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Diffstat (limited to 'xs/src/avrdude/ft245r.c')
| -rw-r--r-- | xs/src/avrdude/ft245r.c | 963 |
1 files changed, 963 insertions, 0 deletions
diff --git a/xs/src/avrdude/ft245r.c b/xs/src/avrdude/ft245r.c new file mode 100644 index 000000000..cc1061df4 --- /dev/null +++ b/xs/src/avrdude/ft245r.c @@ -0,0 +1,963 @@ + +/* + * avrdude - A Downloader/Uploader for AVR device programmers + * Copyright (C) 2003-2004 Theodore A. Roth <troth@openavr.org> + * some code: + * Copyright (C) 2011-2012 Roger E. Wolff <R.E.Wolff@BitWizard.nl> + * + * 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/>. + */ + + +/* $Id$ */ + +/* ft245r -- FT245R/FT232R Synchronous BitBangMode Programmer + default pin assign + FT232R / FT245R + miso = 1; # RxD / D1 + sck = 0; # RTS / D0 + mosi = 2; # TxD / D2 + reset = 4; # DTR / D4 +*/ + +/* + The ft232r is very similar, or even "identical" in the synchronous + bitbang mode that we use here. + + This allows boards that have an ft232r for communication and an avr + as the processor to function as their own "ICSP". Boards that fit + this description include the Arduino Duemilanove, Arduino Diecimila, + Arduino NG (http://arduino.cc/it/main/boards) and the BitWizard + ftdi_atmega board (http://www.bitwizard.nl/wiki/index.php/FTDI_ATmega) + + The Arduinos have to be patched to bring some of the control lines + to the ICSP header. The BitWizard board already has the neccessary + wiring on the PCB. + + How to add the wires to an arduino is documented here: + http://www.geocities.jp/arduino_diecimila/bootloader/index_en.html +*/ + + +#include "ac_cfg.h" + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <sys/time.h> +#include <unistd.h> +#include <stdint.h> + +#include "avrdude.h" +#include "libavrdude.h" + +#include "bitbang.h" +#include "ft245r.h" +#include "usbdevs.h" + +#if defined(_WIN32) +#include <windows.h> +#endif + +#if defined(HAVE_LIBFTDI1) && defined(HAVE_LIBUSB_1_0) +# if defined(HAVE_LIBUSB_1_0_LIBUSB_H) +# include <libusb-1.0/libusb.h> +# else +# include <libusb.h> +# endif +# include <libftdi1/ftdi.h> +#elif defined(HAVE_LIBFTDI) && defined(HAVE_USB_H) +/* ftdi.h includes usb.h */ +#include <ftdi.h> +#else +#warning No libftdi or libusb support. Install libftdi1/libusb-1.0 or libftdi/libusb and run configure/make again. +#define DO_NOT_BUILD_FT245R +#endif + +#ifndef HAVE_PTHREAD_H + +static int ft245r_nopthread_open (struct programmer_t *pgm, char * name) { + avrdude_message(MSG_INFO, "%s: error: no pthread support. Please compile again with pthread installed." +#if defined(_WIN32) + " See http://sourceware.org/pthreads-win32/." +#endif + "\n", + progname); + + return -1; +} + +void ft245r_initpgm(PROGRAMMER * pgm) { + strcpy(pgm->type, "ftdi_syncbb"); + pgm->open = ft245r_nopthread_open; +} + +#elif defined(DO_NOT_BUILD_FT245R) + +static int ft245r_noftdi_open (struct programmer_t *pgm, char * name) { + avrdude_message(MSG_INFO, "%s: error: no libftdi or libusb support. Install libftdi1/libusb-1.0 or libftdi/libusb and run configure/make again.\n", + progname); + + return -1; +} + +void ft245r_initpgm(PROGRAMMER * pgm) { + strcpy(pgm->type, "ftdi_syncbb"); + pgm->open = ft245r_noftdi_open; +} + +#else + +#include <pthread.h> + +#ifdef __APPLE__ +/* Mac OS X defines sem_init but actually does not implement them */ +#include <dispatch/dispatch.h> + +typedef dispatch_semaphore_t sem_t; + +#define sem_init(psem,x,val) *psem = dispatch_semaphore_create(val) +#define sem_post(psem) dispatch_semaphore_signal(*psem) +#define sem_wait(psem) dispatch_semaphore_wait(*psem, DISPATCH_TIME_FOREVER) +#else +#include <semaphore.h> +#endif + +#define FT245R_CYCLES 2 +#define FT245R_FRAGMENT_SIZE 512 +#define REQ_OUTSTANDINGS 10 +//#define USE_INLINE_WRITE_PAGE + +#define FT245R_DEBUG 0 + +static struct ftdi_context *handle; + +static unsigned char ft245r_ddr; +static unsigned char ft245r_out; +static unsigned char ft245r_in; + +#define BUFSIZE 0x2000 + +// libftdi / libftd2xx compatibility functions. + +static pthread_t readerthread; +static sem_t buf_data, buf_space; +static unsigned char buffer[BUFSIZE]; +static int head, tail; + +static void add_to_buf (unsigned char c) { + int nh; + + sem_wait (&buf_space); + if (head == (BUFSIZE -1)) nh = 0; + else nh = head + 1; + + if (nh == tail) { + avrdude_message(MSG_INFO, "buffer overflow. Cannot happen!\n"); + } + buffer[head] = c; + head = nh; + sem_post (&buf_data); +} + +static void *reader (void *arg) { + pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS,NULL); + struct ftdi_context *handle = (struct ftdi_context *)(arg); + unsigned char buf[0x1000]; + int br, i; + + while (1) { + pthread_testcancel(); + br = ftdi_read_data (handle, buf, sizeof(buf)); + for (i=0; i<br; i++) + add_to_buf (buf[i]); + } + return NULL; +} + +static int ft245r_send(PROGRAMMER * pgm, unsigned char * buf, size_t len) { + int rv; + + rv = ftdi_write_data(handle, buf, len); + if (len != rv) return -1; + return 0; +} + +static int ft245r_recv(PROGRAMMER * pgm, unsigned char * buf, size_t len) { + int i; + + // Copy over data from the circular buffer.. + // XXX This should timeout, and return error if there isn't enough + // data. + for (i=0; i<len; i++) { + sem_wait (&buf_data); + buf[i] = buffer[tail]; + if (tail == (BUFSIZE -1)) tail = 0; + else tail++; + sem_post (&buf_space); + } + + return 0; +} + + +static int ft245r_drain(PROGRAMMER * pgm, int display) { + int r; + unsigned char t; + + // flush the buffer in the chip by changing the mode..... + r = ftdi_set_bitmode(handle, 0, BITMODE_RESET); // reset + if (r) return -1; + r = ftdi_set_bitmode(handle, ft245r_ddr, BITMODE_SYNCBB); // set Synchronuse BitBang + if (r) return -1; + + // drain our buffer. + while (head != tail) { + ft245r_recv (pgm, &t, 1); + } + return 0; +} + + +static int ft245r_chip_erase(PROGRAMMER * pgm, AVRPART * p) { + unsigned char cmd[4] = {0,0,0,0}; + unsigned char res[4]; + + if (p->op[AVR_OP_CHIP_ERASE] == NULL) { + avrdude_message(MSG_INFO, "chip erase instruction not defined for part \"%s\"\n", + p->desc); + return -1; + } + + avr_set_bits(p->op[AVR_OP_CHIP_ERASE], cmd); + pgm->cmd(pgm, cmd, res); + usleep(p->chip_erase_delay); + return pgm->initialize(pgm, p); +} + + +static int ft245r_set_bitclock(PROGRAMMER * pgm) { + int r; + int rate = 0; + + /* bitclock is second. 1us = 0.000001. Max rate for ft232r 750000 */ + if(pgm->bitclock) { + rate = (uint32_t)(1.0/pgm->bitclock) * 2; + } else if (pgm->baudrate) { + rate = pgm->baudrate * 2; + } else { + rate = 150000; /* should work for all ftdi chips and the avr default internal clock of 1MHz */ + } + + if (FT245R_DEBUG) { + avrdude_message(MSG_NOTICE2, " ft245r: spi bitclk %d -> ft baudrate %d\n", + rate / 2, rate); + } + r = ftdi_set_baudrate(handle, rate); + if (r) { + avrdude_message(MSG_INFO, "Set baudrate (%d) failed with error '%s'.\n", + rate, ftdi_get_error_string (handle)); + return -1; + } + return 0; +} + +static int set_pin(PROGRAMMER * pgm, int pinname, int val) { + unsigned char buf[1]; + + if (pgm->pin[pinname].mask[0] == 0) { + // ignore not defined pins (might be the led or vcc or buff if not needed) + return 0; + } + + ft245r_out = SET_BITS_0(ft245r_out,pgm,pinname,val); + buf[0] = ft245r_out; + + ft245r_send (pgm, buf, 1); + ft245r_recv (pgm, buf, 1); + + ft245r_in = buf[0]; + return 0; +} + +static int set_sck(PROGRAMMER * pgm, int value) { + return set_pin(pgm, PIN_AVR_SCK, value); +} + +static int set_reset(PROGRAMMER * pgm, int value) { + return set_pin(pgm, PIN_AVR_RESET, value); +} + +static int set_buff(PROGRAMMER * pgm, int value) { + return set_pin(pgm, PPI_AVR_BUFF, value); +} + +static int set_vcc(PROGRAMMER * pgm, int value) { + return set_pin(pgm, PPI_AVR_VCC, value); +} + +/* 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); +} + +/* + * apply power to the AVR processor + */ +static void ft245r_powerup(PROGRAMMER * pgm) +{ + set_vcc(pgm, ON); /* power up */ + usleep(100); +} + + +/* + * remove power from the AVR processor + */ +static void ft245r_powerdown(PROGRAMMER * pgm) +{ + set_vcc(pgm, OFF); /* power down */ +} + + +static void ft245r_disable(PROGRAMMER * pgm) { + set_buff(pgm, OFF); +} + + +static void ft245r_enable(PROGRAMMER * pgm) { + /* + * Prepare to start talking to the connected device - pull reset low + * first, delay a few milliseconds, then enable the buffer. This + * sequence allows the AVR to be reset before the buffer is enabled + * to avoid a short period of time where the AVR may be driving the + * programming lines at the same time the programmer tries to. Of + * course, if a buffer is being used, then the /RESET line from the + * programmer needs to be directly connected to the AVR /RESET line + * and not via the buffer chip. + */ + set_reset(pgm, OFF); + usleep(1); + set_buff(pgm, ON); +} + +static int ft245r_cmd(PROGRAMMER * pgm, const unsigned char *cmd, + unsigned char *res); +/* + * issue the 'program enable' command to the AVR device + */ +static int ft245r_program_enable(PROGRAMMER * pgm, AVRPART * p) { + unsigned char cmd[4] = {0,0,0,0}; + unsigned char res[4]; + int i; + + if (p->op[AVR_OP_PGM_ENABLE] == NULL) { + avrdude_message(MSG_INFO, "%s: AVR_OP_PGM_ENABLE command not defined for %s\n", + progname, p->desc); + fflush(stderr); + return -1; + } + + avr_set_bits(p->op[AVR_OP_PGM_ENABLE], cmd); + + for(i = 0; i < 4; i++) { + ft245r_cmd(pgm, cmd, res); + + if (res[p->pollindex-1] == p->pollvalue) return 0; + + if (FT245R_DEBUG) { + avrdude_message(MSG_NOTICE, "%s: Program enable command not successful. Retrying.\n", + progname); + fflush(stderr); + } + set_pin(pgm, PIN_AVR_RESET, ON); + usleep(20); + set_pin(pgm, PIN_AVR_RESET, OFF); + + if (i == 3) { + ft245r_drain(pgm, 0); + tail = head; + } + } + + avrdude_message(MSG_INFO, "%s: Device is not responding to program enable. Check connection.\n", + progname); + fflush(stderr); + + return -1; +} + +/* + * initialize the AVR device and prepare it to accept commands + */ +static int ft245r_initialize(PROGRAMMER * pgm, AVRPART * p) { + + /* Apply power between VCC and GND while RESET and SCK are set to “0”. In some systems, + * the programmer can not guarantee that SCK is held low during power-up. In this + * case, RESET must be given a positive pulse of at least two CPU clock cycles duration + * after SCK has been set to “0”. + */ + set_sck(pgm, OFF); + ft245r_powerup(pgm); + + set_reset(pgm, OFF); + usleep(5000); // 5ms + set_reset(pgm, ON); + usleep(5000); // 5ms + set_reset(pgm, OFF); + + /* Wait for at least 20 ms and enable serial programming by sending the Programming + * Enable serial instruction to pin MOSI. + */ + usleep(20000); // 20ms + + return ft245r_program_enable(pgm, p); +} + +static inline int set_data(PROGRAMMER * pgm, unsigned char *buf, unsigned char data) { + int j; + int buf_pos = 0; + unsigned char bit = 0x80; + + for (j=0; j<8; j++) { + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_MOSI,data & bit); + + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,0); + buf[buf_pos] = ft245r_out; + buf_pos++; + + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,1); + buf[buf_pos] = ft245r_out; + buf_pos++; + + bit >>= 1; + } + return buf_pos; +} + +static inline unsigned char extract_data(PROGRAMMER * pgm, unsigned char *buf, int offset) { + int j; + int buf_pos = 1; + unsigned char bit = 0x80; + unsigned char r = 0; + + buf += offset * (8 * FT245R_CYCLES); + for (j=0; j<8; j++) { + if (GET_BITS_0(buf[buf_pos],pgm,PIN_AVR_MISO)) { + r |= bit; + } + buf_pos += FT245R_CYCLES; + bit >>= 1; + } + return r; +} + +/* to check data */ +static inline unsigned char extract_data_out(PROGRAMMER * pgm, unsigned char *buf, int offset) { + int j; + int buf_pos = 1; + unsigned char bit = 0x80; + unsigned char r = 0; + + buf += offset * (8 * FT245R_CYCLES); + for (j=0; j<8; j++) { + if (GET_BITS_0(buf[buf_pos],pgm,PIN_AVR_MOSI)) { + r |= bit; + } + buf_pos += FT245R_CYCLES; + bit >>= 1; + } + return r; +} + + +/* + * transmit an AVR device command and return the results; 'cmd' and + * 'res' must point to at least a 4 byte data buffer + */ +static int ft245r_cmd(PROGRAMMER * pgm, const unsigned char *cmd, + unsigned char *res) { + int i,buf_pos; + unsigned char buf[128]; + + buf_pos = 0; + for (i=0; i<4; i++) { + buf_pos += set_data(pgm, buf+buf_pos, cmd[i]); + } + buf[buf_pos] = 0; + buf_pos++; + + ft245r_send (pgm, buf, buf_pos); + ft245r_recv (pgm, buf, buf_pos); + res[0] = extract_data(pgm, buf, 0); + res[1] = extract_data(pgm, buf, 1); + res[2] = extract_data(pgm, buf, 2); + res[3] = extract_data(pgm, buf, 3); + + return 0; +} + +/* lower 8 pins are accepted, they might be also inverted */ +static const struct pindef_t valid_pins = {{0xff},{0xff}} ; + +static const struct pin_checklist_t pin_checklist[] = { + { PIN_AVR_SCK, 1, &valid_pins}, + { PIN_AVR_MOSI, 1, &valid_pins}, + { PIN_AVR_MISO, 1, &valid_pins}, + { PIN_AVR_RESET,1, &valid_pins}, + { PPI_AVR_BUFF, 0, &valid_pins}, +}; + +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]), true); + if(rv) { + pgm->display(pgm, progbuf); + return rv; + } + + strcpy(pgm->port, port); + + if (strcmp(port,DEFAULT_USB) != 0) { + if (strncasecmp("ft", port, 2) == 0) { + char *startptr = port + 2; + char *endptr = NULL; + devnum = strtol(startptr,&endptr,10); + if ((startptr==endptr) || (*endptr != '\0')) { + devnum = -1; + } + } + if (devnum < 0) { + avrdude_message(MSG_INFO, "%s: invalid portname '%s': use 'ft[0-9]+'\n", + progname,port); + return -1; + } + } else { + devnum = 0; + } + + handle = malloc (sizeof (struct ftdi_context)); + ftdi_init(handle); + LNODEID usbpid = lfirst(pgm->usbpid); + int pid; + if (usbpid) { + pid = *(int *)(ldata(usbpid)); + if (lnext(usbpid)) + avrdude_message(MSG_INFO, "%s: Warning: using PID 0x%04x, ignoring remaining PIDs in list\n", + progname, pid); + } else { + pid = USB_DEVICE_FT245; + } + rv = ftdi_usb_open_desc_index(handle, + pgm->usbvid?pgm->usbvid:USB_VENDOR_FTDI, + pid, + pgm->usbproduct[0]?pgm->usbproduct:NULL, + pgm->usbsn[0]?pgm->usbsn:NULL, + devnum); + if (rv) { + avrdude_message(MSG_INFO, "can't open ftdi device %d. (%s)\n", devnum, ftdi_get_error_string(handle)); + goto cleanup_no_usb; + } + + ft245r_ddr = + pgm->pin[PIN_AVR_SCK].mask[0] + | pgm->pin[PIN_AVR_MOSI].mask[0] + | pgm->pin[PIN_AVR_RESET].mask[0] + | pgm->pin[PPI_AVR_BUFF].mask[0] + | pgm->pin[PPI_AVR_VCC].mask[0] + | pgm->pin[PIN_LED_ERR].mask[0] + | pgm->pin[PIN_LED_RDY].mask[0] + | pgm->pin[PIN_LED_PGM].mask[0] + | pgm->pin[PIN_LED_VFY].mask[0]; + + /* set initial values for outputs, no reset everything else is off */ + ft245r_out = 0; + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_RESET,1); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,0); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_MOSI,0); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PPI_AVR_BUFF,0); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PPI_AVR_VCC,0); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_ERR,0); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_RDY,0); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_PGM,0); + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_VFY,0); + + + rv = ftdi_set_bitmode(handle, ft245r_ddr, BITMODE_SYNCBB); // set Synchronous BitBang + if (rv) { + avrdude_message(MSG_INFO, "%s: Synchronous BitBangMode is not supported (%s)\n", + progname, ftdi_get_error_string(handle)); + goto cleanup; + } + + rv = ft245r_set_bitclock(pgm); + if (rv) { + goto cleanup; + } + + /* We start a new thread to read the output from the FTDI. This is + * necessary because otherwise we'll deadlock. We cannot finish + * writing because the ftdi cannot send the results because we + * haven't provided a read buffer yet. */ + + sem_init (&buf_data, 0, 0); + sem_init (&buf_space, 0, BUFSIZE); + pthread_create (&readerthread, NULL, reader, handle); + + /* + * drain any extraneous input + */ + ft245r_drain (pgm, 0); + + ft245r_send (pgm, &ft245r_out, 1); + ft245r_recv (pgm, &ft245r_in, 1); + + return 0; + +cleanup: + ftdi_usb_close(handle); +cleanup_no_usb: + ftdi_deinit (handle); + free(handle); + handle = NULL; + return -1; +} + + +static void ft245r_close(PROGRAMMER * pgm) { + if (handle) { + // I think the switch to BB mode and back flushes the buffer. + ftdi_set_bitmode(handle, 0, BITMODE_SYNCBB); // set Synchronous BitBang, all in puts + ftdi_set_bitmode(handle, 0, BITMODE_RESET); // disable Synchronous BitBang + ftdi_usb_close(handle); + ftdi_deinit (handle); + pthread_cancel(readerthread); + pthread_join(readerthread, NULL); + free(handle); + handle = NULL; + } +} + +static void ft245r_display(PROGRAMMER * pgm, const char * p) { + avrdude_message(MSG_INFO, "%sPin assignment : 0..7 = DBUS0..7\n",p);/* , 8..11 = GPIO0..3\n",p);*/ + pgm_display_generic_mask(pgm, p, SHOW_ALL_PINS); +} + +static int ft245r_paged_write_gen(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m, + unsigned int page_size, unsigned int addr, + unsigned int n_bytes) { + unsigned long i, pa; + int rc; + + for (i=0; i<n_bytes; i++, addr++) { + rc = avr_write_byte_default(pgm, p, m, addr, m->buf[addr]); + if (rc != 0) { + return -2; + } + + if (m->paged) { + // Can this piece of code ever be activated?? Do AVRs exist that + // have paged non-flash memories? -- REW + // XXX Untested code below. + /* + * check to see if it is time to flush the page with a page + * write + */ + + if (((addr % m->page_size) == m->page_size-1) || (i == n_bytes-1)) { + pa = addr - (addr % m->page_size); + + rc = avr_write_page(pgm, p, m, pa); + if (rc != 0) { + return -2; + } + } + } + } + return i; +} + +static struct ft245r_request { + int addr; + int bytes; + int n; + struct ft245r_request *next; +} *req_head,*req_tail,*req_pool; + +static void put_request(int addr, int bytes, int n) { + struct ft245r_request *p; + if (req_pool) { + p = req_pool; + req_pool = p->next; + } else { + p = malloc(sizeof(struct ft245r_request)); + if (!p) { + avrdude_message(MSG_INFO, "can't alloc memory\n"); + exit(1); + } + } + memset(p, 0, sizeof(struct ft245r_request)); + p->addr = addr; + p->bytes = bytes; + p->n = n; + if (req_tail) { + req_tail->next = p; + req_tail = p; + } else { + req_head = req_tail = p; + } +} + +static int do_request(PROGRAMMER * pgm, AVRMEM *m) { + struct ft245r_request *p; + int addr, bytes, j, n; + unsigned char buf[FT245R_FRAGMENT_SIZE+1+128]; + + if (!req_head) return 0; + p = req_head; + req_head = p->next; + if (!req_head) req_tail = req_head; + + addr = p->addr; + bytes = p->bytes; + n = p->n; + memset(p, 0, sizeof(struct ft245r_request)); + p->next = req_pool; + req_pool = p; + + ft245r_recv(pgm, buf, bytes); + for (j=0; j<n; j++) { + m->buf[addr++] = extract_data(pgm, buf , (j * 4 + 3)); + } + return 1; +} + +static int ft245r_paged_write_flash(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m, + int page_size, int addr, int n_bytes) { + unsigned int i,j; + int addr_save,buf_pos,do_page_write,req_count; + unsigned char buf[FT245R_FRAGMENT_SIZE+1+128]; + + req_count = 0; + for (i=0; i<n_bytes; ) { + addr_save = addr; + buf_pos = 0; + do_page_write = 0; + for (j=0; j< FT245R_FRAGMENT_SIZE/8/FT245R_CYCLES/4; j++) { + buf_pos += set_data(pgm, buf+buf_pos, (addr & 1)?0x48:0x40 ); + buf_pos += set_data(pgm, buf+buf_pos, (addr >> 9) & 0xff ); + buf_pos += set_data(pgm, buf+buf_pos, (addr >> 1) & 0xff ); + buf_pos += set_data(pgm, buf+buf_pos, m->buf[addr]); + addr ++; + i++; + if ( (m->paged) && + (((i % m->page_size) == 0) || (i == n_bytes))) { + do_page_write = 1; + break; + } + } +#if defined(USE_INLINE_WRITE_PAGE) + if (do_page_write) { + int addr_wk = addr_save - (addr_save % m->page_size); + /* If this device has a "load extended address" command, issue it. */ + if (m->op[AVR_OP_LOAD_EXT_ADDR]) { + unsigned char cmd[4]; + OPCODE *lext = m->op[AVR_OP_LOAD_EXT_ADDR]; + + memset(cmd, 0, 4); + avr_set_bits(lext, cmd); + avr_set_addr(lext, cmd, addr_wk/2); + buf_pos += set_data(pgm, buf+buf_pos, cmd[0]); + buf_pos += set_data(pgm, buf+buf_pos, cmd[1]); + buf_pos += set_data(pgm, buf+buf_pos, cmd[2]); + buf_pos += set_data(pgm, buf+buf_pos, cmd[3]); + } + buf_pos += set_data(pgm, buf+buf_pos, 0x4C); /* Issue Page Write */ + buf_pos += set_data(pgm, buf+buf_pos,(addr_wk >> 9) & 0xff); + buf_pos += set_data(pgm, buf+buf_pos,(addr_wk >> 1) & 0xff); + buf_pos += set_data(pgm, buf+buf_pos, 0); + } +#endif + if (i >= n_bytes) { + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,0); // sck down + buf[buf_pos++] = ft245r_out; + } + ft245r_send(pgm, buf, buf_pos); + put_request(addr_save, buf_pos, 0); + //ft245r_sync(pgm); +#if 0 + avrdude_message(MSG_INFO, "send addr 0x%04x bufsize %d [%02x %02x] page_write %d\n", + addr_save,buf_pos, + extract_data_out(pgm, buf , (0*4 + 3) ), + extract_data_out(pgm, buf , (1*4 + 3) ), + do_page_write); +#endif + req_count++; + if (req_count > REQ_OUTSTANDINGS) + do_request(pgm, m); + if (do_page_write) { +#if defined(USE_INLINE_WRITE_PAGE) + while (do_request(pgm, m)) + ; + usleep(m->max_write_delay); +#else + int addr_wk = addr_save - (addr_save % m->page_size); + int rc; + while (do_request(pgm, m)) + ; + rc = avr_write_page(pgm, p, m, addr_wk); + if (rc != 0) { + return -2; + } +#endif + req_count = 0; + } + } + while (do_request(pgm, m)) + ; + return i; +} + + +static int ft245r_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 ft245r_paged_write_flash(pgm, p, m, page_size, addr, n_bytes); + } else if (strcmp(m->desc, "eeprom") == 0) { + return ft245r_paged_write_gen(pgm, p, m, page_size, addr, n_bytes); + } else { + return -2; + } +} + +static int ft245r_paged_load_gen(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m, + unsigned int page_size, unsigned int addr, + int n_bytes) { + unsigned char rbyte; + unsigned long i; + int rc; + + for (i=0; i<n_bytes; i++) { + rc = avr_read_byte_default(pgm, p, m, i+addr, &rbyte); + if (rc != 0) { + return -2; + } + m->buf[i+addr] = rbyte; + } + return 0; +} + +static int ft245r_paged_load_flash(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m, + unsigned int page_size, unsigned int addr, + unsigned int n_bytes) { + unsigned long i,j,n; + int addr_save,buf_pos; + int req_count = 0; + unsigned char buf[FT245R_FRAGMENT_SIZE+1]; + + for (i=0; i<n_bytes; ) { + buf_pos = 0; + addr_save = addr; + for (j=0; j< FT245R_FRAGMENT_SIZE/8/FT245R_CYCLES/4; j++) { + if (i >= n_bytes) break; + buf_pos += set_data(pgm, buf+buf_pos, (addr & 1)?0x28:0x20 ); + buf_pos += set_data(pgm, buf+buf_pos, (addr >> 9) & 0xff ); + buf_pos += set_data(pgm, buf+buf_pos, (addr >> 1) & 0xff ); + buf_pos += set_data(pgm, buf+buf_pos, 0); + addr ++; + i++; + } + if (i >= n_bytes) { + ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,0); // sck down + buf[buf_pos++] = ft245r_out; + } + n = j; + ft245r_send(pgm, buf, buf_pos); + put_request(addr_save, buf_pos, n); + req_count++; + if (req_count > REQ_OUTSTANDINGS) + do_request(pgm, m); + + } + while (do_request(pgm, m)) + ; + return 0; +} + +static int ft245r_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 ft245r_paged_load_flash(pgm, p, m, page_size, addr, n_bytes); + } else if (strcmp(m->desc, "eeprom") == 0) { + return ft245r_paged_load_gen(pgm, p, m, page_size, addr, n_bytes); + } else { + return -2; + } +} + +void ft245r_initpgm(PROGRAMMER * pgm) { + strcpy(pgm->type, "ftdi_syncbb"); + + /* + * mandatory functions + */ + pgm->initialize = ft245r_initialize; + pgm->display = ft245r_display; + pgm->enable = ft245r_enable; + pgm->disable = ft245r_disable; + pgm->program_enable = ft245r_program_enable; + pgm->chip_erase = ft245r_chip_erase; + pgm->cmd = ft245r_cmd; + pgm->open = ft245r_open; + pgm->close = ft245r_close; + pgm->read_byte = avr_read_byte_default; + pgm->write_byte = avr_write_byte_default; + + /* + * optional functions + */ + pgm->paged_write = ft245r_paged_write; + pgm->paged_load = ft245r_paged_load; + + pgm->rdy_led = set_led_rdy; + pgm->err_led = set_led_err; + pgm->pgm_led = set_led_pgm; + pgm->vfy_led = set_led_vfy; + pgm->powerup = ft245r_powerup; + pgm->powerdown = ft245r_powerdown; + + handle = NULL; +} + +#endif + +const char ft245r_desc[] = "FT245R/FT232R Synchronous BitBangMode Programmer"; |