Hideharu Tsunemoto
USB device stack
Dependents: mbed_11U24_CapacitorDose_V001
Revision 72:ff90dd9ad449, committed 2019-11-22
- Comitter:
- H_Tsunemoto
- Date:
- Fri Nov 22 08:17:42 2019 +0000
- Parent:
- 71:53949e6131f6
- Commit message:
- CpaDose
Changed in this revision
--- a/USBAudio/USBAudio.cpp Thu Jul 27 12:14:04 2017 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,641 +0,0 @@
-/* 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.
-*/
-
-#include "stdint.h"
-#include "USBAudio.h"
-#include "USBAudio_Types.h"
-
-
-
-USBAudio::USBAudio(uint32_t frequency_in, uint8_t channel_nb_in, uint32_t frequency_out, uint8_t channel_nb_out, uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
- mute = 0;
- volCur = 0x0080;
- volMin = 0x0000;
- volMax = 0x0100;
- volRes = 0x0004;
- available = false;
-
- FREQ_IN = frequency_in;
- FREQ_OUT = frequency_out;
-
- this->channel_nb_in = channel_nb_in;
- this->channel_nb_out = channel_nb_out;
-
- // stereo -> *2, mono -> *1
- PACKET_SIZE_ISO_IN = (FREQ_IN / 500) * channel_nb_in;
- PACKET_SIZE_ISO_OUT = (FREQ_OUT / 500) * channel_nb_out;
-
- // STEREO -> left and right
- channel_config_in = (channel_nb_in == 1) ? CHANNEL_M : CHANNEL_L + CHANNEL_R;
- channel_config_out = (channel_nb_out == 1) ? CHANNEL_M : CHANNEL_L + CHANNEL_R;
-
- SOF_handler = false;
-
- buf_stream_out = NULL;
- buf_stream_in = NULL;
-
- interruptOUT = false;
- writeIN = false;
- interruptIN = false;
- available = false;
-
- volume = 0;
-
- // connect the device
- USBDevice::connect();
-}
-
-bool USBAudio::read(uint8_t * buf) {
- buf_stream_in = buf;
- SOF_handler = false;
- while (!available || !SOF_handler);
- available = false;
- return true;
-}
-
-bool USBAudio::readNB(uint8_t * buf) {
- buf_stream_in = buf;
- SOF_handler = false;
- while (!SOF_handler);
- if (available) {
- available = false;
- buf_stream_in = NULL;
- return true;
- }
- return false;
-}
-
-bool USBAudio::readWrite(uint8_t * buf_read, uint8_t * buf_write) {
- buf_stream_in = buf_read;
- SOF_handler = false;
- writeIN = false;
- if (interruptIN) {
- USBDevice::writeNB(EPISO_IN, buf_write, PACKET_SIZE_ISO_OUT, PACKET_SIZE_ISO_OUT);
- } else {
- buf_stream_out = buf_write;
- }
- while (!available);
- if (interruptIN) {
- while (!writeIN);
- }
- while (!SOF_handler);
- return true;
-}
-
-
-bool USBAudio::write(uint8_t * buf) {
- writeIN = false;
- SOF_handler = false;
- if (interruptIN) {
- USBDevice::writeNB(EPISO_IN, buf, PACKET_SIZE_ISO_OUT, PACKET_SIZE_ISO_OUT);
- } else {
- buf_stream_out = buf;
- }
- while (!SOF_handler);
- if (interruptIN) {
- while (!writeIN);
- }
- return true;
-}
-
-void USBAudio::writeSync(uint8_t *buf, AudioSampleCorrectType jitter_nb)
-{
- if ((jitter_nb != RemoveOneSample) && (jitter_nb != AddOneSample)) {
- jitter_nb = NoCorrection;
- }
- /* each sample is 2 bytes */
- USBDevice::writeNB(EPISO_IN, buf, PACKET_SIZE_ISO_OUT + jitter_nb *(this->channel_nb_out*2), PACKET_SIZE_ISO_OUT+this->channel_nb_out*2);
-}
-
-uint32_t USBAudio::readSync(uint8_t *buf)
-{
- uint32_t size = 0;
- USBDevice::readEP(EPISO_OUT, (uint8_t *)buf, &size, PACKET_SIZE_ISO_IN);
- return size;
-}
-
-float USBAudio::getVolume() {
- return (mute) ? 0.0 : volume;
-}
-
-
-bool USBAudio::EPISO_OUT_callback() {
- uint32_t size = 0;
- interruptOUT = true;
- if (buf_stream_in != NULL) {
- readEP(EPISO_OUT, (uint8_t *)buf_stream_in, &size, PACKET_SIZE_ISO_IN);
- available = true;
- buf_stream_in = NULL;
- }
- else {
- if (rxDone)
- rxDone.call();
- }
- readStart(EPISO_OUT, PACKET_SIZE_ISO_IN);
- return false;
-}
-
-
-bool USBAudio::EPISO_IN_callback() {
- interruptIN = true;
- writeIN = true;
- if (txDone)
- txDone.call();
- return true;
-}
-
-
-
-// Called in ISR context on each start of frame
-void USBAudio::SOF(int frameNumber) {
- uint32_t size = 0;
-
- if (!interruptOUT) {
- // read the isochronous endpoint
- if (buf_stream_in != NULL) {
- if (USBDevice::readEP_NB(EPISO_OUT, (uint8_t *)buf_stream_in, &size, PACKET_SIZE_ISO_IN)) {
- if (size) {
- available = true;
- readStart(EPISO_OUT, PACKET_SIZE_ISO_IN);
- buf_stream_in = NULL;
- }
- }
- }
- }
-
- if (!interruptIN) {
- // write if needed
- if (buf_stream_out != NULL) {
- USBDevice::writeNB(EPISO_IN, (uint8_t *)buf_stream_out, PACKET_SIZE_ISO_OUT, PACKET_SIZE_ISO_OUT);
- buf_stream_out = NULL;
- }
- }
-
- SOF_handler = true;
-}
-
-
-// Called in ISR context
-// Set configuration. Return false if the configuration is not supported.
-bool USBAudio::USBCallback_setConfiguration(uint8_t configuration) {
- if (configuration != DEFAULT_CONFIGURATION) {
- return false;
- }
-
- // Configure isochronous endpoint
- realiseEndpoint(EPISO_OUT, PACKET_SIZE_ISO_IN, ISOCHRONOUS);
- realiseEndpoint(EPISO_IN, PACKET_SIZE_ISO_OUT+this->channel_nb_out*2, ISOCHRONOUS);
-
- // activate readings on this endpoint
- readStart(EPISO_OUT, PACKET_SIZE_ISO_IN);
- return true;
-}
-
-
-// Called in ISR context
-// Set alternate setting. Return false if the alternate setting is not supported
-bool USBAudio::USBCallback_setInterface(uint16_t interface, uint8_t alternate) {
- if (interface == 0 && alternate == 0) {
- return true;
- }
- if (interface == 1 && (alternate == 0 || alternate == 1)) {
- return true;
- }
- if (interface == 2 && (alternate == 0 || alternate == 1)) {
- return true;
- }
- return false;
-}
-
-
-
-// Called in ISR context
-// Called by USBDevice on Endpoint0 request
-// This is used to handle extensions to standard requests and class specific requests.
-// Return true if class handles this request
-bool USBAudio::USBCallback_request() {
- bool success = false;
- CONTROL_TRANSFER * transfer = getTransferPtr();
-
- // Process class-specific requests
- if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
-
- // Feature Unit: Interface = 0, ID = 2
- if (transfer->setup.wIndex == 0x0200) {
-
- // Master Channel
- if ((transfer->setup.wValue & 0xff) == 0) {
-
- switch (transfer->setup.wValue >> 8) {
- case MUTE_CONTROL:
- switch (transfer->setup.bRequest) {
- case REQUEST_GET_CUR:
- transfer->remaining = 1;
- transfer->ptr = &mute;
- transfer->direction = DEVICE_TO_HOST;
- success = true;
- break;
-
- case REQUEST_SET_CUR:
- transfer->remaining = 1;
- transfer->notify = true;
- transfer->direction = HOST_TO_DEVICE;
- success = true;
- break;
- default:
- break;
- }
- break;
- case VOLUME_CONTROL:
- switch (transfer->setup.bRequest) {
- case REQUEST_GET_CUR:
- transfer->remaining = 2;
- transfer->ptr = (uint8_t *)&volCur;
- transfer->direction = DEVICE_TO_HOST;
- success = true;
- break;
- case REQUEST_GET_MIN:
- transfer->remaining = 2;
- transfer->ptr = (uint8_t *)&volMin;
- transfer->direction = DEVICE_TO_HOST;
- success = true;
- break;
- case REQUEST_GET_MAX:
- transfer->remaining = 2;
- transfer->ptr = (uint8_t *)&volMax;
- transfer->direction = DEVICE_TO_HOST;
- success = true;
- break;
- case REQUEST_GET_RES:
- transfer->remaining = 2;
- transfer->ptr = (uint8_t *)&volRes;
- transfer->direction = DEVICE_TO_HOST;
- success = true;
- break;
-
- case REQUEST_SET_CUR:
- transfer->remaining = 2;
- transfer->notify = true;
- transfer->direction = HOST_TO_DEVICE;
- success = true;
- break;
- case REQUEST_SET_MIN:
- transfer->remaining = 2;
- transfer->notify = true;
- transfer->direction = HOST_TO_DEVICE;
- success = true;
- break;
- case REQUEST_SET_MAX:
- transfer->remaining = 2;
- transfer->notify = true;
- transfer->direction = HOST_TO_DEVICE;
- success = true;
- break;
- case REQUEST_SET_RES:
- transfer->remaining = 2;
- transfer->notify = true;
- transfer->direction = HOST_TO_DEVICE;
- success = true;
- break;
- }
- break;
- default:
- break;
- }
- }
- }
- }
- return success;
-}
-
-
-// Called in ISR context when a data OUT stage has been performed
-void USBAudio::USBCallback_requestCompleted(uint8_t * buf, uint32_t length) {
- if ((length == 1) || (length == 2)) {
- uint16_t data = (length == 1) ? *buf : *((uint16_t *)buf);
- CONTROL_TRANSFER * transfer = getTransferPtr();
- switch (transfer->setup.wValue >> 8) {
- case MUTE_CONTROL:
- switch (transfer->setup.bRequest) {
- case REQUEST_SET_CUR:
- mute = data & 0xff;
- if (updateVol)
- updateVol.call();
- break;
- default:
- break;
- }
- break;
- case VOLUME_CONTROL:
- switch (transfer->setup.bRequest) {
- case REQUEST_SET_CUR:
- volCur = data;
- volume = (float)volCur/(float)volMax;
- if (updateVol)
- updateVol.call();
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
- }
-}
-
-
-
-#define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \
- + (5 * INTERFACE_DESCRIPTOR_LENGTH) \
- + (1 * CONTROL_INTERFACE_DESCRIPTOR_LENGTH + 1) \
- + (2 * INPUT_TERMINAL_DESCRIPTOR_LENGTH) \
- + (1 * FEATURE_UNIT_DESCRIPTOR_LENGTH) \
- + (2 * OUTPUT_TERMINAL_DESCRIPTOR_LENGTH) \
- + (2 * STREAMING_INTERFACE_DESCRIPTOR_LENGTH) \
- + (2 * FORMAT_TYPE_I_DESCRIPTOR_LENGTH) \
- + (2 * (ENDPOINT_DESCRIPTOR_LENGTH + 2)) \
- + (2 * STREAMING_ENDPOINT_DESCRIPTOR_LENGTH) )
-
-#define TOTAL_CONTROL_INTF_LENGTH (CONTROL_INTERFACE_DESCRIPTOR_LENGTH + 1 + \
- 2*INPUT_TERMINAL_DESCRIPTOR_LENGTH + \
- FEATURE_UNIT_DESCRIPTOR_LENGTH + \
- 2*OUTPUT_TERMINAL_DESCRIPTOR_LENGTH)
-
-uint8_t * USBAudio::configurationDesc() {
- static uint8_t configDescriptor[] = {
- // Configuration 1
- CONFIGURATION_DESCRIPTOR_LENGTH, // bLength
- CONFIGURATION_DESCRIPTOR, // bDescriptorType
- LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB)
- MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB)
- 0x03, // bNumInterfaces
- DEFAULT_CONFIGURATION, // bConfigurationValue
- 0x00, // iConfiguration
- 0x80, // bmAttributes
- 50, // bMaxPower
-
- // Interface 0, Alternate Setting 0, Audio Control
- INTERFACE_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR, // bDescriptorType
- 0x00, // bInterfaceNumber
- 0x00, // bAlternateSetting
- 0x00, // bNumEndpoints
- AUDIO_CLASS, // bInterfaceClass
- SUBCLASS_AUDIOCONTROL, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0x00, // iInterface
-
-
- // Audio Control Interface
- CONTROL_INTERFACE_DESCRIPTOR_LENGTH + 1,// bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- CONTROL_HEADER, // bDescriptorSubtype
- LSB(0x0100), // bcdADC (LSB)
- MSB(0x0100), // bcdADC (MSB)
- LSB(TOTAL_CONTROL_INTF_LENGTH), // wTotalLength
- MSB(TOTAL_CONTROL_INTF_LENGTH), // wTotalLength
- 0x02, // bInCollection
- 0x01, // baInterfaceNr
- 0x02, // baInterfaceNr
-
- // Audio Input Terminal (Speaker)
- INPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- CONTROL_INPUT_TERMINAL, // bDescriptorSubtype
- 0x01, // bTerminalID
- LSB(TERMINAL_USB_STREAMING), // wTerminalType
- MSB(TERMINAL_USB_STREAMING), // wTerminalType
- 0x00, // bAssocTerminal
- channel_nb_in, // bNrChannels
- (uint8_t)(LSB(channel_config_in)), // wChannelConfig
- (uint8_t)(MSB(channel_config_in)), // wChannelConfig
- 0x00, // iChannelNames
- 0x00, // iTerminal
-
- // Audio Feature Unit (Speaker)
- FEATURE_UNIT_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- CONTROL_FEATURE_UNIT, // bDescriptorSubtype
- 0x02, // bUnitID
- 0x01, // bSourceID
- 0x01, // bControlSize
- CONTROL_MUTE |
- CONTROL_VOLUME, // bmaControls(0)
- 0x00, // bmaControls(1)
- 0x00, // iTerminal
-
- // Audio Output Terminal (Speaker)
- OUTPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- CONTROL_OUTPUT_TERMINAL, // bDescriptorSubtype
- 0x03, // bTerminalID
- LSB(TERMINAL_SPEAKER), // wTerminalType
- MSB(TERMINAL_SPEAKER), // wTerminalType
- 0x00, // bAssocTerminal
- 0x02, // bSourceID
- 0x00, // iTerminal
-
-
- // Audio Input Terminal (Microphone)
- INPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- CONTROL_INPUT_TERMINAL, // bDescriptorSubtype
- 0x04, // bTerminalID
- LSB(TERMINAL_MICROPHONE), // wTerminalType
- MSB(TERMINAL_MICROPHONE), // wTerminalType
- 0x00, // bAssocTerminal
- channel_nb_out, // bNrChannels
- (uint8_t)(LSB(channel_config_out)), // wChannelConfig
- (uint8_t)(MSB(channel_config_out)), // wChannelConfig
- 0x00, // iChannelNames
- 0x00, // iTerminal
-
- // Audio Output Terminal (Microphone)
- OUTPUT_TERMINAL_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- CONTROL_OUTPUT_TERMINAL, // bDescriptorSubtype
- 0x05, // bTerminalID
- LSB(TERMINAL_USB_STREAMING), // wTerminalType
- MSB(TERMINAL_USB_STREAMING), // wTerminalType
- 0x00, // bAssocTerminal
- 0x04, // bSourceID
- 0x00, // iTerminal
-
-
-
-
-
-
- // Interface 1, Alternate Setting 0, Audio Streaming - Zero Bandwith
- INTERFACE_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR, // bDescriptorType
- 0x01, // bInterfaceNumber
- 0x00, // bAlternateSetting
- 0x00, // bNumEndpoints
- AUDIO_CLASS, // bInterfaceClass
- SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0x00, // iInterface
-
- // Interface 1, Alternate Setting 1, Audio Streaming - Operational
- INTERFACE_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR, // bDescriptorType
- 0x01, // bInterfaceNumber
- 0x01, // bAlternateSetting
- 0x01, // bNumEndpoints
- AUDIO_CLASS, // bInterfaceClass
- SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0x00, // iInterface
-
- // Audio Streaming Interface
- STREAMING_INTERFACE_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- STREAMING_GENERAL, // bDescriptorSubtype
- 0x01, // bTerminalLink
- 0x00, // bDelay
- LSB(FORMAT_PCM), // wFormatTag
- MSB(FORMAT_PCM), // wFormatTag
-
- // Audio Type I Format
- FORMAT_TYPE_I_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- STREAMING_FORMAT_TYPE, // bDescriptorSubtype
- FORMAT_TYPE_I, // bFormatType
- channel_nb_in, // bNrChannels
- 0x02, // bSubFrameSize
- 16, // bBitResolution
- 0x01, // bSamFreqType
- (uint8_t)(LSB(FREQ_IN)), // tSamFreq
- (uint8_t)((FREQ_IN >> 8) & 0xff), // tSamFreq
- (uint8_t)((FREQ_IN >> 16) & 0xff), // tSamFreq
-
- // Endpoint - Standard Descriptor
- ENDPOINT_DESCRIPTOR_LENGTH + 2, // bLength
- ENDPOINT_DESCRIPTOR, // bDescriptorType
- PHY_TO_DESC(EPISO_OUT), // bEndpointAddress
- E_ISOCHRONOUS, // bmAttributes
- (uint8_t)(LSB(PACKET_SIZE_ISO_IN)), // wMaxPacketSize
- (uint8_t)(MSB(PACKET_SIZE_ISO_IN)), // wMaxPacketSize
- 0x01, // bInterval
- 0x00, // bRefresh
- 0x00, // bSynchAddress
-
- // Endpoint - Audio Streaming
- STREAMING_ENDPOINT_DESCRIPTOR_LENGTH, // bLength
- ENDPOINT_DESCRIPTOR_TYPE, // bDescriptorType
- ENDPOINT_GENERAL, // bDescriptor
- 0x00, // bmAttributes
- 0x00, // bLockDelayUnits
- LSB(0x0000), // wLockDelay
- MSB(0x0000), // wLockDelay
-
-
-
-
-
-
-
- // Interface 1, Alternate Setting 0, Audio Streaming - Zero Bandwith
- INTERFACE_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR, // bDescriptorType
- 0x02, // bInterfaceNumber
- 0x00, // bAlternateSetting
- 0x00, // bNumEndpoints
- AUDIO_CLASS, // bInterfaceClass
- SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0x00, // iInterface
-
- // Interface 1, Alternate Setting 1, Audio Streaming - Operational
- INTERFACE_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR, // bDescriptorType
- 0x02, // bInterfaceNumber
- 0x01, // bAlternateSetting
- 0x01, // bNumEndpoints
- AUDIO_CLASS, // bInterfaceClass
- SUBCLASS_AUDIOSTREAMING, // bInterfaceSubClass
- 0x00, // bInterfaceProtocol
- 0x00, // iInterface
-
- // Audio Streaming Interface
- STREAMING_INTERFACE_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- SUBCLASS_AUDIOCONTROL, // bDescriptorSubtype
- 0x05, // bTerminalLink (output terminal microphone)
- 0x01, // bDelay
- 0x01, // wFormatTag
- 0x00, // wFormatTag
-
- // Audio Type I Format
- FORMAT_TYPE_I_DESCRIPTOR_LENGTH, // bLength
- INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType
- SUBCLASS_AUDIOSTREAMING, // bDescriptorSubtype
- FORMAT_TYPE_I, // bFormatType
- channel_nb_out, // bNrChannels
- 0x02, // bSubFrameSize
- 0x10, // bBitResolution
- 0x01, // bSamFreqType
- (uint8_t)(LSB(FREQ_OUT)), // tSamFreq
- (uint8_t)((FREQ_OUT >> 8) & 0xff), // tSamFreq
- (uint8_t)((FREQ_OUT >> 16) & 0xff), // tSamFreq
-
- // Endpoint - Standard Descriptor
- ENDPOINT_DESCRIPTOR_LENGTH + 2, // bLength
- ENDPOINT_DESCRIPTOR, // bDescriptorType
- PHY_TO_DESC(EPISO_IN), // bEndpointAddress
- E_ISOCHRONOUS, // bmAttributes
- (uint8_t)(LSB(PACKET_SIZE_ISO_OUT+channel_nb_out*2)), // wMaxPacketSize
- (uint8_t)(MSB(PACKET_SIZE_ISO_OUT+channel_nb_out*2)), // wMaxPacketSize
- 0x01, // bInterval
- 0x00, // bRefresh
- 0x00, // bSynchAddress
-
- // Endpoint - Audio Streaming
- STREAMING_ENDPOINT_DESCRIPTOR_LENGTH, // bLength
- ENDPOINT_DESCRIPTOR_TYPE, // bDescriptorType
- ENDPOINT_GENERAL, // bDescriptor
- 0x00, // bmAttributes
- 0x00, // bLockDelayUnits
- LSB(0x0000), // wLockDelay
- MSB(0x0000), // wLockDelay
-
- // Terminator
- 0 // bLength
- };
- return configDescriptor;
-}
-
-uint8_t * USBAudio::stringIinterfaceDesc() {
- static uint8_t stringIinterfaceDescriptor[] = {
- 0x0c, //bLength
- STRING_DESCRIPTOR, //bDescriptorType 0x03
- 'A',0,'u',0,'d',0,'i',0,'o',0 //bString iInterface - Audio
- };
- return stringIinterfaceDescriptor;
-}
-
-uint8_t * USBAudio::stringIproductDesc() {
- static uint8_t stringIproductDescriptor[] = {
- 0x16, //bLength
- STRING_DESCRIPTOR, //bDescriptorType 0x03
- 'M',0,'b',0,'e',0,'d',0,' ',0,'A',0,'u',0,'d',0,'i',0,'o',0 //bString iProduct - Mbed Audio
- };
- return stringIproductDescriptor;
-}
--- a/USBAudio/USBAudio.h Thu Jul 27 12:14:04 2017 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,337 +0,0 @@
-/* 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.
-*/
-
-#ifndef USBAudio_H
-#define USBAudio_H
-
-/* These headers are included for child class. */
-#include "USBEndpoints.h"
-#include "USBDescriptor.h"
-#include "USBDevice_Types.h"
-
-#include "USBDevice.h"
-#include "Callback.h"
-
-/**
-* USBAudio example
-*
-* @code
-* #include "mbed.h"
-* #include "USBAudio.h"
-*
-* Serial pc(USBTX, USBRX);
-*
-* // frequency: 48 kHz
-* #define FREQ 48000
-*
-* // 1 channel: mono
-* #define NB_CHA 1
-*
-* // length of an audio packet: each ms, we receive 48 * 16bits ->48 * 2 bytes. as there is one channel, the length will be 48 * 2 * 1
-* #define AUDIO_LENGTH_PACKET 48 * 2 * 1
-*
-* // USBAudio
-* USBAudio audio(FREQ, NB_CHA);
-*
-* int main() {
-* int16_t buf[AUDIO_LENGTH_PACKET/2];
-*
-* while (1) {
-* // read an audio packet
-* audio.read((uint8_t *)buf);
-*
-*
-* // print packet received
-* pc.printf("recv: ");
-* for(int i = 0; i < AUDIO_LENGTH_PACKET/2; i++) {
-* pc.printf("%d ", buf[i]);
-* }
-* pc.printf("\r\n");
-* }
-* }
-* @endcode
-*/
-class USBAudio: public USBDevice {
-public:
-
- /**
- * Constructor
- *
- * @param frequency_in frequency in Hz (default: 48000)
- * @param channel_nb_in channel number (1 or 2) (default: 1)
- * @param frequency_out frequency in Hz (default: 8000)
- * @param channel_nb_out_in channel number (1 or 2) (default: 1)
- * @param vendor_id Your vendor_id
- * @param product_id Your product_id
- * @param product_release Your preoduct_release
- */
- USBAudio(uint32_t frequency_in = 48000, uint8_t channel_nb_in = 1, uint32_t frequency_out = 8000, uint8_t channel_nb_out = 1, uint16_t vendor_id = 0x7bb8, uint16_t product_id = 0x1111, uint16_t product_release = 0x0100);
-
- /**
- * Get current volume between 0.0 and 1.0
- *
- * @returns volume
- */
- float getVolume();
-
- /**
- * Read an audio packet. During a frame, only a single reading (you can't write and read an audio packet during the same frame)can be done using this method. Warning: Blocking
- *
- * @param buf pointer on a buffer which will be filled with an audio packet
- *
- * @returns true if successfull
- */
- bool read(uint8_t * buf);
-
- /**
- * Try to read an audio packet. During a frame, only a single reading (you can't write and read an audio packet during the same frame)can be done using this method. Warning: Non Blocking
- *
- * @param buf pointer on a buffer which will be filled if an audio packet is available
- *
- * @returns true if successfull
- */
- bool readNB(uint8_t * buf);
-
- /**
- * read last received packet if some.
- * @param buf pointer on a buffer which will be filled if an audio packet is available
- *
- * @returns the packet length
- */
- uint32_t readSync(uint8_t *buf);
-
- /**
- * Write an audio packet. During a frame, only a single writing (you can't write and read an audio packet during the same frame)can be done using this method.
- *
- * @param buf pointer on the audio packet which will be sent
- * @returns true if successful
- */
- bool write(uint8_t * buf);
-
- /** Audio Jitter value*/
- enum AudioSampleCorrectType {
- RemoveOneSample = -1,
- NoCorrection = 0,
- AddOneSample = 1
- };
- /**
- * Write packet in endpoint fifo. assuming tx fifo is empty
- * @param buf pointer on the audio packet which will be sent
- * @param jitter_nb : AudioSampleCorrecttype
- **/
- void writeSync(uint8_t *buf, AudioSampleCorrectType jitter_nb = NoCorrection );
-
- /**
- * Write and read an audio packet at the same time (on the same frame)
- *
- * @param buf_read pointer on a buffer which will be filled with an audio packet
- * @param buf_write pointer on the audio packet which will be sent
- * @returns true if successful
- */
- bool readWrite(uint8_t * buf_read, uint8_t * buf_write);
-
-
- /** attach a handler to update the volume
- *
- * @param function Function to attach
- *
- */
- void attach(void(*fptr)(void)) {
- updateVol.attach(fptr);
- }
- /** attach a handler to Tx Done
- *
- * @param function Function to attach
- *
- */
- void attachTx(void(*fptr)(void)) {
- txDone.attach(fptr);
- }
- /** attach a handler to Rx Done
- *
- * @param function Function to attach
- *
- */
- void attachRx(void(*fptr)(void)) {
- rxDone.attach(fptr);
- }
-
- /** Attach a nonstatic void/void member function to update the volume
- *
- * @param tptr Object pointer
- * @param mptr Member function pointer
- *
- */
- template<typename T>
- void attach(T *tptr, void(T::*mptr)(void)) {
- updateVol.attach(tptr, mptr);
- }
- template<typename T>
- void attachTx(T *tptr, void(T::*mptr)(void)) {
- txDone.attach(tptr, mptr);
- }
- template<typename T>
- void attachRx(T *tptr, void(T::*mptr)(void)) {
- rxDone.attach(tptr, mptr);
- }
-
-
-protected:
-
- /*
- * Called by USBDevice layer. Set configuration of the device.
- * For instance, you can add all endpoints that you need on this function.
- *
- * @param configuration Number of the configuration
- * @returns true if class handles this request
- */
- virtual bool USBCallback_setConfiguration(uint8_t configuration);
-
- /*
- * Called by USBDevice on Endpoint0 request. Warning: Called in ISR context
- * This is used to handle extensions to standard requests
- * and class specific requests
- *
- * @returns true if class handles this request
- */
- virtual bool USBCallback_request();
-
- /*
- * Get string product descriptor
- *
- * @returns pointer to the string product descriptor
- */
- virtual uint8_t * stringIproductDesc();
-
- /*
- * Get string interface descriptor
- *
- * @returns pointer to the string interface descriptor
- */
- virtual uint8_t * stringIinterfaceDesc();
-
- /*
- * Get configuration descriptor
- *
- * @returns pointer to the configuration descriptor
- */
- virtual uint8_t * configurationDesc();
-
- /*
- * Called by USBDevice layer. Set interface/alternate of the device.
- *
- * @param interface Number of the interface to be configured
- * @param alternate Number of the alternate to be configured
- * @returns true if class handles this request
- */
- virtual bool USBCallback_setInterface(uint16_t interface, uint8_t alternate);
-
- /*
- * Called by USBDevice on Endpoint0 request completion
- * if the 'notify' flag has been set to true. Warning: Called in ISR context
- *
- * In this case it is used to indicate that a HID report has
- * been received from the host on endpoint 0
- *
- * @param buf buffer received on endpoint 0
- * @param length length of this buffer
- */
- virtual void USBCallback_requestCompleted(uint8_t * buf, uint32_t length);
-
- /*
- * Callback called on each Start of Frame event
- */
- virtual void SOF(int frameNumber);
-
- /*
- * Callback called when a packet is received
- */
- virtual bool EPISO_OUT_callback();
-
- /*
- * Callback called when a packet has been sent
- */
- virtual bool EPISO_IN_callback();
-
-private:
-
- // stream available ?
- volatile bool available;
-
- // interrupt OUT has been received
- volatile bool interruptOUT;
-
- // interrupt IN has been received
- volatile bool interruptIN;
-
- // audio packet has been written
- volatile bool writeIN;
-
- // FREQ
- uint32_t FREQ_OUT;
- uint32_t FREQ_IN;
-
- // size of the maximum packet for the isochronous endpoint
- uint32_t PACKET_SIZE_ISO_IN;
- uint32_t PACKET_SIZE_ISO_OUT;
-
- // mono, stereo,...
- uint8_t channel_nb_in;
- uint8_t channel_nb_out;
-
- // channel config: master, left, right
- uint8_t channel_config_in;
- uint8_t channel_config_out;
-
- // mute state
- uint8_t mute;
-
- // Volume Current Value
- uint16_t volCur;
-
- // Volume Minimum Value
- uint16_t volMin;
-
- // Volume Maximum Value
- uint16_t volMax;
-
- // Volume Resolution
- uint16_t volRes;
-
- // Buffer containing one audio packet (to be read)
- volatile uint8_t * buf_stream_in;
-
- // Buffer containing one audio packet (to be written)
- volatile uint8_t * buf_stream_out;
-
- // callback to update volume
- Callback<void()> updateVol;
-
- // callback transmit Done
- Callback<void()> txDone;
- // callback transmit Done
- Callback<void()> rxDone;
-
- // boolean showing that the SOF handler has been called. Useful for readNB.
- volatile bool SOF_handler;
-
- volatile float volume;
-
-};
-
-#endif
--- a/USBAudio/USBAudio_Types.h Thu Jul 27 12:14:04 2017 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,97 +0,0 @@ -/* 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. -*/ - -#ifndef USBAUDIO_TYPES_H -#define USBAUDIO_TYPES_H - - -#define DEFAULT_CONFIGURATION (1) - -// Audio Request Codes -#define REQUEST_SET_CUR 0x01 -#define REQUEST_GET_CUR 0x81 -#define REQUEST_SET_MIN 0x02 -#define REQUEST_GET_MIN 0x82 -#define REQUEST_SET_MAX 0x03 -#define REQUEST_GET_MAX 0x83 -#define REQUEST_SET_RES 0x04 -#define REQUEST_GET_RES 0x84 - -#define MUTE_CONTROL 0x01 -#define VOLUME_CONTROL 0x02 - - -// Audio Descriptor Sizes -#define CONTROL_INTERFACE_DESCRIPTOR_LENGTH 0x09 -#define STREAMING_INTERFACE_DESCRIPTOR_LENGTH 0x07 -#define INPUT_TERMINAL_DESCRIPTOR_LENGTH 0x0C -#define OUTPUT_TERMINAL_DESCRIPTOR_LENGTH 0x09 -#define FEATURE_UNIT_DESCRIPTOR_LENGTH 0x09 -#define STREAMING_ENDPOINT_DESCRIPTOR_LENGTH 0x07 - -// Audio Format Type Descriptor Sizes -#define FORMAT_TYPE_I_DESCRIPTOR_LENGTH 0x0b - -#define AUDIO_CLASS 0x01 -#define SUBCLASS_AUDIOCONTROL 0x01 -#define SUBCLASS_AUDIOSTREAMING 0x02 - -// Audio Descriptor Types -#define INTERFACE_DESCRIPTOR_TYPE 0x24 -#define ENDPOINT_DESCRIPTOR_TYPE 0x25 - -// Audio Control Interface Descriptor Subtypes -#define CONTROL_HEADER 0x01 -#define CONTROL_INPUT_TERMINAL 0x02 -#define CONTROL_OUTPUT_TERMINAL 0x03 -#define CONTROL_FEATURE_UNIT 0x06 - -// USB Terminal Types -#define TERMINAL_USB_STREAMING 0x0101 - -// Predefined Audio Channel Configuration Bits -// Mono -#define CHANNEL_M 0x0000 -#define CHANNEL_L 0x0001 /* Left Front */ -#define CHANNEL_R 0x0002 /* Right Front */ - -// Feature Unit Control Bits -#define CONTROL_MUTE 0x0001 -#define CONTROL_VOLUME 0x0002 - -// Input Terminal Types -#define TERMINAL_MICROPHONE 0x0201 - -// Output Terminal Types -#define TERMINAL_SPEAKER 0x0301 -#define TERMINAL_HEADPHONES 0x0302 - -// Audio Streaming Interface Descriptor Subtypes -#define STREAMING_GENERAL 0x01 -#define STREAMING_FORMAT_TYPE 0x02 - -// Audio Data Format Type I Codes -#define FORMAT_PCM 0x0001 - -// Audio Format Types -#define FORMAT_TYPE_I 0x01 - -// Audio Endpoint Descriptor Subtypes -#define ENDPOINT_GENERAL 0x01 - -#endif