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/USBHAL.h@1:80ab0d068708, 2012-07-17 (annotated)

Committer:
samux
Date:
Tue Jul 17 14:30:29 2012 +0000
Revision:
1:80ab0d068708
Child:
8:335f2506f422
Update USBDevice lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:80ab0d068708 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:80ab0d068708 2 *
samux 1:80ab0d068708 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:80ab0d068708 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:80ab0d068708 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:80ab0d068708 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:80ab0d068708 7 * Software is furnished to do so, subject to the following conditions:
samux 1:80ab0d068708 8 *
samux 1:80ab0d068708 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:80ab0d068708 10 * substantial portions of the Software.
samux 1:80ab0d068708 11 *
samux 1:80ab0d068708 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:80ab0d068708 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:80ab0d068708 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:80ab0d068708 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:80ab0d068708 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:80ab0d068708 17 */
samux 1:80ab0d068708 18
samux 1:80ab0d068708 19 #ifndef USBBUSINTERFACE_H
samux 1:80ab0d068708 20 #define USBBUSINTERFACE_H
samux 1:80ab0d068708 21
samux 1:80ab0d068708 22 #include "mbed.h"
samux 1:80ab0d068708 23 #include "USBEndpoints.h"
samux 1:80ab0d068708 24
samux 1:80ab0d068708 25 class USBHAL {
samux 1:80ab0d068708 26 public:
samux 1:80ab0d068708 27 /* Configuration */
samux 1:80ab0d068708 28 USBHAL();
samux 1:80ab0d068708 29 ~USBHAL();
samux 1:80ab0d068708 30 void connect(void);
samux 1:80ab0d068708 31 void disconnect(void);
samux 1:80ab0d068708 32 void configureDevice(void);
samux 1:80ab0d068708 33 void unconfigureDevice(void);
samux 1:80ab0d068708 34 void setAddress(uint8_t address);
samux 1:80ab0d068708 35 void remoteWakeup(void);
samux 1:80ab0d068708 36
samux 1:80ab0d068708 37 /* Endpoint 0 */
samux 1:80ab0d068708 38 void EP0setup(uint8_t *buffer);
samux 1:80ab0d068708 39 void EP0read(void);
samux 1:80ab0d068708 40 uint32_t EP0getReadResult(uint8_t *buffer);
samux 1:80ab0d068708 41 void EP0write(uint8_t *buffer, uint32_t size);
samux 1:80ab0d068708 42 void EP0getWriteResult(void);
samux 1:80ab0d068708 43 void EP0stall(void);
samux 1:80ab0d068708 44
samux 1:80ab0d068708 45 /* Other endpoints */
samux 1:80ab0d068708 46 EP_STATUS endpointRead(uint8_t endpoint, uint32_t maximumSize);
samux 1:80ab0d068708 47 EP_STATUS endpointReadResult(uint8_t endpoint, uint8_t *data, uint32_t *bytesRead);
samux 1:80ab0d068708 48 EP_STATUS endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size);
samux 1:80ab0d068708 49 EP_STATUS endpointWriteResult(uint8_t endpoint);
samux 1:80ab0d068708 50 void stallEndpoint(uint8_t endpoint);
samux 1:80ab0d068708 51 void unstallEndpoint(uint8_t endpoint);
samux 1:80ab0d068708 52 bool realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t options);
samux 1:80ab0d068708 53 bool getEndpointStallState(unsigned char endpoint);
samux 1:80ab0d068708 54 uint32_t endpointReadcore(uint8_t endpoint, uint8_t *buffer);
samux 1:80ab0d068708 55
samux 1:80ab0d068708 56 protected:
samux 1:80ab0d068708 57 virtual void busReset(void){};
samux 1:80ab0d068708 58 virtual void EP0setupCallback(void){};
samux 1:80ab0d068708 59 virtual void EP0out(void){};
samux 1:80ab0d068708 60 virtual void EP0in(void){};
samux 1:80ab0d068708 61 virtual void connectStateChanged(unsigned int connected){};
samux 1:80ab0d068708 62 virtual void suspendStateChanged(unsigned int suspended){};
samux 1:80ab0d068708 63 virtual void SOF(int frameNumber){};
samux 1:80ab0d068708 64 virtual bool EP1_OUT_callback(){return false;};
samux 1:80ab0d068708 65 virtual bool EP1_IN_callback(){return false;};
samux 1:80ab0d068708 66 virtual bool EP2_OUT_callback(){return false;};
samux 1:80ab0d068708 67 virtual bool EP2_IN_callback(){return false;};
samux 1:80ab0d068708 68 virtual bool EP3_OUT_callback(){return false;};
samux 1:80ab0d068708 69 virtual bool EP3_IN_callback(){return false;};
samux 1:80ab0d068708 70
samux 1:80ab0d068708 71 private:
samux 1:80ab0d068708 72 void usbisr(void);
samux 1:80ab0d068708 73 static void _usbisr(void);
samux 1:80ab0d068708 74 static USBHAL * instance;
samux 1:80ab0d068708 75 };
samux 1:80ab0d068708 76 #endif
samux 1:80ab0d068708 77