[esp32c6] [ble_hid_device_demo] power consumption on light_sleep

[leevisual]

Hello
I want to know that it is possible to use to call light sleep during retaining bluetooth connection in the ble_hid_device_demo project

esp_pm_config_t pm = {
.max_freq_mhz = 80,
.min_freq_mhz = 40,
.light_sleep_enable = true, // Is it possible to use
};
ESP_ERROR_CHECK(esp_pm_configure(&pm));


< Previous condition >
1> paired with smartphone and connected.

Please know esp_pm_configure() usage including ble_hid_device_demo project. I don't find esp_pm_configure() example in the bludroid examples

Thank you for your answer.

[nopnop2002]

LightSleep stops the clock supply to the following functions.
Digital peripherals
RAM
CPU

The clock supply to wireless devices such as Wi-Fi and Bluetooth continues.

Example is here.
https://github.com/espressif/esp-idf/tr ... ight_sleep

[leevisual]

Dear Espressif Support Team,

I have resolved the previous issue.
However, while testing the power saving feature with Wi-Fi in station mode connected to an AP, I encountered a new problem.

After about 30 seconds, the BLE connection is disconnected.
When the BLE reconnects, the current consumption increases significantly, from about 15 mA to 50 mA.

Could you please advise how to fix this issue or provide any recommended configuration to maintain stable BLE connection during Wi-Fi power saving?

Additionally, I would like to know how to keep the BLE connection stable and prevent it from disconnecting while Wi-Fi power saving is enabled.

Thank you for your support.

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Debug log
Build:Sep 19 2022
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:2
load:0x40875720,len:0x16b8
load:0x4086c110,len:0xe84
load:0x4086e610,len:0x3054
entry 0x4086c11a
I (23) boot: ESP-IDF v5.4.1 2nd stage bootloader
I (24) boot: compile time Nov 12 2025 10:19:38
I (24) boot: chip revision: v0.0
I (24) boot: efuse block revision: v0.1
I (27) boot.esp32c6: SPI Speed : 80MHz
I (31) boot.esp32c6: SPI Mode : DIO
I (35) boot.esp32c6: SPI Flash Size : 8MB
I (38) boot: Enabling RNG early entropy source...
I (43) boot: Partition Table:
I (46) boot: ## Label Usage Type ST Offset Length
I (52) boot: 0 esp_secure_cert unknown 3f 06 0000d000 00002000
I (58) boot: 1 nvs WiFi data 01 02 00010000 0000c000
I (65) boot: 2 nvs_keys NVS keys 01 04 0001c000 00001000
I (71) boot: 3 otadata OTA data 01 00 0001d000 00002000
I (78) boot: 4 phy_init RF data 01 01 0001f000 00001000
I (84) boot: 5 ota_0 OTA app 00 10 00020000 00340000
I (91) boot: 6 paa_cert Unknown data 01 82 00360000 00020000
I (97) boot: 7 storage Unknown data 01 82 00380000 00080000
I (104) boot: 8 ota_1 OTA app 00 11 00400000 00340000
I (111) boot: End of partition table
I (114) boot: No factory image, trying OTA 0
I (118) esp_image: segment 0: paddr=00020020 vaddr=42120020 size=31d08h (204040) map
I (163) esp_image: segment 1: paddr=00051d30 vaddr=40800000 size=0e2e8h ( 58088) load
I (176) esp_image: segment 2: paddr=00060020 vaddr=42000020 size=1188dch (1149148) map
I (388) esp_image: segment 3: paddr=00178904 vaddr=4080e2e8 size=13e30h ( 81456) load
I (406) esp_image: segment 4: paddr=0018c73c vaddr=40822120 size=041dch ( 16860) load
I (411) esp_image: segment 5: paddr=00190920 vaddr=50000000 size=00070h ( 112) load
I (419) boot: Loaded app from partition at offset 0x20000
I (449) boot: Set actual ota_seq=1 in otadata[0]
I (450) boot: Disabling RNG early entropy source...
I (459) cpu_start: Unicore app
I (468) cpu_start: Pro cpu start user code
I (468) cpu_start: cpu freq: 160000000 Hz
I (468) app_init: Application information:
I (468) app_init: Project name: hidd_demos
I (472) app_init: App version: 3e8562f-dirty
I (476) app_init: Compile time: Nov 12 2025 15:47:58
I (481) app_init: ELF file SHA256: d17d43f68...
I (486) app_init: ESP-IDF: v5.4.1
I (490) efuse_init: Min chip rev: v0.0
I (493) efuse_init: Max chip rev: v0.99
I (497) efuse_init: Chip rev: v0.0
I (501) heap_init: Initializing. RAM available for dynamic allocation:
I (507) heap_init: At 4082EF40 len 0004D6D0 (309 KiB): RAM
I (513) heap_init: At 4087C610 len 00002F54 (11 KiB): RAM
I (518) heap_init: At 50000070 len 00003F78 (15 KiB): RTCRAM
I (524) spi_flash: detected chip: generic
I (527) spi_flash: flash io: dio
I (530) sleep_gpio: Configure to isolate all GPIO pins in sleep state
I (536) sleep_gpio: Enable automatic switching of GPIO sleep configuration
I (554) coexist: coex firmware version: e727207
I (573) coexist: coexist rom version 5b8dcfa
I (574) main_task: Started on CPU0
I (574) main_task: Calling app_main()
I (584) pm: Frequency switching config: CPU_MAX: 80, APB_MAX: 80, APB_MIN: 20, Light sleep: ENABLED
I (584) pp: pp rom version: 5b8dcfa
I (584) net80211: net80211 rom version: 5b8dcfa
I (594) wifi:wifi driver task: 40838624, prio:23, stack:6656, core=0
I (604) wifi:wifi firmware version: 79fa3f41ba
I (604) wifi:wifi certification version: v7.0
I (604) wifi:config NVS flash: enabled
I (604) wifi:config nano formatting: disabled
I (614) wifi:mac_version:HAL_MAC_ESP32AX_761,ut_version:N, band mode:0x1
I (614) wifi:Init data frame dynamic rx buffer num: 32
I (624) wifi:Init static rx mgmt buffer num: 5
I (624) wifi:Init management short buffer num: 32
I (634) wifi:Init dynamic tx buffer num: 32
I (634) wifi:Init static tx FG buffer num: 2
I (634) wifi:Init static rx buffer size: 1700 (rxctrl:92, csi:512)
I (644) wifi:Init static rx buffer num: 10
I (644) wifi:Init dynamic rx buffer num: 32
I (654) sleep_clock: Modem Power, Clock and Reset sleep retention initialization
I (664) wifi_init: rx ba win: 6
I (664) wifi_init: accept mbox: 6
I (664) wifi_init: tcpip mbox: 32
I (664) wifi_init: udp mbox: 6
I (674) wifi_init: tcp mbox: 6
I (674) wifi_init: tcp tx win: 5760
I (674) wifi_init: tcp rx win: 5760
I (684) wifi_init: tcp mss: 1440
I (684) wifi_init: WiFi IRAM OP enabled
I (684) wifi_init: WiFi RX IRAM OP enabled
I (694) wifi_init: WiFi SLP IRAM OP enabled
I (694) HID_DEMO: Connecting AP: XXXX with password: 0123456789
W (704) wifi:Password length matches WPA2 standards, authmode threshold changes from OPEN to WPA2
I (704) phy_init: phy_version 330,4af1121,Feb 6 2025,14:39:13
W (764) wifi:ACK_TAB0 :0x 90a0b, QAM16:0x9 (24Mbps), QPSK:0xa (12Mbps), BPSK:0xb (6Mbps)
W (764) wifi:CTS_TAB0 :0x 90a0b, QAM16:0x9 (24Mbps), QPSK:0xa (12Mbps), BPSK:0xb (6Mbps)
W (774) wifi:(agc)0x600a7128:0xd2166800, min.avgNF:0xce->0xd2(dB), RCalCount:0x166, min.RRssi:0x800(-128.00)
W (784) wifi:(TB)WDEV_PWR_TB_MCS0:19
W (784) wifi:(TB)WDEV_PWR_TB_MCS1:19
W (784) wifi:(TB)WDEV_PWR_TB_MCS2:19
W (784) wifi:(TB)WDEV_PWR_TB_MCS3:19
W (794) wifi:(TB)WDEV_PWR_TB_MCS4:19
W (794) wifi:(TB)WDEV_PWR_TB_MCS5:19
W (794) wifi:(TB)WDEV_PWR_TB_MCS6:18
W (804) wifi:(TB)WDEV_PWR_TB_MCS7:18
W (804) wifi:(TB)WDEV_PWR_TB_MCS8:17
W (804) wifi:(TB)WDEV_PWR_TB_MCS9:15
W (814) wifi:(TB)WDEV_PWR_TB_MCS10:15
W (814) wifi:(TB)WDEV_PWR_TB_MCS11:15
I (814) wifi:11ax coex: WDEVAX_PTI0(0x55777555), WDEVAX_PTI1(0x00003377).

I (824) wifi:mode : sta (40:4c:ca:43:b1:d0)
I (824) wifi:enable tsf
I (834) BLE_INIT: Using main XTAL as clock source
I (834) BLE_INIT: ble controller commit:[c0eafd3]
I (844) wifi<1,0>, old:<1,0>, ap:<255,255>, sta:<1,0>, prof:1, snd_ch_cfg:0x0
I (844) wifi:(connect)dot11_authmode:0x3, pairwise_cipher:0x3, group_cipher:0x3
I (854) wifi:state: init -> auth (0xb0)
I (864) wifi:state: auth -> assoc (0x0)
W (864) BLE_INIT: BLE modem sleep is enabled
I (864) BLE_INIT: Modem BLE MAC retention initialization
W (874) BLE_INIT: Enable light sleep, the wake up source is BLE timer
I (874) wifi:(assoc)RESP, Extended Capabilities length:8, operating_mode_notification:0
I (884) wifi:(assoc)RESP, Extended Capabilities, MBSSID:0, TWT Responder:0, OBSS Narrow Bandwidth RU In OFDMA Tolerance:0
I (894) wifi:state: assoc -> run (0x10)
I (894) wifi:(trc)phytype:CBW20-SGI, snr:58, maxRate:144, highestRateIdx:0
W (904) wifi:(trc)band:2G, phymode:3, highestRateIdx:0, lowestRateIdx:11, dataSchedTableSize:14
I (914) wifi:(trc)band:2G, rate(S-MCS7, rateIdx:0), ampdu(rate:S-MCS7, schedIdx(0, stop:8)), snr:58, ampduState:wait operational
I (924) wifi:ifidx:0, rssi:-38, nf:-96, phytype(0x3, CBW20-SGI), phymode(0x3, 11bgn), max_rate:144, he:0, vht:0, ht:1
I (934) wifi:(ht)max.RxAMPDULenExponent:3(65535 bytes), MMSS:5(4 us)
I (944) BLE_INIT: Bluetooth MAC: 40:4c:ca:43:b1:d2
I (954) wifi:connected with xxxx, aid = 4, channel 1, BW20, bssid = 58:86:94:58:91:ea
I (954) wifi:security: WPA2-PSK, phy:11bgn, rssi:-38, cipher(pairwise:0x3, group:0x3), pmf:0,
I (964) wifi:pm start, type: 1, twt_start:0

I (964) wifi:pm start, type:1, aid:0x4, trans-BSSID:58:86:94:58:91:ea, BSSID[5]:0xea, mbssid(max-indicator:0, index:0), he:0
I (974) wifi:dp: 1, bi: 102400, li: 3, scale listen interval from 307200 us to 307200 us
I (984) wifi:set rx beacon pti, rx_bcn_pti: 10, bcn_timeout: 25000, mt_pti: 10, mt_time: 10000
I (994) wifi:[ADDBA]TX addba request, tid:0, dialogtoken:1, bufsize:64, A-MSDU:0(not supported), policy:1(IMR), ssn:0(0x0)
I (1004) wifi:[ADDBA]TX addba request, tid:7, dialogtoken:2, bufsize:64, A-MSDU:0(not supported), policy:1(IMR), ssn:0(0x20)
I (1014) wifi:[ADDBA]TX addba request, tid:5, dialogtoken:3, bufsize:64, A-MSDU:0(not supported), policy:1(IMR), ssn:0(0x0)
I (1024) wifi:AP's beacon interval = 102400 us, DTIM period = 3
I (1034) wifi:[ADDBA]RX addba response, status:0, tid:0/tb:1(0xa1), bufsize:64, batimeout:0, txa_wnd:64
I (1044) wifi:[ADDBA]RX addba response, status:0, tid:7/tb:1(0xa1), bufsize:64, batimeout:0, txa_wnd:64
I (1054) wifi:[ADDBA]RX addba response, status:0, tid:5/tb:1(0xa1), bufsize:64, batimeout:0, txa_wnd:64
I (1064) phy: libbtbb version: 99f6adc, Feb 6 2025, 14:39:27
I (1094) HID_LE_PRF: esp_hidd_prf_cb_hdl(), start added the hid service to the stack database. incl_handle = 40
I (1104) HID_LE_PRF: hid svc handle = 2d
I (1104) main_task: Returned from app_main()
W (1644) wifi:<ba-add>idx:0, ifx:0, tid:0, TAHI:0x100ea91, TALO:0x58948658, (ssn:0, win:64, cur_ssn:0), CONF:0xc0000005


I (2064) HID_LE_PRF: HID connection establish, conn_id = 0
I (2064) HID_DEMO: ESP_HIDD_EVENT_BLE_CONNECT
I (2304) HID_DEMO: remote BD_ADDR: 7df4c860a0af
I (2304) HID_DEMO: address type = 1
I (2304) HID_DEMO: pair status = success
I (2734) esp_netif_handlers: sta ip: 192.168.0.4, mask: 255.255.255.0, gw: 192.168.0.1
I (2734) HID_DEMO: got ip: 192.168.0.4
I (4104) HID_DEMO: Advertising stop requested
I (14104) HID_DEMO: esp_wifi_set_ps().
I (14104) wifi:Set ps type: 1, coexist: 1

I (24104) HID_DEMO: release s_no_sleep
W (41024) BT_HCI: hcif disc complete: hdl 0x0, rsn 0x8
I (41024) HID_DEMO: ESP_HIDD_EVENT_BLE_DISCONNECT
I (41344) HID_LE_PRF: HID connection establish, conn_id = 0
I (41344) HID_DEMO: ESP_HIDD_EVENT_BLE_CONNECT
I (41504) HID_DEMO: remote BD_ADDR: 7df4c860a0af
I (41504) HID_DEMO: address type = 1
I (41504) HID_DEMO: pair status = success