/* Universal functions: for both SPI and TPI */
static int aspspi_initialize(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char temp[4] = {0, 0, 0, 0};
unsigned char res[4];
IMPORT_PDATA(pgm);
if (verbose > 2)
fprintf(stderr, "%s: aspspi_initialize()\n", progname);
/* get capabilities */
if(aspspi_transmit(pgm, 1, USBASP_FUNC_GETCAPABILITIES, temp, res, sizeof(res)) == 4)
pdata->capabilities = res[0] | ((unsigned int)res[1] << 8) | ((unsigned int)res[2] << 16) | ((unsigned int)res[3] << 24);
else
pdata->capabilities = 0;
/* set sck period */
pgm->set_sck_period(pgm, pgm->bitclock);
/* connect to target device */
aspspi_transmit(pgm, 1, USBASP_FUNC_CONNECT, temp, res, sizeof(res));
/* wait, so device is ready to receive commands */
usleep(10000);
return 0;
}
/* Universal functions: for both SPI and TPI */
static int usbasp_initialize(PROGRAMMER * pgm, AVRPART * p)
{
unsigned char temp[4];
unsigned char res[4];
IMPORT_PDATA(pgm);
if (verbose > 2)
fprintf(stderr, "%s: usbasp_initialize()\n", progname);
/* get capabilities */
memset(temp, 0, sizeof(temp));
if(usbasp_transmit(pgm, 1, USBASP_FUNC_GETCAPABILITIES, temp, res, sizeof(res)) == 4)
pdata->capabilities = res[0] | ((unsigned int)res[1] << 8) | ((unsigned int)res[2] << 16) | ((unsigned int)res[3] << 24);
else
pdata->capabilities = 0;
pdata->use_tpi = ((pdata->capabilities & USBASP_CAP_TPI) != 0 && (p->flags & AVRPART_HAS_TPI) != 0) ? 1 : 0;
if(pdata->use_tpi)
{
/* calc tpiclk delay */
int dly = 1500000.0 * pgm->bitclock;
if(dly < 1)
dly = 1;
else if(dly > 2047)
dly = 2047;
temp[0] = dly;
temp[1] = dly >> 8;
/* connect */
usbasp_transmit(pgm, 1, USBASP_FUNC_TPI_CONNECT, temp, res, sizeof(res));
/* change interface */
pgm->program_enable = usbasp_tpi_program_enable;
pgm->chip_erase = usbasp_tpi_chip_erase;
pgm->cmd = usbasp_tpi_cmd;
pgm->read_byte = usbasp_tpi_read_byte;
pgm->write_byte = usbasp_tpi_write_byte;
pgm->paged_write = usbasp_tpi_paged_write;
pgm->paged_load = usbasp_tpi_paged_load;
pgm->set_sck_period = usbasp_tpi_set_sck_period;
}
