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st-info add voltage printout and query #1487

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st-info add voltage printout and query #1487

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27 changes: 27 additions & 0 deletions src/st-info/info.c
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ static void usage(void) {
puts("st-info --sram [--connect-under-reset] [--hot-plug] [--freq=<kHz>]");
puts("st-info --chipid [--connect-under-reset] [--hot-plug] [--freq=<kHz>]");
puts("st-info --descr [--connect-under-reset] [--hot-plug] [--freq=<kHz>]");
puts("st-info --voltage [--connect-under-reset] [--hot-plug] [--freq=<kHz>]");
}

static void stlink_print_version(stlink_t *sl) {
Expand All @@ -49,6 +50,17 @@ static void stlink_print_info(stlink_t *sl) {

params = stlink_chipid_get_params(sl->chip_id);
if(params) { printf(" dev-type: %s\n", params->dev_type); }

// Print target voltage if supported
int32_t voltage_mv = -1;
if(sl->version.stlink_v != 1) {
voltage_mv = stlink_target_voltage(sl);
}
if(voltage_mv >= 0) {
printf(" voltage: %d mV\n", voltage_mv);
} else {
printf(" voltage: n/a\n");
}
}

static void stlink_probe(enum connect_type connect, int32_t freq) {
Expand Down Expand Up @@ -127,6 +139,21 @@ static int32_t print_data(int32_t ac, char **av) {
if(params == NULL) { return (-1); }

printf("%s\n", params->dev_type);
} else if(strcmp(av[1], "--voltage") == 0) {
int32_t voltage_mv = -1;
if(sl->version.stlink_v != 1) {
voltage_mv = stlink_target_voltage(sl);
}
if(voltage_mv >= 0) {
printf("%d\n", voltage_mv);
} else {
fprintf(stderr, "Failed to read target voltage\n");
if(sl) {
stlink_exit_debug_mode(sl);
stlink_close(sl);
}
return (-1);
}
}

if(sl) {
Expand Down
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