From 39a5c822a2a2e798e2e39ff8a98b7af84253026c Mon Sep 17 00:00:00 2001 From: Joey Castillo Date: Sat, 28 Aug 2021 12:50:18 -0400 Subject: add tinyusb --- tinyusb/src/class/cdc/cdc_host.c | 249 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 249 insertions(+) create mode 100755 tinyusb/src/class/cdc/cdc_host.c (limited to 'tinyusb/src/class/cdc/cdc_host.c') diff --git a/tinyusb/src/class/cdc/cdc_host.c b/tinyusb/src/class/cdc/cdc_host.c new file mode 100755 index 00000000..e7eaf4d0 --- /dev/null +++ b/tinyusb/src/class/cdc/cdc_host.c @@ -0,0 +1,249 @@ +/* + * The MIT License (MIT) + * + * Copyright (c) 2019 Ha Thach (tinyusb.org) + * + * 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. + * + * This file is part of the TinyUSB stack. + */ + +#include "tusb_option.h" + +#if (TUSB_OPT_HOST_ENABLED && CFG_TUH_CDC) + +#include "host/usbh.h" +#include "host/usbh_classdriver.h" + +#include "cdc_host.h" + +//--------------------------------------------------------------------+ +// MACRO CONSTANT TYPEDEF +//--------------------------------------------------------------------+ +typedef struct { + uint8_t itf_num; + uint8_t itf_protocol; + + uint8_t ep_notif; + uint8_t ep_in; + uint8_t ep_out; + + cdc_acm_capability_t acm_capability; + +} cdch_data_t; + +//--------------------------------------------------------------------+ +// INTERNAL OBJECT & FUNCTION DECLARATION +//--------------------------------------------------------------------+ +static cdch_data_t cdch_data[CFG_TUH_DEVICE_MAX]; + +static inline cdch_data_t* get_itf(uint8_t dev_addr) +{ + return &cdch_data[dev_addr-1]; +} + +bool tuh_cdc_mounted(uint8_t dev_addr) +{ + cdch_data_t* cdc = get_itf(dev_addr); + return cdc->ep_in && cdc->ep_out; +} + +bool tuh_cdc_is_busy(uint8_t dev_addr, cdc_pipeid_t pipeid) +{ + if ( !tuh_cdc_mounted(dev_addr) ) return false; + + cdch_data_t const * p_cdc = get_itf(dev_addr); + + switch (pipeid) + { + case CDC_PIPE_NOTIFICATION: + return usbh_edpt_busy(dev_addr, p_cdc->ep_notif ); + + case CDC_PIPE_DATA_IN: + return usbh_edpt_busy(dev_addr, p_cdc->ep_in ); + + case CDC_PIPE_DATA_OUT: + return usbh_edpt_busy(dev_addr, p_cdc->ep_out ); + + default: + return false; + } +} + +//--------------------------------------------------------------------+ +// APPLICATION API (parameter validation needed) +//--------------------------------------------------------------------+ +bool tuh_cdc_serial_is_mounted(uint8_t dev_addr) +{ + // TODO consider all AT Command as serial candidate + return tuh_cdc_mounted(dev_addr) && + (cdch_data[dev_addr-1].itf_protocol <= CDC_COMM_PROTOCOL_ATCOMMAND_CDMA); +} + +bool tuh_cdc_send(uint8_t dev_addr, void const * p_data, uint32_t length, bool is_notify) +{ + (void) is_notify; + TU_VERIFY( tuh_cdc_mounted(dev_addr) ); + TU_VERIFY( p_data != NULL && length, TUSB_ERROR_INVALID_PARA); + + uint8_t const ep_out = cdch_data[dev_addr-1].ep_out; + if ( usbh_edpt_busy(dev_addr, ep_out) ) return false; + + return usbh_edpt_xfer(dev_addr, ep_out, (void *) p_data, length); +} + +bool tuh_cdc_receive(uint8_t dev_addr, void * p_buffer, uint32_t length, bool is_notify) +{ + (void) is_notify; + TU_VERIFY( tuh_cdc_mounted(dev_addr) ); + TU_VERIFY( p_buffer != NULL && length, TUSB_ERROR_INVALID_PARA); + + uint8_t const ep_in = cdch_data[dev_addr-1].ep_in; + if ( usbh_edpt_busy(dev_addr, ep_in) ) return false; + + return usbh_edpt_xfer(dev_addr, ep_in, p_buffer, length); +} + +bool tuh_cdc_set_control_line_state(uint8_t dev_addr, bool dtr, bool rts, tuh_control_complete_cb_t complete_cb) +{ + cdch_data_t const * p_cdc = get_itf(dev_addr); + tusb_control_request_t const request = + { + .bmRequestType_bit = + { + .recipient = TUSB_REQ_RCPT_INTERFACE, + .type = TUSB_REQ_TYPE_CLASS, + .direction = TUSB_DIR_OUT + }, + .bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE, + .wValue = (rts ? 2 : 0) | (dtr ? 1 : 0), + .wIndex = p_cdc->itf_num, + .wLength = 0 + }; + + TU_ASSERT( tuh_control_xfer(dev_addr, &request, NULL, complete_cb) ); + return true; +} + +//--------------------------------------------------------------------+ +// USBH-CLASS DRIVER API +//--------------------------------------------------------------------+ +void cdch_init(void) +{ + tu_memclr(cdch_data, sizeof(cdch_data)); +} + +bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *itf_desc, uint16_t max_len) +{ + (void) max_len; + + // Only support ACM subclass + // Protocol 0xFF can be RNDIS device for windows XP + TU_VERIFY( TUSB_CLASS_CDC == itf_desc->bInterfaceClass && + CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL == itf_desc->bInterfaceSubClass && + 0xFF != itf_desc->bInterfaceProtocol); + + cdch_data_t * p_cdc = get_itf(dev_addr); + + p_cdc->itf_num = itf_desc->bInterfaceNumber; + p_cdc->itf_protocol = itf_desc->bInterfaceProtocol; + + //------------- Communication Interface -------------// + uint16_t drv_len = tu_desc_len(itf_desc); + uint8_t const * p_desc = tu_desc_next(itf_desc); + + // Communication Functional Descriptors + while( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) && drv_len <= max_len ) + { + if ( CDC_FUNC_DESC_ABSTRACT_CONTROL_MANAGEMENT == cdc_functional_desc_typeof(p_desc) ) + { + // save ACM bmCapabilities + p_cdc->acm_capability = ((cdc_desc_func_acm_t const *) p_desc)->bmCapabilities; + } + + drv_len += tu_desc_len(p_desc); + p_desc = tu_desc_next(p_desc); + } + + if ( TUSB_DESC_ENDPOINT == tu_desc_type(p_desc) ) + { + // notification endpoint + tusb_desc_endpoint_t const * desc_ep = (tusb_desc_endpoint_t const *) p_desc; + + TU_ASSERT( usbh_edpt_open(rhport, dev_addr, desc_ep) ); + p_cdc->ep_notif = desc_ep->bEndpointAddress; + + drv_len += tu_desc_len(p_desc); + p_desc = tu_desc_next(p_desc); + } + + //------------- Data Interface (if any) -------------// + if ( (TUSB_DESC_INTERFACE == tu_desc_type(p_desc)) && + (TUSB_CLASS_CDC_DATA == ((tusb_desc_interface_t const *) p_desc)->bInterfaceClass) ) + { + // next to endpoint descriptor + drv_len += tu_desc_len(p_desc); + p_desc = tu_desc_next(p_desc); + + // data endpoints expected to be in pairs + for(uint32_t i=0; i<2; i++) + { + tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) p_desc; + TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType && TUSB_XFER_BULK == desc_ep->bmAttributes.xfer); + + TU_ASSERT(usbh_edpt_open(rhport, dev_addr, desc_ep)); + + if ( tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN ) + { + p_cdc->ep_in = desc_ep->bEndpointAddress; + }else + { + p_cdc->ep_out = desc_ep->bEndpointAddress; + } + + drv_len += tu_desc_len(p_desc); + p_desc = tu_desc_next( p_desc ); + } + } + + return true; +} + +bool cdch_set_config(uint8_t dev_addr, uint8_t itf_num) +{ + (void) dev_addr; (void) itf_num; + return true; +} + +bool cdch_xfer_cb(uint8_t dev_addr, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes) +{ + (void) ep_addr; + tuh_cdc_xfer_isr( dev_addr, event, 0, xferred_bytes ); + return true; +} + +void cdch_close(uint8_t dev_addr) +{ + TU_VERIFY(dev_addr <= CFG_TUH_DEVICE_MAX, ); + + cdch_data_t * p_cdc = get_itf(dev_addr); + tu_memclr(p_cdc, sizeof(cdch_data_t)); +} + +#endif -- cgit v1.2.3