Differences

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--- projects:diy_active_speaker [2025/11/24 07:42] – [the verdict: use QCC / CSR BT only modules] admin
+++ projects:diy_active_speaker [2025/11/24 16:13] (current) – [mute voice prompts] admin
@@ Line 6: / Line 6: @@
 FYI: If you have an old amp with 30-pin iPod Dock, see [[projects:ipod-simu]] \\
-===== Requirements =====
+===== Hardware modules =====
    * passive speaker
@@ Line 12: / Line 12: @@
    * power supply unit
    * optional: DC-DC decoupler / filter (to eliminate noise of PSU) / LC-filter
-   * receiver/player (here: BT201 KT1025A)
+   * receiver/player (here Bluetooth via BT201 KT1025A or CSR/QCC chipset)
-   * optional: MCU
+   * optional: MCU (used for BT201)
@@ Line 46: / Line 46: @@
-===== the verdict: use QCC / CSR BT only modules =====
+===== QCC / CSR BT only modules =====
+Many audio Bluetooth player modules use CSR/Qualcomm chipsets. CSR has been acquired by Qualcomm in 2015. \\
+CSR chips → require CSR USB-SPI programmers, uses BlueSuite toolchain. \\
+QCC chips → prefer USB DFU, only use QCC USB-SPI when needed \\
+^ Feature ^ CSR (Legacy CSR86xx Series) ^ QCC (Modern QCC30xx / QCC51xx Series) ^
+| Programming Interface | CSR USB-SPI (proprietary CSR protocol) | USB-DFU (if exposed), or QCC USB-SPI (different protocol from CSR) |
+| Official tools | BlueSuite (PSTool, BlueFlash, Audio Prompt Manager, ROM Config Tool) | QCC Tool, QCC Audio Tuning Tool, Qualcomm ADK tools (QACT, ConfigStore editors, VP Tool) |
+| Config system | PSKEYS | ConfigStore (new architecture) |
+| Firmware format | .xuv, .xpv, AMT/BlueSuite prompt packs | .dfu, partition images, QCC voice-prompt packs |
+| Voice prompt storage | Separate AMT VP pack or embedded table referenced via PSKEYS | Partitioned VP image or ConfigStore mapping entries |
+| VP disabling method | Edit PSKEY_AUDIO_PROMPT_ENABLE or remove mapping | Disable “Voice Prompts” in ConfigStore or remove VP partition |
+| USB programming | NO (CSR USB is not for flashing) | YES on many modules (USB DFU mode) |
+| SPI programmer needed | Yes, almost always | Only if the module does not expose USB DFU |
+| Alternative open-source tools | csr-spi-ftdi, CsrSpiDrivers | csr-spi-ftdi sometimes works only for CSR chips (not for QCC) |
+| Interchangeable toolchains? | No | No |
-If you want APT-X, you might go for Qualcomms chipsets (formerly CSR)
 [[https://www.diyaudio.com/community/threads/qcc5125-and-qcc3034-qcc3031-programming.374322/]] \\
@@ Line 54: / Line 70: @@
-   * USB programming first (easiest) (if available)
+alternative flashers: \\
-   * USB-SPI / SPI-ISP
+[[https://github.com/lorf/csr-spi-ftdi]] \\
-   * official QCC development/evaluation kit (Qualcomm ADK / QCC dev kit)
+[[https://github.com/Frans-Willem/CsrSpiDrivers]] \\
+[[https://www.diyaudio.com/community/threads/csr8675-programming-guide-w-software-and-tons-of-csr-info.349336/]] \\
+[[https://www.tinysineaudio.com/blogs/news/how-to-change-the-qcc30xx-series-bluetooth-eq-settings]] \\
+==== mute voice prompts ====
+⚠ QCC does not use CSR BlueSuite anymore. All Qualcomm voice-prompt handling uses QCC/ADK tools. Access via USB DFU or QCC USB-SPI.\\
+There is a [[https://www.youtube.com/watch?v=lVrJdW9ekro|tutorial on YT for QCC3008]] ADK Configuration Tool. \\
+Option A for QCC) Disable prompts in ConfigStore (recommended)
+   * Tools: QCC Audio Tuning Tool; QCC Tool / ConfigStore editor
+   * Open ConfigStore (inside QCC Tool or QACT).
+   * Disable VoicePromptsEnabled / VP_Enable
+   * Optional: disable earcons (EarconEnable).
+   * Save to flash → reboot. Result: No more spoken prompts.
+Option A for CSR) Disable voice prompts using PSKEYs (recommended)
+   * Tools: BlueSuite → PSTool
+   * Edit or add the PSKEY:
+      * PSKEY_AUDIO_PROMPT_ENABLE = 0
+      * Some firmwares also have:
+      * PSKEY_EVENTS_AUDIO_PROMPTS
+      * PSKEY_USR0 flags controlling individual events
+   * Write changes → reboot
+Option B) Replace VP files/partition with silent audio
+   * Tools for CSR: BlueSuite → Audio Prompt Manager
+   * Tools for QCC: Voice Prompt Tool (QCC/ADK); ImagePack Manager
+   * Extract the VP pack (usually .vp, .xuv, or .bin) or partition.
+   * For QCC: Import into the Voice Prompt Tool (in Qualcomm ADK).
+   * Replace each file with a 0.1s silent WAV (16 kHz, mono PCM).
+   * Reflash the VP pack/partition.
+   * Result: Events still fire, but silence is played.
+Option C) Remove mapping table entries
+   * Tools for CSR: BlueSuite → ROM Config Tool / AMT
+   * Tools for QCC: ConfigStore
+   * Delete / clear the event→prompt mapping entries.
+Option D) Flash minimal firmware without voice prompt partition
+   * Requires: Full CSR ADK / Qualcomm ADK; probably requires vendor keys
-use QCC_Audio_Tool / QCC_Tool / ADK utilities to read/write config files and flash .xuv/.htf firmware images.
 ===== power supply =====