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avrdude/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 "avr.h"
#include "pgm.h"
#include "avrftdi.h"
#include "avrpart.h"
#include "tpi.h"
#include "usbasp.h"
#ifdef HAVE_LIBUSB_1_0
#ifdef HAVE_LIBFTDI1
#include <libusb-1.0/libusb.h>
#include <libftdi1/ftdi.h>
enum { FTDI_SCK = 1, FTDI_MOSI, FTDI_MISO, FTDI_RESET };
#define FTDI_DEFAULT_MASK ( (1 << (FTDI_SCK - 1)) | (1 << (FTDI_MOSI - 1)) )
#define E(x, ftdi) \
do { \
if ((x)) \
{ \
fprintf(stderr, "%s:%d %s() %s: %s (%d)\n\t%s\n", \
__FILE__, __LINE__, __FUNCTION__, \
#x, strerror(errno), errno, ftdi_get_error_string(ftdi)); \
return -1; \
} \
} while(0);
#define E_VOID(x, ftdi) \
do { \
if ((x)) \
{ \
fprintf(stderr, "%s:%d %s() %s: %s (%d)\n\t%s\n", \
__FILE__, __LINE__, __FUNCTION__, \
#x, strerror(errno), errno, ftdi_get_error_string(ftdi)); \
} \
} while(0);
#define to_pdata(pgm) \
((avrftdi_t *)((pgm)->cookie))
/* This is for running the code without having a FTDI-device.
* The generated code is useless! For debugging purposes only.
* This should never be defined, unless you know what you are
* doing.
* If you think you know what you are doing: YOU DONT!
*/
//#define DRYRUN
typedef struct avrftdi_s {
/* pointer to struct maintained by libftdi to identify the device */
struct ftdi_context* ftdic;
/* bitmask of values for pins. bit 0 represents pin 0 ([A|B]DBUS0) */
uint16_t pin_value;
/* bitmask of pin direction. a '1' make a pin an output.
* bit 0 corresponds to pin 0. */
uint16_t pin_direction;
/* don't know. not useful. someone put it in. */
uint16_t led_mask;
/* total number of pins supported by a programmer. varies with FTDI chips */
int pin_limit;
} avrftdi_t;
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, int pin)
{
static char pin_name[16];
char interface = '@';
char port;
/* 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;
/* This is FTDI's naming scheme.
* probably 'D' is for data and 'C' for control
*/
if(pin <= 8)
port = 'D';
else
port = 'C';
snprintf(pin_name, sizeof(pin_name), "%c%cBUS%d", interface, port, pin-1);
return pin_name;
}
/*
* output function, to save if(vebose>level)-constructs. also prefixes output
* with "avrftdi" to identify were messages came from.
* TODO: make this a macro, so that __LINE_ and __func__ macros can be used.
*/
static void
avrftdi_print(int level, const char * fmt, ...)
{
va_list ap;
if(verbose >= level)
{
fprintf(stderr, "avrftdi: ");
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
}
/*
* 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(unsigned char *buf, int len, char *desc,
int offset, int width)
{
int i;
fprintf(stderr, "%s begin:\n", desc);
for (i = 0; i < offset; i++)
fprintf(stderr, "%02x ", buf[i]);
fprintf(stderr, "\n");
for (i++; i <= len; i++) {
fprintf(stderr, "%02x ", buf[i-1]);
if((i-offset) != 0 && (i-offset)%width == 0)
fprintf(stderr, "\n");
}
fprintf(stderr, "%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)
{
uint32_t divisor;
uint8_t buf[3];
/* divisor on 6000000 / freq - 1 */
divisor = (6000000 / freq) - 1;
if (divisor < 0) {
fprintf(stderr,
"%s failure: Frequency too high (%u > 6 MHz)\n",
progname, freq);
fprintf(stderr,
"resetting Frequency to 6MHz\n");
divisor = 0;
}
if (divisor > 65535) {
fprintf(stderr,
"%s failure: Frequency too low (%u < 91.553 Hz)\n",
progname, freq);
fprintf(stderr,
"resetting Frequency to 91.553Hz\n");
divisor = 65535;
}
avrftdi_print(0, "frequency: %d\n", 6000000/(divisor+1));
avrftdi_print(1, "clock divisor: 0x%04x\n", divisor);
buf[0] = TCK_DIVISOR;
buf[1] = (uint8_t)(divisor & 0xff);
buf[2] = (uint8_t)((divisor >> 8) & 0xff);
#ifndef DRYRUN
E(ftdi_write_data(ftdi->ftdic, buf, 3) < 0, ftdi->ftdic);
#endif
return 0;
}
/*
* Adds a single pin to the direction mask and sets the pin state inactive in
* the value mask. the value of 'inactive' is chosen according to the pin
* configuration (high or low active).
*/
static int add_pin(PROGRAMMER *pgm, int pinfunc)
{
int pin, pin_mask, inverted, fail;
avrftdi_t* pdata = to_pdata(pgm);
fail = 0;
pin = pgm->pinno[pinfunc] & PIN_MASK;
inverted = pgm->pinno[pinfunc] & PIN_INVERSE;
pin_mask = (1 << (pin - 1));
/* not configured */
if(!pin)
{
avrftdi_print(0, "Pin %s not configured\n", avr_pin_name(pinfunc));
return 0;
}
/* check that the pin number is in range */
if (pin > pdata->pin_limit)
{
fprintf(stderr,
"%s invalid pin definition for pin %s. Configured as pin %d, but highest pin is %d.\n",
progname, avr_pin_name(pinfunc), pin, pdata->pin_limit);
fail = 1;
}
/* check if the pin is still available */
if (pdata->pin_direction & pin_mask)
{
fprintf(stderr,
"%s failure: pin %d (%s) is used twice. The second use is %s.\n",
progname, pin, ftdi_pin_name(pdata, pin), avr_pin_name(pinfunc));
fail = 1;
}
/*
* No need to fail for a wrongly configured led.
* MISO, MOSI and SCK are fixed and correctly set during setup.
* Maybe we should fail for wrongly configured VCC or BUFF pins?
*/
if(fail)
{
if(pinfunc == PIN_AVR_RESET)
{
fprintf(stderr, "Aborting, since the reset pin is wrongly configured\n");
return -1;
}
else
{
fprintf(stdout, "Ignoring wrongly configured pin.\n");
return 0;
}
}
/* all checks passed - do actual work */
avrftdi_print(0, "Configure pin %d (%s) as %s (%s active)\n",
pin, ftdi_pin_name(pdata, pin),
avr_pin_name(pinfunc), (inverted) ? "low": "high");
{
/* create mask */
pdata->pin_direction |= pin_mask;
/* and set default value */
if(inverted)
pdata->pin_value |= pin_mask;
else
pdata->pin_value &= ~(pin_mask);
}
if(PIN_LED_ERR == pinfunc ||
PIN_LED_VFY == pinfunc ||
PIN_LED_RDY == pinfunc ||
PIN_LED_PGM == pinfunc) {
pdata->led_mask |= pin_mask;
}
return 0;
}
/*
* Add pins by pin mask
* Check an entire mask for correctness and plausibility. Performed checks are
* the pin number is lower that the total number of pins and the pin is not
* configured yet.
* If at least one test fails, the entire mask is discarded.
* These basic tests could possibly moved to avrdude core, since it does not
* contain any tests (as far as I can tell).
*/
static int add_pins(PROGRAMMER *pgm, int pinfunc)
{
int pin, inverted, fail;
uint32_t pin_mask, pin_bit;
avrftdi_t* pdata = to_pdata(pgm);
pin_mask = (pgm->pinno[pinfunc] & PIN_MASK) >> 1;
/* FIXME: I think you cannot inverse these multi-pin options */
inverted = pgm->pinno[pinfunc] & PIN_INVERSE;
if(!pin_mask)
{
avrftdi_print(0, "Pins for %s not configured.\n", avr_pin_name(pinfunc));
return 0;
}
fail = 0;
/* check every configured pin */
for(pin = 0; (1 << pin) & (PIN_MASK); pin++)
{
pin_bit = 1 << pin;
/* skip, if this pin is not in the mask to be configured */
if(!(pin_bit & pin_mask))
continue;
/* 0 is not a valid pin, see above, we use 1 << (pin - 1) to create pin_bit */
if(pin + 1 > pdata->pin_limit)
{
fprintf(stderr,
"%s invalid pin definition for pin %s. Configured as pin %d, but highest pin is %d.\n",
progname, avr_pin_name(pinfunc), pin + 1, pdata->pin_limit);
fail = 1;
}
if(pin_bit & pdata->pin_direction)
{
fprintf(stderr,
"%s failure: pin %d (%s) is used twice. The second use is %s.\n",
progname, pin, ftdi_pin_name(pdata, pin), avr_pin_name(pinfunc));
fail = 1;
}
}
/* we can ignore those, because only VCC and BUFF pins, can have multiples.
* VCC and BUFF are not essential
*/
if(fail)
{
fprintf(stdout, "Ignoring wrongly configured pins.\n");
return 0;
}
/* conditional output */
for(pin = 0; (1 << pin) & (PIN_MASK); pin++)
{
pin_bit = 1 << pin;
/* skip if pin is not set */
if(!(pin_bit & pin_mask))
continue;
/* remember, we count from 1, not 0 */
avrftdi_print(0, "Configured pin %d (%s) as %s (%s active)\n",
pin+1, ftdi_pin_name(pdata, pin+1),
avr_pin_name(pinfunc), (inverted) ? "low": "high");
}
/* do the work */
pdata->pin_direction |= (uint16_t)pin_mask;
if(inverted)
pdata->pin_value |= pin_mask;
else
pdata->pin_value &= ~pin_mask;
return 0;
}
/*
* This function sets or clears any pin, except SCK, MISO and MOSI. 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(PROGRAMMER * pgm, int pinfunc, int value)
{
int pin, pin_mask;
int inverted;
avrftdi_t* pdata = to_pdata(pgm);
pin = pgm->pinno[pinfunc] & PIN_MASK;
inverted = pgm->pinno[pinfunc] & PIN_INVERSE;
pin_mask = 1 << (pin - 1);
/* make value 0 or 1 and invert, if necessary */
value = (inverted) ? !value : !!value;
if (!pin) {
/* this error message is really annoying, maybe use a ratelimit? */
/*
avrftdi_print(2, "%s info: Pin is zero, value: %d!\n",
progname, value);
*/
return 1;
}
if (value)
value = pin_mask;
avrftdi_print(1, "Setting pin %d (%s) as %s: %s (%s active)\n", pin,
ftdi_pin_name(pdata, pin), avr_pin_name(pinfunc),
(value) ? "high" : "low", (inverted) ? "low" : "high");
/* set bits depending on value */
//tval = (pdata->pin_value & (~pin_mask)) | pin_mask;
pdata->pin_value ^= (-value ^ pdata->pin_value) & pin_mask;
//fprintf(stderr, "%x %x\n", tval, pdata->pin_value);
return write_flush(pdata);
}
/*
* This function sets or clears a group of pins - VCC or BUFF.
* the semantics are the same as for single pins, described above.
*/
static int set_pins(PROGRAMMER * pgm, int pinfunc, int value)
{
int pin, pin_mask;
int inverted;
int pin_bit;
avrftdi_t* pdata = to_pdata(pgm);
pin = pgm->pinno[pinfunc] & PIN_MASK;
inverted = pgm->pinno[pinfunc] & PIN_INVERSE;
pin_mask = pin >> 1;
value = (inverted) ? !value : !!value;
if (!pin) {
/* dito above */
return 1;
}
if(value)
value = pin_mask;
/* conditional output */
for(pin = 0; (1 << pin) & (PIN_MASK); pin++)
{
pin_bit = 1 << pin;
/* skip if pin is not set */
if(!(pin_bit & pin_mask))
continue;
/* remember, we count from 1, not 0 */
avrftdi_print(0, "Setting pin %d (%s) as %s: %s (%s active)\n",
pin+1, ftdi_pin_name(pdata, pin+1), avr_pin_name(pinfunc),
(value) ? "high" : "low", (inverted) ? "low": "high");
}
/* set bits depending on value */
/*pin_value ^= (-value ^ pin_value) & (1 << (pin - 1)); */
pdata->pin_value ^= (-value ^ pdata->pin_value) & pin_mask;
/*pdata->pin_value = (pdata->pin_value & (~pin_mask)) | value;*/
return write_flush(pdata);
}
/* these functions are callbacks, which go into the
* PROGRAMMER data structure ("optional functions")
*/
static int set_led_pgm(struct programmer_t * pgm, int value)
{
return set_pin(pgm, PIN_LED_PGM, value);
}
static int set_led_rdy(struct programmer_t * pgm, int value)
{
return set_pin(pgm, PIN_LED_RDY, value);
}
static int set_led_err(struct programmer_t * pgm, int value)
{
return set_pin(pgm, PIN_LED_ERR, value);
}
static int set_led_vfy(struct programmer_t * pgm, int value)
{
return set_pin(pgm, PIN_LED_VFY, value);
}
/* 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_READ.
*/
static int avrftdi_transmit(avrftdi_t* pdata, unsigned char mode, unsigned char *cmd,
unsigned char *data, int buf_size)
{
int k = 0;
int n;
unsigned char buf[4 + buf_size];
if (mode & MPSSE_DO_WRITE) {
buf[0] = mode | MPSSE_WRITE_NEG;
buf[1] = ((buf_size - 1) & 0xff);
buf[2] = (((buf_size - 1) >> 8) & 0xff);
memcpy(buf + 3, cmd, buf_size);
buf[buf_size + 3] = 0x87;
#ifndef DRYRUN
E(ftdi_write_data(pdata->ftdic, buf, buf_size + 4) != buf_size + 4, pdata->ftdic);
#endif
}
if (mode & MPSSE_DO_READ) {
memset(buf, 0, sizeof(buf));
do {
#ifndef DRYRUN
n = ftdi_read_data(pdata->ftdic, buf + k, buf_size - k);
E(n < 0, pdata->ftdic);
#else
n = buf_size - k;
#endif
k += n;
} while (k < buf_size);
memcpy(data, buf, buf_size);
}
return k;
}
static int write_flush(avrftdi_t* pdata)
{
unsigned char buf[6];
avrftdi_print(2,
"%s info: direction: 0x%04x, value: 0x%04x\n",
progname, 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;
#ifndef DRYRUN
E(ftdi_write_data(pdata->ftdic, buf, 6) != 6, pdata->ftdic);
#endif
avrftdi_print(3, "FTDI LOG: %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 unkown, when the purge
* command actually arrives at the chip.
* Use read-pin-status command as sync.
*/
#ifndef DRYRUN
//E(ftdi_usb_purge_buffers(pdata->ftdic), pdata->ftdic);
unsigned char cmd[] = { GET_BITS_LOW, SEND_IMMEDIATE };
unsigned int n;
int num = 0;
E(ftdi_write_data(pdata->ftdic, cmd, sizeof(cmd)) != sizeof(cmd), pdata->ftdic);
do
{
n = ftdi_read_data(pdata->ftdic, cmd, 1);
E(n < 0, pdata->ftdic);
} while(n < 1);
#endif
return 0;
}
static int avrftdi_open(PROGRAMMER * pgm, char *port)
{
int vid, pid, interface, index, err;
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 = 0x0403;
if (pgm->usbpid)
pid = pgm->usbpid;
else
pid = 0x6010;
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 {
fprintf(stderr,
"%s: Invalid interface '%s'. Setting to Interface A\n",
progname, 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) {
avrftdi_print(0, "Error %d occured: %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 intialized to the last usb device from probing
pdata->ftdic->usb_dev = NULL;
return err;
} else {
avrftdi_print(1,
"Using device VID:PID %04x:%04x and SN '%s' on interface %c.\n",
vid, pid, serial, INTERFACE_A == interface? 'A': 'B');
}
//E(ftdi_usb_open_dev(pdata->ftdic, found_dev) <0, pdata->ftdic);
ftdi_set_latency_timer(pdata->ftdic, 1);
/* 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);
E(ftdi_usb_purge_buffers(pdata->ftdic), pdata->ftdic);
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);
}
/*************
* pin setup *
*************/
if ( FTDI_SCK != pgm->pinno[PIN_AVR_SCK]
|| FTDI_MOSI != pgm->pinno[PIN_AVR_MOSI]
|| FTDI_MISO != pgm->pinno[PIN_AVR_MISO])
{
fprintf(stderr, "%s failure: pinning for FTDI MPSSE must be:\n", progname);
fprintf(stderr, "\t%s: 1, %s: 2, %s: 3(is: %d,%d,%d)\n",
avr_pin_name(PIN_AVR_SCK), avr_pin_name(PIN_AVR_MOSI),
avr_pin_name(PIN_AVR_MISO), pgm->pinno[PIN_AVR_SCK],
pgm->pinno[PIN_AVR_MOSI], pgm->pinno[PIN_AVR_MISO]);
fprintf(stderr, "Setting pins accordingly ...\n");
pgm->pinno[PIN_AVR_SCK] = FTDI_SCK;
pgm->pinno[PIN_AVR_MOSI] = FTDI_MOSI;
pgm->pinno[PIN_AVR_MISO] = FTDI_MISO;
}
avrftdi_print(1, "reset pin value: %x\n", pgm->pinno[PIN_AVR_RESET]-1);
if ( pgm->pinno[PIN_AVR_RESET] < FTDI_RESET
|| pgm->pinno[PIN_AVR_RESET] == 0)
{
fprintf(stderr,
"%s failure: RESET pin clashes with data pin or is not set.\n",
progname);
fprintf(stderr, "Setting to default-value 4\n");
pgm->pinno[PIN_AVR_RESET] = FTDI_RESET;
}
//pdata->pin_direction = (0x3 | (1 << (pgm->pinno[PIN_AVR_RESET] - 1)));
/* set pin limit depending on chip type */
switch(pdata->ftdic->type) {
#if 0
//TODO: issue an error - no MPSSE. hint the user to syncbb?
case TYPE_AM:
case TYPE_BM:
case TYPE_R:
#endif
case TYPE_2232C:
pdata->pin_limit = 11;
break;
case TYPE_2232H:
case TYPE_232H:
pdata->pin_limit = 15;
break;
case TYPE_4232H:
pdata->pin_limit = 7;
break;
default:
//TODO: error/unsupported device
break;
}
/* add SCK, MOSI and RESET as output pins - MISO needs no configuration */
if (add_pin(pgm, PIN_AVR_SCK)) return -1;
if (add_pin(pgm, PIN_AVR_MOSI)) return -1;
if (add_pin(pgm, PIN_AVR_RESET)) return -1;
/* gather the rest of the pins */
if (add_pins(pgm, PPI_AVR_VCC)) return -1;
if (add_pins(pgm, PPI_AVR_BUFF)) return -1;
if (add_pin(pgm, PIN_LED_ERR)) return -1;
if (add_pin(pgm, PIN_LED_RDY)) return -1;
if (add_pin(pgm, PIN_LED_PGM)) return -1;
if (add_pin(pgm, PIN_LED_VFY)) return -1;
avrftdi_print(1, "pin direction mask: %04x\n", pdata->pin_direction);
avrftdi_print(1, "pin value mask: %04x\n", pdata->pin_value);
/**********************************************
* 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_pins(pgm, PPI_AVR_BUFF, ON);
set_pin(pgm, PIN_AVR_RESET, ON);
/**Stop driving the pins - except for the LEDs */
avrftdi_print(1, "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);
#ifndef DRYRUN
/* reset state recommended by FTDI */
ftdi_set_bitmode(pdata->ftdic, 0, BITMODE_RESET);
E_VOID(ftdi_usb_close(pdata->ftdic), pdata->ftdic);
#endif
}
return;
}
static int avrftdi_initialize(PROGRAMMER * pgm, AVRPART * p)
{
avrftdi_t* pdata = to_pdata(pgm);
set_pin(pgm, PIN_AVR_RESET, OFF);
set_pins(pgm, PPI_AVR_BUFF, 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 bevor issuing spi commands to avr */
usleep(20 * 1000);
return pgm->program_enable(pgm, p);
}
static void avrftdi_disable(PROGRAMMER * pgm)
{
return;
}
static void avrftdi_enable(PROGRAMMER * pgm)
{
return;
}
static void avrftdi_display(PROGRAMMER * pgm, const char *p)
{
return;
}
static int avrftdi_cmd(PROGRAMMER * pgm, unsigned char cmd[4], unsigned char res[4])
{
/* Do not use 'sizeof(cmd)'. => message from cppcheck:
Using sizeof for array given as function argument returns the size of pointer. */
return avrftdi_transmit(to_pdata(pgm), MPSSE_DO_READ | MPSSE_DO_WRITE, cmd, res, 4);
}
static int avrftdi_program_enable(PROGRAMMER * pgm, AVRPART * p)
{
int i;
unsigned char buf[4];
memset(buf, 0, sizeof(buf));
if (p->op[AVR_OP_PGM_ENABLE] == NULL) {
fprintf(stderr,
"%s failure: Program Enable (PGM_ENABLE) command not defined for %s\n",
progname, 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) {
//try resetting
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;
}
#ifndef DRYRUN
return -1;
#else
return 0;
#endif
}
static int avrftdi_chip_erase(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
if (p->op[AVR_OP_CHIP_ERASE] == NULL) {
fprintf(stderr,
"%s failure Chip Erase (CHIP_ERASE) command not defined for %s\n",
progname, 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(avrftdi_t* pdata, AVRPART *p, AVRMEM *m, unsigned int address)
{
unsigned char buf[] =
{ MPSSE_DO_WRITE | MPSSE_WRITE_NEG, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00 };
avr_set_bits(m->op[AVR_OP_LOAD_EXT_ADDR], &buf[3]);
avr_set_addr(m->op[AVR_OP_LOAD_EXT_ADDR], &buf[3], address);
if(verbose > 1)
buf_dump(buf, sizeof(buf),
"load extended address command", 0, 16 * 3);
#ifndef DRYRUN
E(ftdi_write_data(pdata->ftdic, buf, sizeof(buf)) != sizeof(buf),
pdata->ftdic);
#endif
return 0;
}
static int avrftdi_eeprom_write(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
unsigned char cmd[] =
{ MPSSE_DO_WRITE | MPSSE_WRITE_NEG, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00 };
unsigned char *data = &m->buf[addr];
unsigned int add;
avr_set_bits(m->op[AVR_OP_WRITE], &cmd[3]);
for (add = addr; add < addr + len; add++)
{
avr_set_addr(m->op[AVR_OP_WRITE], &cmd[3], add);
avr_set_input(m->op[AVR_OP_WRITE], &cmd[3], *data++);
E(ftdi_write_data(to_pdata(pgm)->ftdic, cmd, sizeof(cmd)) != sizeof(cmd),
to_pdata(pgm)->ftdic);
usleep((m->max_write_delay));
}
return len;
}
static int avrftdi_eeprom_read(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
unsigned char cmd[4];
unsigned char buffer[len], *bufptr = buffer;
unsigned int add;
memset(buffer, 0, sizeof(buffer));
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);
avrftdi_transmit(to_pdata(pgm), MPSSE_DO_READ | MPSSE_DO_WRITE, cmd, cmd, 4);
avr_get_output(m->op[AVR_OP_READ], cmd, bufptr++);
}
memcpy(m->buf + addr, buffer, len);
return len;
}
static int avrftdi_flash_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
int use_lext_address = m->op[AVR_OP_LOAD_EXT_ADDR] != NULL;
unsigned int word;
unsigned int poll_index;
unsigned int buf_size;
unsigned char poll_byte;
unsigned char *buffer = &m->buf[addr];
unsigned char buf[4*len+4], *bufptr = buf;
memset(buf, 0, sizeof(buf));
/* pre-check opcodes */
if (m->op[AVR_OP_LOADPAGE_LO] == NULL) {
fprintf(stderr,
"%s failure: %s command not defined for %s\n",
progname, "AVR_OP_LOADPAGE_LO", p->desc);
return -1;
}
if (m->op[AVR_OP_LOADPAGE_HI] == NULL) {
fprintf(stderr,
"%s failure: %s command not defined for %s\n",
progname, "AVR_OP_LOADPAGE_HI", p->desc);
return -1;
}
if(page_size != m->page_size) {
fprintf(stderr,
"%s: Something funny is going on. Parameter"
"page_size is %d, buf m->page_size is %d. Using"
"the latter.\n", progname, page_size, m->page_size);
}
page_size = m->page_size;
/* if we do cross a 64k word boundary (or write the
* first page), we need to issue a 'load extended
* address byte' command, which is defined as 0x4d
* 0x00 <address byte> 0x00. As far as i know, this
* is only available on 256k parts. 64k word is 128k
* bytes.
* write the command only once.
*/
if(use_lext_address && (((addr/2) & 0xffff0000))) {
avrftdi_lext(to_pdata(pgm), p, m, addr/2);
}
/* prepare the command stream for the whole page */
/* addr is in bytes, but we program in words. addr/2 should be something
* like addr >> WORD_SHIFT, though */
for(word = addr/2; word < (len + addr)/2; word++)
{
avrftdi_print(2, "-< 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) {
fprintf(stderr,
"%s failure: Write Page (WRITEPAGE) command not defined for %s\n",
progname, p->desc);
//FIXME: maybe not exit but return error code
exit(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;
}
buf_size = bufptr - buf;
if(verbose > 3)
buf_dump(buf, buf_size, "command buffer", 0, 16*2);
avrftdi_print(2, "%s info: buffer size: %d\n", progname, buf_size);
avrftdi_transmit(to_pdata(pgm), MPSSE_DO_WRITE, buf, buf, buf_size);
bufptr = buf;
/* 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 > addr-1; poll_index--)
if(m->buf[poll_index] != 0xff)
break;
if((poll_index < addr + len) && m->buf[poll_index] != 0xff)
{
avrftdi_print(2, "%s: using m->buf[%d] = 0x%02x as polling value ",
progname, poll_index, m->buf[poll_index]);
/* poll page write ready */
do {
avrftdi_print(2, ".");
pgm->read_byte(pgm, p, m, poll_index, &poll_byte);
} while (m->buf[poll_index] != poll_byte);
avrftdi_print(2, "\n");
}
else
{
fprintf(stderr, "%s: no suitable byte (!=0xff) for polling found.\n", progname);
fprintf(stderr, "%s: trying to sleep, but programming errors may occur.\n", progname);
fprintf(stderr, "%s: be sure to verify programmed memory (no -V option)\n", progname);
/* TODO sync write */
/* sleep */
usleep((m->max_write_delay));
}
return len;
}
/*
*Reading from flash
*/
static int avrftdi_flash_read(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
unsigned int page_size, unsigned int addr, unsigned int len)
{
OPCODE * readop;
int byte, word;
int use_lext_address = m->op[AVR_OP_LOAD_EXT_ADDR] != NULL;
unsigned int address = addr/2;
unsigned char o_buf[4*len+4];
unsigned char i_buf[4*len+4];
unsigned int index;
memset(o_buf, 0, sizeof(o_buf));
memset(i_buf, 0, sizeof(i_buf));
/* pre-check opcodes */
if (m->op[AVR_OP_READ_LO] == NULL) {
fprintf(stderr,
"%s failure: %s command not defined for %s\n",
progname, "AVR_OP_READ_LO", p->desc);
return -1;
}
if (m->op[AVR_OP_READ_HI] == NULL) {
fprintf(stderr,
"%s failure: %s command not defined for %s\n",
progname, "AVR_OP_READ_HI", p->desc);
return -1;
}
if(use_lext_address && ((address & 0xffff0000))) {
avrftdi_lext(to_pdata(pgm), p, m, address);
}
/* word addressing! */
for(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 > 2) {
buf_dump(o_buf, sizeof(o_buf), "o_buf", 0, 32);
}
avrftdi_transmit(to_pdata(pgm), MPSSE_DO_READ | MPSSE_DO_WRITE, o_buf, i_buf, len * 4);
if(verbose > 2) {
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(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 > 2)
buf_dump(&m->buf[addr], page_size, "page:", 0, 32);
return len;
}
static int avrftdi_paged_write(PROGRAMMER * pgm, AVRPART * p, 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(PROGRAMMER * pgm, AVRPART * p, 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;
pgm->cookie = malloc(sizeof(avrftdi_t));
pdata = to_pdata(pgm);
#ifndef DRYRUN
pdata->ftdic = ftdi_new();
if(!pdata->ftdic)
{
fprintf(stderr, "%s: Error allocating memory.\n", progname);
exit(-ENOMEM);
}
E_VOID(ftdi_init(pdata->ftdic), pdata->ftdic);
#endif
pdata->pin_value = 0;
pdata->pin_direction = 0;
pdata->led_mask = 0;
}
static void
avrftdi_teardown(PROGRAMMER * pgm)
{
avrftdi_t* pdata = to_pdata(pgm);
#ifndef DRYRUN
ftdi_deinit(pdata->ftdic);
ftdi_free(pdata->ftdic);
#endif
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->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->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;
}
#else /*HAVE_LIBFTDI1*/
static int avrftdi_noftdi_open (struct programmer_t *pgm, char * name)
{
fprintf(stderr,
"%s: Error: no libftdi1 support. Install libftdi1 and run configure/make again.\n",
progname);
exit(1);
}
void avrftdi_initpgm(PROGRAMMER * pgm)
{
strcpy(pgm->type, "avrftdi");
pgm->open = avrftdi_noftdi_open;
}
#endif /* HAVE_LIBFTDI1 */
#else /*HAVE_LIBUSB_1_0*/
static int avrftdi_nousb_open (struct programmer_t *pgm, char * name)
{
fprintf(stderr,
"%s: Error: no USB support. Install libusb-1.0 and run configure/make again.\n",
progname);
exit(1);
}
void avrftdi_initpgm(PROGRAMMER * pgm)
{
strcpy(pgm->type, "avrftdi");
pgm->open = avrftdi_nousb_open;
}
#endif /*HAVE_LIBUSB_1_0*/
const char avrftdi_desc[] = "Interface to the MPSSE Engine of FTDI Chips using libftdi.";
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