roma-jam
commented
2 days ago Hi, @buzhaodi,
There are only 8 channels available on ESP32S3. There is an error in the log about that:
E (1164) HCD DWC: No more HCD channels available
Each Hub occupies 2 channels, so the are only 5 left. Every HID device requires 1 channel for CTRL endpoint and 1 channel per interface. If HID device has 3 interfaces (Mouse, Keyboard and for example unspecified protocol «None»), for two such devices you already need 8 channels in total (So, with Hub it will be 2+(1+3)*2) > 8).
Currently, the HID Host Driver allocates a channel for each interface, even if the last one is not used. Which is also a limitation factor.
Can you try to use simple usb_host_lib example from esp-idf with all attached devices you want and attach its output log here?
Connect multiple HID devices (such as a keyboard and mouse) using a USB hub or directly.
Do you have the same problem, when you connect HID devices directly (without external Hub)?
The limitation in the HID Host Driver could be removed (but we don’t have it planned yet), meanwhile you could try any other HID devices, which have less interfaces to fit into 8 channels on S3.
Answers checklist.
General issue report
When using the USB host mode on the ESP32-S3 to connect multiple HID devices (keyboard and mouse), I encountered the following errors:
Steps to Reproduce Power on the ESP32-S3 development board. Connect multiple HID devices (such as a keyboard and mouse) using a USB hub or directly. Run the application and observe the output logs. Expected Behavior I expect to be able to connect and recognize multiple HID devices simultaneously without encountering errors.
Actual Behavior When connecting multiple devices, the system is unable to allocate enough HCD channels and returns the ESP_ERR_NOT_SUPPORTED error. This leads to the failure to successfully claim the interface, preventing the HID devices from functioning properly.
Additional Information ESP-IDF Version: v5.4-dev-3951-g9106c43acc Relevant Code: The issue occurs in the hid_host_example.c example, specifically at line 437 during the call to hid_host_device_open. Hardware Information: ESP32-S3 development board, connected HID devices include a brand-name USB keyboard and USB mouse.
不好意思 英语有点难受 回归中文，我想知道是ESP32-S3的host模式不能用hub吗？还是需要改代码？我看报错位置是usb_dwc_hal_chan_alloc这个函数，貌似是要alloc个东西。。我看OTG_NUM_HOST_CHAN这个的定义是16 是不是也就是只有一个？
Rebooting... ESP-ROM:esp32s3-20210327 Build:Mar 27 2021 rst:0xc (RTC_SW_CPU_RST),boot:0x28 (SPI_FAST_FLASH_BOOT) Saved PC:0x40375a18 --- 0x40375a18: esp_restart_noos at D:/esp32/esp-idf/components/esp_system/port/soc/esp32s3/system_internal.c:160
SPIWP:0xee mode:DIO, clock div:1 load:0x3fce2810,len:0x15a0 load:0x403c8700,len:0x4 load:0x403c8704,len:0xd20 load:0x403cb700,len:0x2edc entry 0x403c8928 I (31) boot: ESP-IDF v5.4-dev-3951-g9106c43acc 2nd stage bootloader I (31) boot: compile time Nov 3 2024 14:09:17 I (31) boot: Multicore bootloader I (33) boot: chip revision: v0.2 I (36) boot: efuse block revision: v1.3 I (40) boot.esp32s3: Boot SPI Speed : 80MHz I (43) boot.esp32s3: SPI Mode : DIO I (47) boot.esp32s3: SPI Flash Size : 2MB I (51) boot: Enabling RNG early entropy source... I (55) boot: Partition Table: I (58) boot: ## Label Usage Type ST Offset Length I (64) boot: 0 nvs WiFi data 01 02 00009000 00006000 I (71) boot: 1 phy_init RF data 01 01 0000f000 00001000 I (77) boot: 2 factory factory app 00 00 00010000 00100000 I (84) boot: End of partition table I (87) esp_image: segment 0: paddr=00010020 vaddr=3c030020 size=0d5f0h ( 54768) map I (104) esp_image: segment 1: paddr=0001d618 vaddr=3fc92400 size=028c0h ( 10432) load I (107) esp_image: segment 2: paddr=0001fee0 vaddr=40374000 size=00138h ( 312) load I (110) esp_image: segment 3: paddr=00020020 vaddr=42000020 size=22560h (140640) map I (142) esp_image: segment 4: paddr=00042588 vaddr=40374138 size=0e27ch ( 57980) load I (155) esp_image: segment 5: paddr=0005080c vaddr=600fe100 size=0001ch ( 28) load I (161) boot: Loaded app from partition at offset 0x10000 I (161) boot: Disabling RNG early entropy source... I (172) cpu_start: Multicore app I (182) cpu_start: Pro cpu start user code I (182) cpu_start: cpu freq: 160000000 Hz I (182) app_init: Application information: I (182) app_init: Project name: hid I (185) app_init: App version: 1 I (189) app_init: Compile time: Nov 3 2024 14:08:17 I (194) app_init: ELF file SHA256: 05856467c... I (198) app_init: ESP-IDF: v5.4-dev-3951-g9106c43acc I (203) efuse_init: Min chip rev: v0.0 I (207) efuse_init: Max chip rev: v0.99 I (211) efuse_init: Chip rev: v0.2 I (215) heap_init: Initializing. RAM available for dynamic allocation: I (221) heap_init: At 3FC95530 len 000541E0 (336 KiB): RAM I (227) heap_init: At 3FCE9710 len 00005724 (21 KiB): RAM I (232) heap_init: At 3FCF0000 len 00008000 (32 KiB): DRAM I (237) heap_init: At 600FE11C len 00001ECC (7 KiB): RTCRAM I (243) spi_flash: detected chip: generic I (246) spi_flash: flash io: dio W (249) spi_flash: Detected size(16384k) larger than the size in the binary image header(2048k). Using the size in the binary image header. I (261) sleep_gpio: Configure to isolate all GPIO pins in sleep state I (268) sleep_gpio: Enable automatic switching of GPIO sleep configuration I (274) main_task: Started on CPU0 I (284) main_task: Calling app_main() I (284) example: HID Host example I (284) gpio: GPIO[0]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:2 I (324) example: Waiting for HID Device to be connected W (704) hid-host: No HID device at USB port 1 I (884) example: HID Device, protocol 'KEYBOARD' CONNECTED I (984) example: HID Device, protocol 'MOUSE' CONNECTED I (1064) example: HID Device, protocol 'KEYBOARD' CONNECTED I (1164) example: HID Device, protocol 'MOUSE' CONNECTED E (1164) HCD DWC: No more HCD channels available E (1164) USBH: EP Alloc error: ESP_ERR_NOT_SUPPORTED E (1164) USB HOST: EP allocation error ESP_ERR_NOT_SUPPORTED E (1164) USB HOST: Claiming interface error: ESP_ERR_NOT_SUPPORTED E (1174) hid-host: hid_host_interface_claim_and_prepare_transfer(576): Unable to claim Interface E (1184) hid-host: hid_host_device_open(1186): Unable to claim interface ESP_ERROR_CHECK failed: esp_err_t 0x106 (ESP_ERR_NOT_SUPPORTED) at 0x4200775a --- 0x4200775a: hid_host_device_event at D:/esp32/hid/hid/main/hid_host_example.c:437 (discriminator 1)
file: "./main/hid_host_example.c" line 437 func: hid_host_device_event expression: hid_host_device_open(hid_device_handle, &dev_config)
abort() was called at PC 0x40379c5b on core 0 --- 0x40379c5b: _esp_error_check_failed at D:/esp32/esp-idf/components/esp_system/esp_err.c:49
Backtrace: 0x40375ad9:0x3fc97810 0x40379c65:0x3fc97830 0x403802f5:0x3fc97850 0x40379c5b:0x3fc978c0
0x4200775a:0x3fc978f0 0x42007965:0x3fc97920 0x42021efb:0x3fc979a0 0x4037a645:0x3fc979d0 --- 0x40375ad9: panic_abort at D:/esp32/esp-idf/components/esp_system/panic.c:454 0x40379c65: esp_system_abort at D:/esp32/esp-idf/components/esp_system/port/esp_system_chip.c:92 0x403802f5: abort at D:/esp32/esp-idf/components/newlib/abort.c:38 0x40379c5b: _esp_error_check_failed at D:/esp32/esp-idf/components/esp_system/esp_err.c:49 0x4200775a: hid_host_device_event at D:/esp32/hid/hid/main/hid_host_example.c:437 (discriminator 1) 0x42007965: app_main at D:/esp32/hid/hid/main/hid_host_example.c:604 0x42021efb: main_task at D:/esp32/esp-idf/components/freertos/app_startup.c:208 0x4037a645: vPortTaskWrapper at D:/esp32/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/port.c:139
ELF file SHA256: 05856467c