ESP32 Problem with enabling BT stack

[Lanrets]

Hello all,

I have problem with enabling BT_stack for ESP32.

When I try to call: bt_controller_init(); I get:

Error undefined reference to `bt_controller_init’

So I added to: sdkconfig.h

#define CONFIG_ESP32_ENABLE_STACK_BT 1
#define CONFIG_BT_ENABLED 1

Now I get :

Error undefined reference to `btdm_osi_funcs_register’
Error undefined reference to `btdm_controller_init’
Error undefined reference to `btdm_osi_funcs_register’
Error undefined reference to `btdm_controller_init’
Error ld returned 1 exit status  

 

What I am missing?

 

• This topic was modified 8 years ago by Lanrets.

[support]

Hi,

Sorry about that. Looks like our BSP is missing a reference to the library that provides those functions.

Please add the <SysGCC>\esp32\esp32-bsp\esp-idf\components\bt\lib\libbtdm_app.a file to your project manually and the Bluetooth functions should get linked properly.

[Lanrets]

Great! It worked 🙂 (I have edited BSP.xml and recreated project)

So now I am able to compile and load binary into ESP32. But I get “Double Exception” when I try to call function: “btdm_controller_init(void);”

Any idea why?

[support]

Hi,

Have you tried setting optimization to -Og like the tutorial suggests?

[Lanrets]

Hey,

Yes, I run debugger with software compiled using ‘-Og’ flag.

[support]

Hi,

Thanks, we have rechecked this. The ESP32 Bluetooth LE support requires some extra macros to be set in your project configuration file. Please replace your sdkconfig.h file with the following one:

/*
 *
 * Automatically generated file; DO NOT EDIT.
 * Espressif IoT Development Framework Configuration
 *
 */
#define CONFIG_TRACEMEM_RESERVE_DRAM 0x0
#define CONFIG_FREERTOS_CHECK_STACKOVERFLOW_NONE 1
#define CONFIG_MEMMAP_BT 1
#define CONFIG_SECURE_BOOTLOADER_DISABLED 1
#define CONFIG_ESPTOOLPY_FLASHFREQ "40m"
#define CONFIG_NEWLIB_STDOUT_ADDCR 1
#define CONFIG_TASK_WDT_CHECK_IDLE_TASK 1
#define CONFIG_ESPTOOLPY_FLASHSIZE "2MB"
#define CONFIG_INT_WDT 1
#define CONFIG_ESPTOOLPY_FLASHFREQ_40M 1
#define CONFIG_ESPTOOLPY_FLASHSIZE_2MB 1
#define CONFIG_FREERTOS_THREAD_LOCAL_STORAGE_POINTERS 1
#define CONFIG_LOG_DEFAULT_LEVEL_INFO 1
#define CONFIG_BT_RESERVE_DRAM 0x10000
#define CONFIG_ESP32_PANIC_PRINT_REBOOT 1
#define CONFIG_LWIP_MAX_SOCKETS 4
#define CONFIG_ESP32_ENABLE_STACK_BT 1
#define CONFIG_ULP_COPROC_RESERVE_MEM 0
#define CONFIG_ESPTOOLPY_BAUD 115200
#define CONFIG_INT_WDT_CHECK_CPU1 1
#define CONFIG_TOOLPREFIX "xtensa-esp32-elf-"
#define CONFIG_ESP32_RTC_CLOCK_SOURCE_INTERNAL_RC 1
#define CONFIG_ESPTOOLPY_BAUD_115200B 1
#define CONFIG_LWIP_THREAD_LOCAL_STORAGE_INDEX 0
#define CONFIG_MBEDTLS_SSL_MAX_CONTENT_LEN 16384
#define CONFIG_LOG_BOOTLOADER_LEVEL_WARN 1
#define CONFIG_TASK_WDT 1
#define CONFIG_MAIN_TASK_STACK_SIZE 4096
#define CONFIG_TASK_WDT_TIMEOUT_S 5
#define CONFIG_INT_WDT_TIMEOUT_MS 300
#define CONFIG_ESPTOOLPY_FLASHMODE "dio"
#define CONFIG_LOG_DEFAULT_LEVEL 3
#define CONFIG_FREERTOS_ASSERT_ON_UNTESTED_FUNCTION 1
#define CONFIG_ESPTOOLPY_FLASHMODE_DIO 1
#define CONFIG_PYTHON "python"
#define CONFIG_ESP32_TIME_SYSCALL_USE_RTC_FRC1 1
#define CONFIG_ESPTOOLPY_COMPRESSED 1
#define CONFIG_PARTITION_TABLE_FILENAME "partitions_singleapp.csv"
#define CONFIG_LWIP_DHCP_MAX_NTP_SERVERS 1
#define CONFIG_PARTITION_TABLE_SINGLE_APP 1
#define CONFIG_SYSTEM_EVENT_TASK_STACK_SIZE 2048
#define CONFIG_PARTITION_TABLE_CUSTOM_APP_BIN_OFFSET 0x10000
#define CONFIG_TASK_WDT_CHECK_IDLE_TASK_CPU1 1
#define CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ 240
#define CONFIG_FREERTOS_HZ 100
#define CONFIG_LOG_COLORS 1
#define CONFIG_FREERTOS_ASSERT_FAIL_ABORT 1
#define CONFIG_LOG_BOOTLOADER_LEVEL 2
#define CONFIG_ESPTOOLPY_BAUD_OTHER_VAL 115200
#define CONFIG_ESP32_DEFAULT_CPU_FREQ_240 1
#define CONFIG_ESP32_DEBUG_OCDAWARE 1
#define CONFIG_FREERTOS_BREAK_ON_SCHEDULER_START_JTAG 1
#define CONFIG_BT_ENABLED 1
#define CONFIG_FREERTOS_CORETIMER_0 1
#define CONFIG_PARTITION_TABLE_CUSTOM_FILENAME "partitions.csv"
#define CONFIG_FREERTOS_ISR_STACKSIZE 1536
#define CONFIG_OPTIMIZATION_LEVEL_DEBUG 1
#define CONFIG_SYSTEM_EVENT_QUEUE_SIZE 32
#define CONFIG_APP_OFFSET 0x10000
#define CONFIG_MEMMAP_SMP 1
#define CONFIG_ESPTOOLPY_PORT "/dev/ttyUSB0"

Then please use the following linker script to link your Bluetooth LE code:

MEMORY
{
  /* All these values assume the flash cache is on, and have the blocks this uses subtracted from the length
  of the various regions. The 'data access port' dram/drom regions map to the same iram/irom regions but
  are connected to the data port of the CPU and eg allow bytewise access. */
  /* IRAM for PRO cpu. Not sure if happy with this, this is MMU area... */
  iram0_0_seg (RX) : org = 0x40080000, len = 0x20000
  /* Even though the segment name is iram, it is actually mapped to flash */
  iram0_2_seg (RX) : org = 0x400D0018, len = 0x330000
  /* Shared data RAM, excluding memory reserved for ROM bss/data/stack.

     Enabling Bluetooth & Trace Memory features in menuconfig will decrease
     the amount of RAM available.
  */
  dram0_0_seg (RW) : org = 0x3FFB0000 + 0x10000,
                                     len = 0x50000 - 0x0 - 0x10000
  /* Flash mapped constant data */
  drom0_0_seg (R) : org = 0x3F400010, len = 0x800000
  /* RTC fast memory (executable). Persists over deep sleep.
   */
  rtc_iram_seg(RWX) : org = 0x400C0000, len = 0x2000
  /* RTC slow memory (data accessible). Persists over deep sleep.

     Start of RTC slow memory is reserved for ULP co-processor code + data, if enabled.
  */
  rtc_slow_seg(RW) : org = 0x50000000 + 0,
                                     len = 0x1000 - 0
}
/* Heap ends at top of dram0_0_seg */
_heap_end = 0x40000000 - 0x0;


INCLUDE esp32.common.ld
INCLUDE esp32.rom.ld
INCLUDE esp32.peripherals.ld

[Lanrets]

Great! It worked 🙂

Thanks…

[Author]

Posts