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#include "stdint.h"
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#include "USBCDC.h"
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#include "USBBusInterface.h"
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#include "USBDevice.h"
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void USBCDC::attach(void (*fptr)(char*, int)) {
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cdc_evt = fptr;
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}
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USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
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cdc_evt = NULL;
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}
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bool USBCDC::EPBULK_OUT_callback() {
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uint8_t buf[64];
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uint16_t len;
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read(EPBULK_OUT, buf, &len, MAX_PACKET_SIZE_EPBULK);
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if (cdc_evt) {
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cdc_evt((char*)buf, len);
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}
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// We reactivate the endpoint to receive next characters
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readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
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return true;
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}
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bool USBCDC::USBCallback_request () {
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bool success = false;
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CONTROL_TRANSFER *transfer = getTransferPtr();
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// DBG("USBCallback_request: type %x, request %x\r\n", transfer->setup.bmRequestType.Type, transfer->setup.bRequest);
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/* Process standard requests */
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if ((transfer->setup.bmRequestType.Type == STANDARD_TYPE))
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{
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switch (transfer->setup.bRequest)
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{
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default:
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break;
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}
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}
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if (transfer->setup.bmRequestType.Type == CLASS_TYPE)
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{
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switch (transfer->setup.bRequest)
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{
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case 0x20: // CDC set line coding
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case 0x22: // CDC set control line state
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case 0x23: // CDC Alt-B
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// DBG("val=%x idx=%x len=%x\r\n", transfer->setup.wValue, transfer->setup.wIndex, transfer->setup.wLength);
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success = true;
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break;
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case 0x21: // CDC get line coding
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static uint8_t LineConfig[] = {0x00, 0xc0, 0x01, 0x00, 0, 0, 8};
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transfer->remaining = 7;
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transfer->ptr = LineConfig;
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transfer->direction = DEVICE_TO_HOST;
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success = true;
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break;
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default:
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break;
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}
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}
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return success;
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}
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bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) {
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// Called in ISR context
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// Set configuration. Return false if the
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// configuration is not supported.
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if (configuration != DEFAULT_CONFIGURATION) {
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return false;
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}
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addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
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// Configure endpoints > 0
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addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
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addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
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// We activate the endpoint to be able to receive data
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readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
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return true;
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}
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uint8_t * USBCDC::stringIinterfaceDesc() {
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static uint8_t stringIinterfaceDescriptor[] = {
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14, //bLength
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STRING_DESCRIPTOR, //bDescriptorType 0x03
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'C',0,'D',0,'C',0,'D',0,'E',0,'V',0 //bString iInterface - Audio
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};
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return stringIinterfaceDescriptor;
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}
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uint8_t * USBCDC::stringIproductDesc() {
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static uint8_t stringIproductDescriptor[] = {
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24, //bLength
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STRING_DESCRIPTOR, //bDescriptorType 0x03
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'M',0,'b',0,'e',0,'d',0,' ',0,'D',0,'e',0,'v',0,'i',0,'c',0,'e',0 //bString iProduct - Mbed Audio
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};
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return stringIproductDescriptor;
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}
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uint8_t * USBCDC::configurationDesc() {
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static uint8_t configDescriptor[] = {
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// configuration descriptor
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0x09, 0x02, 67, 0x00, 0x02, 0x01, 0x00, 0xC0, 0x32,
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// CDC
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// control class interface
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0x09, 0x04, 0x00, 0x00, 0x01, 0x02, 0x02, 0x01, 0x00,
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// header functional descriptor
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0x05, 0x24, 0x00, 0x10, 0x01,
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// call management functional descriptor
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0x05, 0x24, 0x01, 0x01, 0x01,
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121
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// ACM functional descriptor
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122
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0x04, 0x24, 0x02, 0x02,
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// union functional descriptor
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124
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0x05, 0x24, 0x06, 0x00, 0x01,
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// notification EP
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126
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0x07, 0x05, 0x81, 0x03, 0x10, 0x00, 0x0A,
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127
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// data class interface descriptor
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128
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0x09, 0x04, 0x01, 0x00, 0x02, 0x0A, 0x00, 0x00, 0x00,
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// data EP OUT
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0x07, 0x05, 0x02, 0x02, 0x40, 0x00, 0x00,
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// data EP IN
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0x07, 0x05, 0x82, 0x02, 0x40, 0x00, 0x00,
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};
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return configDescriptor;
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}
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uint8_t * USBCDC::deviceDesc() {
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static uint8_t deviceDescriptor[] = {
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DEVICE_DESCRIPTOR_LENGTH, /* bLength */
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140
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DEVICE_DESCRIPTOR, /* bDescriptorType */
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141
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LSB(0x01), /* bcdUSB (LSB) */
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142
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MSB(0x01), /* bcdUSB (MSB) */
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143
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0x02, /* bDeviceClass */
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0x00, /* bDeviceSubClass */
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145
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0x00, /* bDeviceprotocol */
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146
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MAX_PACKET_SIZE_EP0, /* bMaxPacketSize0 */
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147
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LSB(VENDOR_ID), /* idVendor (LSB) */
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148
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MSB(VENDOR_ID), /* idVendor (MSB) */
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149
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LSB(PRODUCT_ID), /* idProduct (LSB) */
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150
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MSB(PRODUCT_ID), /* idProduct (MSB) */
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151
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LSB(PRODUCT_RELEASE), /* bcdDevice (LSB) */
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152
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MSB(PRODUCT_RELEASE), /* bcdDevice (MSB) */
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153
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STRING_OFFSET_IMANUFACTURER, /* iManufacturer */
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154
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STRING_OFFSET_IPRODUCT, /* iProduct */
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155
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STRING_OFFSET_ISERIAL, /* iSerialNumber */
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156
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0x01 /* bNumConfigurations */
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157
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};
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return deviceDescriptor;
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}
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