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.

USBHID/USBKeyboard.h@24:4ed3e25c3edc, 2014-03-30 (annotated)

Committer:
tolaipner
Date:
Sun Mar 30 07:30:18 2014 +0000
Revision:
24:4ed3e25c3edc
Parent:
1:80ab0d068708 
Added Nucleo F401RE support

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 USBKEYBOARD_H
samux 1:80ab0d068708 20 #define USBKEYBOARD_H
samux 1:80ab0d068708 21
samux 1:80ab0d068708 22 #include "USBHID.h"
samux 1:80ab0d068708 23 #include "Stream.h"
samux 1:80ab0d068708 24
samux 1:80ab0d068708 25 /* Modifiers */
samux 1:80ab0d068708 26 enum MODIFIER_KEY {
samux 1:80ab0d068708 27 KEY_CTRL = 1,
samux 1:80ab0d068708 28 KEY_SHIFT = 2,
samux 1:80ab0d068708 29 KEY_ALT = 4,
samux 1:80ab0d068708 30 };
samux 1:80ab0d068708 31
samux 1:80ab0d068708 32
samux 1:80ab0d068708 33 enum MEDIA_KEY {
samux 1:80ab0d068708 34 KEY_NEXT_TRACK, /*!< next Track Button */
samux 1:80ab0d068708 35 KEY_PREVIOUS_TRACK, /*!< Previous track Button */
samux 1:80ab0d068708 36 KEY_STOP, /*!< Stop Button */
samux 1:80ab0d068708 37 KEY_PLAY_PAUSE, /*!< Play/Pause Button */
samux 1:80ab0d068708 38 KEY_MUTE, /*!< Mute Button */
samux 1:80ab0d068708 39 KEY_VOLUME_UP, /*!< Volume Up Button */
samux 1:80ab0d068708 40 KEY_VOLUME_DOWN, /*!< Volume Down Button */
samux 1:80ab0d068708 41 };
samux 1:80ab0d068708 42
samux 1:80ab0d068708 43 enum FUNCTION_KEY {
samux 1:80ab0d068708 44 KEY_F1 = 128, /* F1 key */
samux 1:80ab0d068708 45 KEY_F2, /* F2 key */
samux 1:80ab0d068708 46 KEY_F3, /* F3 key */
samux 1:80ab0d068708 47 KEY_F4, /* F4 key */
samux 1:80ab0d068708 48 KEY_F5, /* F5 key */
samux 1:80ab0d068708 49 KEY_F6, /* F6 key */
samux 1:80ab0d068708 50 KEY_F7, /* F7 key */
samux 1:80ab0d068708 51 KEY_F8, /* F8 key */
samux 1:80ab0d068708 52 KEY_F9, /* F9 key */
samux 1:80ab0d068708 53 KEY_F10, /* F10 key */
samux 1:80ab0d068708 54 KEY_F11, /* F11 key */
samux 1:80ab0d068708 55 KEY_F12, /* F12 key */
samux 1:80ab0d068708 56
samux 1:80ab0d068708 57 KEY_PRINT_SCREEN, /* Print Screen key */
samux 1:80ab0d068708 58 KEY_SCROLL_LOCK, /* Scroll lock */
samux 1:80ab0d068708 59 KEY_CAPS_LOCK, /* caps lock */
samux 1:80ab0d068708 60 KEY_NUM_LOCK, /* num lock */
samux 1:80ab0d068708 61 KEY_INSERT, /* Insert key */
samux 1:80ab0d068708 62 KEY_HOME, /* Home key */
samux 1:80ab0d068708 63 KEY_PAGE_UP, /* Page Up key */
samux 1:80ab0d068708 64 KEY_PAGE_DOWN, /* Page Down key */
samux 1:80ab0d068708 65
samux 1:80ab0d068708 66 RIGHT_ARROW, /* Right arrow */
samux 1:80ab0d068708 67 LEFT_ARROW, /* Left arrow */
samux 1:80ab0d068708 68 DOWN_ARROW, /* Down arrow */
samux 1:80ab0d068708 69 UP_ARROW, /* Up arrow */
samux 1:80ab0d068708 70 };
samux 1:80ab0d068708 71
samux 1:80ab0d068708 72 /**
samux 1:80ab0d068708 73 * USBKeyboard example
samux 1:80ab0d068708 74 * @code
samux 1:80ab0d068708 75 *
samux 1:80ab0d068708 76 * #include "mbed.h"
samux 1:80ab0d068708 77 * #include "USBKeyboard.h"
samux 1:80ab0d068708 78 *
samux 1:80ab0d068708 79 * USBKeyboard key;
samux 1:80ab0d068708 80 *
samux 1:80ab0d068708 81 * int main(void)
samux 1:80ab0d068708 82 * {
samux 1:80ab0d068708 83 * while (1)
samux 1:80ab0d068708 84 * {
samux 1:80ab0d068708 85 * key.printf("Hello World\r\n");
samux 1:80ab0d068708 86 * wait(1);
samux 1:80ab0d068708 87 * }
samux 1:80ab0d068708 88 * }
samux 1:80ab0d068708 89 *
samux 1:80ab0d068708 90 * @endcode
samux 1:80ab0d068708 91 */
samux 1:80ab0d068708 92 class USBKeyboard: public USBHID, public Stream {
samux 1:80ab0d068708 93 public:
samux 1:80ab0d068708 94
samux 1:80ab0d068708 95 /**
samux 1:80ab0d068708 96 * Constructor
samux 1:80ab0d068708 97 *
samux 1:80ab0d068708 98 *
samux 1:80ab0d068708 99 * @param leds Leds bus: first: NUM_LOCK, second: CAPS_LOCK, third: SCROLL_LOCK
samux 1:80ab0d068708 100 * @param vendor_id Your vendor_id (default: 0x1235)
samux 1:80ab0d068708 101 * @param product_id Your product_id (default: 0x0050)
samux 1:80ab0d068708 102 * @param product_release Your preoduct_release (default: 0x0001)
samux 1:80ab0d068708 103 *
samux 1:80ab0d068708 104 */
samux 1:80ab0d068708 105 USBKeyboard(uint16_t vendor_id = 0x1235, uint16_t product_id = 0x0050, uint16_t product_release = 0x0001):
samux 1:80ab0d068708 106 USBHID(0, 0, vendor_id, product_id, product_release, false) {
samux 1:80ab0d068708 107 lock_status = 0;
samux 1:80ab0d068708 108 connect();
samux 1:80ab0d068708 109 };
samux 1:80ab0d068708 110
samux 1:80ab0d068708 111 /**
samux 1:80ab0d068708 112 * To send a character defined by a modifier(CTRL, SHIFT, ALT) and the key
samux 1:80ab0d068708 113 *
samux 1:80ab0d068708 114 * @code
samux 1:80ab0d068708 115 * //To send CTRL + s (save)
samux 1:80ab0d068708 116 * keyboard.keyCode('s', KEY_CTRL);
samux 1:80ab0d068708 117 * @endcode
samux 1:80ab0d068708 118 *
samux 1:80ab0d068708 119 * @param modifier bit 0: KEY_CTRL, bit 1: KEY_SHIFT, bit 2: KEY_ALT (default: 0)
samux 1:80ab0d068708 120 * @param key character to send
samux 1:80ab0d068708 121 * @returns true if there is no error, false otherwise
samux 1:80ab0d068708 122 */
samux 1:80ab0d068708 123 bool keyCode(uint8_t key, uint8_t modifier = 0);
samux 1:80ab0d068708 124
samux 1:80ab0d068708 125 /**
samux 1:80ab0d068708 126 * Send a character
samux 1:80ab0d068708 127 *
samux 1:80ab0d068708 128 * @param c character to be sent
samux 1:80ab0d068708 129 * @returns true if there is no error, false otherwise
samux 1:80ab0d068708 130 */
samux 1:80ab0d068708 131 virtual int _putc(int c);
samux 1:80ab0d068708 132
samux 1:80ab0d068708 133 /**
samux 1:80ab0d068708 134 * Control media keys
samux 1:80ab0d068708 135 *
samux 1:80ab0d068708 136 * @param key media key pressed (KEY_NEXT_TRACK, KEY_PREVIOUS_TRACK, KEY_STOP, KEY_PLAY_PAUSE, KEY_MUTE, KEY_VOLUME_UP, KEY_VOLUME_DOWN)
samux 1:80ab0d068708 137 * @returns true if there is no error, false otherwise
samux 1:80ab0d068708 138 */
samux 1:80ab0d068708 139 bool mediaControl(MEDIA_KEY key);
samux 1:80ab0d068708 140
samux 1:80ab0d068708 141 /*
samux 1:80ab0d068708 142 * To define the report descriptor. Warning: this method has to store the length of the report descriptor in reportLength.
samux 1:80ab0d068708 143 *
samux 1:80ab0d068708 144 * @returns pointer to the report descriptor
samux 1:80ab0d068708 145 */
samux 1:80ab0d068708 146 virtual uint8_t * reportDesc();
samux 1:80ab0d068708 147
samux 1:80ab0d068708 148 /*
samux 1:80ab0d068708 149 * Called when a data is received on the OUT endpoint. Useful to switch on LED of LOCK keys
samux 1:80ab0d068708 150 *
samux 1:80ab0d068708 151 * @returns if handle by subclass, return true
samux 1:80ab0d068708 152 */
samux 1:80ab0d068708 153 virtual bool EP1_OUT_callback();
samux 1:80ab0d068708 154
samux 1:80ab0d068708 155 /**
samux 1:80ab0d068708 156 * Read status of lock keys. Useful to switch-on/off leds according to key pressed. Only the first three bits of the result is important:
samux 1:80ab0d068708 157 * - First bit: NUM_LOCK
samux 1:80ab0d068708 158 * - Second bit: CAPS_LOCK
samux 1:80ab0d068708 159 * - Third bit: SCROLL_LOCK
samux 1:80ab0d068708 160 *
samux 1:80ab0d068708 161 * @returns status of lock keys
samux 1:80ab0d068708 162 */
samux 1:80ab0d068708 163 uint8_t lockStatus();
samux 1:80ab0d068708 164
samux 1:80ab0d068708 165 protected:
samux 1:80ab0d068708 166 /*
samux 1:80ab0d068708 167 * Get configuration descriptor
samux 1:80ab0d068708 168 *
samux 1:80ab0d068708 169 * @returns pointer to the configuration descriptor
samux 1:80ab0d068708 170 */
samux 1:80ab0d068708 171 virtual uint8_t * configurationDesc();
samux 1:80ab0d068708 172
samux 1:80ab0d068708 173 private:
samux 1:80ab0d068708 174 //dummy otherwise it doesn,t compile (we must define all methods of an abstract class)
samux 1:80ab0d068708 175 virtual int _getc() {
samux 1:80ab0d068708 176 return -1;
samux 1:80ab0d068708 177 };
samux 1:80ab0d068708 178
samux 1:80ab0d068708 179 uint8_t lock_status;
samux 1:80ab0d068708 180
samux 1:80ab0d068708 181 };
samux 1:80ab0d068708 182
samux 1:80ab0d068708 183 #endif