Air quality sensor
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esp-airsensor/main/settings.c

160 lines
4.1 KiB

//
// Created by MightyPork on 2018/11/18.
//
#include <nvs.h>
#include <string.h>
#include <esp_log.h>
#include "settings.h"
#include "utils.h"
static const char * TAG = "settings.c";
static uint16_t app_boot_count = 0;
#undef X
#define X(pre,name,post,def,gen_nvs,nvs_format,save_prefix) .name = def,
const struct cspemu_settings defaults = {
SETTINGS_XTABLE()
};
struct cspemu_settings g_Settings;
struct cspemu_globals g_State = {
.wifi_inited = false,
};
static nvs_handle storage = 0;
extern nvs_handle g_nvs_storage __attribute__((alias("storage")));
void settings_init(void)
{
ESP_ERROR_CHECK(nvs_open("cspemu", NVS_READWRITE, &storage));
}
union fu {
float f;
uint32_t u;
};
/** Read float from NVS. See `nvs_get_u32` for more info. */
static esp_err_t nvs_get_f32 (nvs_handle_t handle, const char* key, float* out_value) {
uint32_t u = 0;
esp_err_t rv = nvs_get_u32(handle, key, &u);
if (rv != ESP_OK) {
return rv;
}
union fu reinterpret = {
.u = u,
};
*out_value = reinterpret.f;
return ESP_OK;
}
/** Write float to NVS. See `nvs_set_u32` for more info. */
static esp_err_t nvs_set_f32 (nvs_handle_t handle, const char* key, float value) {
union fu reinterpret = {
.f = value,
};
return nvs_set_u32(handle, key, reinterpret.u);
}
/** Dummy read from NVS; placeholder for XTABLE entries with manually implemented getters */
static esp_err_t nvs_get_none(nvs_handle handle, const char* key, void* out_value) {
return ESP_OK;
}
/** Dummy write to NVS; placeholder for XTABLE entries with manually implemented setters */
static esp_err_t nvs_set_none(nvs_handle handle, const char* key, void* value) {
return ESP_OK;
}
void settings_load(void)
{
esp_err_t rv;
memcpy(&g_Settings, &defaults, sizeof(struct cspemu_settings));
// abort on failure other than "not found"
#define NVSCHECK(callback) \
do { \
rv = callback; \
if (rv != ESP_OK && rv != ESP_ERR_NVS_NOT_FOUND) { \
ESP_LOGE(TAG, "NVS ERR %d", rv); \
abort(); \
} \
} while(0)
NVSCHECK(nvs_get_u16(storage, "bootcount", &app_boot_count));
ESP_LOGI(TAG, "NVS restored bootcount %d", app_boot_count);
app_boot_count++;
NVSCHECK(nvs_set_u16(storage, "bootcount", app_boot_count));
// version will be used for settings format upgrades
uint8_t version = 0;
NVSCHECK(nvs_get_u8(storage, "version", &version));
#undef X
#define X(pre, name, post, def, gen_nvs, nvs_format, save_prefix) \
if (gen_nvs) { \
NVSCHECK(nvs_get_##nvs_format(storage, STR(name), save_prefix g_Settings. name)); \
}
SETTINGS_XTABLE()
// custom values
#define ensure_str_terminated(str, len) if (strnlen((str), (len)) >= (len)) { (str)[(len)-1] = 0; }
{
size_t capacity = CONSOLE_PW_LEN;
NVSCHECK(nvs_get_str(storage, "tcpp_pw", g_Settings.console_pw, &capacity));
ensure_str_terminated(g_Settings.console_pw, CONSOLE_PW_LEN);
}
{
size_t capacity = NTP_SRV_LEN;
NVSCHECK(nvs_get_str(storage, "ntp_srv", g_Settings.ntp_srv, &capacity));
ensure_str_terminated(g_Settings.ntp_srv, NTP_SRV_LEN);
}
}
void settings_persist(enum settings_key_enum what)
{
esp_err_t rv;
char name[24];
#undef NVSCHECK
#define NVSCHECK(callback) \
do { \
rv = (callback); \
if (rv != ESP_OK) { \
ESP_LOGE(TAG, "NVS ERR %d", rv); \
abort(); \
} \
} while(0)
#undef X
#define X(pre,name,post,def,gen_nvs,nvs_format,save_prefix) \
if ((gen_nvs) && ((what)==SETTINGS_ALL || (what)==SETTINGS_## name)) { \
NVSCHECK(nvs_set_##nvs_format(storage, STR(name), g_Settings. name)); \
}
SETTINGS_XTABLE()
// custom values
if (what==SETTINGS_ALL || what==SETTINGS_console_pw) {
NVSCHECK(nvs_set_str(storage, "tcpp_pw", g_Settings.console_pw));
}
if (what==SETTINGS_ALL || what==SETTINGS_ntp_srv) {
NVSCHECK(nvs_set_str(storage, "ntp_srv", g_Settings.ntp_srv));
}
}
uint16_t app_get_bootcount()
{
return app_boot_count;
}