) & 0xff;
buf[buf_pos++] = SET_BITS_HIGH;
buf[buf_pos++] = ((pdata->pin_value) >> 8) & 0xff;
buf[buf_pos++] = ((pdata->pin_direction) >> 8) & 0xff;
if (read_data) {
buf[buf_pos++] = GET_BITS_LOW;
buf[buf_pos++] = GET_BITS_HIGH;
}
bit >>= 1;
}
return buf_pos;
}
static inline unsigned char extract_data(const PROGRAMMER *pgm, unsigned char *buf, int offset) {
int j;
unsigned char bit = 0x80;
unsigned char r = 0;
buf += offset * 16; // 2 bytes per bit, 8 bits
for (j=0; j<8; j++) {
uint16_t in = buf[0] | (buf[1] << 8);
if (GET_BITS_0(in,pgm,PIN_AVR_SDI)) {
r |= bit;
}
buf += 2; // 2 bytes per input
bit >>= 1;
}
return r;
}
static int avrftdi_transmit_bb(const PROGRAMMER *pgm, unsigned char mode, const unsigned char *buf,
unsigned char *data, int buf_size)
{
size_t remaining = buf_size;
size_t written = 0;
avrftdi_t* pdata = to_pdata(pgm);
size_t blocksize = pdata->rx_buffer_size/2; // we are reading 2 bytes per data byte
// determine a maximum size of data block
size_t max_size = MIN(pdata->ftdic->max_packet_size, (unsigned int) pdata->tx_buffer_size);
// select block size so that resulting commands does not exceed max_size if possible
blocksize = MAX(1,(max_size-7)/((8*2*6)+(8*1*2)));
// msg_info("blocksize %d \n", blocksize);
unsigned char* send_buffer = alloca((8 * 2 * 6) * blocksize + (8 * 1 * 2) * blocksize + 7);
unsigned char* recv_buffer = alloca(2 * 16 * blocksize);
while(remaining)
{
size_t transfer_size = (remaining > blocksize) ? blocksize : remaining;
// (8*2) outputs per data byte, 6 transmit bytes per output (SET_BITS_LOW/HIGH),
// (8*1) inputs per data byte, 2 transmit bytes per input (GET_BITS_LOW/HIGH),
// 1x SEND_IMMEDIATE
int len = 0;
for(size_t i = 0 ; i < transfer_size; i++) {
len += set_data(pgm, send_buffer + len, buf[written+i], (mode & MPSSE_DO_READ) != 0);
}
pdata->pin_value = SET_BITS_0(pdata->pin_value,pgm,PIN_AVR_SCK,0);
send_buffer[len++] = SET_BITS_LOW;
send_buffer[len++] = (pdata->pin_value) & 0xff;
send_buffer[len++] = (pdata->pin_direction) & 0xff;
send_buffer[len++] = SET_BITS_HIGH;
send_buffer[len++] = ((pdata->pin_value) >> 8) & 0xff;
send_buffer[len++] = ((pdata->pin_direction) >> 8) & 0xff;
send_buffer[len++] = SEND_IMMEDIATE;
E(ftdi_write_data(pdata->ftdic, send_buffer, len) != len, pdata->ftdic);
if (mode & MPSSE_DO_READ) {
int n;
size_t k = 0;
do {
n = ftdi_read_data(pdata->ftdic, &recv_buffer[k], 2*16*transfer_size - k);
E(n < 0, pdata->ftdic);
k += n;
} while (k < transfer_size);
for(size_t i = 0 ; i< transfer_size; i++) {
data[written + i] = extract_data(pgm, recv_buffer, i);
}
}
written += transfer_size;
remaining -= transfer_size;
}
return written;
}
/* Send 'buf_size' bytes from 'cmd' to device and return data from device in
* buffer 'data'.
* Write is only performed when mode contains MPSSE_DO_WRITE.
* Read is only performed when mode contains MPSSE_DO_WRITE and MPSSE_DO_READ.
*/
static int avrftdi_transmit_mpsse(avrftdi_t* pdata, unsigned char mode, const unsigned char *buf,
unsigned char *data, int buf_size)
{
size_t blocksize;
size_t remaining = buf_size;
size_t written = 0;
unsigned char cmd[3];
// unsigned char si = SEND_IMMEDIATE;
cmd[0] = mode | MPSSE_WRITE_NEG;
cmd[1] = ((buf_size - 1) & 0xff);
cmd[2] = (((buf_size - 1) >> 8) & 0xff);
//if we are not reading back, we can just write the data out
if(!(mode & MPSSE_DO_READ))
blocksize = buf_size;
else
blocksize = pdata->rx_buffer_size;
E(ftdi_write_data(pdata->ftdic, cmd, sizeof(cmd)) != sizeof(cmd), pdata->ftdic);
while(remaining)
{
size_t transfer_size = (remaining > blocksize) ? blocksize : remaining;
E((size_t) ftdi_write_data(pdata->ftdic, (unsigned char*)&buf[written], transfer_size) != transfer_size, pdata->ftdic);
#if 0
if(remaining < blocksize)
E(ftdi_write_data(pdata->ftdic, &si, sizeof(si)) != sizeof(si), pdata->ftdic);
#endif
if (mode & MPSSE_DO_READ) {
int n;
size_t k = 0;
do {
n = ftdi_read_data(pdata->ftdic, &data[written + k], transfer_size - k);
E(n < 0, pdata->ftdic);
k += n;
} while (k < transfer_size);
}
written += transfer_size;
remaining -= transfer_size;
}
return written;
}
static inline int avrftdi_transmit(const PROGRAMMER *pgm, unsigned char mode, const unsigned char *buf,
unsigned char *data, int buf_size)
{
avrftdi_t* pdata = to_pdata(pgm);
if (pdata->use_bitbanging)
return avrftdi_transmit_bb(pgm, mode, buf, data, buf_size);
else
return avrftdi_transmit_mpsse(pdata, mode, buf, data, buf_size);
}
static int write_flush(avrftdi_t* pdata)
{
unsigned char buf[6];
log_debug("Setting pin direction (0x%04x) and value (0x%04x)\n",
pdata->pin_direction, pdata->pin_value);
buf[0] = SET_BITS_LOW;
buf[1] = (pdata->pin_value) & 0xff;
buf[2] = (pdata->pin_direction) & 0xff;
buf[3] = SET_BITS_HIGH;
buf[4] = ((pdata->pin_value) >> 8) & 0xff;
buf[5] = ((pdata->pin_direction) >> 8) & 0xff;
E(ftdi_write_data(pdata->ftdic, buf, 6) != 6, pdata->ftdic);
log_trace("Set pins command: %02x %02x %02x %02x %02x %02x\n",
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
/* we need to flush here, because set_pin is used as reset.
* if we want to sleep reset periods, we must be certain the
* avr has got the reset signal when we start sleeping.
* (it may be stuck in the USB stack or some USB hub)
*
* Add.: purge does NOT flush. It clears. Also, it is unknown, when the purge
* command actually arrives at the chip.
* Use read pin status command as sync.
*/
//E(ftdi_usb_purge_buffers(pdata->ftdic), pdata->ftdic);
unsigned char cmd[] = { GET_BITS_LOW, SEND_IMMEDIATE };
E(ftdi_write_data(pdata->ftdic, cmd, sizeof(cmd)) != sizeof(cmd), pdata->ftdic);
int num = 0;
do
{
int n = ftdi_read_data(pdata->ftdic, buf, sizeof(buf));
if(n > 0)
num += n;
E(n < 0, pdata->ftdic);
} while(num < 1);
if(num > 1)
log_warn("Read %d extra bytes\n", num-1);
return 0;
}
static int avrftdi_check_pins_bb(const PROGRAMMER *pgm, bool output) {
int pin;
/* pin checklist. */
struct pin_checklist_t pin_checklist[N_PINS];
avrftdi_t* pdata = to_pdata(pgm);
/* value for 8/12/16 bit wide interface */
int valid_mask = ((1 << pdata->pin_limit) - 1);
log_debug("Using valid mask bitbanging: 0x%08x\n", valid_mask);
static struct pindef_t valid_pins;
valid_pins.mask[0] = valid_mask;
valid_pins.inverse[0] = valid_mask ;
/* build pin checklist */
for(pin = 0; pin < N_PINS; ++pin) {
pin_checklist[pin].pinname = pin;
pin_checklist[pin].mandatory = 0;
pin_checklist[pin].valid_pins = &valid_pins;
}
/* assumes all checklists above have same number of entries */
return pins_check(pgm, pin_checklist, N_PINS, output);
}
static int avrftdi_check_pins_mpsse(const PROGRAMMER *pgm, bool output) {
int pin;
/* pin checklist. */
struct pin_checklist_t pin_checklist[N_PINS];
avrftdi_t* pdata = to_pdata(pgm);
/* SCK/SDO/SDI are fixed and not invertible? */
/* TODO: inverted SCK/SDI/SDO */
static const struct pindef_t valid_pins_SCK = {{0x01},{0x00}};
static const struct pindef_t valid_pins_SDO = {{0x02},{0x00}};
static const struct pindef_t valid_pins_SDI = {{0x04},{0x00}};
/* value for 8/12/16 bit wide interface for other pins */
int valid_mask = ((1 << pdata->pin_limit) - 1);
/* mask out SCK/SDI/SDO */
valid_mask &= ~((1 << FTDI_SCK) | (1 << FTDI_SDO) | (1 << FTDI_SDI));
log_debug("Using valid mask mpsse: 0x%08x\n", valid_mask);
static struct pindef_t valid_pins_others;
valid_pins_others.mask[0] = valid_mask;
valid_pins_others.inverse[0] = valid_mask ;
/* build pin checklist */
for(pin = 0; pin < N_PINS; ++pin) {
pin_checklist[pin].pinname = pin;
pin_checklist[pin].mandatory = 0;
pin_checklist[pin].valid_pins = &valid_pins_others;
}
/* now set mpsse specific pins */
pin_checklist[PIN_AVR_SCK].mandatory = 1;
pin_checklist[PIN_AVR_SCK].valid_pins = &valid_pins_SCK;
pin_checklist[PIN_AVR_SDO].mandatory = 1;
pin_checklist[PIN_AVR_SDO].valid_pins = &valid_pins_SDO;
pin_checklist[PIN_AVR_SDI].mandatory = 1;
pin_checklist[PIN_AVR_SDI].valid_pins = &valid_pins_SDI;
pin_checklist[PIN_AVR_RESET].mandatory = 1;
/* assumes all checklists above have same number of entries */
return pins_check(pgm, pin_checklist, N_PINS, output);
}
static int avrftdi_pin_setup(const PROGRAMMER *pgm) {
int pin;
/*************
* pin setup *
*************/
avrftdi_t* pdata = to_pdata(pgm);
bool pin_check_mpsse = (0 == avrftdi_check_pins_mpsse(pgm, verbose>3));
bool pin_check_bitbanging = (0 == avrftdi_check_pins_bb(pgm, verbose>3));
if (!pin_check_mpsse && !pin_check_bitbanging) {
log_err("No valid pin configuration found.\n");
avrftdi_check_pins_bb(pgm, true);
log_err("Pin configuration for FTDI MPSSE must be:\n");
log_err("%s: 0, %s: 1, %s: 2 (is: %s, %s, %s)\n", avr_pin_name(PIN_AVR_SCK),
avr_pin_name(PIN_AVR_SDO), avr_pin_name(PIN_AVR_SDI),
pins_to_str(&pgm->pin[PIN_AVR_SCK]),
pins_to_str(&pgm->pin[PIN_AVR_SDO]),
pins_to_str(&pgm->pin[PIN_AVR_SDI]));
log_err("If other pin configuration is used, fallback to slower bitbanging mode is used.\n");
return -1;
}
pdata->use_bitbanging = !pin_check_mpsse;
if (pdata->use_bitbanging)
log_info("Because of pin configuration fallback to bitbanging mode.\n");
/*
* TODO: No need to fail for a wrongly configured led or something.
* Maybe we should only fail for SCK; SDI, SDO, RST (and probably
* VCC and BUFF).
*/
/* everything is an output, except SDI */
for(pin = 0; pin < N_PINS; ++pin) {
pdata->pin_direction |= pgm->pin[pin].mask[0];
pdata->pin_value = SET_BITS_0(pdata->pin_value, pgm, pin, OFF);
}
pdata->pin_direction &= ~pgm->pin[PIN_AVR_SDI].mask[0];
for(pin = PIN_LED_ERR; pin < N_PINS; ++pin) {
pdata->led_mask |= pgm->pin[pin].mask[0];
}
log_info("Pin direction mask: %04x\n", pdata->pin_direction);
log_info("Pin value mask: %04x\n", pdata->pin_value);
return 0;
}
static int avrftdi_open(PROGRAMMER *pgm, const char *port) {
int vid, pid, interface, index, err;
const char *serial, *desc;
avrftdi_t* pdata = to_pdata(pgm);
/************************
* parameter validation *
************************/
/* use vid/pid in following priority: config,
* defaults. cmd-line is currently not supported */
if (pgm->usbvid)
vid = pgm->usbvid;
else
vid = USB_VENDOR_FTDI;
LNODEID usbpid = lfirst(pgm->usbpid);
if (usbpid) {
pid = *(int *)(ldata(usbpid));
if (lnext(usbpid))
pmsg_warning("using PID 0x%04x, ignoring remaining PIDs in list\n", pid);
} else
pid = USB_DEVICE_FT2232;
if (0 == pgm->usbsn[0]) /* we don't care about SN. Use first avail. */
serial = NULL;
else
serial = pgm->usbsn;
/* not used yet, but i put them here, just in case someone does needs or
* wants to implement this.
*/
desc = NULL;
index = 0;
if (pgm->usbdev[0] == 'a' || pgm->usbdev[0] == 'A')
interface = INTERFACE_A;
else if (pgm->usbdev[0] == 'b' || pgm->usbdev[0] == 'B')
interface = INTERFACE_B;
else {
log_warn("Invalid interface '%s'. Setting to Interface A\n", pgm->usbdev);
interface = INTERFACE_A;
}
/****************
* Device setup *
****************/
E(ftdi_set_interface(pdata->ftdic, interface) < 0, pdata->ftdic);
err = ftdi_usb_open_desc_index(pdata->ftdic, vid, pid, desc, serial, index);
if(err) {
log_err("Error %d occurred: %s\n", err, ftdi_get_error_string(pdata->ftdic));
//stupid hack, because avrdude calls pgm->close() even when pgm->open() fails
//and usb_dev is initialized to the last usb device from probing
pdata->ftdic->usb_dev = NULL;
return err;
} else {
log_info("Using device VID:PID %04x:%04x and SN '%s' on interface %c.\n",
vid, pid, serial, INTERFACE_A == interface? 'A': 'B');
}
ftdi_set_latency_timer(pdata->ftdic, 1);
//ftdi_write_data_set_chunksize(pdata->ftdic, 16);
//ftdi_read_data_set_chunksize(pdata->ftdic, 16);
/* set SPI mode */
E(ftdi_set_bitmode(pdata->ftdic, 0, BITMODE_RESET) < 0, pdata->ftdic);
E(ftdi_set_bitmode(pdata->ftdic, pdata->pin_direction & 0xff, BITMODE_MPSSE) < 0, pdata->ftdic);
#ifdef HAVE_FTDI_TCIOFLUSH
E(ftdi_tcioflush(pdata->ftdic), pdata->ftdic);
#else
E(ftdi_usb_purge_buffers(pdata->ftdic), pdata->ftdic);
#endif
write_flush(pdata);
if (pgm->baudrate) {
set_frequency(pdata, pgm->baudrate);
} else if(pgm->bitclock) {
set_frequency(pdata, (uint32_t)(1.0f/pgm->bitclock));
} else {
set_frequency(pdata, pgm->baudrate ? pgm->baudrate : 150000);
}
/* set pin limit depending on chip type */
switch(pdata->ftdic->type) {
case TYPE_AM:
case TYPE_BM:
case TYPE_R:
log_err("Found unsupported device type AM, BM or R. avrftdi ");
log_err("cannot work with your chip. Try the 'synbb' programmer.\n");
return -1;
case TYPE_2232C:
pdata->pin_limit = 12;
pdata->rx_buffer_size = 384;
pdata->tx_buffer_size = 128;
break;
case TYPE_2232H:
pdata->pin_limit = 16;
pdata->rx_buffer_size = 4096;
pdata->tx_buffer_size = 4096;
break;
#ifdef HAVE_LIBFTDI_TYPE_232H
case TYPE_232H:
pdata->pin_limit = 16;
pdata->rx_buffer_size = 1024;
pdata->tx_buffer_size = 1024;
break;
#else
#ifdef _MSC_VER
#pragma message("No support for 232H, use a newer libftdi, version >= 0.20")
#else
#warning No support for 232H, use a newer libftdi, version >= 0.20
#endif
#endif
case TYPE_4232H:
pdata->pin_limit = 8;
pdata->rx_buffer_size = 2048;
pdata->tx_buffer_size = 2048;
break;
default:
log_warn("Found unknown device %x. I will do my ", pdata->ftdic->type);
log_warn("best to work with it, but no guarantees ...\n");
pdata->pin_limit = 8;
pdata->rx_buffer_size = pdata->ftdic->max_packet_size;
pdata->tx_buffer_size = pdata->ftdic->max_packet_size;
break;
}
if(avrftdi_pin_setup(pgm))
return -1;
/**********************************************
* set the ready LED and set our direction up *
**********************************************/
set_led_rdy(pgm,0);
set_led_pgm(pgm,1);
return 0;
}
static void avrftdi_close(PROGRAMMER * pgm)
{
avrftdi_t* pdata = to_pdata(pgm);
if(pdata->ftdic->usb_dev) {
set_pin(pgm, PIN_AVR_RESET, ON);
/* Stop driving the pins - except for the LEDs */
log_info("LED Mask=0x%04x value =0x%04x &=0x%04x\n",
pdata->led_mask, pdata->pin_value, pdata->led_mask & pdata->pin_value);
pdata->pin_direction = pdata->led_mask;
pdata->pin_value &= pdata->led_mask;
write_flush(pdata);
/* reset state recommended by FTDI */
ftdi_set_bitmode(pdata->ftdic, 0, BITMODE_RESET);
E_VOID(ftdi_usb_close(pdata->ftdic), pdata->ftdic);
}
return;
}
static int avrftdi_initialize(const PROGRAMMER *pgm, const AVRPART *p) {
avrftdi_powerup(pgm);
if(p->prog_modes & PM_TPI)
{
/* see avrftdi_tpi.c */
avrftdi_tpi_initialize(pgm, p);
}
else
{
set_pin(pgm, PIN_AVR_RESET, OFF);
set_pin(pgm, PIN_AVR_SCK, OFF);
/*use speed optimization with CAUTION*/
usleep(20 * 1000);
/* giving rst-pulse of at least 2 avr-clock-cycles, for
* security (2us @ 1MHz) */
set_pin(pgm, PIN_AVR_RESET, ON);
usleep(20 * 1000);
/*setting rst back to 0 */
set_pin(pgm, PIN_AVR_RESET, OFF);
/*wait at least 20ms before issuing spi commands to avr */
usleep(20 * 1000);
}
return pgm->program_enable(pgm, p);
}
static void avrftdi_display(const PROGRAMMER *pgm, const char *p) {
// print the full pin definitions as in ft245r ?
return;
}
static int avrftdi_cmd(const PROGRAMMER *pgm, const unsigned char *cmd, unsigned char *res) {
return avrftdi_transmit(pgm, MPSSE_DO_READ | MPSSE_DO_WRITE, cmd, res, 4);
}
static int avrftdi_program_enable(const PROGRAMMER *pgm, const AVRPART *p) {
int i;
unsigned char buf[4];
memset(buf, 0, sizeof(buf));
if (p->op[AVR_OP_PGM_ENABLE] == NULL) {
log_err("AVR_OP_PGM_ENABLE command not defined for %s\n", p->desc);
return -1;
}
avr_set_bits(p->op[AVR_OP_PGM_ENABLE], buf);
for(i = 0; i < 4; i++) {
pgm->cmd(pgm, buf, buf);
if (buf[p->pollindex-1] != p->pollvalue) {
log_warn("Program enable command not successful. Retrying.\n");
set_pin(pgm, PIN_AVR_RESET, ON);
usleep(20);
set_pin(pgm, PIN_AVR_RESET, OFF);
avr_set_bits(p->op[AVR_OP_PGM_ENABLE], buf);
} else
return 0;
}
log_err("Device is not responding to program enable. Check connection.\n");
return -1;
}
static int avrftdi_chip_erase(const PROGRAMMER *pgm, const AVRPART *p) {
unsigned char cmd[4];
unsigned char res[4];
if (p->op[AVR_OP_CHIP_ERASE] == NULL) {
log_err("AVR_OP_CHIP_ERASE command not defined for %s\n", p->desc);
return -1;
}
memset(cmd, 0, sizeof(cmd));
avr_set_bits(p->op[AVR_OP_CHIP_ERASE], cmd);
pgm->cmd(pgm, cmd, res);
usleep(p->chip_erase_delay);
pgm->initialize(pgm, p);
return 0;
}
/* Load extended address byte command */
static int
avrftdi_lext(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m, unsigned int address) {
/* nothing to do if load extended address command unavailable */
if(m->op[AVR_OP_LOAD_EXT_ADDR] == NULL)
return 0;
avrftdi_t *pdata = to_pdata(pgm);
unsigned char buf[] = { 0x00, 0x00, 0x00, 0x00 };
/* only send load extended address command if high byte changed */
if(pdata->lext_byte == (uint8_t) (address>>16))
return 0;
pdata->lext_byte = (uint8_t) (address>>16);
avr_set_bits(m->op[AVR_OP_LOAD_EXT_ADDR], buf);
avr_set_addr(m->op[AVR_OP_LOAD_EXT_ADDR], buf, address);
if(verbose > TRACE)
buf_dump(buf, sizeof(buf),
"load extended address command", 0, 16 * 3);
if (0 > avrftdi_transmit(pgm, MPSSE_DO_WRITE, buf, buf, 4))
return -1;
return 0;
}
static int avrftdi_eeprom_write(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
unsigned char cmd[] = { 0x00, 0x00, 0x00, 0x00 };
unsigned char *data = &m->buf[addr];
unsigned int add;
avr_set_bits(m->op[AVR_OP_WRITE], cmd);
for (add = addr; add < addr + len; add++)
{
avr_set_addr(m->op[AVR_OP_WRITE], cmd, add);
avr_set_input(m->op[AVR_OP_WRITE], cmd, *data++);
if (0 > avrftdi_transmit(pgm, MPSSE_DO_WRITE, cmd, cmd, 4))
return -1;
usleep((m->max_write_delay));
}
return len;
}
static int avrftdi_eeprom_read(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
unsigned char cmd[4];
unsigned int add;
unsigned char* buffer = alloca(len);
unsigned char* bufptr = buffer;
memset(buffer, 0, len);
for (add = addr; add < addr + len; add++)
{
memset(cmd, 0, sizeof(cmd));
avr_set_bits(m->op[AVR_OP_READ], cmd);
avr_set_addr(m->op[AVR_OP_READ], cmd, add);
if (0 > avrftdi_transmit(pgm, MPSSE_DO_READ | MPSSE_DO_WRITE, cmd, cmd, 4))
return -1;
avr_get_output(m->op[AVR_OP_READ], cmd, bufptr++);
}
memcpy(m->buf + addr, buffer, len);
return len;
}
static int avrftdi_flash_write(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
unsigned int word;
unsigned int poll_index;
unsigned char poll_byte;
unsigned char *buffer = &m->buf[addr];
unsigned int buf_size = 4 * len + 4;
unsigned char* buf = alloca(buf_size);
unsigned char* bufptr = buf;
memset(buf, 0, buf_size);
/* pre-check opcodes */
if (m->op[AVR_OP_LOADPAGE_LO] == NULL) {
log_err("AVR_OP_LOADPAGE_LO command not defined for %s\n", p->desc);
return -1;
}
if (m->op[AVR_OP_LOADPAGE_HI] == NULL) {
log_err("AVR_OP_LOADPAGE_HI command not defined for %s\n", p->desc);
return -1;
}
if(page_size != (unsigned int) m->page_size) {
log_warn("Parameter page_size is %d, ", page_size);
log_warn("but m->page_size is %d. Using the latter.\n", m->page_size);
}
page_size = m->page_size;
/* on large-flash devices > 128k issue extended address command when needed */
if(avrftdi_lext(pgm, p, m, addr/2) < 0)
return -1;
/* prepare the command stream for the whole page */
/* addr is in bytes, but we program in words. */
for(word = addr/2; word < (len + addr)/2; word++)
{
log_debug("-< bytes = %d of %d\n", word * 2, len + addr);
/*setting word*/
avr_set_bits(m->op[AVR_OP_LOADPAGE_LO], bufptr);
/* here is the second byte increment, just if you're wondering */
avr_set_addr(m->op[AVR_OP_LOADPAGE_LO], bufptr, word);
avr_set_input(m->op[AVR_OP_LOADPAGE_LO], bufptr, *buffer++);
bufptr += 4;
avr_set_bits(m->op[AVR_OP_LOADPAGE_HI], bufptr);
avr_set_addr(m->op[AVR_OP_LOADPAGE_HI], bufptr, word);
avr_set_input(m->op[AVR_OP_LOADPAGE_HI], bufptr, *buffer++);
bufptr += 4;
}
/* issue write page command, if available */
if (m->op[AVR_OP_WRITEPAGE] == NULL) {
log_err("AVR_OP_WRITEPAGE command not defined for %s\n", p->desc);
return -1;
} else {
avr_set_bits(m->op[AVR_OP_WRITEPAGE], bufptr);
/* setting page address highbyte */
avr_set_addr(m->op[AVR_OP_WRITEPAGE],
bufptr, addr/2);
bufptr += 4;
}
/* find a poll byte. We cannot poll a value of 0xff, so look
* for a value != 0xff
*/
for(poll_index = addr+len-1; poll_index+1 > addr; poll_index--)
if(m->buf[poll_index] != 0xff)
break;
if(poll_index+1 > addr) {
buf_size = bufptr - buf;
if(verbose > TRACE)
buf_dump(buf, buf_size, "command buffer", 0, 16*2);
log_info("Transmitting buffer of size: %d\n", buf_size);
if (0 > avrftdi_transmit(pgm, MPSSE_DO_WRITE, buf, buf, buf_size))
return -1;
bufptr = buf;
log_info("Using m->buf[%d] = 0x%02x as polling value ", poll_index,
m->buf[poll_index]);
/* poll page write ready */
do {
log_info(".");
pgm->read_byte(pgm, p, m, poll_index, &poll_byte);
} while (m->buf[poll_index] != poll_byte);
log_info("\n");
}
else
{
log_warn("Skipping empty page (containing only 0xff bytes)\n");
/* TODO sync write */
/* sleep */
usleep((m->max_write_delay));
}
return len;
}
/*
*Reading from flash
*/
static int avrftdi_flash_read(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
OPCODE * readop;
unsigned int buf_size = 4 * len + 4;
unsigned char* o_buf = alloca(buf_size);
unsigned char* i_buf = alloca(buf_size);
memset(o_buf, 0, buf_size);
memset(i_buf, 0, buf_size);
/* pre-check opcodes */
if (m->op[AVR_OP_READ_LO] == NULL) {
log_err("AVR_OP_READ_LO command not defined for %s\n", p->desc);
return -1;
}
if (m->op[AVR_OP_READ_HI] == NULL) {
log_err("AVR_OP_READ_HI command not defined for %s\n", p->desc);
return -1;
}
if(avrftdi_lext(pgm, p, m, addr/2) < 0)
return -1;
/* word addressing! */
for(unsigned int word = addr/2, index = 0; word < (addr + len)/2; word++)
{
/* one byte is transferred via a 4-byte opcode.
* TODO: reduce magic numbers
*/
avr_set_bits(m->op[AVR_OP_READ_LO], &o_buf[index*4]);
avr_set_addr(m->op[AVR_OP_READ_LO], &o_buf[index*4], word);
index++;
avr_set_bits(m->op[AVR_OP_READ_HI], &o_buf[index*4]);
avr_set_addr(m->op[AVR_OP_READ_HI], &o_buf[index*4], word);
index++;
}
/* transmit,
* if there was an error, we did not see, memory validation will
* subsequently fail.
*/
if(verbose > TRACE) {
buf_dump(o_buf, sizeof(o_buf), "o_buf", 0, 32);
}
if (0 > avrftdi_transmit(pgm, MPSSE_DO_READ | MPSSE_DO_WRITE, o_buf, i_buf, len * 4))
return -1;
if(verbose > TRACE) {
buf_dump(i_buf, sizeof(i_buf), "i_buf", 0, 32);
}
memset(&m->buf[addr], 0, page_size);
/* every (read) op is 4 bytes in size and yields one byte of memory data */
for(unsigned int byte = 0; byte < page_size; byte++) {
if(byte & 1)
readop = m->op[AVR_OP_READ_HI];
else
readop = m->op[AVR_OP_READ_LO];
/* take 4 bytes and put the memory byte in the buffer at
* offset addr + offset of the current byte
*/
avr_get_output(readop, &i_buf[byte*4], &m->buf[addr+byte]);
}
if(verbose > TRACE)
buf_dump(&m->buf[addr], page_size, "page:", 0, 32);
return len;
}
static int avrftdi_paged_write(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int n_bytes)
{
if (strcmp(m->desc, "flash") == 0)
return avrftdi_flash_write(pgm, p, m, page_size, addr, n_bytes);
else if (strcmp(m->desc, "eeprom") == 0)
return avrftdi_eeprom_write(pgm, p, m, page_size, addr, n_bytes);
else
return -2;
}
static int avrftdi_paged_load(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int n_bytes)
{
if (strcmp(m->desc, "flash") == 0)
return avrftdi_flash_read(pgm, p, m, page_size, addr, n_bytes);
else if(strcmp(m->desc, "eeprom") == 0)
return avrftdi_eeprom_read(pgm, p, m, page_size, addr, n_bytes);
else
return -2;
}
static void
avrftdi_setup(PROGRAMMER * pgm)
{
avrftdi_t* pdata;
if(!(pgm->cookie = calloc(sizeof(avrftdi_t), 1))) {
log_err("Error allocating memory.\n");
exit(1);
}
pdata = to_pdata(pgm);
pdata->ftdic = ftdi_new();
if(!pdata->ftdic)
{
log_err("Error allocating memory.\n");
exit(1);
}
E_VOID(ftdi_init(pdata->ftdic), pdata->ftdic);
pdata->pin_value = 0;
pdata->pin_direction = 0;
pdata->led_mask = 0;
pdata->lext_byte = 0xff;
}
static void
avrftdi_teardown(PROGRAMMER * pgm)
{
avrftdi_t* pdata = to_pdata(pgm);
if(pdata) {
ftdi_deinit(pdata->ftdic);
ftdi_free(pdata->ftdic);
free(pdata);
}
}
void avrftdi_initpgm(PROGRAMMER *pgm) {
strcpy(pgm->type, "avrftdi");
/*
* mandatory functions
*/
pgm->initialize = avrftdi_initialize;
pgm->display = avrftdi_display;
pgm->enable = avrftdi_enable;
pgm->disable = avrftdi_disable;
pgm->powerup = avrftdi_powerup;
pgm->powerdown = avrftdi_powerdown;
pgm->program_enable = avrftdi_program_enable;
pgm->chip_erase = avrftdi_chip_erase;
pgm->cmd = avrftdi_cmd;
pgm->open = avrftdi_open;
pgm->close = avrftdi_close;
pgm->read_byte = avr_read_byte_default;
pgm->write_byte = avr_write_byte_default;
/*
* optional functions
*/
pgm->paged_write = avrftdi_paged_write;
pgm->paged_load = avrftdi_paged_load;
pgm->setpin = set_pin;
pgm->setup = avrftdi_setup;
pgm->teardown = avrftdi_teardown;
pgm->rdy_led = set_led_rdy;
pgm->err_led = set_led_err;
pgm->pgm_led = set_led_pgm;
pgm->vfy_led = set_led_vfy;
}
#endif /* DO_NOT_BUILD_AVRFTDI */
const char avrftdi_desc[] = "Interface to the MPSSE Engine of FTDI Chips using libftdi.";
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