BLE Audio #183

mrhempman69 · 2023-11-07T14:32:22Z

I was directed here from the examples repo: sipeed/M0S_BL616_example#13

Can you please provide an example of how to set up the device to be used as a BLE Audio acceptor, from a phone connection? And the example can show both how to use I2S on the output, and how to use the DAC on the output too?

Where can i get more information on how to use BLE audio with this chip? I know it will involve using one of the LC3 codec libraries on Github

sakumisu · 2023-11-09T06:21:02Z

examples/audio/player_bt bt audio here.

mrhempman69 · 2023-11-10T14:53:06Z

Hello, I have successfully flashed M0S dock with https://github.com/bouffalolab/bouffalo_sdk/tree/master/examples/audio/player_bt

The problem is, that I cannot execute the A2DP start command, because there is no UART terminal available when plugged in over USB, nor when using the boards GND TX RX pins.

gamelaster · 2023-11-10T15:23:56Z

@mrhempman69 there are headers with GND RXD TXD on PCB of M0s Dock.

mrhempman69 · 2023-11-10T16:11:45Z

But which IOs for this example?

I already tried the holes labeled "T" and "R"

It says "uart0" in the main.c file, but "uart0" is also listed as many different pins in bl616 document

gamelaster · 2023-11-10T16:42:57Z

@mrhempman69 that pins labeled T, R and G are those you need.

mrhempman69 · 2023-11-10T17:19:36Z

Thanks. I do not know why it isn't working. The baud rate is supposed to be 2000000 right? And it's not supposed to show a UART interface when connected by USB-C, I tried with both silicon labs CP210x UART bridge (usb adapter), and LTD FT232 Serial Uart (usb adapter), on two separate M0S docks!

I have wired it correctly (T<-->R and R<-->T), tried powering from both USB-C and header-power, The "G" pin is the unlabeled pin near the USB C port, i'm assuming.

Here is the output from the flash log? Perhaps it will help:

[12:08:24.206] - Serial port is COM8
[12:08:24.206] - ==================================================
[12:08:24.226] - FW get address from partiton file C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\examples\audio\player_bt\./build/build_out\partition.bin
[12:08:24.227] - Address=0x10000
[12:08:24.229] - Program Start
[12:08:24.229] - ========= eflash loader cmd arguments =========
[12:08:24.240] - serial port is COM8
[12:08:24.240] - chiptype: bl616
[12:08:24.241] - cpu_reset=False
[12:08:24.518] - com speed: 2000000
[12:08:24.519] - ========= Interface is uart =========
[12:08:24.520] - Bootrom load
[12:08:24.523] - ========= get_boot_info =========
[12:08:24.524] - ========= image get bootinfo =========
[12:08:24.809] - tx rx and power off, press the machine!
[12:08:24.809] - cutoff time is 0.05
[12:08:24.872] - power on tx and rx
[12:08:25.862] - reset cnt: 0, reset hold: 0.05, shake hand delay: 0.1
[12:08:25.862] - clean buf
[12:08:25.870] - send sync
[12:08:26.095] - ack is b'4f4b'
[12:08:26.098] - shake hand success
[12:08:26.612] - data read is b'010016060000010027928001536336cf0eb417000f758010'
[12:08:26.613] - ========= ChipID: b40ecf366353 =========
[12:08:26.616] - Get bootinfo time cost(ms): 2091.80908203125
[12:08:26.618] - change bdrate: 2000000
[12:08:26.620] - Clock PLL set
[12:08:26.622] - Set clock time cost(ms): 1.00146484375
[12:08:26.751] - Read mac addr
[12:08:26.752] - MACADDR: b40ecf366353
[12:08:26.752] - flash set para
[12:08:26.754] - get flash pin cfg from bootinfo: 0x02
[12:08:26.757] - set flash cfg: 1014102
[12:08:26.759] - Set flash config
[12:08:26.761] - Set para time cost(ms): 1.12890625
[12:08:26.762] - ========= flash read jedec ID =========
[12:08:26.764] - Read flash jedec ID
[12:08:26.765] - readdata:
[12:08:26.766] - b'c8601600'
[12:08:26.767] - Finished
[12:08:26.772] - flash config Not found,use default
[12:08:26.773] - jedec_id:c86016
[12:08:26.774] - capacity_id:22
[12:08:26.776] - capacity:4.0M
[12:08:26.777] - get flash size: 0x00400000
[12:08:26.778] - Program operation
[12:08:26.781] - Dealing Index 0
[12:08:26.781] - ========= programming C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\examples\audio\player_bt\.\build\build_out\boot2_bl616_isp_release_v8.1.1.bin to 0x000000
[12:08:26.785] - flash para file: C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\tools\bflb_tools\bouffalo_flash_cube\chips/bl616/efuse_bootheader/flash_para.bin
[12:08:26.788] - Set flash config
[12:08:26.790] - Set para time cost(ms): 2.6806640625
[12:08:26.790] - ========= flash load =========
[12:08:26.793] - ========= flash erase =========
[12:08:26.794] - Erase flash  from 0x0 to 0xb76f
[12:08:27.028] - Erase time cost(ms): 233.175048828125
[12:08:27.074] - decompress flash load 23368
[12:08:27.101] - Load 2048/23368 {"progress":8}
[12:08:27.116] - Load 4096/23368 {"progress":17}
[12:08:27.133] - Load 6144/23368 {"progress":26}
[12:08:27.142] - Load 8192/23368 {"progress":35}
[12:08:27.158] - Load 10240/23368 {"progress":43}
[12:08:27.174] - Load 12288/23368 {"progress":52}
[12:08:27.191] - Load 14336/23368 {"progress":61}
[12:08:27.207] - Load 16384/23368 {"progress":70}
[12:08:27.223] - Load 18432/23368 {"progress":78}
[12:08:27.240] - Load 20480/23368 {"progress":87}
[12:08:27.250] - Load 22528/23368 {"progress":96}
[12:08:27.266] - Load 23368/23368 {"progress":100}
[12:08:27.267] - Load 23368/23368 {"progress":100}
[12:08:27.269] - Write check
[12:08:27.273] - Flash load time cost(ms): 242.020263671875
[12:08:27.273] - Finished
[12:08:27.276] - Sha caled by host: 1d1f24bc7adc9675a60b3ae92ef4280347781db0788c9dcf52498c476fcda615
[12:08:27.277] - xip mode Verify
[12:08:27.319] - Read Sha256/46960
[12:08:27.319] - Flash xip readsha time cost(ms): 39.420166015625
[12:08:27.322] - Finished
[12:08:27.325] - Sha caled by dev: 1d1f24bc7adc9675a60b3ae92ef4280347781db0788c9dcf52498c476fcda615
[12:08:27.325] - Verify success
[12:08:27.329] - Dealing Index 1
[12:08:27.330] - ========= programming C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\examples\audio\player_bt\.\build\build_out\partition.bin to 0xE000
[12:08:27.332] - flash para file: C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\tools\bflb_tools\bouffalo_flash_cube\chips/bl616/efuse_bootheader/flash_para.bin
[12:08:27.333] - Set flash config
[12:08:27.337] - Set para time cost(ms): 2.58935546875
[12:08:27.337] - ========= flash load =========
[12:08:27.339] - ========= flash erase =========
[12:08:27.340] - Erase flash  from 0xe000 to 0xe133
[12:08:27.379] - Erase time cost(ms): 37.906982421875
[12:08:27.383] - Load 308/308 {"progress":100}
[12:08:27.383] - Load 308/308 {"progress":100}
[12:08:27.384] - Write check
[12:08:27.388] - Flash load time cost(ms): 6.878173828125
[12:08:27.389] - Finished
[12:08:27.390] - Sha caled by host: 99c055a2a7279c04d989a2a270106d2e2584a2d5773b57e40b3af0d87f623d12
[12:08:27.391] - xip mode Verify
[12:08:27.395] - Read Sha256/308
[12:08:27.396] - Flash xip readsha time cost(ms): 1.993896484375
[12:08:27.398] - Finished
[12:08:27.399] - Sha caled by dev: 99c055a2a7279c04d989a2a270106d2e2584a2d5773b57e40b3af0d87f623d12
[12:08:27.400] - Verify success
[12:08:27.404] - Dealing Index 2
[12:08:27.405] - ========= programming C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\examples\audio\player_bt\.\build\build_out\player_bt_bl616.bin to 0x10000
[12:08:27.410] - flash para file: C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\tools\bflb_tools\bouffalo_flash_cube\chips/bl616/efuse_bootheader/flash_para.bin
[12:08:27.410] - Set flash config
[12:08:27.413] - Set para time cost(ms): 1.993896484375
[12:08:27.414] - ========= flash load =========
[12:08:27.418] - ========= flash erase =========
[12:08:27.418] - Erase flash  from 0x10000 to 0x17d50f
[12:08:30.478] - Erase time cost(ms): 3059.501220703125
[12:08:31.255] - decompress flash load 888608
[12:08:31.281] - Load 2048/888608 {"progress":0}
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[12:08:38.233] - Write check
[12:08:38.238] - Flash load time cost(ms): 7756.065185546875
[12:08:38.238] - Finished
[12:08:38.268] - Sha caled by host: 2084c0b16898a7de5804c60d3d0c5ced2b77e92b7dcd44c9ceace7fa73c57f88
[12:08:38.268] - xip mode Verify
[12:08:39.509] - Read Sha256/1496336
[12:08:39.509] - Flash xip readsha time cost(ms): 1237.662353515625
[12:08:39.514] - Finished
[12:08:39.516] - Sha caled by dev: 2084c0b16898a7de5804c60d3d0c5ced2b77e92b7dcd44c9ceace7fa73c57f88
[12:08:39.517] - Verify success
[12:08:39.522] - Program Finished
[12:08:39.523] - All time cost(ms): 15293.658203125
[12:08:39.658] - close interface
[12:08:39.658] - [All Success]

mrhempman69 · 2023-11-10T19:32:59Z

Is there a line that I can change in the code to automatically enable a2dp broadcast? Without needing uart.

Also the Bluetooth name if possible. So that i can flash it with those settings and not use UART

mrhempman69 · 2023-11-11T13:47:37Z

This is a problem specific to the player_bt example. Because, I can run helloworld example and get proper UART output.

I do get these warnings on build:

C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\examples\audio\player_bt\main.c:31:13: warning: implicit declaration of function 'bflb_device_get_by_name' [-Wimplicit-function-declaration]
   31 |     uart0 = bflb_device_get_by_name("uart0");
      |             ^~~~~~~~~~~~~~~~~~~~~~~
C:\Users\mrhem\bouffalo_sdk_setup\bouffalo_sdk\examples\audio\player_bt\main.c:31:11: warning: assignment to 'struct bflb_device_s *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
   31 |     uart0 = bflb_device_get_by_name("uart0");

mrhempman69 · 2023-11-11T14:00:54Z

So the helloworld example works. But the examples/audio/player_bt one does not. Even when I change its main.c to be more like helloworld, still no logging output.

I think it has to do with bflb_device_get_by_name function...

Please try examples/audio/player_bt and see if you get output or input over UART....

/*
 * Copyright (C) 2017-2022 Bouffalolab Group Holding Limited
 * Change Logs:
 *   Date        Author       Notes
 *   2019-03-25  MSP          the first version
 */

#include "shell.h"
#include <FreeRTOS.h>
#include "task.h"
#include "bflb_mtimer.h"
#include "bflb_core.h"
#include "board.h"
#define DBG_TAG "MAIN"
#include "log.h"

#define APP_MAIN_STACK_SIZE          (4*1024)
#define APP_MAIN_TASK_PRIORITY       (1)

static struct bflb_device_s *uart0;

extern void shell_init_with_task(struct bflb_device_s *shell);
extern void app_main_entry(void *arg);

int main(void)
{
    TaskHandle_t xHandle;
    board_init();

    // configASSERT((configMAX_PRIORITIES > 4));

    uart0 = bflb_device_get_by_name("uart0");
    shell_init_with_task(uart0);

    xTaskCreate(app_main_entry, (char *)"app_main", APP_MAIN_STACK_SIZE, NULL, APP_MAIN_TASK_PRIORITY, &xHandle);

    vTaskStartScheduler();

   // No output in this example, but works in helloworld:
    while (1) {
        LOG_F("player_bt hello world fatal\r\n");
        LOG_E("player_bt hello world error\r\n");
        LOG_W("player_bt hello world warning\r\n");
        LOG_I("player_bt hello world information\r\n");
        LOG_D("player_bt hello world debug\r\n");
        LOG_T("player_bt hello world trace\r\n");
        LOG_RF("player_bt hello world fatal raw\r\n");
        LOG_RE("player_bt hello world error raw\r\n");
        LOG_RW("player_bt hello world warning raw\r\n");
        LOG_RI("player_bt hello world information raw\r\n");
        LOG_RD("player_bt hello world debug raw\r\n");
        LOG_RT("player_bt hello world trace raw\r\n");
        bflb_mtimer_delay_ms(3000);
    }
}

sakumisu · 2023-11-12T09:12:52Z

M0s have no psram, stop using these demos( must enable psram), so there is no log because psram enables failed.

gamelaster · 2023-11-12T09:14:42Z

@mrhempman69 as @sakumisu says, those examples needs pSRAM, so they can work properly. I can recommend AI-Thinker M61 series boards: https://www.aliexpress.com/i/1005005407935386.html

mrhempman69 · 2023-11-12T13:21:17Z

Thanks... it has to be "p"SRAM? Would like this chip from Adafruit would work? https://www.digikey.com/en/products/filter/memory/memory/774?s=N4IgjCBcoKwOwAYqgMZQGYEMA2BnApgDQgD2UA2iAMwCcCAbAEwAsIAusQA4AuUIAytwBOASwB2AcxABfYmEY0I0EGkhY8RUhRALmCBSGK64MGIZ01mNRvXO6aMRuZgJEADlZHLNOLa8uYNzsHBk8LF3ozDhAePkFRSRliAFonZVVhAFdNMkhKKOlZEFtlEQATPmSwBAguXkgQcwBHbgBPPmrzNs58PkxcNEKgA

8 x 8MB memory
2.7-3.6 operating voltage
8-SOIC
SPI interface
133 MHz clock

It's $1.75 though, while SRAM chips have more options and are cheaper....

gamelaster · 2023-11-12T13:31:05Z

No, this will not work. You need the pSRAM integrated directly in the chip, afaik, BL616 doesn't expose controller on GPIOs for external pSRAM usage.

sakumisu · 2023-11-12T13:33:17Z

psram is chip built-in, you should use bl618

mrhempman69 · 2023-11-12T14:14:27Z

The Bl618 doesn’t come in small modules like this: (Not dock, just module) https://www.aliexpress.us/item/3256805074088612.html?_randl_currency=USD&src=google&src=google&albch=shopping&acnt=708-803-3821&slnk=&plac=&mtctp=&albbt=Google_7_shopping&albagn=888888&isSmbAutoCall=false&needSmbHouyi=false&albcp=20268592310&albag=&trgt=&crea=en3256805074088612&netw=x&device=m&albpg=&albpd=en3256805074088612&gbraid=0AAAAAD6I-hFFEFLRuckLvKdIvdb82cY6A&gclid=Cj0KCQiAjMKqBhCgARIsAPDgWlxiNlrkhrMFzi3KhlxweuxT_1HmwylXg_2fn7QtvjHduc8pWik32jYaAguUEALw_wcB&gclsrc=aw.ds&aff_fcid=2259b38bd9cf487092381962c687a7f0-1699798326242-09110-UneMJZVf&aff_fsk=UneMJZVf&aff_platform=aaf&sk=UneMJZVf&aff_trace_key=2259b38bd9cf487092381962c687a7f0-1699798326242-09110-UneMJZVf&terminal_id=e667f575eb6d4a36b049600e6e592c43&afSmartRedirect=y&gatewayAdapt=glo2usa&_randl_shipto=US

Where do I buy the bl618 chip only with that style of board-on-board connector? (DIY in-home surface-mountable breakout, not QFN, not DIP, size in between)

Why does the README for the player_bt example specifically mention BL616 so many times if it doesn’t work for BL616?

It’s totally unsupported to get BLE audio to work for the more common BL616?

(The PSRAM module I linked to supports SPI…)

madushan1000 · 2023-11-13T09:21:12Z

There is a bl618 module from Ai-Thinker(AI-M61-32S). Also some shops on aliexpress sells bl618 chips too. just search for "bl618"

gamelaster · 2023-11-13T14:13:41Z

As @madushan1000 says, there are modules from Ai-Thinker. And as I mentioned, mounting custom pSRAM to BL616 is not possible. Use BL618 instead.

mrhempman69 · 2023-11-13T14:27:17Z

Thank you, madushan1000, gamelaster !!! And sakumisu!!

mrhempman69 · 2023-11-24T20:02:15Z

Okay??? I bought the AI-Thinker-M61 board that was suggested. I get this error when connecting to UART after flash of the player_bt example. (Has anyone actually tried the player_bt example??)

[15:00:22.162] - Open COM4 Success
[15:00:23.486] -   ____               __  __      _       _       _
[15:00:23.494] -  |  _ \             / _|/ _|    | |     | |     | |
[15:00:23.501] -  | |_) | ___  _   _| |_| |_ __ _| | ___ | | __ _| |__
[15:00:23.505] -  |  _ < / _ \| | | |  _|  _/ _` | |/ _ \| |/ _` | '_ \
[15:00:23.509] -  | |_) | (_) | |_| | | | || (_| | | (_) | | (_| | |_) |
[15:00:23.513] -  |____/ \___/ \__,_|_| |_| \__,_|_|\___/|_|\__,_|_.__/
[15:00:23.515] - Build:11:39:57,Nov 10 2023
[15:00:23.518] - Copyright (c) 2022 Bouffalolab team
[15:00:23.519] - ======== flash cfg ========
[15:00:23.522] - flash size 0x00800000
[15:00:23.523] - jedec id     0x5E4017
[15:00:23.525] - mid              0x5E
[15:00:23.526] - iomode           0x04
[15:00:23.529] - clk delay        0x01
[15:00:23.530] - clk invert       0x01
[15:00:23.532] - read reg cmd0    0x05
[15:00:23.533] - read reg cmd1    0x35
[15:00:23.535] - write reg cmd0   0x01
[15:00:23.535] - write reg cmd1   0x31
[15:00:23.536] - qe write len     0x01
[15:00:23.538] - cread support    0x01
[15:00:23.539] - cread code       0x20
[15:00:23.541] - burst wrap cmd   0x77
[15:00:23.542] - ===========================
[15:00:23.547] - dynamic memory init success, ocram heap size = 234 Kbyte, psram heap size = 4096 Kbyte
[15:00:23.547] - sig1:ffffffff
[15:00:23.549] - sig2:0000f32f
[15:00:23.550] - cgen1:9ffffffd
[15:00:23.552] - �[0mbouffalolab />�[0mexception_entry
[15:00:23.553] - mcause=38000005
[15:00:23.553] - mepc:a00d9846
[15:00:23.555] - mtval:00000001
[15:00:23.556] - Load access fault

I am using BL618 now, still the repo is broken. Still the repo readme suggests using BL616, why don't you update it? This conversation was two weeks ago, still nobody has updated the documentation.

mrhempman69 · 2023-11-28T15:32:21Z

@sakumisu @sakumisue

sakumisu · 2023-11-29T03:28:03Z

These demos can work both bl616 or bl618, just modify some config, but i should say these demos are for customer with special board. From mine, it work. You can ask ai-thinker for supporting these, thanks.

mrhempman69 · 2023-11-29T16:01:02Z

I wish you had said that earlier. I have BL616 breakout for weeks now. I suggested using external PSRAM and you said "psram is chip built-in". So how can Bl616 work in your development kit, but I am unable to add external components to make bl616 work?

I have made a Bl618 breakout board too now. So I can re-create "special board" but what I should do to make it like the "special board"? What is the special board? Where is its schematic?

And also where are the config settings are that I need to change, and for what reasons?

gamelaster · 2023-11-29T16:16:02Z

This is correct command. @sakumisu uses probably the official devkit. Best would be to attach JTAG and check out why it crashes.

mrhempman69 · 2023-11-30T20:26:55Z

@gamelaster Can you please recommend me the CKLink Debugger or the jtag tool that you're using to debug these kinds of boards? The CKLink Debugger described by bouffalo labs does not appear to be an available product.

Edit: I think I did this once before, with an Rpi-like thing, and I can use OpenOCD right

gamelaster · 2023-12-01T15:55:13Z

Sipeed BL616 board is supposed to be CK-Link debugger 😁

mrhempman69 · 2023-12-01T16:22:24Z

You mean this M0S dock? How do you flash and wire that as a debugger?

Edit: I choose to move the convo for debugging here: sipeed/M0S_BL616_example#12

O2C14 · 2024-02-25T03:40:38Z

Okay??? I bought the AI-Thinker-M61 board that was suggested. I get this error when connecting to UART after flash of the player_bt example. (Has anyone actually tried the player_bt example??)

[15:00:22.162] - Open COM4 Success
[15:00:23.486] -   ____               __  __      _       _       _
[15:00:23.494] -  |  _ \             / _|/ _|    | |     | |     | |
[15:00:23.501] -  | |_) | ___  _   _| |_| |_ __ _| | ___ | | __ _| |__
[15:00:23.505] -  |  _ < / _ \| | | |  _|  _/ _` | |/ _ \| |/ _` | '_ \
[15:00:23.509] -  | |_) | (_) | |_| | | | || (_| | | (_) | | (_| | |_) |
[15:00:23.513] -  |____/ \___/ \__,_|_| |_| \__,_|_|\___/|_|\__,_|_.__/
[15:00:23.515] - Build:11:39:57,Nov 10 2023
[15:00:23.518] - Copyright (c) 2022 Bouffalolab team
[15:00:23.519] - ======== flash cfg ========
[15:00:23.522] - flash size 0x00800000
[15:00:23.523] - jedec id     0x5E4017
[15:00:23.525] - mid              0x5E
[15:00:23.526] - iomode           0x04
[15:00:23.529] - clk delay        0x01
[15:00:23.530] - clk invert       0x01
[15:00:23.532] - read reg cmd0    0x05
[15:00:23.533] - read reg cmd1    0x35
[15:00:23.535] - write reg cmd0   0x01
[15:00:23.535] - write reg cmd1   0x31
[15:00:23.536] - qe write len     0x01
[15:00:23.538] - cread support    0x01
[15:00:23.539] - cread code       0x20
[15:00:23.541] - burst wrap cmd   0x77
[15:00:23.542] - ===========================
[15:00:23.547] - dynamic memory init success, ocram heap size = 234 Kbyte, psram heap size = 4096 Kbyte
[15:00:23.547] - sig1:ffffffff
[15:00:23.549] - sig2:0000f32f
[15:00:23.550] - cgen1:9ffffffd
[15:00:23.552] - �[0mbouffalolab />�[0mexception_entry
[15:00:23.553] - mcause=38000005
[15:00:23.553] - mepc:a00d9846
[15:00:23.555] - mtval:00000001
[15:00:23.556] - Load access fault

I am using BL618 now, still the repo is broken. Still the repo readme suggests using BL616, why don't you update it? This conversation was two weeks ago, still nobody has updated the documentation.

The occurrence of this phenomenon is due to compiling in the Windows environment. Please try compiling in the Linux environment

mrhempman69 closed this as completed Nov 9, 2023

mrhempman69 reopened this Nov 10, 2023

mrhempman69 closed this as completed Nov 13, 2023

mrhempman69 reopened this Nov 24, 2023

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BLE Audio #183

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