diff options
Diffstat (limited to 'tinyusb/host/usbh.c')
| -rw-r--r-- | tinyusb/host/usbh.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/tinyusb/host/usbh.c b/tinyusb/host/usbh.c index 229c9da65..bfbaa3a64 100644 --- a/tinyusb/host/usbh.c +++ b/tinyusb/host/usbh.c @@ -352,6 +352,11 @@ OSAL_TASK_FUNCTION(usbh_enumeration_task) (void* p_task_para) tusb_error_t enumeration_body_subtask(void) { + enum { + POWER_STABLE_DELAY = 300, + RESET_DELAY = 100 // NXP's EHCI require more than 50ms to work properly although the USB specs say only 50ms + }; + tusb_error_t error; usbh_enumerate_t enum_entry; @@ -375,12 +380,12 @@ tusb_error_t enumeration_body_subtask(void) { if( hcd_port_connect_status(usbh_devices[0].core_id) ) { // connection event - osal_task_delay(200); // wait until device is stable. Increase this if the first 8 bytes is failed to get + osal_task_delay(POWER_STABLE_DELAY); // wait until device is stable. Increase this if the first 8 bytes is failed to get if ( !hcd_port_connect_status(usbh_devices[0].core_id) ) SUBTASK_EXIT(TUSB_ERROR_NONE); // exit if device unplugged while delaying hcd_port_reset( usbh_devices[0].core_id ); // port must be reset to have correct speed operation - osal_task_delay(50); // USB Specs: reset is recommended to last 50 ms + osal_task_delay(RESET_DELAY); usbh_devices[0].speed = hcd_port_speed_get( usbh_devices[0].core_id ); } @@ -446,7 +451,7 @@ tusb_error_t enumeration_body_subtask(void) { // connected directly to roothub SUBTASK_ASSERT_STATUS(error); // TODO some slow device is observed to fail the very fist controller xfer, can try more times hcd_port_reset( usbh_devices[0].core_id ); // reset port after 8 byte descriptor - osal_task_delay(50); // TODO reset is recommended to last 50 ms (NXP EHCI passes this) + osal_task_delay(RESET_DELAY); } #if TUSB_CFG_HOST_HUB else |