add: TinyUSB demo setup

.github/workflows/build-firmware.yml

@@ -28,6 +28,9 @@ jobs:
           curl -L $url | tar -xJf - -C toolchain
           mv toolchain/`ls toolchain` toolchain/arm-none-eabi
 
+      - name: load tinyusb
+        run: git submodule update
+
       - name: build firmware
         run: |
           cd device/firmware
@@ -36,4 +39,4 @@ jobs:
       - uses: actions/upload-artifact@v4
         with:
           name: firmware
-          path: device/firmware/build/firmware.*
+          path: device/firmware/build/firmware.*

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "device/firmware/tinyusb"]
+	path = device/firmware/tinyusb
+	url = https://github.com/hathach/tinyusb.git

device/firmware/Core/Inc/energymeter.h

@@ -6,8 +6,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "usbd_cdc_if.h"
-
 /******************************************************************************
  * basic definitions
  *****************************************************************************/
@@ -168,11 +166,11 @@ typedef enum {
  * USB CDC transmit macro
  *****************************************************************************/
 #define USB_Transmit(buf, len)             \
-  {                                        \
+  /*{                                        \
     do {                                   \
       usb_ret = CDC_Transmit_FS(buf, len); \
     } while (usb_ret == USBD_BUSY);        \
-  }
+  }*/
 
 /******************************************************************************
  * debug configuration

device/firmware/Core/Inc/tusb_config.h

@@ -0,0 +1,114 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 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.
+ *
+ */
+
+#ifndef _TUSB_CONFIG_H_
+#define _TUSB_CONFIG_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// Board Specific Configuration
+//--------------------------------------------------------------------+
+
+// RHPort number used for device can be defined by board.mk, default to port 0
+#ifndef BOARD_TUD_RHPORT
+  #define BOARD_TUD_RHPORT 0
+#endif
+
+// RHPort max operational speed can defined by board.mk
+#ifndef BOARD_TUD_MAX_SPEED
+  #define BOARD_TUD_MAX_SPEED OPT_MODE_DEFAULT_SPEED
+#endif
+
+//--------------------------------------------------------------------
+// Common Configuration
+//--------------------------------------------------------------------
+
+// defined by compiler flags for flexibility
+#ifndef CFG_TUSB_MCU
+  #define CFG_TUSB_MCU OPT_MCU_STM32F1
+#endif
+
+#ifndef CFG_TUSB_OS
+  #define CFG_TUSB_OS OPT_OS_NONE
+#endif
+
+#ifndef CFG_TUSB_DEBUG
+  #define CFG_TUSB_DEBUG 0
+#endif
+
+// Enable Device stack
+#define CFG_TUD_ENABLED 1
+
+// Default is max speed that hardware controller could support with on-chip PHY
+#define CFG_TUD_MAX_SPEED BOARD_TUD_MAX_SPEED
+
+/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
+ * Tinyusb use follows macros to declare transferring memory so that they can be put
+ * into those specific section.
+ * e.g
+ * - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
+ * - CFG_TUSB_MEM_ALIGN   : __attribute__ ((aligned(4)))
+ */
+#ifndef CFG_TUSB_MEM_SECTION
+  #define CFG_TUSB_MEM_SECTION
+#endif
+
+#ifndef CFG_TUSB_MEM_ALIGN
+  #define CFG_TUSB_MEM_ALIGN __attribute__((aligned(4)))
+#endif
+
+  //--------------------------------------------------------------------
+  // DEVICE CONFIGURATION
+  //--------------------------------------------------------------------
+
+#ifndef CFG_TUD_ENDPOINT0_SIZE
+  #define CFG_TUD_ENDPOINT0_SIZE 64
+#endif
+
+//------------- CLASS -------------//
+#define CFG_TUD_CDC    1
+#define CFG_TUD_MSC    1
+#define CFG_TUD_HID    0
+#define CFG_TUD_MIDI   0
+#define CFG_TUD_VENDOR 0
+
+// CDC FIFO size of TX and RX
+#define CFG_TUD_CDC_RX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
+#define CFG_TUD_CDC_TX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
+
+// CDC Endpoint transfer buffer size, more is faster
+#define CFG_TUD_CDC_EP_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
+
+// MSC Buffer size of Device Mass storage
+#define CFG_TUD_MSC_EP_BUFSIZE 512
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _TUSB_CONFIG_H_ */

device/firmware/Core/Src/energymeter_usb.c

@@ -1,20 +1,26 @@
 #include <stdio.h>
 #include <stdint.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "ff.h"
-#include "usbd_cdc_if.h"
+#include "tusb.h"
 
 #include "energymeter.h"
 #include "energymeter_usb.h"
 
+#define APP_TX_DATA_SIZE 1024
+#define APP_RX_DATA_SIZE 1024
+
 /******************************************************************************
  * global variables
  *****************************************************************************/
 /* USB CDC receive flag and buffer */
 uint32_t usb_flag = FALSE;
-extern uint8_t UserRxBufferFS[];
-extern uint8_t UserTxBufferFS[];
+// extern uint8_t UserRxBufferFS[];
+// extern uint8_t UserTxBufferFS[];
+uint8_t UserRxBufferFS[APP_RX_DATA_SIZE];
+uint8_t UserTxBufferFS[APP_TX_DATA_SIZE];
 uint8_t UserTxBufferFS_2[APP_TX_DATA_SIZE];
 
 /* USB CDC command from the host system */
@@ -79,6 +85,9 @@ void mode_usb(void) {
   uint32_t tick = HAL_GetTick();
   HAL_GPIO_TogglePin(LED_STATUS_GPIO_Port, LED_STATUS_Pin);
 
+  // TinyUSB init
+  tusb_init();
+
   // we don't need to be super fast here.
   // let's just play with strings and busy wait led blink
   while (1) {
@@ -137,6 +146,8 @@ void mode_usb(void) {
 
     usb_flag = FALSE;
   }
+
+  tud_task();
 }
 
 /******************************************************************************