279 lines
8.2 KiB
C
279 lines
8.2 KiB
C
/*
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* Copyright (c) 2022, sakumisu
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "usbh_core.h"
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#include "usbh_cdc_acm.h"
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#undef USB_DBG_TAG
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#define USB_DBG_TAG "usbh_cdc_acm"
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#include "usb_log.h"
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#define DEV_FORMAT "/dev/ttyACM%d"
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USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_cdc_acm_buf[64];
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static struct usbh_cdc_acm g_cdc_acm_class[CONFIG_USBHOST_MAX_CDC_ACM_CLASS];
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static uint32_t g_devinuse = 0;
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static struct usbh_cdc_acm *usbh_cdc_acm_class_alloc(void)
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{
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int devno;
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for (devno = 0; devno < CONFIG_USBHOST_MAX_CDC_ACM_CLASS; devno++) {
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if ((g_devinuse & (1 << devno)) == 0) {
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g_devinuse |= (1 << devno);
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memset(&g_cdc_acm_class[devno], 0, sizeof(struct usbh_cdc_acm));
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g_cdc_acm_class[devno].minor = devno;
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return &g_cdc_acm_class[devno];
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}
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}
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return NULL;
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}
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static void usbh_cdc_acm_class_free(struct usbh_cdc_acm *cdc_acm_class)
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{
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int devno = cdc_acm_class->minor;
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if (devno >= 0 && devno < 32) {
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g_devinuse &= ~(1 << devno);
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}
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memset(cdc_acm_class, 0, sizeof(struct usbh_cdc_acm));
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}
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int usbh_cdc_acm_set_line_coding(struct usbh_cdc_acm *cdc_acm_class, struct cdc_line_coding *line_coding)
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{
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struct usb_setup_packet *setup;
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if (!cdc_acm_class || !cdc_acm_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = cdc_acm_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
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setup->bRequest = CDC_REQUEST_SET_LINE_CODING;
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setup->wValue = 0;
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setup->wIndex = cdc_acm_class->intf;
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setup->wLength = 7;
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memcpy(g_cdc_acm_buf, line_coding, sizeof(struct cdc_line_coding));
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return usbh_control_transfer(cdc_acm_class->hport, setup, g_cdc_acm_buf);
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}
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int usbh_cdc_acm_get_line_coding(struct usbh_cdc_acm *cdc_acm_class, struct cdc_line_coding *line_coding)
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{
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struct usb_setup_packet *setup;
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int ret;
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if (!cdc_acm_class || !cdc_acm_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = cdc_acm_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
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setup->bRequest = CDC_REQUEST_GET_LINE_CODING;
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setup->wValue = 0;
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setup->wIndex = cdc_acm_class->intf;
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setup->wLength = 7;
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ret = usbh_control_transfer(cdc_acm_class->hport, setup, g_cdc_acm_buf);
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if (ret < 0) {
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return ret;
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}
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memcpy(line_coding, g_cdc_acm_buf, sizeof(struct cdc_line_coding));
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return ret;
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}
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int usbh_cdc_acm_set_line_state(struct usbh_cdc_acm *cdc_acm_class, bool dtr, bool rts)
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{
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struct usb_setup_packet *setup;
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if (!cdc_acm_class || !cdc_acm_class->hport) {
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return -USB_ERR_INVAL;
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}
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setup = cdc_acm_class->hport->setup;
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setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
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setup->bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE;
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setup->wValue = (dtr << 0) | (rts << 1);
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setup->wIndex = cdc_acm_class->intf;
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setup->wLength = 0;
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return usbh_control_transfer(cdc_acm_class->hport, setup, NULL);
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}
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static int usbh_cdc_acm_connect(struct usbh_hubport *hport, uint8_t intf)
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{
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struct usb_endpoint_descriptor *ep_desc;
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int ret = 0;
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struct usbh_cdc_acm *cdc_acm_class = usbh_cdc_acm_class_alloc();
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if (cdc_acm_class == NULL) {
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USB_LOG_ERR("Fail to alloc cdc_acm_class\r\n");
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return -USB_ERR_NOMEM;
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}
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cdc_acm_class->hport = hport;
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cdc_acm_class->intf = intf;
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hport->config.intf[intf].priv = cdc_acm_class;
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hport->config.intf[intf + 1].priv = NULL;
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#ifdef CONFIG_USBHOST_CDC_ACM_NOTIFY
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ep_desc = &hport->config.intf[intf].altsetting[0].ep[0].ep_desc;
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USBH_EP_INIT(cdc_acm_class->intin, ep_desc);
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#endif
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for (uint8_t i = 0; i < hport->config.intf[intf + 1].altsetting[0].intf_desc.bNumEndpoints; i++) {
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ep_desc = &hport->config.intf[intf + 1].altsetting[0].ep[i].ep_desc;
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if (ep_desc->bEndpointAddress & 0x80) {
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USBH_EP_INIT(cdc_acm_class->bulkin, ep_desc);
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} else {
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USBH_EP_INIT(cdc_acm_class->bulkout, ep_desc);
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}
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}
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snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, cdc_acm_class->minor);
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USB_LOG_INFO("Register CDC ACM Class:%s\r\n", hport->config.intf[intf].devname);
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#if 0
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USB_LOG_INFO("Test cdc acm rx and tx and rx for 5 times, baudrate is 115200\r\n");
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struct cdc_line_coding linecoding;
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uint8_t count = 5;
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linecoding.dwDTERate = 115200;
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linecoding.bDataBits = 8;
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linecoding.bParityType = 0;
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linecoding.bCharFormat = 0;
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usbh_cdc_acm_set_line_coding(cdc_acm_class, &linecoding);
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usbh_cdc_acm_set_line_state(cdc_acm_class, true, false);
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memset(g_cdc_acm_buf, 'a', sizeof(g_cdc_acm_buf));
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ret = usbh_cdc_acm_bulk_out_transfer(cdc_acm_class, g_cdc_acm_buf, sizeof(g_cdc_acm_buf), 0xfffffff);
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USB_LOG_RAW("out ret:%d\r\n", ret);
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while (count--) {
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ret = usbh_cdc_acm_bulk_in_transfer(cdc_acm_class, g_cdc_acm_buf, sizeof(g_cdc_acm_buf), 0xfffffff);
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USB_LOG_RAW("in ret:%d\r\n", ret);
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if (ret > 0) {
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for (uint32_t i = 0; i < ret; i++) {
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USB_LOG_RAW("%02x ", g_cdc_acm_buf[i]);
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}
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}
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USB_LOG_RAW("\r\n");
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}
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#endif
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usbh_cdc_acm_run(cdc_acm_class);
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return ret;
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}
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static int usbh_cdc_acm_disconnect(struct usbh_hubport *hport, uint8_t intf)
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{
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int ret = 0;
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struct usbh_cdc_acm *cdc_acm_class = (struct usbh_cdc_acm *)hport->config.intf[intf].priv;
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if (cdc_acm_class) {
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if (cdc_acm_class->bulkin) {
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usbh_kill_urb(&cdc_acm_class->bulkin_urb);
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}
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if (cdc_acm_class->bulkout) {
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usbh_kill_urb(&cdc_acm_class->bulkout_urb);
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}
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#ifdef CONFIG_USBHOST_CDC_ACM_NOTIFY
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if (cdc_acm_class->intin) {
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usbh_kill_urb(&cdc_acm_class->intin_urb);
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}
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#endif
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if (hport->config.intf[intf].devname[0] != '\0') {
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USB_LOG_INFO("Unregister CDC ACM Class:%s\r\n", hport->config.intf[intf].devname);
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usbh_cdc_acm_stop(cdc_acm_class);
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}
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usbh_cdc_acm_class_free(cdc_acm_class);
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}
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return ret;
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}
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int usbh_cdc_acm_bulk_in_transfer(struct usbh_cdc_acm *cdc_acm_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
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{
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int ret;
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struct usbh_urb *urb = &cdc_acm_class->bulkin_urb;
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usbh_bulk_urb_fill(urb, cdc_acm_class->hport, cdc_acm_class->bulkin, buffer, buflen, timeout, NULL, NULL);
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ret = usbh_submit_urb(urb);
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if (ret == 0) {
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ret = urb->actual_length;
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}
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return ret;
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}
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int usbh_cdc_acm_bulk_out_transfer(struct usbh_cdc_acm *cdc_acm_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
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{
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int ret;
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struct usbh_urb *urb = &cdc_acm_class->bulkout_urb;
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usbh_bulk_urb_fill(urb, cdc_acm_class->hport, cdc_acm_class->bulkout, buffer, buflen, timeout, NULL, NULL);
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ret = usbh_submit_urb(urb);
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if (ret == 0) {
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ret = urb->actual_length;
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}
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return ret;
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}
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static int usbh_cdc_data_connect(struct usbh_hubport *hport, uint8_t intf)
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{
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return 0;
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}
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static int usbh_cdc_data_disconnect(struct usbh_hubport *hport, uint8_t intf)
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{
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return 0;
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}
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__WEAK void usbh_cdc_acm_run(struct usbh_cdc_acm *cdc_acm_class)
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{
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}
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__WEAK void usbh_cdc_acm_stop(struct usbh_cdc_acm *cdc_acm_class)
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{
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}
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const struct usbh_class_driver cdc_acm_class_driver = {
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.driver_name = "cdc_acm",
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.connect = usbh_cdc_acm_connect,
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.disconnect = usbh_cdc_acm_disconnect
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};
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const struct usbh_class_driver cdc_data_class_driver = {
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.driver_name = "cdc_data",
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.connect = usbh_cdc_data_connect,
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.disconnect = usbh_cdc_data_disconnect
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};
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CLASS_INFO_DEFINE const struct usbh_class_info cdc_acm_class_info = {
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.match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
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.class = USB_DEVICE_CLASS_CDC,
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.subclass = CDC_ABSTRACT_CONTROL_MODEL,
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.protocol = CDC_COMMON_PROTOCOL_AT_COMMANDS,
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.id_table = NULL,
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.class_driver = &cdc_acm_class_driver
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};
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CLASS_INFO_DEFINE const struct usbh_class_info cdc_data_class_info = {
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.match_flags = USB_CLASS_MATCH_INTF_CLASS,
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.class = USB_DEVICE_CLASS_CDC_DATA,
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.subclass = 0x00,
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.protocol = 0x00,
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.id_table = NULL,
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.class_driver = &cdc_data_class_driver
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};
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