Merge pull request #337 from adafruit/support-max3421-for-esp32

Support max3421 for esp32

Author: hathach

examples/DualRole/CDC/serial_host_bridge/.feather_rp2040_tinyusb.test.only

@@ -71,17 +71,19 @@ void forward_serial(void) {
 //--------------------------------------------------------------------+
 
 #ifdef USE_FREERTOS
+
+#ifdef ARDUINO_ARCH_ESP32
+  #define USBH_STACK_SZ 2048
+#else
+  #define USBH_STACK_SZ 200
+#endif
+
 void usbhost_rtos_task(void *param) {
   (void) param;
   while (1) {
     USBHost.task();
   }
 }
-
-void create_usbhost_rtos_task(void) {
-  const uint32_t usbh_stack_size = 200;
-  xTaskCreate(usbhost_rtos_task, "usbh", usbh_stack_size, NULL, TASK_PRIO_HIGH, NULL);
-}
 #endif
 
 void setup() {
@@ -94,7 +96,8 @@ void setup() {
   SerialHost.begin(115200);
 
 #ifdef USE_FREERTOS
-  create_usbhost_rtos_task();
+  // Create a task to run USBHost.task() in background
+  xTaskCreate(usbhost_rtos_task, "usbh", USBH_STACK_SZ, NULL, 3, NULL);
 #endif
 
 //  while ( !Serial ) delay(10);   // wait for native usb

examples/DualRole/CDC/serial_host_bridge/.metro_m0_tinyusb.only

@@ -50,8 +50,14 @@
 
 #if defined(CFG_TUH_MAX3421) && CFG_TUH_MAX3421
   #include "SPI.h"
+
+  #ifdef ARDUINO_ARCH_ESP32
+  // ESP32 specify SCK, MOSI, MISO, CS, INT
+  Adafruit_USBH_Host USBHost(36, 35, 37, 15, 14);
+  #else
   // USB Host using MAX3421E: SPI, CS, INT
   Adafruit_USBH_Host USBHost(&SPI, 10, 9);
+  #endif
 #else
   Adafruit_USBH_Host USBHost;
 #endif