Esp32s2 usb host mode

.github/workflows/platformio.yml

@@ -15,7 +15,7 @@ jobs:
       run: |
         sudo apt-get install rename
         python -m pip install --upgrade pip
-        pip install -U platformio==5.2.5
+        pip install -U platformio==6.1.6
     - name: Run PlatformIO
       run: |
         set -x

.gitignore

@@ -18,7 +18,6 @@ dist/
 downloads/
 eggs/
 .eggs/
-lib/
 lib64/
 parts/
 sdist/

CMakeLists.txt

@@ -0,0 +1,3 @@
+cmake_minimum_required(VERSION 3.16.0)
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(WirelessPrinting)

ESP8266WirelessPrintAsync/CMakeLists.txt

@@ -0,0 +1,20 @@
+# This file was automatically generated for projects
+# without default 'CMakeLists.txt' file.
+
+FILE(GLOB_RECURSE app_sources ${CMAKE_SOURCE_DIR}/ESP8266WirelessPrintAsync/*.*)
+
+idf_component_register(
+  SRCS ${app_sources}
+  INCLUDE_DIRS "." "../components/usb_host_ch34x_vcp/include/usb"
+  REQUIRES usb_host_ch34x_vcp usb_host_cdc_acm usb_host_cp210x_vcp usb_host_vcp usb_host_ftdi_vcp
+)
+
+# Use of usb_host_vcp requires c++14, -fconcepts
+# as we are importing a header using the `auto` symbol
+# Additionally -fexceptions was enabled in components/usb_host_vcp/CMakeLists.txt to support exception handling which platformio apparently disables by default?
+set_target_properties(${COMPONENT_LIB} PROPERTIES
+    CXX_STANDARD 17
+    CXX_STANDARD_REQUIRED ON
+)
+target_compile_options(${COMPONENT_LIB} PRIVATE -fconcepts)
+

ESP8266WirelessPrintAsync/CommandQueue.cpp

@@ -22,11 +22,14 @@ int CommandQueue::getFreeSlots() {
 // Tries to Add a command to the queue, returns true if possible
 bool CommandQueue::push(const String command) {
   int next = nextBufferSlot(head);
-  if (next == tail || command == "")
+  if (next == tail || command == "") {
+    log_w("Ignoring command; empty cmd or full buffer");
     return false;
+  }
 
   commandBuffer[head] = command;
   head = next;
+  //log_i("PUSH %s", command.c_str());
 
   return true;
 }
@@ -38,7 +41,8 @@ String CommandQueue::popSend() {
 
   const String command = commandBuffer[sendTail];
   sendTail = nextBufferSlot(sendTail);
-
+  //log_i("POPSEND %s", command.c_str());
+
   return command;
 }
 
@@ -49,6 +53,7 @@ String CommandQueue::popAcknowledge() {
 
   const String command = commandBuffer[tail];
   tail = nextBufferSlot(tail);
+  //log_i("ACK %s", command.c_str());
 
   return command;
 }