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Add -xnoautoreset for the -c urclock programmer

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This commit is contained in:
Stefan Rueger
2024-07-28 17:57:51 +01:00
parent 0d7524deeb
commit c3d97e923e
1 changed files with 14 additions and 10 deletions
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24
src/urclock.c
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@@ -319,6 +319,7 @@ typedef struct {
nodate, // Don't store application filename and no date either
nostore, // Don't store metadata except a flag saying so
nometadata, // Don't support metadata at all
noautoreset, // Don't reset the board after opening the serial port
delay, // Additional delay [ms] after resetting the board, can be negative
strict; // Use strict synchronisation protocol
@@ -2247,16 +2248,18 @@ static int urclock_open(PROGRAMMER *pgm, const char *port) {
if(serial_open(port, pinfo, &pgm->fd) == -1)
return -1;
// This code assumes a negative-logic USB to TTL serial adapter
// Set RTS/DTR high to discharge the series-capacitor, if present
serial_set_dtr_rts(&pgm->fd, 0);
usleep(20*1000);
// Pull the RTS/DTR line low to reset AVR
serial_set_dtr_rts(&pgm->fd, 1);
// Max 100 us: charging a cap longer creates a high reset spike above Vcc
usleep(100);
// Set the RTS/DTR line back to high, so direct connection to reset works
serial_set_dtr_rts(&pgm->fd, 0);
if(!ur.noautoreset) {
// This code assumes a negative-logic USB to TTL serial adapter
// Set RTS/DTR high to discharge the series-capacitor, if present
serial_set_dtr_rts(&pgm->fd, 0);
usleep(20*1000);
// Pull the RTS/DTR line low to reset AVR
serial_set_dtr_rts(&pgm->fd, 1);
// Max 100 us: charging a cap longer creates a high reset spike above Vcc
usleep(100);
// Set the RTS/DTR line back to high, so direct connection to reset works
serial_set_dtr_rts(&pgm->fd, 0);
}
if((120+ur.delay) > 0)
usleep((120+ur.delay)*1000); // Wait until board comes out of reset
@@ -2477,6 +2480,7 @@ static int urclock_parseextparms(const PROGRAMMER *pgm, LISTID extparms) {
{"nodate", &ur.nodate, NA, "Do not store application filename and no date either"},
{"nostore", &ur.nostore, NA, "Do not store metadata except a flag saying so"},
{"nometadata", &ur.nometadata, NA, "Do not support metadata at all"},
{"noautoreset", &ur.nometadata, NA, "Do not reset the board after opening the serial port"},
{"delay", &ur.delay, ARG, "Add delay [ms] after reset, can be negative"},
{"strict", &ur.strict, NA, "Use strict synchronisation protocol"},
{"help", &help, NA, "Show this help menu and exit"},