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use bitbanging on ftdi mpsse when wrong pins are used 

* avrftdi.c, avrftdi_private.h: added additional pin check and bitbanging fallback
	* pindefs.[ch]: added a flag to enable/disable output
	* ft245r.c: changes because of added flag above

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1184 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Rene Liebscher 2013-06-19 17:40:32 +00:00
parent 46f7b6b470
commit da3961e155
6 changed files with 258 additions and 73 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2013-06-19 Rene Liebscher <R.Liebscher@gmx.de>
use bitbanging on ftdi mpsse when wrong pins are used
* avrftdi.c, avrftdi_private.h: added additional pin check
and bitbanging fallback
* pindefs.[ch]: added a flag to enable/disable output
* ft245r.c: changes because of added flag above
2013-05-17 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
Submitted by "Malte" and John McCorquodale:

265
avrftdi.c
View File

@ -295,12 +295,124 @@ static void avrftdi_powerdown(PROGRAMMER * pgm)
set_pin(pgm, PPI_AVR_VCC, OFF);
}
static inline int set_data(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_MOSI,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(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_MISO)) {
r |= bit;
}
buf += 2; // 2 bytes per input
bit >>= 1;
}
return r;
}
static int avrftdi_transmit_bb(PROGRAMMER * pgm, unsigned char mode, unsigned char *buf,
unsigned char *data, int buf_size)
{
size_t blocksize;
size_t remaining = buf_size;
size_t written = 0;
avrftdi_t* pdata = to_pdata(pgm);
// more than this does not work with FT2232D
blocksize = 16;//pdata->rx_buffer_size/2; // we are reading 2 bytes per data byte
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
unsigned char send_buffer[(8*2*6)*transfer_size+(8*1*2)*transfer_size+7];
int len = 0;
int i;
for(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) {
unsigned char recv_buffer[2*16*transfer_size];
int n;
int 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(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(avrftdi_t* pdata, unsigned char mode, unsigned char *buf,
static int avrftdi_transmit_mpsse(avrftdi_t* pdata, unsigned char mode, unsigned char *buf,
unsigned char *data, int buf_size)
{
size_t blocksize;
@ -358,6 +470,15 @@ static int avrftdi_transmit(avrftdi_t* pdata, unsigned char mode, unsigned char
return written;
}
static inline int avrftdi_transmit(PROGRAMMER * pgm, unsigned char mode, 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);
}
/* this function tries to sync up with the FTDI. See FTDI application note AN_129.
* AN_135 uses 0xab as bad command and enables/disables loopback around synchronisation.
* This may fail if data is left in the buffer (i.e. avrdude aborted with ctrl-c)
@ -477,14 +598,41 @@ static int write_flush(avrftdi_t* pdata)
}
static int avrftdi_pin_setup(PROGRAMMER * pgm)
static int avrftdi_check_pins_bb(PROGRAMMER * pgm, bool output)
{
/*************
* pin setup *
*************/
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 bibanging: 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(PROGRAMMER * pgm, bool output)
{
int pin;
/* pin checklist. */
struct pin_checklist_t pin_checklist[N_PINS];
avrftdi_t* pdata = to_pdata(pgm);
/* SCK/MOSI/MISO are fixed and not invertable?*/
@ -498,24 +646,67 @@ static int avrftdi_pin_setup(PROGRAMMER * pgm)
/* mask out SCK/MISO/MOSI */
valid_mask &= ~((1 << FTDI_SCK) | (1 << FTDI_MOSI) | (1 << FTDI_MISO));
log_debug("Using valid mask: 0x%08x\n", valid_mask);
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) {
pdata->pin_checklist[pin].pinname = pin;
pdata->pin_checklist[pin].mandatory = 0;
pdata->pin_checklist[pin].valid_pins = &valid_pins_others;
pin_checklist[pin].pinname = pin;
pin_checklist[pin].mandatory = 0;
pin_checklist[pin].valid_pins = &valid_pins_others;
}
pdata->pin_checklist[PIN_AVR_SCK].mandatory = 1;
pdata->pin_checklist[PIN_AVR_SCK].valid_pins = &valid_pins_SCK;
pdata->pin_checklist[PIN_AVR_MOSI].mandatory = 1;
pdata->pin_checklist[PIN_AVR_MOSI].valid_pins = &valid_pins_MOSI;
pdata->pin_checklist[PIN_AVR_MISO].mandatory = 1;
pdata->pin_checklist[PIN_AVR_MISO].valid_pins = &valid_pins_MISO;
pdata->pin_checklist[PIN_AVR_RESET].mandatory = 1;
/* 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_MOSI].mandatory = 1;
pin_checklist[PIN_AVR_MOSI].valid_pins = &valid_pins_MOSI;
pin_checklist[PIN_AVR_MISO].mandatory = 1;
pin_checklist[PIN_AVR_MISO].valid_pins = &valid_pins_MISO;
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(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_MOSI), avr_pin_name(PIN_AVR_MISO),
pins_to_str(&pgm->pin[PIN_AVR_SCK]),
pins_to_str(&pgm->pin[PIN_AVR_MOSI]),
pins_to_str(&pgm->pin[PIN_AVR_MISO]));
log_err("If other pin configuration is used, fallback to slower bitbanging mode is used.\n");
return -1;
}
pdata->use_bitbanging = !pin_check_mpsse || 1;
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; MISO, MOSI, RST (and probably
* VCC and BUFF).
*/
/* everything is an output, except MISO */
for(pin = 0; pin < N_PINS; ++pin) {
@ -528,25 +719,6 @@ static int avrftdi_pin_setup(PROGRAMMER * pgm)
pdata->led_mask |= pgm->pin[pin].mask[0];
}
/* assumes all checklists above have same number of entries */
if (pins_check(pgm, pdata->pin_checklist,N_PINS)) {
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_MOSI), avr_pin_name(PIN_AVR_MISO),
pins_to_str(&pgm->pin[PIN_AVR_SCK]),
pins_to_str(&pgm->pin[PIN_AVR_MOSI]),
pins_to_str(&pgm->pin[PIN_AVR_MISO]));
log_err("Please correct your cabling and/or configuration.\n");
log_err("If your hardware is fixed, consider using a bitbang programmer.\n");
return -1;
}
/*
* TODO: No need to fail for a wrongly configured led or something.
* Maybe we should only fail for SCK; MISO, MOSI, RST (and probably
* VCC and BUFF).
*/
log_info("Pin direction mask: %04x\n", pdata->pin_direction);
log_info("Pin value mask: %04x\n", pdata->pin_value);
@ -754,7 +926,7 @@ static int avrftdi_cmd(PROGRAMMER * pgm, unsigned char cmd[4], unsigned char res
{
/* 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);
return avrftdi_transmit(pgm, MPSSE_DO_READ | MPSSE_DO_WRITE, cmd, res, 4);
}
@ -838,8 +1010,7 @@ avrftdi_lext(avrftdi_t* pdata, AVRPART *p, AVRMEM *m, unsigned int address)
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 cmd[] = { 0x00, 0x00, 0x00, 0x00 };
unsigned char *data = &m->buf[addr];
unsigned int add;
@ -847,14 +1018,12 @@ static int avrftdi_eeprom_write(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
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++);
//avrftdi_transmit(to_pdata(pgm), MPSSE_DO_WRITE, cmd, cmd, 4);
E(ftdi_write_data(to_pdata(pgm)->ftdic, cmd, sizeof(cmd)) != sizeof(cmd),
to_pdata(pgm)->ftdic);
avr_set_addr(m->op[AVR_OP_WRITE], cmd, add);
avr_set_input(m->op[AVR_OP_WRITE], cmd, *data++);
avrftdi_transmit(pgm, MPSSE_DO_WRITE, cmd, cmd, 4);
usleep((m->max_write_delay));
}
return len;
}
@ -873,7 +1042,7 @@ static int avrftdi_eeprom_read(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
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);
avrftdi_transmit(pgm, MPSSE_DO_READ | MPSSE_DO_WRITE, cmd, cmd, 4);
avr_get_output(m->op[AVR_OP_READ], cmd, bufptr++);
}
@ -963,7 +1132,7 @@ static int avrftdi_flash_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
buf_dump(buf, buf_size, "command buffer", 0, 16*2);
log_info("Transmitting buffer of size: %d\n", buf_size);
avrftdi_transmit(to_pdata(pgm), MPSSE_DO_WRITE, buf, buf, buf_size);
avrftdi_transmit(pgm, MPSSE_DO_WRITE, buf, buf, buf_size);
bufptr = buf;
/* find a poll byte. we cannot poll a value of 0xff, so look
@ -1053,7 +1222,7 @@ static int avrftdi_flash_read(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
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);
avrftdi_transmit(pgm, MPSSE_DO_READ | MPSSE_DO_WRITE, o_buf, i_buf, len * 4);
if(verbose > TRACE) {
buf_dump(i_buf, sizeof(i_buf), "i_buf", 0, 32);

4
avrftdi_private.h
View File

@ -78,8 +78,8 @@ typedef struct avrftdi_s {
int pin_limit;
/* internal RX buffer of the device. needed for INOUT transfers */
int rx_buffer_size;
/* pin checklist. */
struct pin_checklist_t pin_checklist[N_PINS];
/* use bitbanging instead of mpsse spi */
bool use_bitbanging;
} avrftdi_t;
void avrftdi_log(int level, const char * func, int line, const char * fmt, ...);

2
ft245r.c
View File

@ -528,7 +528,7 @@ static int ft245r_open(PROGRAMMER * pgm, char * port) {
int rv;
int devnum = -1;
rv = pins_check(pgm,pin_checklist,sizeof(pin_checklist)/sizeof(pin_checklist[0]));
rv = pins_check(pgm,pin_checklist,sizeof(pin_checklist)/sizeof(pin_checklist[0]), true);
if(rv) {
pgm->display(pgm, progbuf);
return rv;

13
pindefs.c
View File

@ -201,7 +201,7 @@ const char * pinmask_to_str(const pinmask_t * const pinmask) {
* @param[in] size the number of entries in checklist
* @returns 0 if all pin definitions are valid, -1 otherwise
*/
int pins_check(const struct programmer_t * const pgm, const struct pin_checklist_t * const checklist, const int size) {
int pins_check(const struct programmer_t * const pgm, const struct pin_checklist_t * const checklist, const int size, bool output) {
static const struct pindef_t no_valid_pins = {{0}, {0}}; // default value if check list does not contain anything else
int rv = 0; // return value
int pinname; // loop counter through pinnames
@ -253,6 +253,7 @@ int pins_check(const struct programmer_t * const pgm, const struct pin_checklist
already_used_all[segment] |= pgm->pin[pinname].mask[segment];
}
if(invalid) {
if(output) {
fprintf(stderr,
"%s: %s: Following pins are not valid pins for this function: %s\n",
progname, avr_pin_name(pinname), pinmask_to_str(invalid_used));
@ -261,9 +262,11 @@ int pins_check(const struct programmer_t * const pgm, const struct pin_checklist
"%s: %s: Valid pins for this function are: %s\n",
progname, avr_pin_name(pinname), pinmask_to_str(valid_pins->mask));
}
}
is_ok = false;
}
if(inverse) {
if(output) {
fprintf(stderr,
"%s: %s: Following pins are not usable as inverse pins for this function: %s\n",
progname, avr_pin_name(pinname), pinmask_to_str(inverse_used));
@ -272,27 +275,31 @@ int pins_check(const struct programmer_t * const pgm, const struct pin_checklist
"%s: %s: Valid inverse pins for this function are: %s\n",
progname, avr_pin_name(pinname), pinmask_to_str(valid_pins->inverse));
}
}
is_ok = false;
}
if(used) {
if(output) {
fprintf(stderr,
"%s: %s: Following pins are set for other functions too: %s\n",
progname, avr_pin_name(pinname), pinmask_to_str(already_used));
is_ok = false;
}
}
if(!mandatory_used && is_mandatory && !invalid) {
if(output) {
fprintf(stderr,
"%s: %s: Mandatory pin is not defined.\n",
progname, avr_pin_name(pinname));
}
is_ok = false;
}
if(!is_ok) {
rv = -1;
} else if(verbose >= 3) {
} else if(output && verbose >= 3) {
fprintf(stderr,
"%s: %s: Pin is ok.\n",
progname, avr_pin_name(pinname));
}
}
return rv;

3
pindefs.h
View File

@ -165,9 +165,10 @@ void pgm_fill_old_pins(struct programmer_t * const pgm);
* @param[in] pgm the programmer to check
* @param[in] checklist the constraint for the pins
* @param[in] size the number of entries in checklist
* @param[in] output false suppresses error messages to the user
* @returns 0 if all pin definitions are valid, -1 otherwise
*/
int pins_check(const struct programmer_t * const pgm, const struct pin_checklist_t * const checklist, const int size);
int pins_check(const struct programmer_t * const pgm, const struct pin_checklist_t * const checklist, const int size, const bool output);
/**
* Returns the name of the pin as string.