adding support for esp32 for use with max3421e host

hw/bsp/espressif/boards/adafruit_feather_esp32_v2/board.cmake

@@ -0,0 +1,2 @@
+# Apply board specific content here
+set(IDF_TARGET "esp32")

hw/bsp/espressif/boards/adafruit_feather_esp32_v2/board.h

@@ -0,0 +1,53 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020, Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef BOARD_H_
+#define BOARD_H_
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+#define NEOPIXEL_PIN          0
+#define NEOPIXEL_POWER_PIN    2
+#define NEOPIXEL_POWER_STATE  1
+
+#define BUTTON_PIN            38
+#define BUTTON_STATE_ACTIVE   0
+
+// SPI for USB host shield
+#define MAX3421_SPI_HOST SPI3_HOST
+#define MAX3421_SCK_PIN  5
+#define MAX3421_MOSI_PIN 19
+#define MAX3421_MISO_PIN 21
+#define MAX3421_CS_PIN   33
+#define MAX3421_INTR_PIN 15
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* BOARD_H_ */

hw/bsp/espressif/boards/family.c

@@ -30,8 +30,12 @@
 #include "esp_rom_gpio.h"
 #include "esp_mac.h"
 #include "hal/gpio_ll.h"
+
+#if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
 #include "hal/usb_hal.h"
 #include "soc/usb_periph.h"
+static void configure_pins(usb_hal_context_t* usb);
+#endif
 
 #include "driver/gpio.h"
 #include "driver/uart.h"
@@ -56,7 +60,6 @@ static led_strip_handle_t led_strip;
 static void max3421_init(void);
 #endif
 
-static void configure_pins(usb_hal_context_t* usb);
 
 //--------------------------------------------------------------------+
 // Implementation
@@ -100,7 +103,6 @@ void board_init(void) {
   };
 
   ESP_ERROR_CHECK(led_strip_new_rmt_device(&strip_config, &rmt_config, &led_strip));
-
   led_strip_clear(led_strip); // off
 #endif
 
@@ -109,6 +111,7 @@ void board_init(void) {
   gpio_set_direction(BUTTON_PIN, GPIO_MODE_INPUT);
   gpio_set_pull_mode(BUTTON_PIN, BUTTON_STATE_ACTIVE ? GPIO_PULLDOWN_ONLY : GPIO_PULLUP_ONLY);
 
+#if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
   // USB Controller Hal init
   periph_module_reset(PERIPH_USB_MODULE);
   periph_module_enable(PERIPH_USB_MODULE);
@@ -118,12 +121,14 @@ void board_init(void) {
   };
   usb_hal_init(&hal);
   configure_pins(&hal);
+#endif
 
 #if CFG_TUH_ENABLED && CFG_TUH_MAX3421
   max3421_init();
 #endif
 }
 
+#if TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
 static void configure_pins(usb_hal_context_t* usb) {
   /* usb_periph_iopins currently configures USB_OTG as USB Device.
    * Introduce additional parameters in usb_hal_context_t when adding support
@@ -153,6 +158,7 @@ static void configure_pins(usb_hal_context_t* usb) {
     gpio_set_drive_capability(USBPHY_DP_NUM, GPIO_DRIVE_CAP_3);
   }
 }
+#endif
 
 //--------------------------------------------------------------------+
 // Board porting API
@@ -208,15 +214,12 @@ SemaphoreHandle_t max3421_intr_sem;
 
 static void IRAM_ATTR max3421_isr_handler(void* arg) {
   (void) arg; // arg is gpio num
-  gpio_set_level(13, 1);
 
   BaseType_t xHigherPriorityTaskWoken = pdFALSE;
   xSemaphoreGiveFromISR(max3421_intr_sem, &xHigherPriorityTaskWoken);
   if (xHigherPriorityTaskWoken) {
     portYIELD_FROM_ISR();
   }
-
-  gpio_set_level(13, 0);
 }
 
 static void max3421_intr_task(void* param) {
@@ -250,16 +253,12 @@ static void max3421_init(void) {
 
   spi_device_interface_config_t max3421_cfg = {
       .mode = 0,
-      .clock_speed_hz = 26000000,
+      .clock_speed_hz = 20000000, // S2/S3 can work with 26 Mhz, but esp32 seems only work up to 20 Mhz
       .spics_io_num = -1, // manual control CS
       .queue_size = 1
   };
   ESP_ERROR_CHECK(spi_bus_add_device(MAX3421_SPI_HOST, &max3421_cfg, &max3421_spi));
 
-  // debug
-  gpio_set_direction(13, GPIO_MODE_OUTPUT);
-  gpio_set_level(13, 0);
-
   // Interrupt pin
   max3421_intr_sem = xSemaphoreCreateBinary();
   xTaskCreate(max3421_intr_task, "max3421 intr", 2048, NULL, configMAX_PRIORITIES - 2, NULL);

hw/bsp/espressif/components/tinyusb_src/CMakeLists.txt

@@ -5,17 +5,7 @@ set(includes_public)
 set(compile_options)
 set(tusb_src "${CMAKE_CURRENT_SOURCE_DIR}/../../../../../src")
 
-if(target STREQUAL "esp32s3")
-  set(tusb_mcu "OPT_MCU_ESP32S3")
-elseif(target STREQUAL "esp32s2")
-  set(tusb_mcu "OPT_MCU_ESP32S2")
-else()
-  # CONFIG_TINYUSB dependency has been guaranteed by Kconfig logic,
-  # So it's not possible that cmake goes here
-  message(FATAL_ERROR "TinyUSB is not support on ${target}.")
-  return()
-endif()
-
+string(TOUPPER OPT_MCU_${target} tusb_mcu)
 list(APPEND compile_definitions
   CFG_TUSB_MCU=${tusb_mcu}
   CFG_TUSB_OS=OPT_OS_FREERTOS

hw/bsp/espressif/family.cmake

@@ -3,11 +3,7 @@ cmake_minimum_required(VERSION 3.5)
 # Apply board specific content i.e IDF_TARGET must be set before project.cmake is included
 include("${CMAKE_CURRENT_LIST_DIR}/boards/${BOARD}/board.cmake")
 
-if(IDF_TARGET STREQUAL "esp32s2")
-  set(FAMILY_MCUS ESP32S2)
-elseif(IDF_TARGET STREQUAL "esp32s3")
-  set(FAMILY_MCUS ESP32S3)
-endif()
+string(TOUPPER ${IDF_TARGET} FAMILY_MCUS)
 
 # Add example src and bsp directories
 set(EXTRA_COMPONENT_DIRS "src" "${CMAKE_CURRENT_LIST_DIR}/boards" "${CMAKE_CURRENT_LIST_DIR}/components")