I am trying to save data by using the setting subsystem of nrf connect sdk, and i <init> and <register> the settings, and when the setting_load function excuted, the h_set callback function of the setting handler i register above was not called, and i don't know what leads to the problem. my code is followed, can someone help me to address it, thanks so much.
static int8_t foo_val = -1;
static int foo_settings_set(const char *name, size_t len,
settings_read_cb read_cb, void *cb_arg)
{
printk("foo_settings_set\n");
const char *next;
int rc;
if (settings_name_steq(name, "bar", &next) && !next) {
if (len != sizeof(foo_val)) {
return -EINVAL;
}
rc = read_cb(cb_arg, &foo_val, sizeof(foo_val));
if (rc >= 0) {
return 0;
}
return rc;
}
return -ENOENT;
}
struct settings_handler my_conf = {
.name = "foo",
.h_set = foo_settings_set
};
void main(void)
{
int rc;
rc = settings_subsys_init();
printk("rc1 = %d", rc);
rc = settings_register(&my_conf);
printk("rc2 = %d", rc);
rc = settings_load();
printk("rc3 = %d", rc);
rc = settings_load_subtree("foo");
printk("rc4 = %d", rc);
rc = settings_load_subtree("foo/bar");
printk("rc5 = %d", rc);
foo_val++;
settings_save_one("foo/bar", &foo_val, sizeof(foo_val));
printk("foo: %d\n", foo_val);
k_msleep(1000);
sys_reboot(SYS_REBOOT_COLD);
}
and the debug message shows that the <foo_settings_set> function is not called.
00> *** Booting Zephyr OS build v2.7.99-ncs1 *** 00> rc1 = 0rc2 = 0rc3 = 0rc4 = 0rc5 = 0foo: 0 00> *** Booting Zephyr OS build v2.7.99-ncs1 *** 00> rc1 = 0rc2 = 0rc3 = 0rc4 = 0rc5 = 0foo: 0 00> *** Booting Zephyr OS build v2.7.99-ncs1 *** 00> rc1 = 0rc2 = 0rc3 = 0rc4 = 0rc5 = 0foo: 0 00> *** Booting Zephyr OS build v2.7.99-ncs1 *** 00> rc1 = 0rc2 = 0rc3 = 0rc4 = 0rc5 = 0foo: 0 00> *** Booting Zephyr OS build v2.7.99-ncs1 *** 00> rc1 = 0rc2 = 0rc3 = 0rc4 = 0rc5 = 0foo: 0 00> *** Booting Zephyr OS build v2.7.99-ncs1 *** 00> rc1 = 0rc2 = 0rc3 = 0rc4 = 0rc5 = 0foo: 0
