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patch #9963: UsbAsp 3 MHz patch for UsbAsp-flash firmware

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* usbasp.c: Implement 3 MHz clock option including capability check
* usbasp.h: (Dito.)

Submitted by Marcin Miskiewic



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1446 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch
2020-09-18 21:52:12 +00:00
parent 1d2e4ef388
commit 9b3762a812
4 changed files with 29 additions and 5 deletions
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24
usbasp.c
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@@ -121,6 +121,7 @@ struct pdata
unsigned int capabilities;
int use_tpi;
int section_e;
int sck_3mhz;
};
#define PDATA(pgm) ((struct pdata *)(pgm->cookie))
@@ -597,6 +598,9 @@ static int usbasp_initialize(PROGRAMMER * pgm, AVRPART * p)
pdata->capabilities = 0;
pdata->use_tpi = ((pdata->capabilities & USBASP_CAP_TPI) != 0 && (p->flags & AVRPART_HAS_TPI) != 0) ? 1 : 0;
// query support for 3 MHz SCK in UsbAsp-flash firmware
// https://github.com/nofeletru/UsbAsp-flash
pdata->sck_3mhz = ((pdata->capabilities & USBASP_CAP_3MHZ) != 0) ? 1 :0;
if(pdata->use_tpi)
{
@@ -863,6 +867,7 @@ static int usbasp_spi_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
/* The list of SCK frequencies in Hz supported by USBasp */
static struct sckoptions_t usbaspSCKoptions[] = {
{ USBASP_ISP_SCK_3000, 3000000 },
{ USBASP_ISP_SCK_1500, 1500000 },
{ USBASP_ISP_SCK_750, 750000 },
{ USBASP_ISP_SCK_375, 375000 },
@@ -908,14 +913,23 @@ static int usbasp_spi_set_sck_period(PROGRAMMER *pgm, double sckperiod)
avrdude_message(MSG_NOTICE2, "%s: try to set SCK period to %g s (= %i Hz)\n", progname, sckperiod, sckfreq);
if (sckfreq >= usbaspSCKoptions[0].frequency) {
clockoption = usbaspSCKoptions[0].id;
usefreq = usbaspSCKoptions[0].frequency;
/* Check if programmer is capable of 3 MHz SCK, if not then ommit 3 MHz setting */
int i;
if (PDATA(pgm)->sck_3mhz) {
avrdude_message(MSG_NOTICE2, "%s: connected USBasp is capable of 3 MHz SCK\n",progname);
i = 0;
} else {
avrdude_message(MSG_NOTICE2, "%s: connected USBasp is not cabable of 3 MHz SCK\n",progname);
i = 1;
}
if (sckfreq >= usbaspSCKoptions[i].frequency) {
clockoption = usbaspSCKoptions[i].id;
usefreq = usbaspSCKoptions[i].frequency;
} else {
/* find clock option next to given clock */
int i;
for (i = 0; i < sizeof(usbaspSCKoptions) / sizeof(usbaspSCKoptions[0]); i++) {
for (; i < sizeof(usbaspSCKoptions) / sizeof(usbaspSCKoptions[0]); i++) {
if (sckfreq >= usbaspSCKoptions[i].frequency - 1) { /* subtract 1 to compensate round errors */
clockoption = usbaspSCKoptions[i].id;
usefreq = usbaspSCKoptions[i].frequency;