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add support for linuxgpio exitspecs

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This commit is contained in:
MCUdude
2025-05-03 21:33:34 +02:00
parent 2f61007390
commit 2648e4378d
1 changed files with 55 additions and 12 deletions
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67
src/linuxgpio.c
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@@ -328,6 +328,43 @@ void linuxgpio_teardown(PROGRAMMER *pgm) {
pgm->cookie = NULL;
}
static int linuxgpio_parseexitspecs(PROGRAMMER *pgm, const char *sp) {
char *cp, *s, *str = mmt_strdup(sp);
int rv = 0;
bool help = false;
s = str;
while((cp = strtok(s, ","))) {
s = NULL;
if(str_eq(cp, "reset")) {
pgm->exit_reset = EXIT_RESET_ENABLED;
continue;
}
if(str_eq(cp, "noreset")) {
pgm->exit_reset = EXIT_RESET_DISABLED;
continue;
}
if(str_eq(cp, "help")) {
help = true;
rv = LIBAVRDUDE_EXIT;
}
if(!help) {
pmsg_error("invalid exitspec parameter -E %s\n", cp);
rv = -1;
}
msg_error("%s -c %s exitspec parameter options:\n", progname, pgmid);
msg_error(" -E reset Programmer will keep the reset line low after programming session\n");
msg_error(" -E noreset Programmer will not keep the reset line low after programming session\n");
msg_error(" -E help Show this help menu and exit\n");
mmt_free(str);
return rv;
}
mmt_free(str);
return rv;
}
// libgpiod backend for the linuxgpio programmer
#ifdef HAVE_LIBGPIOD
@@ -585,21 +622,26 @@ static void linuxgpio_libgpiod_close(PROGRAMMER *pgm) {
}
}
// Configure RESET as input.
if(linuxgpio_libgpiod_lines[PIN_AVR_RESET] != NULL) {
if(pgm->exit_reset == EXIT_RESET_ENABLED) // Exit with RESET pin high
pgm->setpin(pgm, PIN_AVR_RESET, 1);
else if(pgm->exit_reset == EXIT_RESET_ENABLED) // Exit with RESET pin low
pgm->setpin(pgm, PIN_AVR_RESET, 0);
else { // Exit with RESET pin as input (default behaviour)
if(linuxgpio_libgpiod_lines[PIN_AVR_RESET] != NULL) {
#if HAVE_LIBGPIOD_V1_6 || HAVE_LIBGPIOD_V2
int r = gpiod_line_set_direction_input(linuxgpio_libgpiod_lines[PIN_AVR_RESET]);
#else
int r = gpiod_line_set_direction_input(&linuxgpio_libgpiod_lines[PIN_AVR_RESET]);
#endif
#if HAVE_LIBGPIOD_V1_6 || HAVE_LIBGPIOD_V2
int r = gpiod_line_set_direction_input(linuxgpio_libgpiod_lines[PIN_AVR_RESET]);
#else
int r = gpiod_line_set_direction_input(&linuxgpio_libgpiod_lines[PIN_AVR_RESET]);
#endif
if(r != 0) {
msg_error("failed to set pin %u to input: %s\n",
linuxgpio_get_gpio_num(linuxgpio_libgpiod_lines[PIN_AVR_RESET]), strerror(errno));
if(r != 0) {
msg_error("failed to set pin %u to input: %s\n",
linuxgpio_get_gpio_num(linuxgpio_libgpiod_lines[PIN_AVR_RESET]), strerror(errno));
}
gpiod_line_release(linuxgpio_libgpiod_lines[PIN_AVR_RESET]);
linuxgpio_libgpiod_lines[PIN_AVR_RESET] = NULL;
}
gpiod_line_release(linuxgpio_libgpiod_lines[PIN_AVR_RESET]);
linuxgpio_libgpiod_lines[PIN_AVR_RESET] = NULL;
}
}
@@ -713,6 +755,7 @@ void linuxgpio_initpgm(PROGRAMMER *pgm) {
pgm->write_byte = avr_write_byte_default;
pgm->setup = linuxgpio_setup;
pgm->teardown = linuxgpio_teardown;
pgm->parseexitspecs = linuxgpio_parseexitspecs;
#ifdef HAVE_LIBGPIOD
if(libgpiod_is_working()) {