avrdude/src/usbtiny.h

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/*
* avrdude - A Downloader/Uploader for AVR device programmers
* Copyright (C) 2007 Limor Fried
*
* 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/>.
*/
#ifndef usbtiny_h
#define usbtiny_h
// Generic requests to the USBtiny
#define USBTINY_ECHO 0 // echo test
#define USBTINY_READ 1 // read byte (wIndex:address)
#define USBTINY_WRITE 2 // write byte (wIndex:address, wValue:value)
#define USBTINY_CLR 3 // clear bit (wIndex:address, wValue:bitno)
#define USBTINY_SET 4 // set bit (wIndex:address, wValue:bitno)
// Programming requests
#define USBTINY_POWERUP 5 // apply power (wValue:SCK-period, wIndex:RESET)
#define USBTINY_POWERDOWN 6 // remove power from chip
#define USBTINY_SPI 7 // issue SPI command (wValue:c1c0, wIndex:c3c2)
#define USBTINY_POLL_BYTES 8 // set poll bytes for write (wValue:p1p2)
#define USBTINY_FLASH_READ 9 // read flash (wIndex:address)
#define USBTINY_FLASH_WRITE 10 // write flash (wIndex:address, wValue:timeout)
#define USBTINY_EEPROM_READ 11 // read eeprom (wIndex:address)
#define USBTINY_EEPROM_WRITE 12 // write eeprom (wIndex:address, wValue:timeout)
// Flags to indicate how to set RESET on power up
#define RESET_LOW 0
#define RESET_HIGH 1
// The SCK speed can be set by avrdude, to allow programming of slow-clocked parts
#define SCK_MIN 1 // usec delay (target clock >= 4 MHz)
#define SCK_MAX 250 // usec (target clock >= 16 kHz)
#define SCK_DEFAULT 10 // usec (target clock >= 0.4 MHz)
// How much data, max, do we want to send in one USB packet?
#define CHUNK_SIZE 128 // must be power of 2 less than 256
// The default USB Timeout
#define USB_TIMEOUT 500 // msec
#ifdef __cplusplus
extern "C" {
#endif
extern const char usbtiny_desc[];
Use const in PROGRAMMER function arguments where appropriate In order to get meaningful const properties for the PROGRAMMER, AVRPART and AVRMEM arguments, some code needed to be moved around, otherwise a network of "tainted" assignments risked rendering nothing const: - Change void (*enable)(PROGRAMMER *pgm) to void (*enable)(PROGRAMMER *pgm, const AVRPART *p); this allows changes in the PROGRAMMER structure after the part is known. For example, use TPI, UPDI, PDI functions in that programmer appropriate to the part. This used to be done later in the process, eg, in the initialize() function, which "taints" all other programmer functions wrt const and sometimes requires other finessing with flags etc. Much clearer with the modified enable() interface. - Move TPI initpgm-type code from initialize() to enable() --- note that initpgm() does not have the info at the time when it is called whether or not TPI is required - buspirate.c: move pgm->flag to PDATA(pgm)->flag (so legitimate modification of the flag does not change PROGRAMMER structure) - Move AVRPART_INIT_SMC and AVRPART_WRITE bits from the flags field in AVRPART to jtagmkII.c's private data flags32 fiels as FLAGS32_INIT_SMC and FLAGS32_WRITE bits - Move the xbeeResetPin component to private data in stk500.c as this is needed by xbee when it saddles on the stk500 code (previously, the flags component of the part was re-dedicated to this) - Change the way the "chained" private data are used in jtag3.c whilst keeping the PROGRAMMER structure read-only otherwise - In stk500v2.c move the STK600 pgm update from stk500v2_initialize() to stk500v2_enable() so the former keeps the PROGRAMMER structure read-only (for const assertion). - In usbasp change the code from changing PROGRAMMER functions late to dispatching to TPI or regular SPI protocol functions at runtime; reason being the decision whether to use TPI protocol is done at run-time depending on the capability of the attached programmer Also fixes Issue #1071, the treatment of default eecr value.
2022-08-17 15:05:28 +00:00
void usbtiny_initpgm(PROGRAMMER *pgm);
#ifdef __cplusplus
}
#endif
#endif /* usbtiny_h */