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avr.c: Add generic TPI chip erase function 

git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1166 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
hweisbach 2013-05-06 12:43:47 +00:00
parent a9e1e819c1
commit d46b2e880c
2 changed files with 50 additions and 0 deletions
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1
ChangeLog
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@ -45,6 +45,7 @@
* avrftdi_tpi.c: Do all I/O in terms of pgm->cmd_tpi()-calls instead of
avrftdi_tpi_[read,write]_byte().
Remove unnecessary set_pin call to set MOSI high, speeds up I/O.
* avr.c: Adds avr_tpi_chip_erase() generic TPI chip erase function.
2013-05-02 Hannes Weisbach <hannes_weisbach@gmx.net>

49
avr.c
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@ -54,6 +54,55 @@ int avr_tpi_poll_nvmbsy(PROGRAMMER *pgm)
return (res & TPI_IOREG_NVMCSR_NVMBSY);
}
/* TPI chip erase sequence */
int avr_tpi_chip_erase(PROGRAMMER * pgm, AVRPART * p)
{
int err;
AVRMEM *mem;
if (p->flags & AVRPART_HAS_TPI) {
pgm->pgm_led(pgm, ON);
/* Set Pointer Register */
mem = avr_locate_mem(p, "flash");
if (mem == NULL) {
fprintf(stderr, "No flash memory to erase for part %s\n",
p->desc);
return -1;
}
unsigned char cmd[] = {
/* write pointer register high byte */
(TPI_CMD_SSTPR | 0),
((mem->offset & 0xFF) | 1),
/* and low byte */
(TPI_CMD_SSTPR | 1),
((mem->offset >> 8) & 0xFF),
/* write CHIP_ERASE command to NVMCMD register */
(TPI_CMD_SOUT | TPI_SIO_ADDR(TPI_IOREG_NVMCMD)),
TPI_NVMCMD_CHIP_ERASE,
/* write dummy value to start erase */
TPI_CMD_SST,
0xFF
};
while (avr_tpi_poll_nvmbsy(pgm));
err = pgm->cmd_tpi(pgm, cmd, sizeof(cmd), NULL, 0);
if(err)
return err;
while (avr_tpi_poll_nvmbsy(pgm));
pgm->pgm_led(pgm, OFF);
return 0;
} else {
fprintf(stderr, "%s called for a part that has no TPI\n", __func__);
return -1;
}
}
/* TPI: setup NVMCMD register and pointer register (PR) for read/write/erase */
static int avr_tpi_setup_rw(PROGRAMMER * pgm, AVRMEM * mem,
unsigned long addr, unsigned char nvmcmd)