319 lines
10 KiB
C
319 lines
10 KiB
C
#include <string.h>
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#include "esp_partition.h"
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#include "esp_err.h"
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#include "esp_log.h"
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#include "esp_crc.h"
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#include "storage.h"
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#define TAG "PARAMS"
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// ============================================================================
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// PARAMETER TABLE GENERATION
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// ============================================================================
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// Helper macros to construct initializers
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#define PARAM_VALUE_INIT(type, val) {.type = val}
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#define PARAM_TYPE_ENUM(type) PARAM_TYPE_##type
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#define PARAM_NAME_STR(name) #name
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// Generate parameter table with live values (initialized to defaults)
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#define PARAM_DEF(name, type, default_val) PARAM_VALUE_INIT(type, default_val),
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param_value_t parameter_table[NUM_PARAMS] = {
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PARAM_LIST
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};
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#undef PARAM_DEF
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// Generate default values array
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#define PARAM_DEF(name, type, default_val) PARAM_VALUE_INIT(type, default_val),
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const param_value_t parameter_defaults[NUM_PARAMS] = {
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PARAM_LIST
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};
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#undef PARAM_DEF
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// Generate parameter types array
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#define PARAM_DEF(name, type, default_val) PARAM_TYPE_ENUM(type),
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const param_type_e parameter_types[NUM_PARAMS] = {
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PARAM_LIST
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};
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#undef PARAM_DEF
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// Generate parameter names array
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#define PARAM_DEF(name, type, default_val) PARAM_NAME_STR(name),
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const char* parameter_names[NUM_PARAMS] = {
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PARAM_LIST
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};
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#undef PARAM_DEF
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// Partition pointer
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static const esp_partition_t *storage_partition = NULL;
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// Log head tracking
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static uint32_t log_head_index = 0;
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static bool log_initialized = false;
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// Calculate offset for log area (after parameters sector)
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#define LOG_START_OFFSET FLASH_SECTOR_SIZE
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// ============================================================================
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// PARAMETER FUNCTIONS
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// ============================================================================
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param_value_t get_param(param_idx_t id) {
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if (id >= NUM_PARAMS) {
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ESP_LOGE(TAG, "Invalid parameter ID: %d", id);
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param_value_t err = {0};
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return err;
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}
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return parameter_table[id];
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}
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esp_err_t set_param(param_idx_t id, param_value_t val) {
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if (id >= NUM_PARAMS) {
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ESP_LOGE(TAG, "Invalid parameter ID: %d", id);
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return ESP_ERR_INVALID_ARG;
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}
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parameter_table[id] = val;
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ESP_LOGI(TAG, "Parameter %d (%s) set (not committed)", id, parameter_names[id]);
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return ESP_OK;
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}
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param_type_e get_param_type(param_idx_t id) {
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if (id >= NUM_PARAMS) {
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return PARAM_TYPE_u64; // Default fallback
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}
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return parameter_types[id];
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}
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const char* get_param_name(param_idx_t id) {
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if (id >= NUM_PARAMS) {
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return "INVALID";
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}
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return parameter_names[id];
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}
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param_value_t get_param_default(param_idx_t id) {
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if (id >= NUM_PARAMS) {
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param_value_t err = {0};
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return err;
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}
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return parameter_defaults[id];
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}
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esp_err_t commit_params() {
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if (storage_partition == NULL) {
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ESP_LOGE(TAG, "Storage partition not initialized");
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return ESP_FAIL;
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}
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// Prepare storage buffer with parameters and CRCs
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param_stored_t params_to_store[NUM_PARAMS];
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for (int i = 0; i < NUM_PARAMS; i++) {
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params_to_store[i].val = parameter_table[i];
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// Calculate CRC32 for each parameter value
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params_to_store[i].crc = esp_crc32_le(0, (uint8_t*)¶meter_table[i], sizeof(param_value_t));
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}
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// Erase the first sector (4096 bytes)
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esp_err_t err = esp_partition_erase_range(storage_partition, PARAMS_OFFSET, FLASH_SECTOR_SIZE);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to erase parameter sector: %s", esp_err_to_name(err));
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return ESP_FAIL;
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}
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// Write parameters to flash
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err = esp_partition_write(storage_partition, PARAMS_OFFSET, params_to_store, PARAMS_TOTAL_SIZE);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to write parameters: %s", esp_err_to_name(err));
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return ESP_FAIL;
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}
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ESP_LOGI(TAG, "Parameters committed to flash successfully");
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return ESP_OK;
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}
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// ============================================================================
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// INITIALIZATION FUNCTIONS
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// ============================================================================
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esp_err_t storage_init(void) {
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// Find the partition labeled "storage"
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storage_partition = esp_partition_find_first(ESP_PARTITION_TYPE_DATA,
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ESP_PARTITION_SUBTYPE_ANY,
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"storage");
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if (storage_partition == NULL) {
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ESP_LOGE(TAG, "Storage partition not found");
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return ESP_ERR_NOT_FOUND;
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}
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ESP_LOGI(TAG, "Storage partition found: size=%lu bytes", (unsigned long)storage_partition->size);
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// Load parameters from flash
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param_stored_t params_stored[NUM_PARAMS];
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esp_err_t err = esp_partition_read(storage_partition, PARAMS_OFFSET,
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params_stored, PARAMS_TOTAL_SIZE);
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if (err != ESP_OK) {
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ESP_LOGW(TAG, "Failed to read parameters, using defaults");
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return err;
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}
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// Validate and load each parameter
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bool all_valid = true;
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for (int i = 0; i < NUM_PARAMS; i++) {
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uint32_t calculated_crc = esp_crc32_le(0, (uint8_t*)¶ms_stored[i].val,
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sizeof(param_value_t));
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if (calculated_crc == params_stored[i].crc) {
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parameter_table[i] = params_stored[i].val;
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} else {
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ESP_LOGW(TAG, "Parameter %d (%s) failed CRC check, using default",
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i, parameter_names[i]);
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all_valid = false;
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}
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}
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if (all_valid) {
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ESP_LOGI(TAG, "All parameters loaded successfully from flash");
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} else {
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ESP_LOGW(TAG, "Some parameters failed validation, using defaults");
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}
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return ESP_OK;
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}
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// ============================================================================
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// LOGGING FUNCTIONS
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// ============================================================================
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static esp_err_t find_log_head(void) {
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if (storage_partition == NULL) {
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return ESP_ERR_INVALID_STATE;
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}
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// Calculate total log area size
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uint32_t log_area_size = storage_partition->size - LOG_START_OFFSET;
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uint32_t max_entries = log_area_size / LOG_ENTRY_SIZE;
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// Read through entries to find first uninitialized (all 0xFF)
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uint8_t entry[LOG_ENTRY_SIZE];
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uint8_t empty_entry[LOG_ENTRY_SIZE];
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memset(empty_entry, 0xFF, LOG_ENTRY_SIZE);
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// Binary search would be faster, but linear is safer for circular buffer
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for (uint32_t i = 0; i < max_entries; i++) {
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uint32_t offset = LOG_START_OFFSET + (i * LOG_ENTRY_SIZE);
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esp_err_t err = esp_partition_read(storage_partition, offset, entry, LOG_ENTRY_SIZE);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to read log entry at index %lu", (unsigned long)i);
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return err;
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}
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// Check if this entry is uninitialized
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if (memcmp(entry, empty_entry, LOG_ENTRY_SIZE) == 0) {
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log_head_index = i;
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ESP_LOGI(TAG, "Log head found at index %lu", (unsigned long)log_head_index);
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return ESP_OK;
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}
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}
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// If we get here, all entries are full - wrap to beginning
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log_head_index = 0;
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ESP_LOGI(TAG, "Log is full, wrapping to beginning");
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// Erase the first log sector to start fresh
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esp_err_t err = esp_partition_erase_range(storage_partition, LOG_START_OFFSET,
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FLASH_SECTOR_SIZE);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to erase first log sector");
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return err;
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}
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return ESP_OK;
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}
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esp_err_t log_init(void) {
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if (storage_partition == NULL) {
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ESP_LOGE(TAG, "Storage partition not initialized, call storage_init() first");
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return ESP_ERR_INVALID_STATE;
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}
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esp_err_t err = find_log_head();
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if (err != ESP_OK) {
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return err;
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}
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log_initialized = true;
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return ESP_OK;
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}
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esp_err_t write_log(char* entry) {
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if (!log_initialized || storage_partition == NULL) {
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ESP_LOGE(TAG, "Logging not initialized");
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return ESP_FAIL;
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}
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uint32_t log_area_end = storage_partition->size;
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uint32_t max_entries = (log_area_end - LOG_START_OFFSET) / LOG_ENTRY_SIZE;
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//uint32_t max_sectors = max_entries / FLASH_SECTOR_SIZE;
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// Calculate current offset
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uint32_t current_offset = LOG_START_OFFSET + (log_head_index * LOG_ENTRY_SIZE);
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// Check if we need to erase the next sector
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uint32_t current_sector = current_offset / FLASH_SECTOR_SIZE;
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uint32_t next_offset = current_offset + LOG_ENTRY_SIZE;
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if (next_offset >= log_area_end)
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next_offset = LOG_START_OFFSET;
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uint32_t next_sector = next_offset / FLASH_SECTOR_SIZE;
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// If we're crossing into a new sector, check if it needs erasing
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if (next_sector != current_sector) {
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// Check if next sector is uninitialized
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uint8_t check_byte;
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esp_err_t err = esp_partition_read(storage_partition, next_sector * FLASH_SECTOR_SIZE,
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&check_byte, 1);
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if (err == ESP_OK && check_byte != 0xFF) {
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// Sector needs erasing
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ESP_LOGI(TAG, "Erasing sector %lu for log", (unsigned long)next_sector);
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err = esp_partition_erase_range(storage_partition,
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next_sector * FLASH_SECTOR_SIZE,
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FLASH_SECTOR_SIZE);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to erase sector: %s", esp_err_to_name(err));
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return ESP_FAIL;
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}
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} else if (err == ESP_OK) {
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ESP_LOGI(TAG, "Next sector %ld clear, no erasing needed", (unsigned long)next_sector);
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} else {
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ESP_LOGE(TAG, "Error checking byte (sector %ld)", (unsigned long)next_sector);
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}
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}
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// Write the log entry
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esp_err_t err = esp_partition_write(storage_partition, current_offset, entry, LOG_ENTRY_SIZE);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to write log entry: %s", esp_err_to_name(err));
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return ESP_FAIL;
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}
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ESP_LOGI(TAG, "Log @ sector %lu / index %lu / offset %lu", (unsigned long) current_sector, (unsigned long) log_head_index, (unsigned long)current_offset);
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log_head_index++;
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if (log_head_index >= max_entries) {
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log_head_index = 0;
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ESP_LOGI(TAG, "Log wrapped to beginning");
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}
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return ESP_OK;
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}
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void storage_deinit(void) {
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storage_partition = NULL;
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log_initialized = false;
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} |