docs: update rst
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@@ -187,6 +187,7 @@ USB basic concepts and how the CherryUSB Device stack is implemented, see [Cherr
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|Artinchip | d12x/d13x/d21x | aic/ehci/ohci |[luban-lite](https://gitee.com/artinchip/luban-lite)|<= latest | Long-term |
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|Espressif | esp32s2/esp32s3/esp32p4 | dwc2 |[esp32_repo](https://github.com/CherryUSB/cherryusb_esp32)|<= latest | Long-term |
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|NXP | mcx | kinetis/chipidea/ehci |[nxp_mcx_repo](https://github.com/CherryUSB/cherryusb_mcx)|<= latest | Long-term |
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|Kendryte | k230 | dwc2 |[k230_repo](https://github.com/CherryUSB/canmv_k230)|v1.2.0 | Long-term |
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|AllwinnerTech | F1C100S/F1C200S | musb |[cherryusb_rtt_f1c100s](https://github.com/CherryUSB/cherryusb_rtt_f1c100s)|<= latest | the same with musb |
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|Bekencorp | bk7256/bk7258 | musb |[bk_idk](https://github.com/CherryUSB/bk_idk)| v0.7.0 | the same with musb |
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|Sophgo | cv18xx | dwc2 |[cvi_alios_open](https://github.com/CherryUSB/cvi_alios_open)| v0.7.0 | TBD |
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@@ -188,6 +188,7 @@ CherryUSB 快速入门、USB 基本概念,API 手册,Class 基本概念和
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|Artinchip | d12x/d13x/d21x | aic/ehci/ohci |[luban-lite](https://gitee.com/artinchip/luban-lite)|<= latest | Long-term |
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|Espressif | esp32s2/esp32s3/esp32p4 | dwc2 |[esp32_repo](https://github.com/CherryUSB/cherryusb_esp32)|<= latest | Long-term |
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|NXP | mcx | kinetis/chipidea/ehci |[nxp_mcx_repo](https://github.com/CherryUSB/cherryusb_mcx)|<= latest | Long-term |
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|Kendryte | k230 | dwc2 |[k230_repo](https://github.com/CherryUSB/canmv_k230)|v1.2.0 | Long-term |
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|AllwinnerTech | F1C100S/F1C200S | musb |[cherryusb_rtt_f1c100s](https://github.com/CherryUSB/cherryusb_rtt_f1c100s)|<= latest | the same with musb |
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|Bekencorp | bk7256/bk7258 | musb |[bk_idk](https://github.com/CherryUSB/bk_idk)| v0.7.0 | the same with musb |
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|Sophgo | cv18xx | dwc2 |[cvi_alios_open](https://github.com/CherryUSB/cvi_alios_open)| v0.7.0 | TBD |
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@@ -1,2 +1,21 @@
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usbd_webusb
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===============
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本 demo 主要演示 webusb 功能,webusb 主要用于弹出网页并对 USB 设备进行访问。示例使用 webusb_hid_template.c。
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- 在注册描述符时注册 BOS, MSOSV2, WEBUSB 描述符即可。
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.. code-block:: C
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usbd_bos_desc_register(busid, &bos_desc);
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usbd_msosv2_desc_register(busid, &msosv2_desc);
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usbd_webusb_desc_register(busid, &webusb_url_desc);
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- 增加一个接口描述符用于 webusb
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.. code-block:: C
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USB_INTERFACE_DESCRIPTOR_INIT(USBD_WEBUSB_INTF_NUM, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00)
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- 其余使用 hid 描述符,不再赘述
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- 枚举完成后,电脑右下角会弹出网页信息,点击即可打开网页
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@@ -1,2 +1,32 @@
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usbd_winusb
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===============
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本节主要介绍 winusb 驱动。winusb 是 windows 为了让用户友好的访问 USB 自定义类设备提供的一套通用驱动,其实本质就是 CDC ACM。
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WINUSB 版本根据 USB 版本分为 V1/V2 版本,V2 版本需要包含 BOS 描述符,V1 版本不需要。V2 版本需要在设备描述符中设置为 USB2.1 的版本号。
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- V1 版本注册描述符
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.. code-block:: C
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usbd_msosv1_desc_register(busid, &msosv1_desc);
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- V2 版本注册描述符
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.. code-block:: C
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usbd_bos_desc_register(busid, &bos_desc);
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usbd_msosv2_desc_register(busid, &msosv2_desc);
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- 接口描述符注册
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.. code-block:: C
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/* Interface 0 */
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USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x02),
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/* Endpoint OUT 2 */
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USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, USB_ENDPOINT_TYPE_BULK, WINUSB_EP_MPS, 0x00),
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/* Endpoint IN 1 */
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USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, USB_ENDPOINT_TYPE_BULK, WINUSB_EP_MPS, 0x00),
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- 其余操作与 CDC ACM 相同,不再赘述
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@@ -1,2 +1,51 @@
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usbh_hid
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===============
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本节主要介绍 HID 类的使用。
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- HID 枚举完成回调中创建一次性线程
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.. code-block:: C
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void usbh_hid_run(struct usbh_hid *hid_class)
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{
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usb_osal_thread_create("usbh_hid", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_hid_thread, hid_class);
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}
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void usbh_hid_stop(struct usbh_hid *hid_class)
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{
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}
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- 这里我们使用 usbh_submit_urb 的异步操作,在中断中处理数据并继续接收下一次数据。
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.. code-block:: C
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static void usbh_hid_thread(void *argument)
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{
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int ret;
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struct usbh_hid *hid_class = (struct usbh_hid *)argument;
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;
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/* test with only one buffer, if you have more hid class, modify by yourself */
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/* Suggest you to use timer for int transfer and use ep interval */
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usbh_int_urb_fill(&hid_class->intin_urb, hid_class->hport, hid_class->intin, hid_buffer, hid_class->intin->wMaxPacketSize, 0, usbh_hid_callback, hid_class);
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ret = usbh_submit_urb(&hid_class->intin_urb);
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if (ret < 0) {
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goto delete;
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}
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// clang-format off
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delete:
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usb_osal_thread_delete(NULL);
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// clang-format on
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}
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- 当然,也可以不使用异步操作,而是使用 timeout 的同步操作。
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- HID 使用的是中断传输,因此正常来说,我们需要根据 **bInterval** 来设置定时器,定时触发中断传输,demo 这里没有使用,如果对时间有精确要求,可以选择使用定时器来触发异步发送。
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- 以 hub 通信为例,采用的是一次性定时器,也可以使用周期性定时器。
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.. code-block:: C
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hub->int_timer = usb_osal_timer_create("hubint_tim", USBH_GET_URB_INTERVAL(hub->intin->bInterval, hport->speed), hub_int_timeout, hub, 0);
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@@ -1,2 +1,56 @@
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usbh_msc
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===============
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本节主要介绍主机 MSC 使用。借助 FATFS 实现读写功能。
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- 在 msc 枚举完成的回调中注册一个线程,用于读写操作。
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.. code-block:: C
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void usbh_msc_run(struct usbh_msc *msc_class)
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{
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usb_osal_thread_create("usbh_msc", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_msc_thread, msc_class);
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}
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void usbh_msc_stop(struct usbh_msc *msc_class)
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{
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}
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- 不使用 fatfs,则直接使用 usbh_msc_scsi_read10 或者 usbh_msc_scsi_write10 函数进行读写操作。
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- 如果使用 fatfs,则需要在 usbh_msc_thread 中调用 fatfs 的接口进行读写操作。msc读写适配fatfs 参考 `platform/none/usbh_fatfs.c`
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.. code-block:: C
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static void usbh_msc_thread(void *argument)
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{
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int ret;
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struct usbh_msc *msc_class = (struct usbh_msc *)argument;
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/* test with only one buffer, if you have more msc class, modify by yourself */
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#if 1
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/* get the partition table */
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ret = usbh_msc_scsi_read10(msc_class, 0, partition_table, 1);
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if (ret < 0) {
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USB_LOG_RAW("scsi_read10 error,ret:%d\r\n", ret);
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goto delete;
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}
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for (uint32_t i = 0; i < 512; i++) {
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if (i % 16 == 0) {
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USB_LOG_RAW("\r\n");
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}
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USB_LOG_RAW("%02x ", partition_table[i]);
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}
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USB_LOG_RAW("\r\n");
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#endif
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#if TEST_USBH_MSC_FATFS
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usb_msc_fatfs_test();
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#endif
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// clang-format off
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delete:
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usb_osal_thread_delete(NULL);
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// clang-format on
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}
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- 最后处理完成或者失败后,删除线程。
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@@ -1,2 +1,106 @@
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usbh_net
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===============
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本节主要介绍 USB 网卡的使用,USB 网卡推荐采用 AIR780(RNDIS),EC20(ECM/RNDIS), 手机(RNDIS),RTL8152 USB 网卡,AX88772 USB 网卡。
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USB 网卡传输层面已经对接好了 LWIP 的收发接口,因此,用户只需要包含 **platform/XXX/usbh_lwip.c** 并根据需要开启对应的网卡类的宏即可。
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- 当前支持以下网卡类:
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.. code-block:: C
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// #define CONFIG_USBHOST_PLATFORM_CDC_ECM
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// #define CONFIG_USBHOST_PLATFORM_CDC_RNDIS
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// #define CONFIG_USBHOST_PLATFORM_CDC_NCM
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// #define CONFIG_USBHOST_PLATFORM_ASIX
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// #define CONFIG_USBHOST_PLATFORM_RTL8152
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// #define CONFIG_USBHOST_PLATFORM_BL616
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- 包含了对接 LWIP 的输入输出接口,举例如下
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.. code-block:: C
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static err_t usbh_cdc_ecm_linkoutput(struct netif *netif, struct pbuf *p)
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{
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int ret;
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(void)netif;
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usbh_lwip_eth_output_common(p, usbh_cdc_ecm_get_eth_txbuf());
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ret = usbh_cdc_ecm_eth_output(p->tot_len);
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if (ret < 0) {
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return ERR_BUF;
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} else {
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return ERR_OK;
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}
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}
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void usbh_cdc_ecm_eth_input(uint8_t *buf, uint32_t buflen)
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{
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usbh_lwip_eth_input_common(&g_cdc_ecm_netif, buf, buflen);
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}
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- 网卡类枚举完成后,注册 netif,并且创建网卡接收线程(因此使用 RTTHREAD 时不需要使用 RTT 的接收线程模块)。
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- 必须开启 DHCP client 服务,用于从 USB 网卡获取 IP 地址。
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.. code-block:: C
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void usbh_cdc_ecm_run(struct usbh_cdc_ecm *cdc_ecm_class)
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{
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struct netif *netif = &g_cdc_ecm_netif;
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netif->hwaddr_len = 6;
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memcpy(netif->hwaddr, cdc_ecm_class->mac, 6);
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IP4_ADDR(&g_ipaddr, 0, 0, 0, 0);
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IP4_ADDR(&g_netmask, 0, 0, 0, 0);
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IP4_ADDR(&g_gateway, 0, 0, 0, 0);
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netif = netif_add(netif, &g_ipaddr, &g_netmask, &g_gateway, NULL, usbh_cdc_ecm_if_init, tcpip_input);
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netif_set_default(netif);
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while (!netif_is_up(netif)) {
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}
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dhcp_handle = usb_osal_timer_create("dhcp", 200, dhcp_timeout, netif, true);
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if (dhcp_handle == NULL) {
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USB_LOG_ERR("timer creation failed! \r\n");
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while (1) {
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}
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}
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usb_osal_thread_create("usbh_cdc_ecm_rx", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_cdc_ecm_rx_thread, NULL);
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#if LWIP_DHCP
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dhcp_start(netif);
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usb_osal_timer_start(dhcp_handle);
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#endif
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}
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- 获取到 IP 以后,就与 USB 没有关系了,直接使用 LWIP 的接口即可。
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- 需要注意以下参数
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LWIP_TCPIP_CORE_LOCKING_INPUT 用于不使用 lwip 内置的 tcpip 线程,而使用 USB 自己的处理线程。
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LWIP_TCPIP_CORE_LOCKING 在现在 lwip 版本中默认是打开的,也推荐必须打开。
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PBUF_POOL_BUFSIZE 推荐大于1600,搭配 LWIP_TCPIP_CORE_LOCKING_INPUT 使用,因为我们提供了使用 zero mempy 的方式,使用静态 pbuf,而不是把数据 copy 到 pbuf 中。
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TCPIP_THREAD_STACKSIZE 推荐大于 1K,防止栈溢出。
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.. code-block:: C
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#if LWIP_TCPIP_CORE_LOCKING_INPUT != 1
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#warning suggest you to set LWIP_TCPIP_CORE_LOCKING_INPUT to 1, usb handles eth input with own thread
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#endif
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#if LWIP_TCPIP_CORE_LOCKING != 1
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#error must set LWIP_TCPIP_CORE_LOCKING to 1
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#endif
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#if PBUF_POOL_BUFSIZE < 1600
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#error PBUF_POOL_BUFSIZE must be larger than 1600
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#endif
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#if TCPIP_THREAD_STACKSIZE < 1024
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#error TCPIP_THREAD_STACKSIZE must be >= 1024
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#endif
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