c83ad53442
Introduce new USB Audio 2 implementation written from scratch. Main goal behind new implementation was to perform entity configuration with devicetree bindings, hiding the descriptor complexity from application. Initial implementation is working at Full-Speed only. High-Speed support will come later, but even at Full-Speed only this is viable replacement for old stack USB Audio 1 class (USB Audio 1 is limited to Full-Speed by specification, i.e. it is explicitly forbidden for USB Audio 1 device to work at High-Speed). Implemented is only absolute minimum set of features required for basic implicit and explicit feedback samples. Only one sample frequency is currently supported. Optional interrupt notifications are not supported. Signed-off-by: Tomasz Moń <tomasz.mon@nordicsemi.no>
104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
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* Copyright (c) 2023 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include <zephyr/device.h>
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#include <zephyr/usb/usbd.h>
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#include <zephyr/sys/iterable_sections.h>
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#include <zephyr/logging/log.h>
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LOG_MODULE_REGISTER(usbd_sample_config);
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#define ZEPHYR_PROJECT_USB_VID 0x2fe3
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USBD_DEVICE_DEFINE(sample_usbd,
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DEVICE_DT_GET(DT_NODELABEL(zephyr_udc0)),
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ZEPHYR_PROJECT_USB_VID, CONFIG_SAMPLE_USBD_PID);
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USBD_DESC_LANG_DEFINE(sample_lang);
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USBD_DESC_MANUFACTURER_DEFINE(sample_mfr, CONFIG_SAMPLE_USBD_MANUFACTURER);
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USBD_DESC_PRODUCT_DEFINE(sample_product, CONFIG_SAMPLE_USBD_PRODUCT);
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USBD_DESC_SERIAL_NUMBER_DEFINE(sample_sn, "0123456789ABCDEF");
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static const uint8_t attributes = (IS_ENABLED(CONFIG_SAMPLE_USBD_SELF_POWERED) ?
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USB_SCD_SELF_POWERED : 0) |
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(IS_ENABLED(CONFIG_SAMPLE_USBD_REMOTE_WAKEUP) ?
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USB_SCD_REMOTE_WAKEUP : 0);
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USBD_CONFIGURATION_DEFINE(sample_config,
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attributes,
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CONFIG_SAMPLE_USBD_MAX_POWER);
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struct usbd_contex *sample_usbd_init_device(void)
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{
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int err;
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err = usbd_add_descriptor(&sample_usbd, &sample_lang);
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if (err) {
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LOG_ERR("Failed to initialize language descriptor (%d)", err);
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return NULL;
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}
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err = usbd_add_descriptor(&sample_usbd, &sample_mfr);
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if (err) {
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LOG_ERR("Failed to initialize manufacturer descriptor (%d)", err);
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return NULL;
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}
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err = usbd_add_descriptor(&sample_usbd, &sample_product);
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if (err) {
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LOG_ERR("Failed to initialize product descriptor (%d)", err);
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return NULL;
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}
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err = usbd_add_descriptor(&sample_usbd, &sample_sn);
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if (err) {
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LOG_ERR("Failed to initialize SN descriptor (%d)", err);
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return NULL;
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}
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err = usbd_add_configuration(&sample_usbd, &sample_config);
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if (err) {
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LOG_ERR("Failed to add configuration (%d)", err);
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return NULL;
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}
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STRUCT_SECTION_FOREACH(usbd_class_node, node) {
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/* Pull everything that is enabled in our configuration. */
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err = usbd_register_class(&sample_usbd, node->name, 1);
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if (err) {
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LOG_ERR("Failed to register %s (%d)", node->name, err);
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return NULL;
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}
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LOG_DBG("Register %s", node->name);
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}
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/* Always use class code information from Interface Descriptors */
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if (IS_ENABLED(CONFIG_USBD_CDC_ACM_CLASS) ||
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IS_ENABLED(CONFIG_USBD_CDC_ECM_CLASS) ||
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IS_ENABLED(CONFIG_USBD_AUDIO2_CLASS)) {
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/*
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* Class with multiple interfaces have an Interface
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* Association Descriptor available, use an appropriate triple
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* to indicate it.
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*/
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usbd_device_set_code_triple(&sample_usbd,
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USB_BCC_MISCELLANEOUS, 0x02, 0x01);
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} else {
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usbd_device_set_code_triple(&sample_usbd, 0, 0, 0);
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}
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err = usbd_init(&sample_usbd);
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if (err) {
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LOG_ERR("Failed to initialize device support");
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return NULL;
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}
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return &sample_usbd;
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}
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