diff options
Diffstat (limited to 'tinyusb/src/class/hid/hid_device.c')
| -rwxr-xr-x | tinyusb/src/class/hid/hid_device.c | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/tinyusb/src/class/hid/hid_device.c b/tinyusb/src/class/hid/hid_device.c new file mode 100755 index 00000000..2ee80750 --- /dev/null +++ b/tinyusb/src/class/hid/hid_device.c @@ -0,0 +1,417 @@ +/* + * 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_DEVICE_ENABLED && CFG_TUD_HID) + +//--------------------------------------------------------------------+ +// INCLUDE +//--------------------------------------------------------------------+ +#include "device/usbd.h" +#include "device/usbd_pvt.h" + +#include "hid_device.h" + +//--------------------------------------------------------------------+ +// MACRO CONSTANT TYPEDEF +//--------------------------------------------------------------------+ +typedef struct +{ + uint8_t itf_num; + uint8_t ep_in; + uint8_t ep_out; // optional Out endpoint + uint8_t itf_protocol; // Boot mouse or keyboard + + uint8_t protocol_mode; // Boot (0) or Report protocol (1) + uint8_t idle_rate; // up to application to handle idle rate + uint16_t report_desc_len; + + CFG_TUSB_MEM_ALIGN uint8_t epin_buf[CFG_TUD_HID_EP_BUFSIZE]; + CFG_TUSB_MEM_ALIGN uint8_t epout_buf[CFG_TUD_HID_EP_BUFSIZE]; + + // TODO save hid descriptor since host can specifically request this after enumeration + // Note: HID descriptor may be not available from application after enumeration + tusb_hid_descriptor_hid_t const * hid_descriptor; +} hidd_interface_t; + +CFG_TUSB_MEM_SECTION static hidd_interface_t _hidd_itf[CFG_TUD_HID]; + +/*------------- Helpers -------------*/ +static inline uint8_t get_index_by_itfnum(uint8_t itf_num) +{ + for (uint8_t i=0; i < CFG_TUD_HID; i++ ) + { + if ( itf_num == _hidd_itf[i].itf_num ) return i; + } + + return 0xFF; +} + +//--------------------------------------------------------------------+ +// APPLICATION API +//--------------------------------------------------------------------+ +bool tud_hid_n_ready(uint8_t instance) +{ + uint8_t const ep_in = _hidd_itf[instance].ep_in; + return tud_ready() && (ep_in != 0) && !usbd_edpt_busy(TUD_OPT_RHPORT, ep_in); +} + +bool tud_hid_n_report(uint8_t instance, uint8_t report_id, void const* report, uint8_t len) +{ + uint8_t const rhport = 0; + hidd_interface_t * p_hid = &_hidd_itf[instance]; + + // claim endpoint + TU_VERIFY( usbd_edpt_claim(rhport, p_hid->ep_in) ); + + // prepare data + if (report_id) + { + len = tu_min8(len, CFG_TUD_HID_EP_BUFSIZE-1); + + p_hid->epin_buf[0] = report_id; + memcpy(p_hid->epin_buf+1, report, len); + len++; + }else + { + // If report id = 0, skip ID field + len = tu_min8(len, CFG_TUD_HID_EP_BUFSIZE); + memcpy(p_hid->epin_buf, report, len); + } + + return usbd_edpt_xfer(TUD_OPT_RHPORT, p_hid->ep_in, p_hid->epin_buf, len); +} + +uint8_t tud_hid_n_interface_protocol(uint8_t instance) +{ + return _hidd_itf[instance].itf_protocol; +} + +uint8_t tud_hid_n_get_protocol(uint8_t instance) +{ + return _hidd_itf[instance].protocol_mode; +} + +bool tud_hid_n_keyboard_report(uint8_t instance, uint8_t report_id, uint8_t modifier, uint8_t keycode[6]) +{ + hid_keyboard_report_t report; + + report.modifier = modifier; + report.reserved = 0; + + if ( keycode ) + { + memcpy(report.keycode, keycode, 6); + }else + { + tu_memclr(report.keycode, 6); + } + + return tud_hid_n_report(instance, report_id, &report, sizeof(report)); +} + +bool tud_hid_n_mouse_report(uint8_t instance, uint8_t report_id, + uint8_t buttons, int8_t x, int8_t y, int8_t vertical, int8_t horizontal) +{ + hid_mouse_report_t report = + { + .buttons = buttons, + .x = x, + .y = y, + .wheel = vertical, + .pan = horizontal + }; + + return tud_hid_n_report(instance, report_id, &report, sizeof(report)); +} + +bool tud_hid_n_gamepad_report(uint8_t instance, uint8_t report_id, + int8_t x, int8_t y, int8_t z, int8_t rz, int8_t rx, int8_t ry, uint8_t hat, uint32_t buttons) +{ + hid_gamepad_report_t report = + { + .x = x, + .y = y, + .z = z, + .rz = rz, + .rx = rx, + .ry = ry, + .hat = hat, + .buttons = buttons, + }; + + return tud_hid_n_report(instance, report_id, &report, sizeof(report)); +} + +//--------------------------------------------------------------------+ +// USBD-CLASS API +//--------------------------------------------------------------------+ +void hidd_init(void) +{ + hidd_reset(TUD_OPT_RHPORT); +} + +void hidd_reset(uint8_t rhport) +{ + (void) rhport; + tu_memclr(_hidd_itf, sizeof(_hidd_itf)); +} + +uint16_t hidd_open(uint8_t rhport, tusb_desc_interface_t const * desc_itf, uint16_t max_len) +{ + TU_VERIFY(TUSB_CLASS_HID == desc_itf->bInterfaceClass, 0); + + // len = interface + hid + n*endpoints + uint16_t const drv_len = sizeof(tusb_desc_interface_t) + sizeof(tusb_hid_descriptor_hid_t) + desc_itf->bNumEndpoints*sizeof(tusb_desc_endpoint_t); + TU_ASSERT(max_len >= drv_len, 0); + + // Find available interface + hidd_interface_t * p_hid = NULL; + uint8_t hid_id; + for(hid_id=0; hid_id<CFG_TUD_HID; hid_id++) + { + if ( _hidd_itf[hid_id].ep_in == 0 ) + { + p_hid = &_hidd_itf[hid_id]; + break; + } + } + TU_ASSERT(p_hid, 0); + + uint8_t const *p_desc = (uint8_t const *) desc_itf; + + //------------- HID descriptor -------------// + p_desc = tu_desc_next(p_desc); + p_hid->hid_descriptor = (tusb_hid_descriptor_hid_t const *) p_desc; + TU_ASSERT(HID_DESC_TYPE_HID == p_hid->hid_descriptor->bDescriptorType, 0); + + //------------- Endpoint Descriptor -------------// + p_desc = tu_desc_next(p_desc); + TU_ASSERT(usbd_open_edpt_pair(rhport, p_desc, desc_itf->bNumEndpoints, TUSB_XFER_INTERRUPT, &p_hid->ep_out, &p_hid->ep_in), 0); + + if ( desc_itf->bInterfaceSubClass == HID_SUBCLASS_BOOT ) p_hid->itf_protocol = desc_itf->bInterfaceProtocol; + + p_hid->protocol_mode = HID_PROTOCOL_REPORT; // Per Specs: default is report mode + p_hid->itf_num = desc_itf->bInterfaceNumber; + + // Use offsetof to avoid pointer to the odd/misaligned address + memcpy(&p_hid->report_desc_len, (uint8_t*) p_hid->hid_descriptor + offsetof(tusb_hid_descriptor_hid_t, wReportLength), 2); + + // Prepare for output endpoint + if (p_hid->ep_out) + { + if ( !usbd_edpt_xfer(rhport, p_hid->ep_out, p_hid->epout_buf, sizeof(p_hid->epout_buf)) ) + { + TU_LOG_FAILED(); + TU_BREAKPOINT(); + } + } + + return drv_len; +} + +// Invoked when a control transfer occurred on an interface of this class +// Driver response accordingly to the request and the transfer stage (setup/data/ack) +// return false to stall control endpoint (e.g unsupported request) +bool hidd_control_xfer_cb (uint8_t rhport, uint8_t stage, tusb_control_request_t const * request) +{ + TU_VERIFY(request->bmRequestType_bit.recipient == TUSB_REQ_RCPT_INTERFACE); + + uint8_t const hid_itf = get_index_by_itfnum((uint8_t) request->wIndex); + TU_VERIFY(hid_itf < CFG_TUD_HID); + + hidd_interface_t* p_hid = &_hidd_itf[hid_itf]; + + if (request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD) + { + //------------- STD Request -------------// + if ( stage == CONTROL_STAGE_SETUP ) + { + uint8_t const desc_type = tu_u16_high(request->wValue); + //uint8_t const desc_index = tu_u16_low (request->wValue); + + if (request->bRequest == TUSB_REQ_GET_DESCRIPTOR && desc_type == HID_DESC_TYPE_HID) + { + TU_VERIFY(p_hid->hid_descriptor != NULL); + TU_VERIFY(tud_control_xfer(rhport, request, (void*) p_hid->hid_descriptor, p_hid->hid_descriptor->bLength)); + } + else if (request->bRequest == TUSB_REQ_GET_DESCRIPTOR && desc_type == HID_DESC_TYPE_REPORT) + { + uint8_t const * desc_report = tud_hid_descriptor_report_cb(hid_itf); + tud_control_xfer(rhport, request, (void*) desc_report, p_hid->report_desc_len); + } + else + { + return false; // stall unsupported request + } + } + } + else if (request->bmRequestType_bit.type == TUSB_REQ_TYPE_CLASS) + { + //------------- Class Specific Request -------------// + switch( request->bRequest ) + { + case HID_REQ_CONTROL_GET_REPORT: + if ( stage == CONTROL_STAGE_SETUP ) + { + uint8_t const report_type = tu_u16_high(request->wValue); + uint8_t const report_id = tu_u16_low(request->wValue); + + uint8_t* report_buf = p_hid->epin_buf; + uint16_t req_len = request->wLength; + + uint16_t xferlen = 0; + + // If host request a specific Report ID, add ID to as 1 byte of response + if ( (report_id != HID_REPORT_TYPE_INVALID) && (req_len > 1) ) + { + *report_buf++ = report_id; + req_len--; + + xferlen++; + } + + xferlen += tud_hid_get_report_cb(hid_itf, report_id, (hid_report_type_t) report_type, report_buf, req_len); + TU_ASSERT( xferlen > 0 ); + + tud_control_xfer(rhport, request, p_hid->epin_buf, xferlen); + } + break; + + case HID_REQ_CONTROL_SET_REPORT: + if ( stage == CONTROL_STAGE_SETUP ) + { + TU_VERIFY(request->wLength <= sizeof(p_hid->epout_buf)); + tud_control_xfer(rhport, request, p_hid->epout_buf, request->wLength); + } + else if ( stage == CONTROL_STAGE_ACK ) + { + uint8_t const report_type = tu_u16_high(request->wValue); + uint8_t const report_id = tu_u16_low(request->wValue); + + uint8_t const* report_buf = p_hid->epout_buf; + uint16_t report_len = request->wLength; + + // If host request a specific Report ID, extract report ID in buffer before invoking callback + if ( (report_id != HID_REPORT_TYPE_INVALID) && (report_len > 1) && (report_id == report_buf[0]) ) + { + report_buf++; + report_len--; + } + + tud_hid_set_report_cb(hid_itf, report_id, (hid_report_type_t) report_type, report_buf, report_len); + } + break; + + case HID_REQ_CONTROL_SET_IDLE: + if ( stage == CONTROL_STAGE_SETUP ) + { + p_hid->idle_rate = tu_u16_high(request->wValue); + if ( tud_hid_set_idle_cb ) + { + // stall request if callback return false + TU_VERIFY( tud_hid_set_idle_cb( hid_itf, p_hid->idle_rate) ); + } + + tud_control_status(rhport, request); + } + break; + + case HID_REQ_CONTROL_GET_IDLE: + if ( stage == CONTROL_STAGE_SETUP ) + { + // TODO idle rate of report + tud_control_xfer(rhport, request, &p_hid->idle_rate, 1); + } + break; + + case HID_REQ_CONTROL_GET_PROTOCOL: + if ( stage == CONTROL_STAGE_SETUP ) + { + tud_control_xfer(rhport, request, &p_hid->protocol_mode, 1); + } + break; + + case HID_REQ_CONTROL_SET_PROTOCOL: + if ( stage == CONTROL_STAGE_SETUP ) + { + tud_control_status(rhport, request); + } + else if ( stage == CONTROL_STAGE_ACK ) + { + p_hid->protocol_mode = (uint8_t) request->wValue; + if (tud_hid_set_protocol_cb) + { + tud_hid_set_protocol_cb(hid_itf, p_hid->protocol_mode); + } + } + break; + + default: return false; // stall unsupported request + } + }else + { + return false; // stall unsupported request + } + + return true; +} + +bool hidd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes) +{ + (void) result; + + uint8_t instance = 0; + hidd_interface_t * p_hid = _hidd_itf; + + // Identify which interface to use + for (instance = 0; instance < CFG_TUD_HID; instance++) + { + p_hid = &_hidd_itf[instance]; + if ( (ep_addr == p_hid->ep_out) || (ep_addr == p_hid->ep_in) ) break; + } + TU_ASSERT(instance < CFG_TUD_HID); + + // Sent report successfully + if (ep_addr == p_hid->ep_in) + { + if (tud_hid_report_complete_cb) + { + tud_hid_report_complete_cb(instance, p_hid->epin_buf, (uint8_t) xferred_bytes); + } + } + // Received report + else if (ep_addr == p_hid->ep_out) + { + tud_hid_set_report_cb(instance, 0, HID_REPORT_TYPE_INVALID, p_hid->epout_buf, xferred_bytes); + TU_ASSERT(usbd_edpt_xfer(rhport, p_hid->ep_out, p_hid->epout_buf, sizeof(p_hid->epout_buf))); + } + + return true; +} + +#endif |