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pickit2.c
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pickit2.c
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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2005 Erik Walthinsen
* Copyright (C) 2002-2004 Brian S. Dean <bsd@bsdhome.com>
* Copyright (C) 2006 David Moore
* Copyright (C) 2006,2007 Joerg Wunsch <j@uriah.heep.sax.de>
*
* 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/>.
*/
/* $Id: pickit2.c 2010-05-03 dbrown$ */
/* Based on Id: stk500v2.c 836 2009-07-10 22:39:37Z joerg_wunsch */
/*
* avrdude interface for PicKit2 programmer
*
* The PicKit2 programmer is a cheap device capable
* of 2 (bidirectional data line), 3, 4 wire SPI comms
*
* The PICkit2 software license doesn't allow the source to be
* modified to program other devices - nor can we distribute
* their source code. This program is not derived from nor does it
* contain any of the pickit2 source and should be exempt from any
* licensing issues.
*
* ISP Pinout (AVR - PICKit2 (pin)):
* RST - VPP/MCLR (1)
* VDD - VDD Target (2) -- possibly optional if AVR self powered
* GND - GND (3)
* MISO - PGD (4)
* SCLK - PDC (5)
* MOSI - AUX (6)
*/
#include "ac_cfg.h"
#if defined(HAVE_LIBUSB) || (defined(WIN32NATIVE) && defined(HAVE_LIBHID))
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#include <inttypes.h>
#include "avrdude.h"
#include "avr.h"
#include "pgm.h"
#include "usbdevs.h"
#if (defined(WIN32NATIVE) && defined(HAVE_LIBHID))
#include <windows.h>
#if defined(HAVE_DDK_HIDSDI_H)
# include <ddk/hidsdi.h>
#else
# include "my_ddk_hidsdi.h"
#endif
#include <setupapi.h>
#else
#if defined(HAVE_USB_H)
# include <usb.h>
#elif defined(HAVE_LUSB0_USB_H)
# include <lusb0_usb.h>
#else
# error "libusb needs either <usb.h> or <lusb0_usb.h>"
#endif
#endif
#if 0
#define DEBUG(...) do { fprintf(stderr, __VA_ARGS__); } while(0)
#else
#define DEBUG(...) ((void)0)
#endif
#if 0
#define DEBUGRECV(...) do { fprintf(stderr, __VA_ARGS__); } while(0)
#else
#define DEBUGRECV(...) ((void)0)
#endif
#define PICKIT2_VID 0x04d8
#define PICKIT2_PID 0x0033
#define SPI_MAX_CHUNK (64 - 10) // max packet size less the command overhead
// win32native only:
#if (defined(WIN32NATIVE) && defined(HAVE_LIBHID))
static HANDLE open_hid(unsigned short vid, unsigned short pid);
const char *usb_strerror()
{
return "";
}
#else
static int usb_open_device(struct usb_dev_handle **dev, int vid, int pid);
//#define INVALID_HANDLE_VALUE NULL
#define USB_ERROR_NONE 0
#define USB_ERROR_ACCESS 1
#define USB_ERROR_NOTFOUND 2
#define USB_ERROR_BUSY 16
#define USB_ERROR_IO 5
#endif // WIN32NATIVE
static int pickit2_write_report(PROGRAMMER *pgm, unsigned char report[65]);
static int pickit2_read_report(PROGRAMMER *pgm, unsigned char report[65]);
#ifndef MIN
#define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
#endif
/*
* Private data for this programmer.
*/
struct pdata
{
#if (defined(WIN32NATIVE) && defined(HAVE_LIBHID))
HANDLE usb_handle, write_event, read_event;
#else
struct usb_dev_handle *usb_handle; // LIBUSB STUFF
#endif
uint8_t clock_period; // SPI clock period in us
int transaction_timeout; // usb trans timeout in ms
};
#define PDATA(pgm) ((struct pdata *)(pgm->cookie))
#define CMD_NOP 0x5A
#define CMD_GET_VERSION 0x76
#define CMD_SET_VDD_4(v) 0xA0, (uint8_t)((v)*2048+672), (uint8_t)(((v)*2048+672)/256), (uint8_t)((v)*36)
#define CMD_SET_VPP_4(v) 0xA1, 0x40, (uint8_t)((v)*18.61), (uint8_t)((v)*13)
#define CMD_READ_VDD_VPP 0xA3
#define CMD_EXEC_SCRIPT_2(len) 0xA6, (len)
#define CMD_CLR_DLOAD_BUFF 0xA7
#define CMD_DOWNLOAD_DATA_2(len) 0xA8, (len)
#define CMD_CLR_ULOAD_BUFF 0xA9
#define CMD_UPLOAD_DATA 0xAA
#define CMD_UPLOAD_DATA_NO_LEN 0xAC
#define CMD_END_OF_BUFFER 0xAD
#define SCR_VDD_ON 0xFF
#define SCR_VDD_OFF 0xFE
#define SCR_VPP_ON 0xFB
#define SCR_VPP_OFF 0xFA
#define SCR_VPP_PWM_ON 0xF9
#define SCR_VPP_PWM_OFF 0xF8
#define SCR_MCLR_GND_ON 0xF7
#define SCR_MCLR_GND_OFF 0xF6
#define SCR_BUSY_LED_ON 0xF5
#define SCR_BUSY_LED_OFF 0xF4
#define SCR_SET_ICSP_DELAY_2(us) 0xEA,(us)
#define SCR_SET_PINS_2(dd, cd, dv, cv) 0xF3, (((cd)!=0) | (((dd)!=0)<<1) | (((cv)!=0)<<2) | (((dv)!=0)<<3))
#define SCR_GET_PINS 0xDC
#define SCR_LOOP_3(rel, cnt) 0xE9, rel, cnt
#define SCR_DELAY_2(sec) ((sec)>0.0054528?0xE8:0xE7), (uint8_t)((sec)>0.0054528?(.999+(sec)/.00546):(.999+(sec)/.0000213))
#define SCR_SET_AUX_2(ad, av) 0xCF, (((ad)!=0) | (((av)!=0)<<1))
#define SCR_SPI_SETUP_PINS_4 SCR_SET_PINS_2(1,0,0,0), SCR_SET_AUX_2(0,0)
#define SCR_SPI 0xC3
#define SCR_SPI_LIT_2(v) 0xC7,(v)
static void pickit2_setup(PROGRAMMER * pgm)
{
if ((pgm->cookie = malloc(sizeof(struct pdata))) == 0)
{
fprintf(stderr,
"%s: pickit2_setup(): Out of memory allocating private data\n",
progname);
exit(1);
}
memset(pgm->cookie, 0, sizeof(struct pdata));
PDATA(pgm)->transaction_timeout = 1500; // default value, may be overridden with -x timeout=ms
PDATA(pgm)->clock_period = 10; // default value, may be overridden with -x clockrate=us or -B or -i
}
static void pickit2_teardown(PROGRAMMER * pgm)
{
free(pgm->cookie);
}
static int pickit2_open(PROGRAMMER * pgm, char * port)
{
#if (defined(WIN32NATIVE) && defined(HAVE_LIBHID))
PDATA(pgm)->usb_handle = open_hid(PICKIT2_VID, PICKIT2_PID);
if (PDATA(pgm)->usb_handle == INVALID_HANDLE_VALUE)
{
/* no PICkit2 found */
fprintf(stderr,
"%s: error: could not find PICkit2 with vid=0x%x pid=0x%x\n",
progname, PICKIT2_VID, PICKIT2_PID);
exit(1);
}
else
{
// get the device description while we're at it
short buff[PGM_DESCLEN], i;
HidD_GetProductString(PDATA(pgm)->usb_handle, buff, PGM_DESCLEN);
// convert from wide chars
memset(&(pgm->type), 0, PGM_DESCLEN);
for (i = 0; i < PGM_DESCLEN && buff[i]; i++)
{
pgm->type[i] = (char)buff[i];
}
}
#else
if (usb_open_device(&(PDATA(pgm)->usb_handle), PICKIT2_VID, PICKIT2_PID) < 0)
{
/* no PICkit2 found */
fprintf(stderr,
"%s: error: could not find PICkit2 with vid=0x%x pid=0x%x\n",
progname, PICKIT2_VID, PICKIT2_PID);
exit(1);
}
#endif
if (pgm->ispdelay > 0)
{
PDATA(pgm)->clock_period = MIN(pgm->ispdelay, 255);
}
else if (pgm->bitclock > 0.0)
{
PDATA(pgm)->clock_period = MIN(pgm->bitclock * 1e6, 255);
}
return 0;
}
static void pickit2_close(PROGRAMMER * pgm)
{
#if (defined(WIN32NATIVE) && defined(HAVE_LIBHID))
CloseHandle(PDATA(pgm)->usb_handle);
CloseHandle(PDATA(pgm)->read_event);
CloseHandle(PDATA(pgm)->write_event);
#else
usb_close(PDATA(pgm)->usb_handle);
#endif // WIN32NATIVE
}
static int pickit2_initialize(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char temp[4];
memset(temp, 0, sizeof(temp));
int errorCode = 0;
/* set sck period */
if (pgm->set_sck_period)
pgm->set_sck_period(pgm, pgm->bitclock);
/* connect to target device -- we'll just ask for the firmware version */
char report[65] = {0, CMD_GET_VERSION, CMD_END_OF_BUFFER};
if ((errorCode = pickit2_write_report(pgm, report)) > 0)
{
memset(report, 0, sizeof(report));
if ((errorCode = pickit2_read_report(pgm, report)) >= 4)
{
if (verbose)
{
fprintf(stderr, "%s: %s firmware version %d.%d.%d\n", progname, pgm->desc, (int)report[1], (int)report[2], (int)report[3]);
}
// set the pins, apply reset,
// TO DO: apply vtarget (if requested though -x option)
char report[65] =
{
0, CMD_SET_VDD_4(5),
CMD_SET_VPP_4(5),
CMD_EXEC_SCRIPT_2(24),
SCR_SPI_SETUP_PINS_4, // SDO, SDI, SCK
SCR_SET_ICSP_DELAY_2(PDATA(pgm)->clock_period), // slow down the SPI
SCR_VDD_ON,
SCR_MCLR_GND_OFF, // let reset float high
SCR_VPP_PWM_ON,
SCR_DELAY_2(.1),
SCR_VPP_ON,
SCR_DELAY_2(.1),
SCR_VPP_OFF,
SCR_DELAY_2(.01),
SCR_MCLR_GND_ON, // reset low - programming mode
SCR_DELAY_2(.1),
SCR_BUSY_LED_ON,
SCR_DELAY_2(.3),
SCR_BUSY_LED_OFF,
CMD_CLR_DLOAD_BUFF,
CMD_CLR_ULOAD_BUFF,
CMD_END_OF_BUFFER
};
if (pickit2_write_report(pgm, report) < 0)
{
fprintf(stderr, "pickit2_read_report failed (ec %d). %s\n", errorCode, usb_strerror());
return -1;
}
}
else
{
fprintf(stderr, "pickit2_read_report failed (ec %d). %s\n", errorCode, usb_strerror());
return -1;
}
}
else
{
fprintf(stderr, "pickit2_write_report failed (ec %d). %s\n", errorCode, usb_strerror());
return -1;
}
if (pgm->program_enable)
return pgm->program_enable(pgm, p);
else
return -1;
}
static void pickit2_disable(PROGRAMMER * pgm)
{
/* make sure all pins are floating & all voltages are off */
uint8_t report[65] =
{
0, CMD_EXEC_SCRIPT_2(8),
SCR_SET_PINS_2(1,1,0,0),
SCR_SET_AUX_2(1,0),
SCR_MCLR_GND_OFF,
SCR_VPP_OFF,
SCR_VDD_OFF,
SCR_BUSY_LED_OFF,
CMD_END_OF_BUFFER
};
pickit2_write_report(pgm, report);
return;
}
static void pickit2_enable(PROGRAMMER * pgm)
{
/* Do nothing. */
return;
}
static void pickit2_display(PROGRAMMER * pgm, const char * p)
{
DEBUG( "%s: Found \"%s\" version %d.%d.%d\n", progname, p, 1, 1, 1);
return;
}
#define sendReport(x)
#define readReport(x) 0
#if 0
static int pickit2_rdy_led (struct programmer_t * pgm, int value)
{
// no rdy led
return 0;
}
static int pickit2_err_led(struct programmer_t * pgm, int value)
{
// there is no error led, so just flash the busy led a few times
uint8_t report[65] =
{
0, CMD_EXEC_SCRIPT_2(9),
SCR_BUSY_LED_ON,
SCR_DELAY_2(.2),
SCR_BUSY_LED_OFF,
SCR_DELAY_2(.2),
SCR_LOOP_3(6, 9),
CMD_END_OF_BUFFER
};
// busy stops flashing by itself, so just return
if (!value)
{
return 0;
}
return pickit2_write_report(pgm, report) != -1;
}
#endif
static int pickit2_pgm_led (struct programmer_t * pgm, int value)
{
// script to set busy led appropriately
uint8_t report[65] = {0, CMD_EXEC_SCRIPT_2(1),
value ? SCR_BUSY_LED_ON : SCR_BUSY_LED_OFF,
CMD_END_OF_BUFFER
};
return pickit2_write_report(pgm, report) != -1;
}
static int pickit2_vfy_led (struct programmer_t * pgm, int value)
{
// no such thing - maybe just call pgm_led
return pgm->pgm_led(pgm, value);
}
static void pickit2_powerup(struct programmer_t * pgm)
{
// turn vdd on?
}
static void pickit2_powerdown(struct programmer_t * pgm)
{
// do what?
pgm->disable(pgm);
}
static int pickit2_program_enable(struct programmer_t * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
if (p->op[AVR_OP_PGM_ENABLE] == NULL)
{
fprintf(stderr, "program enable instruction not defined for part \"%s\"\n",
p->desc);
return -1;
}
memset(cmd, 0, sizeof(cmd));
avr_set_bits(p->op[AVR_OP_PGM_ENABLE], cmd);
pgm->cmd(pgm, cmd, res);
if (verbose)
{
int i;
fprintf(stderr, "program_enable(): sending command. Resp = ");
for (i = 0; i < 4; i++)
{
fprintf(stderr, "%x ", (int)res[i]);
}
fprintf(stderr, "\n");
}
// check for sync character
if (res[2] != cmd[1])
return -2;
return 0;
}
static int pickit2_chip_erase(struct programmer_t * pgm, AVRPART * p)
{
unsigned char cmd[4];
unsigned char res[4];
if (p->op[AVR_OP_CHIP_ERASE] == NULL)
{
fprintf(stderr, "chip erase instruction not defined for part \"%s\"\n",
p->desc);
return -1;
}
pgm->pgm_led(pgm, ON);
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);
pgm->pgm_led(pgm, OFF);
return 0;
}
static int pickit2_paged_load(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
unsigned int page_size, unsigned int addr, unsigned int n_bytes)
{
// only supporting flash & eeprom page reads
if ((!mem->paged || page_size <= 1) || (strcmp(mem->desc, "flash") != 0 && strcmp(mem->desc, "eeprom") != 0))
{
return -1;
}
DEBUG( "paged read ps %d, mem %s\n", page_size, mem->desc);
OPCODE *readop = 0, *lext = mem->op[AVR_OP_LOAD_EXT_ADDR];
uint8_t data = 0, cmd[SPI_MAX_CHUNK], res[SPI_MAX_CHUNK];
unsigned int addr_base;
unsigned int max_addr = addr + n_bytes;
pgm->pgm_led(pgm, ON);
for (addr_base = addr; addr_base < max_addr; )
{
if ((addr_base == 0 || (addr_base % /*ext_address_boundary*/ 65536) == 0)
&& lext != NULL)
{
memset(cmd, 0, sizeof(cmd));
avr_set_bits(lext, cmd);
avr_set_addr(lext, cmd, addr_base);
pgm->cmd(pgm, cmd, res);
}
// bytes to send in the next packet -- not necessary as pickit2_spi() handles breaking up
// the data into packets -- but we need to keep transfers frequent so that we can update the
// status indicator bar
uint32_t blockSize = MIN(65536 - (addr_base % 65536), MIN(max_addr - addr_base, SPI_MAX_CHUNK / 4));
memset(cmd, 0, sizeof(cmd));
memset(res, 0, sizeof(res));
uint8_t addr_off;
for (addr_off = 0; addr_off < blockSize; addr_off++)
{
int addr = addr_base + addr_off, caddr = addr;
if (mem->op[AVR_OP_READ_LO] != NULL && mem->op[AVR_OP_READ_HI] != NULL)
{
if (addr & 0x00000001)
readop = mem->op[AVR_OP_READ_HI];
else
readop = mem->op[AVR_OP_READ_LO];
caddr /= 2;
}
else if (mem->op[AVR_OP_READ] != NULL)
{
readop = mem->op[AVR_OP_READ];
}
else
{
fprintf(stderr, "no read command specified\n");
return -1;
}
avr_set_bits(readop, &cmd[addr_off*4]);
avr_set_addr(readop, &cmd[addr_off*4], caddr);
}
int bytes_read = pgm->spi(pgm, cmd, res, blockSize*4);
if (bytes_read < 0)
{
fprintf(stderr, "Failed @ pgm->spi()\n");
pgm->err_led(pgm, ON);
return -1;
}
DEBUG( "\npaged_load @ %X, wrote: %d, read: %d bytes\n", addr_base, blockSize*4, bytes_read);
for (addr_off = 0; addr_off < bytes_read / 4; addr_off++)
{
data = 0;
avr_get_output(readop, &res[addr_off*4], &data);
mem->buf[addr_base + addr_off] = data;
DEBUG( "%2X(%c)", (int)data, data<0x20?'.':data);
}
DEBUG( "\n");
addr_base += blockSize;
}
pgm->pgm_led(pgm, OFF);
return n_bytes;
}
static int pickit2_commit_page(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
unsigned long addr)
{
OPCODE * wp, * lext;
wp = mem->op[AVR_OP_WRITEPAGE];
if (wp == NULL)
{
fprintf(stderr,
"pickit2_commit_page(): memory \"%s\" not configured for page writes\n",
mem->desc);
return -1;
}
// adjust the address if this memory is word-addressable
if ((mem->op[AVR_OP_LOADPAGE_LO]) || (mem->op[AVR_OP_READ_LO]))
addr /= 2;
unsigned char cmd[8];
memset(cmd, 0, sizeof(cmd));
// use the "load extended address" command, if available
lext = mem->op[AVR_OP_LOAD_EXT_ADDR];
if (lext != NULL)
{
avr_set_bits(lext, cmd);
avr_set_addr(lext, cmd, addr);
}
// make up the write page command in the 2nd cmd position
avr_set_bits(wp, &cmd[4]);
avr_set_addr(wp, &cmd[4], addr);
if (lext != NULL)
{
// write the load extended address cmd && the write_page cmd
pgm->spi(pgm, cmd, NULL, 8);
}
else
{
// write just the write_page cmd
pgm->spi(pgm, &cmd[4], NULL, 4);
}
// just delay the max (we could do the delay in the PICkit2 if we wanted)
usleep(mem->max_write_delay);
return 0;
}
// not actually a paged write, but a bulk/batch write
static int pickit2_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * mem,
unsigned int page_size, unsigned int addr, unsigned int n_bytes)
{
// only paged write for flash implemented
if (strcmp(mem->desc, "flash") != 0 && strcmp(mem->desc, "eeprom") != 0)
{
fprintf(stderr, "Part does not support %d paged write of %s\n", page_size, mem->desc);
return -1;
}
DEBUG( "page size %d mem %s supported: %d\n", page_size, mem->desc, mem->paged);
DEBUG( "loadpagehi %x, loadpagelow %x, writepage %x\n", (int)mem->op[AVR_OP_LOADPAGE_HI], (int)mem->op[AVR_OP_LOADPAGE_LO], (int)mem->op[AVR_OP_WRITEPAGE]);
OPCODE *writeop;
uint8_t cmd[SPI_MAX_CHUNK], res[SPI_MAX_CHUNK];
unsigned int addr_base;
unsigned int max_addr = addr + n_bytes;
pgm->pgm_led(pgm, ON);
for (addr_base = addr; addr_base < max_addr; )
{
uint32_t blockSize;
if (mem->paged)
{
blockSize = MIN(page_size - (addr_base % page_size), MIN(max_addr - addr_base, SPI_MAX_CHUNK/4) ); // bytes remaining in page
}
else
{
blockSize = 1;
}
memset(cmd, 0, sizeof(cmd));
memset(res, 0, sizeof(res));
uint8_t addr_off;
for (addr_off = 0; addr_off < blockSize; addr_off++)
{
int addr = addr_base + addr_off;
int caddr = 0;
/*
* determine which memory opcode to use
*/
if (mem->paged && mem->op[AVR_OP_LOADPAGE_HI] && mem->op[AVR_OP_LOADPAGE_LO])
{
if (addr & 0x01)
writeop = mem->op[AVR_OP_LOADPAGE_HI];
else
writeop = mem->op[AVR_OP_LOADPAGE_LO];
caddr = addr / 2;
}
else if (mem->paged && mem->op[AVR_OP_LOADPAGE_LO])
{
writeop = mem->op[AVR_OP_LOADPAGE_LO];
caddr = addr;
}
else if (mem->op[AVR_OP_WRITE_LO])
{
writeop = mem->op[AVR_OP_WRITE_LO];
caddr = addr; // maybe this should divide by 2 & use the write_high opcode also
fprintf(stderr, "Error AVR_OP_WRITE_LO defined only (where's the HIGH command?)\n");
return -1;
}
else
{
writeop = mem->op[AVR_OP_WRITE];
caddr = addr;
}
if (writeop == NULL)
{
pgm->err_led(pgm, ON);
// not supported!
return -1;
}
avr_set_bits(writeop, &cmd[addr_off*4]);
avr_set_addr(writeop, &cmd[addr_off*4], caddr);
avr_set_input(writeop, &cmd[addr_off*4], mem->buf[addr]);
}
int bytes_read = pgm->spi(pgm, cmd, res, blockSize*4);
if (bytes_read < 0)
{
fprintf(stderr, "Failed @ pgm->spi()\n");
pgm->err_led(pgm, ON);
return -1;
}
addr_base += blockSize;
// write the page - this function looks after extended address also
if (mem->paged && (((addr_base % page_size) == 0) || (addr_base == max_addr)))
{
DEBUG( "Calling pickit2_commit_page()\n");
pickit2_commit_page(pgm, p, mem, addr_base-1);
}
else if (!mem->paged)
{
usleep(mem->max_write_delay);
}
}
pgm->pgm_led(pgm, OFF);
return n_bytes;
}
static int pickit2_cmd(struct programmer_t * pgm, unsigned char cmd[4],
unsigned char res[4])
{
return pgm->spi(pgm, cmd, res, 4);
}
// breaks up the cmd[] data into packets & sends to the pickit2. Data shifted in is stored in res[].
static int pickit2_spi(struct programmer_t * pgm, unsigned char cmd[],
unsigned char res[], int n_bytes)
{
int retval = 0, temp1 = 0, temp2 = 0, count = n_bytes;
while (count > 0)
{
uint8_t i, blockSize = MIN(count, SPI_MAX_CHUNK);
uint8_t report[65] = {0, CMD_DOWNLOAD_DATA_2(blockSize)};
uint8_t *repptr = report + 3;
memset(report + 3, CMD_END_OF_BUFFER, sizeof(report) - 3);
// append some data to write to SPI
for (i = 0; i < blockSize; i++)
{
*repptr++ = *cmd++;
count--; // 1 less byte to pack
}
if (blockSize == 1)
{
*repptr++ = 0xa6; //CMD_EXECUTE_SCRIPT;
*repptr++ = 1;
*repptr++ = SCR_SPI;
}
else
{
*repptr++ = 0xa6; //CMD_EXECUTE_SCRIPT_2;
*repptr++ = 4;
*repptr++ = SCR_SPI;
*repptr++ = 0xe9; //SCR_LOOP_3;
*repptr++ = 1;
*repptr++ = blockSize - 1;
}
// request the data read to be sent to us
*repptr++ = CMD_UPLOAD_DATA;
// check return values
if ((temp1=pickit2_write_report(pgm, report)) < 0 ||
(temp2=pickit2_read_report(pgm, report)) < 0)
{
return -1;
}/*
else
{
int i;
DEBUG( "in spi. wrote %d, read %d\n", temp1, temp2);
for (i = 0; i < temp2; i++)
{
DEBUG( "%2.2x ", report[i]);
}
DEBUG( "\n");
}*/
retval = report[1]; // upload-length field
repptr = &report[2]; // actual data starts here
if (res) // copy data if user has specified a storage location
{
memcpy(res, repptr, retval);
res += retval;
}
}
return n_bytes;
}
#if (defined(WIN32NATIVE) && defined(HAVE_LIBHID))
/*
Func: open_hid()
Desc: finds & opens device having specified VID & PID.
Retn: Handle of open device or INVALID_HANDLE_VALUE on fail
Note this routine is a modified function from:
usbhidiocDlg.cpp : implementation file
Project: usbhidioc.cpp
Version: 3.0
Date: 7/18/05
by Jan Axelson (jan@Lvr.com)
*/
static HANDLE open_hid(unsigned short vid, unsigned short pid)
{
//Use a series of API calls to find a HID with a specified Vendor IF and Product ID.
HANDLE returnHandle = INVALID_HANDLE_VALUE;
HIDD_ATTRIBUTES Attributes;
// DWORD DeviceUsage;
SP_DEVICE_INTERFACE_DATA devInfoData;
BOOL LastDevice = FALSE;
int MemberIndex = 0;
LONG Result;
// were global, now just local scrap
int Length = 0;
PSP_DEVICE_INTERFACE_DETAIL_DATA detailData = NULL;
HANDLE DeviceHandle=NULL;
GUID HidGuid;
HANDLE hDevInfo;
ULONG Required;
BOOL MyDeviceDetected = 0;
/*
API function: HidD_GetHidGuid
Get the GUID for all system HIDs.
Returns: the GUID in HidGuid.
*/
HidD_GetHidGuid(&HidGuid);
DEBUG("\nHidD_GetHidGuid returned.\n");
/*
API function: SetupDiGetClassDevs
Returns: a handle to a device information set for all installed devices.
Requires: the GUID returned by GetHidGuid.
*/
hDevInfo=SetupDiGetClassDevs
(&HidGuid,
NULL,
NULL,
DIGCF_PRESENT|DIGCF_INTERFACEDEVICE);
DEBUG("\nSetupDiGetClassDevs returned 0x%x\n", hDevInfo);
devInfoData.cbSize = sizeof(devInfoData);
//Step through the available devices looking for the one we want.
//Quit on detecting the desired device or checking all available devices without success.
MemberIndex = 0;
LastDevice = FALSE;
do
{
/*
API function: SetupDiEnumDeviceInterfaces
On return, MyDeviceInterfaceData contains the handle to a
SP_DEVICE_INTERFACE_DATA structure for a detected device.
Requires:
The DeviceInfoSet returned in SetupDiGetClassDevs.
The HidGuid returned in GetHidGuid.
An index to specify a device.
*/
Result=SetupDiEnumDeviceInterfaces
(hDevInfo,
0,
&HidGuid,
MemberIndex,
&devInfoData);
DEBUG("\nSetupDiEnumDeviceInterfaces returned 0x%x\n", Result);
if (Result != 0)
{
//A device has been detected, so get more information about it.
/*
API function: SetupDiGetDeviceInterfaceDetail
Returns: an SP_DEVICE_INTERFACE_DETAIL_DATA structure
containing information about a device.
To retrieve the information, call this function twice.
The first time returns the size of the structure in Length.
The second time returns a pointer to the data in DeviceInfoSet.
Requires:
A DeviceInfoSet returned by SetupDiGetClassDevs
The SP_DEVICE_INTERFACE_DATA structure returned by SetupDiEnumDeviceInterfaces.
The final parameter is an optional pointer to an SP_DEV_INFO_DATA structure.
This application doesn't retrieve or use the structure.
If retrieving the structure, set
MyDeviceInfoData.cbSize = length of MyDeviceInfoData.
and pass the structure's address.
*/
//Get the Length value.
//The call will return with a "buffer too small" error which can be ignored.
Result = SetupDiGetDeviceInterfaceDetail
(hDevInfo,
&devInfoData,
NULL,
0,
&Length,
NULL);
DEBUG("\nSetupDiGetDeviceInterfaceDetail returned 0x%x\n", Result);
//Allocate memory for the hDevInfo structure, using the returned Length.
detailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(Length);
//Set cbSize in the detailData structure.
detailData -> cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
//Call the function again, this time passing it the returned buffer size.
Result = SetupDiGetDeviceInterfaceDetail
(hDevInfo,
&devInfoData,
detailData,
Length,
&Required,
NULL);
// Open a handle to the device.
// To enable retrieving information about a system mouse or keyboard,
// don't request Read or Write access for this handle.
/*
API function: CreateFile
Returns: a handle that enables reading and writing to the device.
Requires:
The DevicePath in the detailData structure
returned by SetupDiGetDeviceInterfaceDetail.
*/
DeviceHandle=CreateFile
(detailData->DevicePath,
0,
FILE_SHARE_READ|FILE_SHARE_WRITE,
(LPSECURITY_ATTRIBUTES)NULL,
OPEN_EXISTING,
0,
NULL);
DEBUG("CreateFile(): %s\n", detailData->DevicePath);
/*
API function: HidD_GetAttributes
Requests information from the device.
Requires: the handle returned by CreateFile.
Returns: a HIDD_ATTRIBUTES structure containing
the Vendor ID, Product ID, and Product Version Number.
Use this information to decide if the detected device is
the one we're looking for.
*/
//Set the Size to the number of bytes in the structure.
Attributes.Size = sizeof(Attributes);