tweak usb reset wait time, fix test script with IAR server

Author: hathach

.github/workflows/build_esp.yml

@@ -96,9 +96,9 @@ jobs:
         run: |
           for port in $(lspci | grep USB | cut -d' ' -f1); do
               echo -n "0000:${port}"| sudo tee /sys/bus/pci/drivers/xhci_hcd/unbind;
-              sleep 1;
+              sleep 0.5;
               echo -n "0000:${port}" | sudo tee /sys/bus/pci/drivers/xhci_hcd/bind;
-              sleep 1;
+              sleep 3;
           done
 
       - name: Test on actual hardware

.github/workflows/cmake_arm.yml

@@ -148,9 +148,9 @@ jobs:
         run: |
           for port in $(lspci | grep USB | cut -d' ' -f1); do
               echo -n "0000:${port}"| sudo tee /sys/bus/pci/drivers/xhci_hcd/unbind;
-              sleep 1;
+              sleep 0.5;
               echo -n "0000:${port}" | sudo tee /sys/bus/pci/drivers/xhci_hcd/bind;
-              sleep 1;
+              sleep 3;
           done
 
       - name: Test on actual hardware

test/hil/hil_test.py

@@ -34,8 +34,11 @@
 import json
 import glob
 
-# for RPI double reset: install sudo apt install python3-gpiozero or sudo pip install gpiozero
-from gpiozero import LED
+# for RPI double reset
+try:
+    import gpiozero
+except ImportError:
+    pass
 
 
 ENUM_TIMEOUT = 10
@@ -141,7 +144,7 @@ def flash_esptool(board, firmware):
 
 def doublereset_with_rpi_gpio(board):
     # Off = 0 = Reset
-    led = LED(board["flasher_reset_pin"])
+    led = gpiozero.LED(board["flasher_reset_pin"])
 
     led.off()
     time.sleep(0.1)