Tomas Cerskus / USBDevice

USB device stack with Nucleo F401RE support. NOTE: the default clock config needs to be changed to in order for USB to work.

Fork of USBDevice by Tomas Cerskus

Slightly modified original USBDevice library to support F401RE.

On F401RE the data pins of your USB connector should be attached to PA12 (D+) and PA11(D-). It is also required to connect the +5V USB line to PA9.

F401RE requires 48MHz clock for USB. Therefore in order for this to work you will need to change the default clock settings:

Clock settings for USB

#include "stm32f4xx_hal.h"

RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = 16;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
RCC_OscInitStruct.PLL.PLLM = 16;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
RCC_OscInitStruct.PLL.PLLQ = 7;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
    error("RTC error: LSI clock initialization failed."); 
}

NOTE: Changing the clock frequency might affect the behavior of other libraries. I only tested the Serial library.

UPDATE: Clock settings should not to be changed anymore! Looks like the newer mbed library has the required clock enabled.

USBDevice/USBEndpoints_STM32F4.h

Committer:
tolaipner
Date:
2014-03-30
Revision:
24:4ed3e25c3edc
Parent:
16:4f6df64750bd

File content as of revision 24:4ed3e25c3edc:

/* Copyright (c) 2010-2011 mbed.org, MIT License
*
* 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.
*/

#define NUMBER_OF_LOGICAL_ENDPOINTS (4)
#define NUMBER_OF_PHYSICAL_ENDPOINTS (NUMBER_OF_LOGICAL_ENDPOINTS * 2)

/* Define physical endpoint numbers */

/*      Endpoint    No.     Type(s)       MaxPacket   DoubleBuffer  */
/*      ----------------    ------------  ----------  ---           */
#define EP0OUT      (0)  /* Control       64          No            */
#define EP0IN       (1)  /* Control       64          No            */
#define EP1OUT      (2)  /* Int/Bulk/Iso  64/64/1023  Yes           */
#define EP1IN       (3)  /* Int/Bulk/Iso  64/64/1023  Yes           */
#define EP2OUT      (4)  /* Int/Bulk/Iso  64/64/1023  Yes           */
#define EP2IN       (5)  /* Int/Bulk/Iso  64/64/1023  Yes           */
#define EP3OUT      (6)  /* Int/Bulk/Iso  64/64/1023  Yes           */
#define EP3IN       (7)  /* Int/Bulk/Iso  64/64/1023  Yes           */

/* Maximum Packet sizes */

#define MAX_PACKET_SIZE_EP0 (64)
#define MAX_PACKET_SIZE_EP1 (64) /* Int/Bulk */
#define MAX_PACKET_SIZE_EP2 (64) /* Int/Bulk */
#define MAX_PACKET_SIZE_EP3 (64) /* Int/Bulk */

#define MAX_PACKET_SIZE_EP1_ISO (1023) /* Isochronous */
#define MAX_PACKET_SIZE_EP2_ISO (1023) /* Isochronous */
#define MAX_PACKET_SIZE_EP3_ISO (1023) /* Isochronous */

/* Generic endpoints - intended to be portable accross devices */
/* and be suitable for simple USB devices. */

/* Bulk endpoint */
#define EPBULK_OUT  (EP2OUT)
#define EPBULK_IN   (EP2IN)
/* Interrupt endpoint */
#define EPINT_OUT   (EP1OUT)
#define EPINT_IN    (EP1IN)
/* Isochronous endpoint */
#define EPISO_OUT   (EP3OUT)
#define EPISO_IN    (EP3IN)

#define MAX_PACKET_SIZE_EPBULK  (MAX_PACKET_SIZE_EP2)
#define MAX_PACKET_SIZE_EPINT   (MAX_PACKET_SIZE_EP1)
#define MAX_PACKET_SIZE_EPISO   (MAX_PACKET_SIZE_EP3_ISO)