967fecbf69
lua_runtime now loads the running script from a new LittleFS-backed drivers::storage (joltwallet/littlefs, the project's fifth external managed component -- mounts the "storage" partition already reserved in partitions.csv), falling back to the compiled-in default script only on first boot. transport exposes GET/POST /api/script -- raw Lua text, not JSON, since json_helpers.h can't round-trip scripts safely -- relayed to lua_runtime via the same callback-registration pattern already used for LedColorHandler, keeping transport free of a dependency on lua_runtime. lua_runtime_reload() persists and hot-swaps to a fresh Lua state immediately, no reboot. Verified on real ESP32-C6 hardware: script loads via kvida-sdk, an edited script hot-reloads within one tick, and the edit survives a power cycle (proving LittleFS persistence, not just an in-RAM change). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
80 lines
1.6 KiB
C++
80 lines
1.6 KiB
C++
#include "storage.h"
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#include <cstdio>
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#include "esp_log.h"
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#include "esp_littlefs.h"
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namespace kvida::drivers {
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namespace {
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constexpr const char *TAG = "storage";
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bool g_mounted = false;
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} // namespace
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void storage_init()
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{
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if (g_mounted) {
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return;
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}
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esp_vfs_littlefs_conf_t conf = {};
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conf.base_path = "/storage";
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conf.partition_label = "storage";
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conf.format_if_mount_failed = true;
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conf.grow_on_mount = false;
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esp_err_t err = esp_vfs_littlefs_register(&conf);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "esp_vfs_littlefs_register failed: %s", esp_err_to_name(err));
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return;
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}
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g_mounted = true;
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}
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bool storage_read_file(const char *path, char *buf, size_t cap, size_t *out_len)
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{
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if (!g_mounted || cap == 0) {
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return false;
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}
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FILE *f = fopen(path, "r");
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if (!f) {
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return false;
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}
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size_t n = fread(buf, 1, cap - 1, f);
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bool truncated = !feof(f);
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fclose(f);
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if (truncated) {
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ESP_LOGE(TAG, "%s is larger than the %u-byte read buffer", path, static_cast<unsigned>(cap - 1));
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return false;
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}
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buf[n] = '\0';
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if (out_len) {
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*out_len = n;
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}
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return true;
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}
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bool storage_write_file(const char *path, const char *data, size_t len)
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{
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if (!g_mounted) {
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return false;
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}
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FILE *f = fopen(path, "w");
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if (!f) {
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ESP_LOGE(TAG, "fopen(%s, \"w\") failed", path);
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return false;
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}
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size_t written = fwrite(data, 1, len, f);
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fclose(f);
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return written == len;
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}
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} // namespace kvida::drivers
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