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.

USBSerial/USBCDC.cpp@11:eeb3cbbaa996, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:13:36 2013 +0300
Revision:
11:eeb3cbbaa996
Parent:
8:335f2506f422
Child:
15:849c0c0f2769
Bug fixes, added suppor for LPC1347



Author: Samuel Mokrani

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 #include "stdint.h"
samux 1:80ab0d068708 20 #include "USBCDC.h"
samux 1:80ab0d068708 21
samux 1:80ab0d068708 22 static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08};
samux 1:80ab0d068708 23
samux 1:80ab0d068708 24 #define DEFAULT_CONFIGURATION (1)
samux 1:80ab0d068708 25
samux 1:80ab0d068708 26 #define CDC_SET_LINE_CODING 0x20
samux 1:80ab0d068708 27 #define CDC_GET_LINE_CODING 0x21
samux 1:80ab0d068708 28 #define CDC_SET_CONTROL_LINE_STATE 0x22
samux 1:80ab0d068708 29
samux 1:80ab0d068708 30 #define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK
samux 1:80ab0d068708 31
samux 1:80ab0d068708 32 USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
samux 6:d0945750af57 33 terminal_connected = false;
samux 1:80ab0d068708 34 USBDevice::connect();
samux 1:80ab0d068708 35 }
samux 1:80ab0d068708 36
samux 1:80ab0d068708 37 bool USBCDC::USBCallback_request(void) {
samux 1:80ab0d068708 38 /* Called in ISR context */
samux 1:80ab0d068708 39
samux 1:80ab0d068708 40 bool success = false;
samux 1:80ab0d068708 41 CONTROL_TRANSFER * transfer = getTransferPtr();
samux 1:80ab0d068708 42
samux 1:80ab0d068708 43 /* Process class-specific requests */
samux 1:80ab0d068708 44
samux 1:80ab0d068708 45 if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
samux 1:80ab0d068708 46 switch (transfer->setup.bRequest) {
samux 1:80ab0d068708 47 case CDC_GET_LINE_CODING:
samux 1:80ab0d068708 48 transfer->remaining = 7;
samux 1:80ab0d068708 49 transfer->ptr = cdc_line_coding;
samux 1:80ab0d068708 50 transfer->direction = DEVICE_TO_HOST;
samux 1:80ab0d068708 51 success = true;
samux 1:80ab0d068708 52 break;
samux 1:80ab0d068708 53 case CDC_SET_LINE_CODING:
samux 1:80ab0d068708 54 transfer->remaining = 7;
samux 1:80ab0d068708 55 success = true;
samux 6:d0945750af57 56 terminal_connected = true;
samux 1:80ab0d068708 57 break;
samux 1:80ab0d068708 58 case CDC_SET_CONTROL_LINE_STATE:
samux 8:335f2506f422 59 terminal_connected = false;
samux 1:80ab0d068708 60 success = true;
samux 1:80ab0d068708 61 break;
samux 1:80ab0d068708 62 default:
samux 1:80ab0d068708 63 break;
samux 1:80ab0d068708 64 }
samux 1:80ab0d068708 65 }
samux 1:80ab0d068708 66
samux 1:80ab0d068708 67 return success;
samux 1:80ab0d068708 68 }
samux 1:80ab0d068708 69
samux 1:80ab0d068708 70
samux 1:80ab0d068708 71 // Called in ISR context
samux 1:80ab0d068708 72 // Set configuration. Return false if the
samux 1:80ab0d068708 73 // configuration is not supported.
samux 1:80ab0d068708 74 bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) {
samux 1:80ab0d068708 75 if (configuration != DEFAULT_CONFIGURATION) {
samux 1:80ab0d068708 76 return false;
samux 1:80ab0d068708 77 }
samux 1:80ab0d068708 78
samux 1:80ab0d068708 79 // Configure endpoints > 0
samux 1:80ab0d068708 80 addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
samux 1:80ab0d068708 81 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 82 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 83
samux 1:80ab0d068708 84 // We activate the endpoint to be able to recceive data
samux 1:80ab0d068708 85 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux 1:80ab0d068708 86 return true;
samux 1:80ab0d068708 87 }
samux 1:80ab0d068708 88
samux 1:80ab0d068708 89 bool USBCDC::send(uint8_t * buffer, uint32_t size) {
samux 1:80ab0d068708 90 return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE);
samux 1:80ab0d068708 91 }
samux 1:80ab0d068708 92
samux 1:80ab0d068708 93 bool USBCDC::readEP(uint8_t * buffer, uint32_t * size) {
samux 1:80ab0d068708 94 if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
samux 1:80ab0d068708 95 return false;
samux 1:80ab0d068708 96 if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
samux 1:80ab0d068708 97 return false;
samux 1:80ab0d068708 98 return true;
samux 1:80ab0d068708 99 }
samux 1:80ab0d068708 100
samux 1:80ab0d068708 101 bool USBCDC::readEP_NB(uint8_t * buffer, uint32_t * size) {
samux 1:80ab0d068708 102 if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
samux 1:80ab0d068708 103 return false;
samux 1:80ab0d068708 104 if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
samux 1:80ab0d068708 105 return false;
samux 1:80ab0d068708 106 return true;
samux 1:80ab0d068708 107 }
samux 1:80ab0d068708 108
samux 1:80ab0d068708 109
samux 1:80ab0d068708 110 uint8_t * USBCDC::deviceDesc() {
samux 1:80ab0d068708 111 static uint8_t deviceDescriptor[] = {
samux 1:80ab0d068708 112 18, // bLength
samux 1:80ab0d068708 113 1, // bDescriptorType
samux 1:80ab0d068708 114 0x10, 0x01, // bcdUSB
samux 1:80ab0d068708 115 2, // bDeviceClass
samux 1:80ab0d068708 116 0, // bDeviceSubClass
samux 1:80ab0d068708 117 0, // bDeviceProtocol
samux 1:80ab0d068708 118 MAX_PACKET_SIZE_EP0, // bMaxPacketSize0
bogdanm 11:eeb3cbbaa996 119 (uint8_t)(LSB(VENDOR_ID)), (uint8_t)(MSB(VENDOR_ID)), // idVendor
bogdanm 11:eeb3cbbaa996 120 (uint8_t)(LSB(PRODUCT_ID)), (uint8_t)(MSB(PRODUCT_ID)),// idProduct
samux 1:80ab0d068708 121 0x00, 0x01, // bcdDevice
samux 1:80ab0d068708 122 1, // iManufacturer
samux 1:80ab0d068708 123 2, // iProduct
samux 1:80ab0d068708 124 3, // iSerialNumber
samux 1:80ab0d068708 125 1 // bNumConfigurations
samux 1:80ab0d068708 126 };
samux 1:80ab0d068708 127 return deviceDescriptor;
samux 1:80ab0d068708 128 }
samux 1:80ab0d068708 129
samux 1:80ab0d068708 130 uint8_t * USBCDC::stringIinterfaceDesc() {
samux 1:80ab0d068708 131 static uint8_t stringIinterfaceDescriptor[] = {
samux 1:80ab0d068708 132 0x08,
samux 1:80ab0d068708 133 STRING_DESCRIPTOR,
samux 1:80ab0d068708 134 'C',0,'D',0,'C',0,
samux 1:80ab0d068708 135 };
samux 1:80ab0d068708 136 return stringIinterfaceDescriptor;
samux 1:80ab0d068708 137 }
samux 1:80ab0d068708 138
samux 1:80ab0d068708 139 uint8_t * USBCDC::stringIproductDesc() {
samux 1:80ab0d068708 140 static uint8_t stringIproductDescriptor[] = {
samux 1:80ab0d068708 141 0x16,
samux 1:80ab0d068708 142 STRING_DESCRIPTOR,
samux 1:80ab0d068708 143 'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0
samux 1:80ab0d068708 144 };
samux 1:80ab0d068708 145 return stringIproductDescriptor;
samux 1:80ab0d068708 146 }
samux 1:80ab0d068708 147
samux 1:80ab0d068708 148
samux 8:335f2506f422 149 #define CONFIG1_DESC_SIZE (9+8+9+5+5+4+5+7+9+7+7)
samux 1:80ab0d068708 150
samux 1:80ab0d068708 151 uint8_t * USBCDC::configurationDesc() {
samux 1:80ab0d068708 152 static uint8_t configDescriptor[] = {
samux 8:335f2506f422 153 // configuration descriptor
samux 8:335f2506f422 154 9, // bLength
samux 8:335f2506f422 155 2, // bDescriptorType
samux 1:80ab0d068708 156 LSB(CONFIG1_DESC_SIZE), // wTotalLength
samux 1:80ab0d068708 157 MSB(CONFIG1_DESC_SIZE),
samux 1:80ab0d068708 158 2, // bNumInterfaces
samux 1:80ab0d068708 159 1, // bConfigurationValue
samux 1:80ab0d068708 160 0, // iConfiguration
samux 1:80ab0d068708 161 0x80, // bmAttributes
samux 1:80ab0d068708 162 50, // bMaxPower
samux 8:335f2506f422 163
samux 8:335f2506f422 164 // IAD to associate the two CDC interfaces
samux 8:335f2506f422 165 0x08, // bLength
samux 8:335f2506f422 166 0x0b, // bDescriptorType
samux 8:335f2506f422 167 0x00, // bFirstInterface
samux 8:335f2506f422 168 0x02, // bInterfaceCount
samux 8:335f2506f422 169 0x02, // bFunctionClass
samux 8:335f2506f422 170 0x02, // bFunctionSubClass
samux 8:335f2506f422 171 0, // bFunctionProtocol
samux 8:335f2506f422 172 0, // iFunction
samux 1:80ab0d068708 173
samux 1:80ab0d068708 174 // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
samux 1:80ab0d068708 175 9, // bLength
samux 1:80ab0d068708 176 4, // bDescriptorType
samux 1:80ab0d068708 177 0, // bInterfaceNumber
samux 1:80ab0d068708 178 0, // bAlternateSetting
samux 1:80ab0d068708 179 1, // bNumEndpoints
samux 1:80ab0d068708 180 0x02, // bInterfaceClass
samux 1:80ab0d068708 181 0x02, // bInterfaceSubClass
samux 1:80ab0d068708 182 0x01, // bInterfaceProtocol
samux 1:80ab0d068708 183 0, // iInterface
samux 1:80ab0d068708 184
samux 1:80ab0d068708 185 // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
samux 1:80ab0d068708 186 5, // bFunctionLength
samux 1:80ab0d068708 187 0x24, // bDescriptorType
samux 1:80ab0d068708 188 0x00, // bDescriptorSubtype
samux 1:80ab0d068708 189 0x10, 0x01, // bcdCDC
samux 1:80ab0d068708 190
samux 1:80ab0d068708 191 // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
samux 1:80ab0d068708 192 5, // bFunctionLength
samux 1:80ab0d068708 193 0x24, // bDescriptorType
samux 1:80ab0d068708 194 0x01, // bDescriptorSubtype
samux 1:80ab0d068708 195 0x03, // bmCapabilities
samux 1:80ab0d068708 196 1, // bDataInterface
samux 1:80ab0d068708 197
samux 1:80ab0d068708 198 // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
samux 1:80ab0d068708 199 4, // bFunctionLength
samux 1:80ab0d068708 200 0x24, // bDescriptorType
samux 1:80ab0d068708 201 0x02, // bDescriptorSubtype
samux 1:80ab0d068708 202 0x06, // bmCapabilities
samux 1:80ab0d068708 203
samux 1:80ab0d068708 204 // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
samux 1:80ab0d068708 205 5, // bFunctionLength
samux 1:80ab0d068708 206 0x24, // bDescriptorType
samux 1:80ab0d068708 207 0x06, // bDescriptorSubtype
samux 1:80ab0d068708 208 0, // bMasterInterface
samux 1:80ab0d068708 209 1, // bSlaveInterface0
samux 1:80ab0d068708 210
samux 1:80ab0d068708 211 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
samux 1:80ab0d068708 212 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
samux 1:80ab0d068708 213 ENDPOINT_DESCRIPTOR, // bDescriptorType
samux 1:80ab0d068708 214 PHY_TO_DESC(EPINT_IN), // bEndpointAddress
samux 1:80ab0d068708 215 E_INTERRUPT, // bmAttributes (0x03=intr)
samux 1:80ab0d068708 216 LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
samux 1:80ab0d068708 217 MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
samux 1:80ab0d068708 218 16, // bInterval
samux 1:80ab0d068708 219
samux 1:80ab0d068708 220
samux 1:80ab0d068708 221
samux 1:80ab0d068708 222
samux 1:80ab0d068708 223 // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
samux 8:335f2506f422 224 9, // bLength
samux 8:335f2506f422 225 4, // bDescriptorType
samux 8:335f2506f422 226 1, // bInterfaceNumber
samux 8:335f2506f422 227 0, // bAlternateSetting
samux 8:335f2506f422 228 2, // bNumEndpoints
samux 8:335f2506f422 229 0x0A, // bInterfaceClass
samux 8:335f2506f422 230 0x00, // bInterfaceSubClass
samux 8:335f2506f422 231 0x00, // bInterfaceProtocol
samux 8:335f2506f422 232 0, // iInterface
samux 1:80ab0d068708 233
samux 1:80ab0d068708 234 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
samux 8:335f2506f422 235 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
samux 8:335f2506f422 236 ENDPOINT_DESCRIPTOR, // bDescriptorType
samux 8:335f2506f422 237 PHY_TO_DESC(EPBULK_IN), // bEndpointAddress
samux 8:335f2506f422 238 E_BULK, // bmAttributes (0x02=bulk)
samux 8:335f2506f422 239 LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
samux 8:335f2506f422 240 MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
samux 8:335f2506f422 241 0, // bInterval
samux 1:80ab0d068708 242
samux 1:80ab0d068708 243 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
samux 8:335f2506f422 244 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
samux 8:335f2506f422 245 ENDPOINT_DESCRIPTOR, // bDescriptorType
samux 8:335f2506f422 246 PHY_TO_DESC(EPBULK_OUT), // bEndpointAddress
samux 8:335f2506f422 247 E_BULK, // bmAttributes (0x02=bulk)
samux 8:335f2506f422 248 LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
samux 8:335f2506f422 249 MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
samux 8:335f2506f422 250 0 // bInterval
samux 1:80ab0d068708 251 };
samux 1:80ab0d068708 252 return configDescriptor;
samux 1:80ab0d068708 253 }