feat: allow reboot commands only if usb cable is inserted

2025-12-21 17:43:00 +01:00
20 changed files with 150 additions and 520 deletions
--- a/software/boards/RPI_PICO_W/board.c
+++ b/software/boards/RPI_PICO_W/board.c
@@ -1,29 +0,0 @@
-// SPDX-License-Identifier: MIT
-// Copyright (c) 2025 Matthias Blankertz <matthias@blankertz.org>
-
-#include "py/obj.h"
-#include "py/runtime.h"
-#include "py/objstr.h"
-
-#ifndef TONBERRY_GIT_REVISION
-#define TONBERRY_GIT_REVISION "unknown"
-#endif
-#ifndef TONBERRY_VERSION
-#define TONBERRY_VERSION "unknown"
-#endif
-
-static const MP_DEFINE_STR_OBJ(tonberry_git_revision_obj, TONBERRY_GIT_REVISION);
-static const MP_DEFINE_STR_OBJ(tonberry_version_obj, TONBERRY_VERSION);
-
-static const mp_rom_map_elem_t board_module_globals_table[] = {
-    {MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_board)},
-    {MP_ROM_QSTR(MP_QSTR_revision), MP_ROM_PTR(&tonberry_git_revision_obj)},
-    {MP_ROM_QSTR(MP_QSTR_version), MP_ROM_PTR(&tonberry_version_obj)},
-};
-static MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
-
-const mp_obj_module_t board_cmodule = {
-    .base = {&mp_type_module},
-    .globals = (mp_obj_dict_t *)&board_module_globals,
-};
-MP_REGISTER_MODULE(MP_QSTR_board, board_cmodule);
--- a/software/boards/RPI_PICO_W/mpconfigboard.cmake
+++ b/software/boards/RPI_PICO_W/mpconfigboard.cmake
@@ -20,22 +20,3 @@ set(GEN_PINS_CSV_ARG --board-csv "${GEN_PINS_BOARD_CSV}")

 add_link_options("-Wl,--print-memory-usage")
 set(PICO_USE_FASTEST_SUPPORTED_CLOCK 1)
-
-find_program(GIT git)
-
-execute_process(COMMAND ${GIT} rev-parse HEAD
-    WORKING_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}"
-    OUTPUT_VARIABLE TONBERRY_GIT_REVISION
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-)
-
-execute_process(COMMAND ${GIT} describe --match 'v*' --always --dirty
-    WORKING_DIRECTORY "${CMAKE_CURRENT_LIST_DIR}"
-    OUTPUT_VARIABLE TONBERRY_VERSION
-    OUTPUT_STRIP_TRAILING_WHITESPACE
-)
-
-set(MICROPY_SOURCE_BOARD "${CMAKE_CURRENT_LIST_DIR}/board.c")
-set(MICROPY_DEF_BOARD
-    TONBERRY_GIT_REVISION="${TONBERRY_GIT_REVISION}"
-    TONBERRY_VERSION="${TONBERRY_VERSION}")
--- a/software/frontend/index.html
+++ b/software/frontend/index.html
@@ -2,7 +2,7 @@
 <html lang="en">
 <head>
 <meta charset="UTF-8">
-<title>TonBERRY pico</title>
+<title>Device Admin</title>
 <style>
    body {
        font-family: Arial, sans-serif;
@@ -131,17 +131,11 @@
        list-style: none;
    }

-    .footer {
-        font-size: x-small;
-        color: gray;
-        margin-top: 20px;
-    }
-
 </style>
 </head>
 <body>

-<h1>TonBERRY pico</h1>
+<h1>Device Admin</h1>

 <nav>
    <button onclick="showScreen('menu')">🏠 Main Menu</button>
@@ -159,15 +153,13 @@
        <li><button onclick="showScreen('playlist')">Open Playlist Editor</button></li>
        <!-- More screens can be added later -->
    </ul>
-    <hr>
-    <button onclick="requestReboot()">Reboot to bootloader</button>
 </div>

 <!-- CONFIG EDITOR SCREEN -->
 <div id="screen-config" class="screen">
    <h2>Configuration Editor</h2>
    <div id="config-container">Loading…</div>
-    <button id="config-save-btn" disabled>Save &amp; Reboot</button>
+    <button id="config-save-btn" disabled>Save</button>
 </div>

 <!-- PLAYLIST EDITOR SCREEN 1: list of playlists -->
@@ -213,10 +205,6 @@
                    <option value="audioplay">Audioplay (no shuffle, start at previous track)</option>
                </select>
            </div>
-            <div>
-                <label>Playlist name</label>
-                <input type="text" placeholder="Playlist name" id="playlist-edit-name" />
-            </div>
            <div class="flex-horizontal">
                <div style="flex-grow: 1">
                    <label>Tracks</label>
@@ -267,17 +255,7 @@
        </div>
    </div>
 </div>
-<div class="footer">
-    <hr>
-    <div class="flex-horizontal">
-        <div>
-            <a href="https://git.ka.blankertz.org/TonBERRY/tonberry-pico">TonBERRY pico</a>
-        </div>
-        <div>
-            Version: <span id="footer-version">unknown</span>
-        </div>
-    </div>
-</div>
+    
 <script>
    const Screens = {};
    let activeScreen = null;
@@ -316,9 +294,7 @@
                        return;
                    }
            
-                    alert("Configuration saved successfully, device will now reboot/shutdown! " +
-                          "On battery, press Power button after shutdown to restart.");
-                    await fetch('/api/v1/reboot/application', {'method': 'POST'});
+                    alert("Configuration saved successfully!");
                } catch (err) {
                    alert("Error saving configuration: " + err);
                }
@@ -356,13 +332,7 @@
            'root.BUTTON_MAP.PLAY_PAUSE': 'Play/Pause',
            'root.TAG_TIMEOUT_SECS': 'Tag removal timeout (seconds)',
            'root.TAGMODE': 'Tag mode',
-            'root.LED_COUNT': 'Length of WS2182 (Neopixel) LED chain',
-            'root.VOLUME_MAX': 'Maximum volume (0-255)',
-            'root.VOLUME_BOOT': 'Volume at startup (0-255)',
-            'root.LED_MAX': 'Maximum LED brightness (0-255)',
-            'root.WIFI.SSID': 'Network name (SSID) (leave empty for AP mode)',
-            'root.WIFI.PASSPHRASE': 'Password',
-            'root.WIFI.SECURITY': 'Security mode'
+            'root.LED_COUNT': 'Length of WS2182 (Neopixel) LED chain'
        };
        const config_input_override = {
            'root.TAGMODE': {
@@ -372,21 +342,6 @@
                    'tagstartstop': 'Present tag once to start, present again to stop playback'
                }
            },
-            'root.BUTTON_MAP.NEXT':  {
-                'input-type': 'number'
-            },
-            'root.BUTTON_MAP.PREV':  {
-                'input-type': 'number'
-            },
-            'root.BUTTON_MAP.VOLUP':  {
-                'input-type': 'number'
-            },
-            'root.BUTTON_MAP.VOLDOWN':  {
-                'input-type': 'number'
-            },
-            'root.BUTTON_MAP.PLAY_PAUSE':  {
-                'input-type': 'number'
-            },
            'root.IDLE_TIMEOUT_SECS': {
                'input-type': 'number'
            },
@@ -396,30 +351,6 @@
            'root.LED_COUNT': {
                'input-type': 'number'
            },
-            'root.WIFI.SSID': {
-                'input-type': 'text'
-            },
-            'root.WIFI.PASSPHRASE': {
-                'input-type': 'text'
-            },
-            'root.WIFI.SECURITY': {
-                'element': 'select',
-                'values': {
-                    'open': 'Open',
-                    'wpa_wpa2': 'WPA/WPA2 (PSK Mixed)',
-                    'wpa3': 'WPA3 (SAE AES)',
-                    'wpa2_wpa3': 'WPA2/WPA3 (PSK AES)'
-                }
-            },
-            'root.VOLUME_MAX': {
-                'input-type': 'number'
-            },
-            'root.VOLUME_BOOT': {
-                'input-type': 'number'
-            },
-            'root.LED_MAX': {
-                'input-type': 'number'
-            }
        };
    
        function renderObject(obj, path) {
@@ -490,7 +421,7 @@
        
                let val = input.value.trim();
                if (val === "") val = null;
-                else if (!isNaN(val) && input.type != 'text') val = Number(val);
+                else if (!isNaN(val)) val = Number(val);
        
                current[path[path.length - 1]] = val;
            });
@@ -523,7 +454,7 @@
            document.getElementById('playlist-exist-button-delete')
                .addEventListener('click', (e) => {
                    if (lastSelected === null) return;
-                    const tagid = lastSelected.getAttribute('data-tag');
+                    const tagid = lastSelected.innerText;
                    if(confirm(`Really delete playlist ${tagid}?`)) {
                        fetch(`/api/v1/playlist/${tagid}`, {
                            method: 'DELETE'})
@@ -534,7 +465,7 @@
                .addEventListener('click', selectLastTag);
            document.getElementById('playlist-exist-button-edit').addEventListener("click", (e) => {
                if (lastSelected !== null)
-                    showScreen("playlist_edit", {load: lastSelected.getAttribute('data-tag')});
+                    showScreen("playlist_edit", {load: lastSelected.innerText});
            });
            document.getElementById('playlist-exist-list').addEventListener("click", (e) => {
                const node = e.target.closest("li");
@@ -589,9 +520,8 @@
            container.innerHTML = "";
            for (const playlist of playlists) {
                const li = document.createElement("li");
-                li.innerHTML = `${playlist.name} (${playlist.tag})`;
+                li.innerHTML = playlist;
                li.className = "node"
-                li.setAttribute('data-tag', playlist.tag);
                container.appendChild(li)
            }
        }
@@ -616,7 +546,7 @@
            document.getElementById('playlist-exist-list')
                    .querySelectorAll("li")
                    .forEach(n => {
-                        if (n.getAttribute('data-tag') == tagtext) {
+                        if (n.innerText == tagtext) {
                            n.classList.add("selected");
                            lastSelected = n;
                        } else {
@@ -718,8 +648,6 @@
            } else if (playlist.persist === "track" && playlist.shuffle === "no") {
                playlisttype.value = "audioplay";
            }
-            const playlistname = document.getElementById('playlist-edit-name');
-            playlistname.value = playlist.name;
        }

        async function save() {
@@ -742,8 +670,6 @@
                    playlistData.shuffle = "no";
                    break;
            }
-            const playlistname = document.getElementById('playlist-edit-name');
-            playlistData.name = playlistname.value;
            const container = document.getElementById('playlist-edit-list');
            playlistData.paths = [...container.querySelectorAll("li")].map((node) => node.innerText);
            const saveRes = await fetch(`/api/v1/playlist/${playlistId}`,
@@ -808,10 +734,6 @@
        
        async function onShow(intent) {
            document.getElementById('playlist-filebrowser-addtrack').disabled = true;
-            if (intent !== 'refresh') {
-                document.getElementById('playlist-filebrowser-upload-progress').value = 0;
-                document.getElementById("playlist-filebrowser-upload-files").value = "";
-            }
            tree = document.getElementById("playlist-filebrowser-tree");
            tree.innerHTML = "Loading...";
            fetch('/api/v1/audiofiles')
@@ -846,6 +768,7 @@
            if (type === 'directory') {
                const nested = document.createElement('ul');
                node.appendChild(nested);
+                node.classList.add('expanded');
                parent.appendChild(node);
                return nested;
            }
@@ -932,7 +855,7 @@
                    }
                    if (donecount + 1 === totalcount) {
                        // Reload file list from device
-                        onShow('refresh');
+                        onShow();
                    } else {
                        uploadFileHelper(totalcount, donecount + 1, destdir, files.slice(1));
                    }
@@ -959,7 +882,7 @@
            const saveRes = await fetch(`/api/v1/audiofiles?type=directory&location=${location}`,
                  {method: 'POST'});
            // Reload file list from device
-            onShow('refresh');
+            onShow();
        }

        async function deleteItems() {
@@ -980,7 +903,7 @@
                }
            }
            // Reload file list from device
-            onShow('refresh');
+            onShow();
        }
        
        let tree = (() => {
@@ -1041,14 +964,6 @@
        
        return { init, onShow };
    })();
-
-// Misc
-    async function requestReboot() {
-        const resp = await fetch('/api/v1/reboot/bootloader', {'method': 'POST'});
-        if (!resp.ok) {
-            alert('Reboot to bootloader failed: ' + await resp.text());
-        }
-    }
    
 // Initialization
    Object.values(Screens).forEach(screen => {
@@ -1056,13 +971,6 @@
    });

    showScreen("menu");
-
-    fetch('/api/v1/info')
-        .then((resp) => resp.json())
-        .then((info) => {
-            const version = document.getElementById('footer-version');
-            version.innerText = info.version;
-        });
 </script>

 </body>
--- a/software/lib/microdot
+++ b/software/lib/microdot
--- a/software/modules/rp2_sd/module.c
+++ b/software/modules/rp2_sd/module.c
@@ -1,14 +1,11 @@
 // SPDX-License-Identifier: MIT
 // Copyright (c) 2025 Matthias Blankertz <matthias@blankertz.org>

-#include <stdarg.h>
-
 #include "py/obj.h"
 #include "sd.h"

 // Include MicroPython API.
 #include "py/mperrno.h"
-#include "py/mpprint.h"
 #include "py/runtime.h"

 // This module is RP2 specific
@@ -16,14 +13,6 @@

 #include <string.h>

-void sd_printf(const char *fmt, ...)
-{
-    va_list ap;
-    va_start(ap, fmt);
-    mp_vprintf(&mp_sys_stdout_print, fmt, ap);
-    va_end(ap);
-}
-
 const mp_obj_type_t sdcard_type;
 struct sdcard_obj {
    mp_obj_base_t base;
@@ -100,14 +89,11 @@ static mp_obj_t sdcard_writeblocks(mp_obj_t self_obj, mp_obj_t block_obj, mp_obj
    if (bufinfo.len % SD_SECTOR_SIZE != 0)
        mp_raise_ValueError(MP_ERROR_TEXT("Buffer length is invalid"));
    const int nblocks = bufinfo.len / SD_SECTOR_SIZE;
-    bool ret;
-    if (nblocks > 1) {
-        ret = sd_writeblocks(&self->sd_context, start_block, nblocks, bufinfo.buf);
-    } else {
-        ret = sd_writeblock(&self->sd_context, start_block, bufinfo.buf);
+    for (int block = 0; block < nblocks; block++) {
+        // TODO: Implement CMD25 write multiple blocks
+        if (!sd_writeblock(&self->sd_context, start_block + block, bufinfo.buf + block * SD_SECTOR_SIZE))
+            mp_raise_OSError(MP_EIO);
    }
-    if (!ret)
-        mp_raise_OSError(MP_EIO);
    return mp_const_none;
 }
 static MP_DEFINE_CONST_FUN_OBJ_3(sdcard_writeblocks_obj, sdcard_writeblocks);
--- a/software/modules/rp2_sd/sd.c
+++ b/software/modules/rp2_sd/sd.c
@@ -6,7 +6,7 @@
 #include <stdio.h>
 #include <string.h>

-extern void sd_printf(const char *fmt, ...);
+// #define SD_DEBUG

 #define SD_R1_ILLEGAL_COMMAND (1 << 2)

@@ -26,14 +26,14 @@ static bool sd_early_init(void)
    for (int i = 0; i < 500; ++i) {
        if (sd_cmd(0, 0, 1, &buf)) {
 #ifdef SD_DEBUG
-            sd_printf("CMD0 resp %02x\n", buf);
+            printf("CMD0 resp %02hhx\n", buf);
 #endif
            if (buf == 0x01) {
                return true;
            }
        }
 #ifdef SD_DEBUG
-        sd_printf("CMD0 timeout, try again...\n");
+        printf("CMD0 timeout, try again...\n");
 #endif
    }
    return false;
@@ -44,14 +44,14 @@ static bool sd_check_interface_condition(void)
    uint8_t buf[5];
    if (sd_cmd(8, 0x000001AA, 5, buf)) {
        if ((buf[3] & 0xf) != 0x1 || buf[4] != 0xAA) {
-            sd_printf("sd_init: check interface condition failed\n");
+            printf("sd_init: check interface condition failed\n");
            return false;
        }
    } else {
        if (buf[0] & SD_R1_ILLEGAL_COMMAND) {
-            sd_printf("sd_init: check interface condition returned illegal command - old card?\n");
+            printf("sd_init: check interface condition returned illegal command - old card?\n");
        } else {
-            sd_printf("sd_init: check interface condition failed\n");
+            printf("sd_init: check interface condition failed\n");
            return false;
        }
    }
@@ -72,12 +72,12 @@ static bool sd_send_op_cond(void)
        if (!result) {
            if (use_acmd && buf & SD_R1_ILLEGAL_COMMAND) {
 #ifdef SD_DEBUG
-                sd_printf("sd_init: card does not understand ACMD41, try CMD1...\n");
+                printf("sd_init: card does not understand ACMD41, try CMD1...\n");
 #endif
                use_acmd = false;
                continue;
            } else if (buf != 0x01) {
-                sd_printf("sd_init: send_op_cond failed\n");
+                printf("sd_init: send_op_cond failed\n");
                return false;
            } else {
                continue;
@@ -87,7 +87,7 @@ static bool sd_send_op_cond(void)
            return true;
        }
    }
-    sd_printf("sd_init: send_op_cond: timeout waiting for !idle\n");
+    printf("sd_init: send_op_cond: timeout waiting for !idle\n");
    return false;
 }

@@ -107,7 +107,7 @@ static void sd_dump_cid [[maybe_unused]] (void)
        const uint8_t crc = sd_crc7(15, buf);
        const uint8_t card_crc = buf[15] >> 1;
        if (card_crc != crc) {
-            sd_printf("CRC mismatch: Got %02x, expected %02x\n", card_crc, crc);
+            printf("CRC mismatch: Got %02hhx, expected %02hhx\n", card_crc, crc);
            // Some cheap SD cards always report CRC=0, don't fail in that case
            if (card_crc != 0) {
                return;
@@ -122,8 +122,8 @@ static void sd_dump_cid [[maybe_unused]] (void)
        uint32_t psn = buf[9] << 24 | buf[10] << 16 | buf[11] << 8 | buf[12];
        int mdt_year = 2000 + ((buf[13] & 0xf) << 4 | (buf[14] & 0xf0) >> 4);
        int mdt_month = buf[14] & 0x0f;
-        sd_printf("CID: mid: %02x, oid: %.2s, pnm: %.5s, prv: %02x, psn: %08" PRIx32 ", mdt_year: %d, mdt_month: %d\n",
-                  mid, oid, pnm, prv, psn, mdt_year, mdt_month);
+        printf("CID: mid: %02hhx, oid: %.2s, pnm: %.5s, prv: %02hhx, psn: %08" PRIx32 ", mdt_year: %d, mdt_month: %d\n",
+               mid, oid, pnm, prv, psn, mdt_year, mdt_month);
    }
 }

@@ -131,13 +131,13 @@ static bool sd_read_csd(struct sd_context *sd_context)
 {
    uint8_t buf[16];
    if (!sd_cmd_read(9, 0, 16, buf)) {
-        sd_printf("Failed to read CSD\n");
+        printf("Failed to read CSD\n");
        return false;
    }
    const uint8_t crc = sd_crc7(15, buf);
    const uint8_t card_crc = buf[15] >> 1;
    if (card_crc != crc) {
-        sd_printf("CRC mismatch: Got %02x, expected %02x\n", card_crc, crc);
+        printf("CRC mismatch: Got %02hhx, expected %02hhx\n", card_crc, crc);
        // Some cheap SD cards always report CRC=0, don't fail in that case
        if (card_crc != 0) {
            return false;
@@ -151,12 +151,12 @@ static bool sd_read_csd(struct sd_context *sd_context)
    switch (csd_ver) {
    case 0: {
        if (sd_context->sdhc_sdxc) {
-            sd_printf("sd_init: Got CSD v1.0 but card is SDHC/SDXC?\n");
+            printf("sd_init: Got CSD v1.0 but card is SDHC/SDXC?\n");
            return false;
        }
        const unsigned read_bl_len = buf[5] & 0xf;
        if (read_bl_len < 9 || read_bl_len > 11) {
-            sd_printf("Invalid read_bl_len in CSD 1.0\n");
+            printf("Invalid read_bl_len in CSD 1.0\n");
            return false;
        }
        blocksize = 1 << (buf[5] & 0xf);
@@ -176,15 +176,15 @@ static bool sd_read_csd(struct sd_context *sd_context)
        break;
    }
    case 2: {
-        sd_printf("sd_init: Got CSD v3.0, but SDUC does not support SPI.\n");
+        printf("sd_init: Got CSD v3.0, but SDUC does not support SPI.\n");
        return false;
    }
    }
    sd_context->blocks = blocks;
    sd_context->blocksize = blocksize;
 #ifdef SD_DEBUG
-    sd_printf("CSD version %u.0, blocksize %u, blocks %u, capacity %u MiB, max speed %u\n", version, blocksize, blocks,
-              (uint32_t)(((uint64_t)blocksize * blocks) / (1024 * 1024)), max_speed);
+    printf("CSD version %u.0, blocksize %u, blocks %u, capacity %llu MiB, max speed %u\n", version, blocksize, blocks,
+           ((uint64_t)blocksize * blocks) / (1024 * 1024), max_speed);
 #endif
    return true;
 }
@@ -205,11 +205,11 @@ bool sd_init(struct sd_context *sd_context, int mosi, int miso, int sck, int ss,

    uint32_t ocr;
    if (!sd_read_ocr(&ocr)) {
-        sd_printf("sd_init: read OCR failed\n");
+        printf("sd_init: read OCR failed\n");
        goto out_spi;
    }
    if ((ocr & 0x00380000) != 0x00380000) {
-        sd_printf("sd_init: unsupported card voltage range\n");
+        printf("sd_init: unsupported card voltage range\n");
        goto out_spi;
    }

@@ -219,11 +219,11 @@ bool sd_init(struct sd_context *sd_context, int mosi, int miso, int sck, int ss,
    sd_spi_set_bitrate(rate);

    if (!sd_read_ocr(&ocr)) {
-        sd_printf("sd_init: read OCR failed\n");
+        printf("sd_init: read OCR failed\n");
        goto out_spi;
    }
    if (!(ocr & (1 << 31))) {
-        sd_printf("sd_init: card not powered up but !idle?\n");
+        printf("sd_init: card not powered up but !idle?\n");
        goto out_spi;
    }
    sd_context->sdhc_sdxc = (ocr & (1 << 30));
@@ -234,20 +234,20 @@ bool sd_init(struct sd_context *sd_context, int mosi, int miso, int sck, int ss,

    if (sd_context->blocksize != SD_SECTOR_SIZE) {
        if (sd_context->blocksize != 1024 && sd_context->blocksize != 2048) {
-            sd_printf("sd_init: Unsupported block size %u\n", sd_context->blocksize);
+            printf("sd_init: Unsupported block size %u\n", sd_context->blocksize);
            goto out_spi;
        }
        // Attempt SET_BLOCKLEN command
        uint8_t resp[1];
        if (!sd_cmd(16, SD_SECTOR_SIZE, 1, resp)) {
-            sd_printf("sd_init: SET_BLOCKLEN failed\n");
+            printf("sd_init: SET_BLOCKLEN failed\n");
            goto out_spi;
        }
        // Successfully set blocksize to SD_SECTOR_SIZE, adjust context
        sd_context->blocks *= sd_context->blocksize / SD_SECTOR_SIZE;
 #ifdef SD_DEBUG
-        sd_printf("Adjusted blocksize from %u to 512, card now has %u blocks\n", sd_context->blocksize,
-                  sd_context->blocks);
+        printf("Adjusted blocksize from %u to 512, card now has %u blocks\n", sd_context->blocksize,
+               sd_context->blocks);
 #endif
        sd_context->blocksize = SD_SECTOR_SIZE;
    }
@@ -307,7 +307,7 @@ bool sd_readblock_complete(struct sd_context *sd_context)

 bool sd_readblock_is_complete(struct sd_context *sd_context) { return sd_cmd_read_is_complete(); }

-bool sd_writeblock(struct sd_context *sd_context, const size_t sector_num, uint8_t buffer[const static SD_SECTOR_SIZE])
+bool sd_writeblock(struct sd_context *sd_context, size_t sector_num, uint8_t buffer[const static SD_SECTOR_SIZE])
 {
    if (!sd_context->initialized || sector_num >= sd_context->blocks)
        return false;
@@ -319,20 +319,3 @@ bool sd_writeblock(struct sd_context *sd_context, const size_t sector_num, uint8
    }
    return sd_cmd_write(24, addr, SD_SECTOR_SIZE, buffer);
 }
-
-bool sd_writeblocks(struct sd_context *sd_context, const size_t sector_num, const size_t sectors, uint8_t *const buffer)
-{
-    if (!sd_context->initialized || sector_num + sectors >= sd_context->blocks)
-        return false;
-
-    if (!sd_context->sdhc_sdxc) {
-        // Don't use multi-block writes for SDSC for now
-        // Need to configure WRITE_BL_LEN correctly
-        for (size_t sector = 0; sector < sectors; ++sector) {
-            if (!sd_writeblock(sd_context, sector_num + sector, buffer + sector * SD_SECTOR_SIZE))
-                return false;
-        }
-        return true;
-    }
-    return sd_cmd_write_multiple(25, sector_num, sectors, SD_SECTOR_SIZE, buffer);
-}
--- a/software/modules/rp2_sd/sd.h
+++ b/software/modules/rp2_sd/sd.h
@@ -24,4 +24,3 @@ bool sd_readblock_complete(struct sd_context *context);
 bool sd_readblock_is_complete(struct sd_context *context);

 bool sd_writeblock(struct sd_context *context, size_t sector_num, uint8_t buffer[const static SD_SECTOR_SIZE]);
-bool sd_writeblocks(struct sd_context *sd_context, const size_t sector_num, const size_t sectors, uint8_t *buffer);
--- a/software/modules/rp2_sd/sd_spi.c
+++ b/software/modules/rp2_sd/sd_spi.c
@@ -12,8 +12,6 @@
 #include <pico/time.h>
 #include <string.h>

-extern void sd_printf(const char *fmt, ...);
-
 typedef enum { DMA_READ_TOKEN, DMA_READ, DMA_IDLE } sd_dma_state;

 struct sd_dma_context {
@@ -224,7 +222,7 @@ bool sd_cmd_read_complete(void)
    sd_spi_read_blocking(0xff, &buf, 1);
    if (sd_spi_context.sd_dma_context.read_token_buf != 0xfe) {
 #ifdef SD_DEBUG
-        sd_printf("read failed: invalid read token %02x\n", sd_spi_context.sd_dma_context.read_token_buf);
+        printf("read failed: invalid read token %02hhx\n", sd_spi_context.sd_dma_context.read_token_buf);
 #endif
        return false;
    }
@@ -233,7 +231,7 @@ bool sd_cmd_read_complete(void)
    const uint16_t act_crc = sd_spi_context.sd_dma_context.crc_buf[0] << 8 | sd_spi_context.sd_dma_context.crc_buf[1];
    if (act_crc != expect_crc) {
 #ifdef SD_DEBUG
-        sd_printf("read CRC fail: got %04x, expected %04x\n", act_crc, expect_crc);
+        printf("read CRC fail: got %04hx, expected %04hx\n", act_crc, expect_crc);
 #endif
        return false;
    }
@@ -241,9 +239,10 @@ bool sd_cmd_read_complete(void)
    return true;
 }

-static bool sd_cmd_write_begin(uint8_t cmd, uint32_t arg)
+bool sd_cmd_write(uint8_t cmd, uint32_t arg, unsigned datalen, uint8_t data[const static datalen])
 {
-    uint8_t buf[1];
+    uint8_t buf[2];
+    const uint16_t crc = sd_crc16(datalen, data);
    sd_spi_cmd_send(cmd, arg);
    // Read up to 8 garbage bytes (0xff), followed by R1 (MSB is zero)
    bool got_r1 = false;
@@ -254,20 +253,9 @@ static bool sd_cmd_write_begin(uint8_t cmd, uint32_t arg)
            break;
        }
    }
-    if (!got_r1 || buf[0] != 0x00) {
-#ifdef SD_DEBUG
-        sd_printf("write cmd fail: %02x\n", buf[0]);
-#endif
-        return false;
-    }
-    return true;
-}
-
-static bool sd_cmd_write_block(uint8_t token, unsigned datalen, uint8_t data[const static datalen])
-{
-    uint8_t buf[2];
-    const uint16_t crc = sd_crc16(datalen, data);
-    buf[0] = token;
+    if (!got_r1 || buf[0] != 0x00)
+        goto abort;
+    buf[0] = 0xfe;
    sd_spi_write_blocking(buf, 1);
    sd_spi_write_blocking(data, datalen);
    buf[0] = crc >> 8;
@@ -276,16 +264,11 @@ static bool sd_cmd_write_block(uint8_t token, unsigned datalen, uint8_t data[con
    sd_spi_read_blocking(0xff, buf, 1);
    if ((buf[0] & 0x1f) != 0x5) {
 #ifdef SD_DEBUG
-        sd_printf("Write fail: %2x\n", buf[0]);
+        printf("Write fail: %2hhx\n", buf[0]);
 #endif
-        return false;
+        goto abort;
    }
-    return true;
-}

-static bool sd_cmd_write_wait_nbusy(void)
-{
-    uint8_t buf[1];
    int timeout = 0;
    bool got_done = false;
    for (timeout = 0; timeout < 131072; ++timeout) {
@@ -296,73 +279,18 @@ static bool sd_cmd_write_wait_nbusy(void)
        }
    }
 #ifdef SD_DEBUG
-    sd_printf("dbg write end: %d, %2x\n", timeout, buf[0]);
+    printf("dbg write end: %d, %2hhx\n", timeout, buf[0]);
 #endif
-    return got_done;
-}
-
-bool sd_cmd_write(uint8_t cmd, uint32_t arg, unsigned datalen, uint8_t data[const static datalen])
-{
-#ifdef SD_DEBUG
-    sd_printf("write 1 block at %u\n", arg);
-#endif
-    uint8_t buf[2];
-    if (!sd_cmd_write_begin(cmd, arg))
-        goto abort;
-    if (!sd_cmd_write_block(0xfe, datalen, data))
-        goto abort;
-    if (!sd_cmd_write_wait_nbusy())
+    if (!got_done)
        goto abort;

    gpio_put(sd_spi_context.ss, true);
    sd_spi_read_blocking(0xff, buf, 1);
-#ifdef SD_DEBUG
-    sd_printf("write ok\n");
-#endif
    return true;

 abort:
    gpio_put(sd_spi_context.ss, true);
    sd_spi_read_blocking(0xff, buf, 1);
-#ifdef SD_DEBUG
-    sd_printf("write fail\n");
-#endif
-    return false;
-}
-
-bool sd_cmd_write_multiple(uint8_t cmd, uint32_t arg, unsigned blocks, unsigned datalen, uint8_t *const data)
-{
-#ifdef SD_DEBUG
-    sd_printf("write %u blocks at %u\n", blocks, arg);
-#endif
-    uint8_t buf[2];
-    if (!sd_cmd_write_begin(cmd, arg))
-        goto abort;
-    for (unsigned i = 0; i < blocks; ++i) {
-        if (!sd_cmd_write_block(0b11111100, datalen, data + datalen * i))
-            goto abort;
-        if (!sd_cmd_write_wait_nbusy())
-            goto abort;
-    }
-    buf[0] = 0b11111101;
-    buf[1] = 0xff;
-    sd_spi_write_blocking(buf, 2);
-    if (!sd_cmd_write_wait_nbusy())
-        goto abort;
-
-    gpio_put(sd_spi_context.ss, true);
-    sd_spi_read_blocking(0xff, buf, 1);
-#ifdef SD_DEBUG
-    sd_printf("write ok\n");
-#endif
-    return true;
-
-abort:
-    gpio_put(sd_spi_context.ss, true);
-    sd_spi_read_blocking(0xff, buf, 1);
-#ifdef SD_DEBUG
-    sd_printf("write fail\n");
-#endif
    return false;
 }

--- a/software/modules/rp2_sd/sd_spi.h
+++ b/software/modules/rp2_sd/sd_spi.h
@@ -27,4 +27,3 @@ bool sd_cmd_read_complete(void);
 bool sd_cmd_read_is_complete(void);

 bool sd_cmd_write(uint8_t cmd, uint32_t arg, unsigned datalen, uint8_t data[const static datalen]);
-bool sd_cmd_write_multiple(uint8_t cmd, uint32_t arg, unsigned blocks, unsigned datalen, uint8_t *const data);
--- a/software/src/app.py
+++ b/software/src/app.py
@@ -9,8 +9,8 @@ from utils import TimerManager
 Dependencies = namedtuple('Dependencies', ('mp3player', 'nfcreader', 'buttons', 'playlistdb', 'hwconfig', 'leds',
                                           'config'))

-# Should be ~ 3dB steps
-VOLUME_CURVE = [1, 2, 3, 4, 6, 8, 11, 16, 23, 32, 45, 64, 91, 128, 181, 255]
+# Should be ~ 6dB steps
+VOLUME_CURVE = [1, 2, 4, 8, 16, 32, 63, 126, 251]


 class PlayerApp:
@@ -52,19 +52,11 @@ class PlayerApp:
        self.hwconfig = deps.hwconfig(self)
        self.leds = deps.leds(self)
        self.tag_mode = self.config.get_tagmode()
-        self.volume_max = self.config.get_volume_max()
-        self.volume_pos = 3  # fallback if config.get_volume_boot is nonsense
-        try:
-            for idx, val in enumerate(VOLUME_CURVE):
-                if val >= self.config.get_volume_boot():
-                    self.volume_pos = idx
-                    break
-        except (TypeError, ValueError):
-            pass
        self.playing_tag = None
        self.playlist = None
        self.buttons = deps.buttons(self) if deps.buttons is not None else None
        self.mp3file = None
+        self.volume_pos = 3
        self.paused = False
        self.playing = False
        self.player.set_volume(VOLUME_CURVE[self.volume_pos])
@@ -82,7 +74,7 @@ class PlayerApp:
        uid_str = b''.join('{:02x}'.format(x).encode() for x in new_tag)
        if self.tag_mode == 'tagremains' or (self.tag_mode == 'tagstartstop' and new_tag != self.playing_tag):
            self._set_playlist(uid_str)
-            self.playing_tag = new_tag if self.playlist is not None else None
+            self.playing_tag = new_tag
        elif self.tag_mode == 'tagstartstop':
            print('Tag presented again, stopping playback')
            self._unset_playlist()
@@ -99,10 +91,8 @@ class PlayerApp:
    def onButtonPressed(self, what):
        assert self.buttons is not None
        if what == self.buttons.VOLUP:
-            new_volume = min(self.volume_pos + 1, len(VOLUME_CURVE) - 1)
-            if VOLUME_CURVE[new_volume] <= self.volume_max:
-                self.volume_pos = new_volume
-                self.player.set_volume(VOLUME_CURVE[self.volume_pos])
+            self.volume_pos = min(self.volume_pos + 1, len(VOLUME_CURVE) - 1)
+            self.player.set_volume(VOLUME_CURVE[self.volume_pos])
        elif what == self.buttons.VOLDOWN:
            self.volume_pos = max(self.volume_pos - 1, 0)
            self.player.set_volume(VOLUME_CURVE[self.volume_pos])
@@ -206,5 +196,8 @@ class PlayerApp:
    def get_playlist_db(self):
        return self.playlist_db

+    def get_timer_manager(self):
+        return self.timer_manager
+
    def get_leds(self):
        return self.leds
--- a/software/src/main.py
+++ b/software/src/main.py
@@ -3,12 +3,13 @@

 import aiorepl  # type: ignore
 import asyncio
+from errno import ENOENT
 import machine
 import micropython
 import network
+import os
 import time
 import ubinascii
-import sys

 # Own modules
 import app
@@ -36,22 +37,14 @@ hwconfig.board_init()
 machine.mem32[0x40030000 + 0x00] = 0x10


-def setup_wifi(ssid='', passphrase='', security=network.WLAN.SEC_WPA_WPA2):
+def setup_wifi():
    network.hostname("TonberryPico")
-    if ssid is None or ssid == '':
-        apname = f"TonberryPicoAP_{machine.unique_id().hex()}"
-        print(f"Create AP {apname}")
-        wlan = network.WLAN(network.WLAN.IF_AP)
-        wlan.config(ssid=apname, password=passphrase if passphrase is not None else '', security=security)
-        wlan.active(True)
-    else:
-        print(f"Connect to SSID {ssid} with passphrase {passphrase}...")
-        wlan = network.WLAN()
-        wlan.active(True)
-        wlan.connect(ssid, passphrase if passphrase is not None else '', security=security)
+    wlan = network.WLAN(network.WLAN.IF_AP)
+    wlan.config(ssid=f"TonberryPicoAP_{machine.unique_id().hex()}", security=wlan.SEC_OPEN)
+    wlan.active(True)

-    # configure power management
-    wlan.config(pm=network.WLAN.PM_PERFORMANCE)
+    # disable power management
+    wlan.config(pm=network.WLAN.PM_NONE)

    mac = ubinascii.hexlify(network.WLAN().config('mac'), ':').decode()
    print(f"     mac: {mac}")
@@ -72,37 +65,27 @@ DB_PATH = '/sd/tonberry.db'

 config = Configuration()

-# Setup LEDs
-np = NeoPixel(hwconfig.LED_DIN, config.get_led_count(), sm=1)
-led_max = config.get_led_max()
-np.fill((led_max, led_max, 0))
-np.write()
-

 def run():
    asyncio.new_event_loop()
+    # Setup LEDs
+    np = NeoPixel(hwconfig.LED_DIN, config.get_led_count(), sm=1)

-    if machine.Pin(hwconfig.BUTTONS[1], machine.Pin.IN, machine.Pin.PULL_UP).value() == 0:
-        np.fill((0, 0, led_max))
-        np.write()
-        # Force default access point
-        setup_wifi('', '', network.WLAN.SEC_OPEN)
-    else:
-        secstring = config.get_wifi_security()
-        security = network.WLAN.SEC_WPA_WPA2
-        if secstring == 'open':
-            security = network.WLAN.SEC_OPEN
-        elif secstring == 'wpa_wpa2':
-            security = network.WLAN.SEC_WPA_WPA2
-        elif secstring == 'wpa3':
-            security = network.WLAN.SEC_WPA3
-        elif secstring == 'wpa2_wpa3':
-            security = network.WLAN.SEC_WPA2_WPA3
-        setup_wifi(config.get_wifi_ssid(), config.get_wifi_passphrase(), security)
+    # Wifi with default config
+    setup_wifi()

    # Setup MP3 player
    with SDContext(mosi=hwconfig.SD_DI, miso=hwconfig.SD_DO, sck=hwconfig.SD_SCK, ss=hwconfig.SD_CS,
                   baudrate=hwconfig.SD_CLOCKRATE):
+        # Temporary hack: build database from folders if no database exists
+        # Can be removed once playlists can be created via API
+        try:
+            _ = os.stat(DB_PATH)
+        except OSError as ex:
+            if ex.errno == ENOENT:
+                print("No playlist DB found, trying to build DB from tag dirs")
+                builddb()
+
        with BTreeFileManager(DB_PATH) as playlistdb, \
             AudioContext(hwconfig.I2S_DIN, hwconfig.I2S_DCLK, hwconfig.I2S_LRCLK) as audioctx:

@@ -116,7 +99,7 @@ def run():
                                    buttons=lambda the_app: Buttons(the_app, config, hwconfig),
                                    playlistdb=lambda _: playlistdb,
                                    hwconfig=lambda _: hwconfig,
-                                    leds=lambda _: LedManager(np, config),
+                                    leds=lambda _: LedManager(np),
                                    config=lambda _: config)
            the_app = app.PlayerApp(deps)

@@ -129,26 +112,25 @@ def run():
            asyncio.get_event_loop().run_forever()


-def error_blink():
-    while True:
-        if machine.Pin(hwconfig.BUTTONS[0], machine.Pin.IN, machine.Pin.PULL_UP).value() == 0:
-            machine.reset()
-        np.fill((led_max, 0, 0))
-        np.write()
-        time.sleep_ms(500)
-        np.fill((0, 0, 0))
-        np.write()
-        time.sleep_ms(500)
+def builddb():
+    """
+    For testing, build a playlist db based on the previous tag directory format.
+    Can be removed once uploading files / playlist via the web api is possible.
+    """
+    try:
+        os.unlink(DB_PATH)
+    except OSError:
+        pass
+    with BTreeFileManager(DB_PATH) as db:
+        for name, type_, _, _ in os.ilistdir(b'/sd'):
+            if type_ != 0x4000:
+                continue
+            fl = [b'/sd/' + name + b'/' + x for x in os.listdir(b'/sd/' + name) if x.endswith(b'.mp3')]
+            db.createPlaylistForTag(name, fl)
+    os.sync()


 if __name__ == '__main__':
    time.sleep(1)
    if machine.Pin(hwconfig.BUTTONS[0], machine.Pin.IN, machine.Pin.PULL_UP).value() != 0:
-        try:
-            run()
-        except Exception as ex:
-            sys.print_exception(ex)
-            error_blink()
-    else:
-        np.fill((led_max, 0, 0))
-        np.write()
+        run()
--- a/software/src/utils/init.py
+++ b/software/src/utils/init.py
@@ -2,7 +2,6 @@
 # Copyright (c) 2025 Matthias Blankertz <matthias@blankertz.org>

 from utils.helpers import safe_callback
-from utils.timer import TimerManager
 from utils.buttons import Buttons
 from utils.config import Configuration
 from utils.leds import LedManager
@@ -10,6 +9,7 @@ from utils.mbrpartition import MBRPartition
 from utils.pinindex import get_pin_index
 from utils.playlistdb import BTreeDB, BTreeFileManager
 from utils.sdcontext import SDContext
+from utils.timer import TimerManager

 __all__ = ["BTreeDB", "BTreeFileManager", "Buttons", "Configuration", "get_pin_index", "LedManager", "MBRPartition",
           "safe_callback", "SDContext", "TimerManager"]
--- a/software/src/utils/buttons.py
+++ b/software/src/utils/buttons.py
@@ -5,7 +5,7 @@ import asyncio
 import machine
 import micropython
 import time
-from utils import safe_callback, TimerManager
+from utils import safe_callback
 try:
    from typing import TYPE_CHECKING  # type: ignore
 except ImportError:
@@ -32,7 +32,6 @@ class Buttons:
    def __init__(self, cb: "ButtonCallback", config, hwconfig):
        self.button_map = config.get_button_map()
        self.hw_buttons = hwconfig.BUTTONS
-        self.hwconfig = hwconfig
        self.cb = cb
        self.buttons = dict()
        for key_id, key_name in self.KEYMAP.items():
@@ -43,7 +42,6 @@ class Buttons:
        self.int_flag = asyncio.ThreadSafeFlag()
        self.pressed: list[int] = []
        self.last: dict[int, int] = {}
-        self.timer_manager = TimerManager()
        for button in self.buttons.keys():
            button.irq(handler=self._interrupt, trigger=machine.Pin.IRQ_FALLING | machine.Pin.IRQ_RISING)
        asyncio.create_task(self.task())
@@ -71,10 +69,6 @@ class Buttons:
            # print(f'B{keycode} {now}')
            self.pressed.append(keycode)
            self.int_flag.set()
-            if keycode == self.VOLDOWN:
-                self.timer_manager.schedule(time.ticks_ms() + 5000, self.long_press_shutdown)
-        if button.value() == 1 and keycode == self.VOLDOWN:
-            self.timer_manager.cancel(self.long_press_shutdown)

    async def task(self):
        while True:
@@ -82,9 +76,3 @@ class Buttons:
            while len(self.pressed) > 0:
                what = self.pressed.pop()
                safe_callback(lambda: self.cb.onButtonPressed(what), "button callback")
-
-    def long_press_shutdown(self):
-        if self.hwconfig.get_on_battery():
-            self.hwconfig.power_off()
-        else:
-            machine.reset()
--- a/software/src/utils/config.py
+++ b/software/src/utils/config.py
@@ -22,15 +22,7 @@ class Configuration:
            'PREV': None,
            'NEXT': 1,
        },
-        'TAGMODE': 'tagremains',
-        'WIFI': {
-            'SSID': '',
-            'PASSPHRASE': '',
-            'SECURITY': 'wpa_wpa2',
-        },
-        'VOLUME_MAX': 255,
-        'VOLUME_BOOT': 16,
-        'LED_MAX': 255,
+        'TAGMODE': 'tagremains'
    }

    def __init__(self, config_path='/config.json'):
@@ -95,24 +87,6 @@ class Configuration:
    def get_tagmode(self) -> str:
        return self._get('TAGMODE')

-    def get_wifi_ssid(self) -> str:
-        return self._get('WIFI')['SSID']
-
-    def get_wifi_passphrase(self) -> str:
-        return self._get('WIFI')['PASSPHRASE']
-
-    def get_wifi_security(self) -> str:
-        return self._get('WIFI')['SECURITY']
-
-    def get_volume_max(self) -> int:
-        return self._get('VOLUME_MAX')
-
-    def get_led_max(self) -> int:
-        return self._get('LED_MAX')
-
-    def get_volume_boot(self) -> int:
-        return self._get('VOLUME_BOOT')
-
    # For the web API
    def get_config(self) -> Mapping[str, Any]:
        return self.config
@@ -130,9 +104,6 @@ class Configuration:
        self._validate(self.DEFAULT_CONFIG, config)
        if 'TAGMODE' in config and config['TAGMODE'] not in ['tagremains', 'tagstartstop']:
            raise ValueError("Invalid TAGMODE: Must be 'tagremains' or 'tagstartstop'")
-        if 'WLAN' in config and 'SECURITY' in config['WLAN'] and \
-           config['WLAN']['SECURITY'] not in ['open', 'wpa_wpa2', 'wpa3', 'wpa2_wpa3']:
-            raise ValueError("Invalid WLAN SECURITY: Must be 'open', 'wpa_wpa2', 'wpa3' or 'wpa2_wpa3'")
        self._merge_configs(self.config, config)
        self.config = config
        self._save()
--- a/software/src/utils/leds.py
+++ b/software/src/utils/leds.py
@@ -12,10 +12,10 @@ class LedManager:
    PLAYING = const(1)
    REBOOTING = const(2)

-    def __init__(self, np, config):
+    def __init__(self, np):
        self.led_state = LedManager.IDLE
-        self.brightness = config.get_led_max() / 255
        self.np = np
+        self.brightness = 0.1
        self.leds = len(self.np)
        asyncio.create_task(self.run())

--- a/software/src/utils/playlistdb.py
+++ b/software/src/utils/playlistdb.py
@@ -33,13 +33,12 @@ class BTreeDB(IPlaylistDB):
    PERSIST_OFFSET = b'offset'

    class Playlist(IPlaylist):
-        def __init__(self, parent: "BTreeDB", tag: bytes, pos: int, persist, shuffle, name):
+        def __init__(self, parent: "BTreeDB", tag: bytes, pos: int, persist, shuffle):
            self.parent = parent
            self.tag = tag
            self.pos = pos
            self.persist = persist
            self.shuffle = shuffle
-            self.name = name
            self.length = self.parent._getPlaylistLength(self.tag)
            self._shuffle()

@@ -169,10 +168,6 @@ class BTreeDB(IPlaylistDB):
        return (b''.join([tag, b'/playlist/']),
                b''.join([tag, b'/playlist0']))

-    @staticmethod
-    def _keyPlaylistName(tag):
-        return b''.join([tag, b'/playlistname'])
-
    def _flush(self):
        """
        Flush the database and call the flush_func if it was provided.
@@ -227,13 +222,12 @@ class BTreeDB(IPlaylistDB):
            raise RuntimeError("Malformed playlist key")
        return int(elements[2])+1

-    def _savePlaylist(self, tag, entries, persist, shuffle, name, flush=True):
+    def _savePlaylist(self, tag, entries, persist, shuffle, flush=True):
        self._deletePlaylist(tag, False)
        for idx, entry in enumerate(entries):
            self.db[self._keyPlaylistEntry(tag, idx)] = entry
        self.db[self._keyPlaylistPersist(tag)] = persist
        self.db[self._keyPlaylistShuffle(tag)] = shuffle
-        self.db[self._keyPlaylistName(tag)] = name.encode()
        if flush:
            self._flush()

@@ -246,7 +240,7 @@ class BTreeDB(IPlaylistDB):
                pass
        for k in (self._keyPlaylistPos(tag), self._keyPlaylistPosOffset(tag),
                  self._keyPlaylistPersist(tag), self._keyPlaylistShuffle(tag),
-                  self._keyPlaylistShuffleSeed(tag), self._keyPlaylistName(tag)):
+                  self._keyPlaylistShuffleSeed(tag)):
            try:
                del self.db[k]
            except KeyError:
@@ -254,18 +248,15 @@ class BTreeDB(IPlaylistDB):
        if flush:
            self._flush()

-    def getPlaylists(self):
+    def getPlaylistTags(self):
        """
-        Get a list of all defined playlists with their tag and names.
+        Get a keys-only dict of all defined playlists. Playlists currently do not have names, but are identified by
+        their tag.
        """
        playlist_tags = set()
        for item in self.db:
            playlist_tags.add(item.split(b'/')[0])
-        playlists = []
-        for tag in playlist_tags:
-            name = self.db.get(self._keyPlaylistName(tag), b'').decode()
-            playlists.append({'tag': tag, 'name': name})
-        return playlists
+        return playlist_tags

    def getPlaylistForTag(self, tag: bytes):
        """
@@ -284,19 +275,18 @@ class BTreeDB(IPlaylistDB):
            return None
        if self._keyPlaylistEntry(tag, pos) not in self.db:
            pos = 0
-        name = self.db.get(self._keyPlaylistName(tag), b'').decode()
        shuffle = self.db.get(self._keyPlaylistShuffle(tag), self.SHUFFLE_NO)
-        return self.Playlist(self, tag, pos, persist, shuffle, name)
+        return self.Playlist(self, tag, pos, persist, shuffle)

    def createPlaylistForTag(self, tag: bytes, entries: typing.Iterable[bytes], persist=PERSIST_TRACK,
-                             shuffle=SHUFFLE_NO, name: str = ''):
+                             shuffle=SHUFFLE_NO):
        """
        Create and save a playlist for 'tag' and return the Playlist object. If a playlist already existed for 'tag' it
        is overwritten.
        """
        assert persist in (self.PERSIST_NO, self.PERSIST_TRACK, self.PERSIST_OFFSET)
        assert shuffle in (self.SHUFFLE_NO, self.SHUFFLE_YES)
-        self._savePlaylist(tag, entries, persist, shuffle, name)
+        self._savePlaylist(tag, entries, persist, shuffle)
        return self.getPlaylistForTag(tag)

    def deletePlaylistForTag(self, tag: bytes):
@@ -380,14 +370,6 @@ class BTreeDB(IPlaylistDB):
                    _ = int(val)
                except ValueError:
                    fail(f' Bad playlistposoffset value for {last_tag}: {val!r}')
-            elif fields[1] == b'playlistname':
-                val = self.db[k]
-                try:
-                    name = val.decode()
-                    if dump:
-                        print(f'\tName: {name}')
-                except UnicodeError:
-                    fail(f' Bad playlistname for {last_tag}: Not valid unicode')
            else:
                fail(f'Unknown key {k!r}')
        return result
--- a/software/src/webserver.py
+++ b/software/src/webserver.py
@@ -4,15 +4,11 @@ Copyright (c) 2024-2025 Stefan Kratochwil <Kratochwil-LA@gmx.de>
 '''

 import asyncio
-import board
-import errno
 import hwconfig
 import json
 import machine
-import network
 import os
 import time
-import ubinascii

 from array import array
 from microdot import Microdot, redirect, send_file, Request
@@ -32,13 +28,13 @@ Request.max_content_length = 128 * 1024 * 1024  # 128MB requests allowed

 def start_webserver(config_, app_):
    global server, config, app, nfc, playlist_db, leds, timer_manager
-    server = asyncio.create_task(webapp.start_server(host='::0', port=80))
+    server = asyncio.create_task(webapp.start_server(port=80))
    config = config_
    app = app_
    nfc = app.get_nfc()
    playlist_db = app.get_playlist_db()
    leds = app.get_leds()
-    timer_manager = TimerManager()
+    timer_manager = app.get_timer_manager()


@webapp.before_request
@@ -113,7 +109,7 @@ async def static(request, path):

@webapp.route('/api/v1/playlists', methods=['GET'])
 async def playlists_get(request):
-    return playlist_db.getPlaylists()
+    return sorted(playlist_db.getPlaylistTags())


 def is_hex(s):
@@ -134,11 +130,10 @@ async def playlist_get(request, tag):
        return None, 404

    return {
-            'shuffle': playlist.shuffle,
-            'persist': playlist.persist,
+            'shuffle': playlist.__dict__.get('shuffle'),
+            'persist': playlist.__dict__.get('persist'),
            'paths': [(p[len(fsroot):] if p.startswith(fsroot) else p).decode()
                      for p in playlist.getPaths()],
-            'name': playlist.name
    }


@@ -158,8 +153,7 @@ async def playlist_put(request, tag):
    playlist_db.createPlaylistForTag(tag.encode(),
                                     (fsroot + path.encode() for path in playlist.get('paths', [])),
                                     playlist.get('persist', 'track').encode(),
-                                     playlist.get('shuffle', 'no').encode(),
-                                     playlist.get('name', ''))
+                                     playlist.get('shuffle', 'no').encode())
    return '', 204


@@ -203,25 +197,6 @@ async def audiofiles_get(request):
    return directory_iterator(), {'Content-Type': 'application/json; charset=UTF-8'}


-async def stream_to_file(stream, file_, length):
-    data = array('b', range(4096))
-    bytes_copied = 0
-    while True:
-        bytes_read = await stream.readinto(data)
-        if bytes_read == 0:
-            # End of body
-            break
-        bytes_written = file_.write(data[:bytes_read])
-        if bytes_written != bytes_read:
-            # short writes shouldn't happen
-            raise OSError(errno.EIO, 'unexpected short write')
-        bytes_copied += bytes_written
-        if bytes_copied == length:
-            break
-        app.reset_idle_timeout()
-    return bytes_copied
-
-
@webapp.route('/api/v1/audiofiles', methods=['POST'])
 async def audiofile_upload(request):
    if 'type' not in request.args or request.args['type'] not in ['file', 'directory']:
@@ -238,13 +213,20 @@ async def audiofile_upload(request):
        os.mkdir(path)
        return '', 204
    with open(path, 'wb') as newfile:
-        try:
-            if length > Request.max_body_length:
-                bytes_copied = await stream_to_file(request.stream, newfile, length)
-            else:
-                bytes_copied = newfile.write(request.body)
-        except OSError as ex:
-            return f'error writing data to file: {ex}', 500
+        data = array('b', range(4096))
+        bytes_copied = 0
+        while True:
+            bytes_read = await request.stream.readinto(data)
+            if bytes_read == 0:
+                # End of body
+                break
+            bytes_written = newfile.write(data[:bytes_read])
+            if bytes_written != bytes_read:
+                # short writes shouldn't happen
+                return 'write failure', 500
+            bytes_copied += bytes_written
+            if bytes_copied == length:
+                break
    if bytes_copied == length:
        return '', 204
    else:
@@ -276,21 +258,15 @@ async def audiofile_delete(request):

@webapp.route('/api/v1/reboot/<method>', methods=['POST'])
 async def reboot(request, method):
+    if hwconfig.get_on_battery():
+        return 'not allowed: no vbus', 403
+
    if method == 'bootloader':
-        if hwconfig.get_on_battery():
-            return 'not possible: connect USB first', 403
        leds.set_state(LedManager.REBOOTING)
        timer_manager.schedule(time.ticks_ms() + 1500, machine.bootloader)
-    elif method == 'application':
+    elif method =='application':
        leds.set_state(LedManager.REBOOTING)
        timer_manager.schedule(time.ticks_ms() + 1500, machine.reset)
    else:
        return 'method not supported', 400
    return '', 204
-
-
-@webapp.route('/api/v1/info', methods=['GET'])
-async def get_info(request):
-    mac = ubinascii.hexlify(network.WLAN().config('mac'), ':').decode()
-    return {'version': board.version,
-            'mac': mac}
--- a/software/tests/test_playerapp.py
+++ b/software/tests/test_playerapp.py
@@ -139,12 +139,6 @@ class FakeConfig:
    def get_tagmode(self):
        return 'tagremains'

-    def get_volume_max(self):
-        return 255
-
-    def get_volume_boot(self):
-        return 16
-

 def fake_open(filename, mode):
    return FakeFile(filename, mode)
@@ -173,7 +167,7 @@ def test_construct_app(micropythonify, faketimermanager):
    deps = _makedeps(mp3player=fake_mp3)
    dut = app.PlayerApp(deps)
    fake_mp3 = dut.player
-    assert fake_mp3.volume is not None and fake_mp3.volume >= 16
+    assert fake_mp3.volume is not None


 def test_load_playlist_on_tag(micropythonify, faketimermanager, monkeypatch):
--- a/software/tools/standalone-mp3/CMakeLists.txt
+++ b/software/tools/standalone-mp3/CMakeLists.txt
@@ -15,8 +15,6 @@ option(ENABLE_PLAY_TEST "Enable mp3 playback test" OFF)
 option(ENABLE_SD_READ_CRC "Enable crc check when reading from sd card" OFF)
 option(ENABLE_SD_DEBUG "Enable debug output for sd card driver" OFF)

-set(PICO_USE_FASTEST_SUPPORTED_CLOCK 1)
-
 # initialize the Raspberry Pi Pico SDK
 pico_sdk_init()

@@ -64,7 +62,7 @@ add_subdirectory(../../lib/helix_mp3 helix_mp3)

 target_link_libraries(standalone_mp3 PRIVATE pico_stdlib hardware_dma hardware_spi hardware_sync hardware_pio helix_mp3)
 target_include_directories(standalone_mp3 PRIVATE ${SD_LIB_DIR})
-target_compile_options(standalone_mp3 PRIVATE -Og)
+target_compile_options(standalone_mp3 PRIVATE -Og -DSD_DEBUG)


 pico_add_extra_outputs(standalone_mp3)
--- a/software/tools/standalone-mp3/main.c
+++ b/software/tools/standalone-mp3/main.c
@@ -2,7 +2,6 @@
 #include "sd.h"

 #include <math.h>
-#include <stdarg.h>
 #include <stdio.h>
 #include <string.h>

@@ -21,14 +20,6 @@ extern void sd_spi_dbg_clk(const int div, const int frac);

 extern void sd_spi_dbg_loop(void);

-void sd_printf(const char *fmt, ...)
-{
-    va_list ap;
-    va_start(ap, fmt);
-    vprintf(fmt, ap);
-    va_end(ap);
-}
-
 #define MAX_VOLUME 0x8000u

 void __time_critical_func(volume_adjust)(int16_t *restrict buf, size_t samples, uint16_t scalef)
@@ -166,7 +157,7 @@ static void write_test(struct sd_context *sd_context)
            data_buffer[i] ^= 0xff;
        }

-        if (!sd_writeblocks(sd_context, 0, sizeof(data_buffer) / SD_SECTOR_SIZE, data_buffer)) {
+        if (!sd_writeblock(sd_context, 0, data_buffer)) {
            printf("sd_writeblock failed\n");
            return;
        }