circuitpython/stm/lib/usbd_pyb_core2.c

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#include <stdio.h>
#include "usbd_ioreq.h"
#include "usbd_desc.h"
#include "usbd_req.h"
#include "usbd_pyb_core.h"
#define USB_PYB_CONFIG_DESC_SIZ (34)
#define HID_MOUSE_REPORT_DESC_SIZE (74)
#define HID_DESCRIPTOR_TYPE (0x21)
#define HID_REPORT_DESC (0x22)
#define HID_IN_EP (0x81)
#define HID_IN_PACKET (4) /* maximum, and actual, packet size */
/*********************************************
PYB Device library callbacks
*********************************************/
static uint8_t usbd_pyb_Init (void *pdev, uint8_t cfgidx);
static uint8_t usbd_pyb_DeInit (void *pdev, uint8_t cfgidx);
static uint8_t usbd_pyb_Setup (void *pdev, USB_SETUP_REQ *req);
static uint8_t usbd_pyb_DataIn (void *pdev, uint8_t epnum);
/*********************************************
PYB specific management functions
*********************************************/
static uint8_t *usbd_pyb_GetCfgDesc(uint8_t speed, uint16_t *length);
__ALIGN_BEGIN static uint8_t USBD_HID_AltSet __ALIGN_END = 0;
__ALIGN_BEGIN static uint8_t USBD_HID_Protocol __ALIGN_END = 0;
__ALIGN_BEGIN static uint8_t USBD_HID_IdleState __ALIGN_END = 0;
/* PYB interface class callbacks structure */
USBD_Class_cb_TypeDef USBD_PYB_HID_cb =
{
usbd_pyb_Init,
usbd_pyb_DeInit,
usbd_pyb_Setup,
NULL, // EP0_TxSent
NULL, // usbd_pyb_EP0_RxReady,
usbd_pyb_DataIn,
NULL, // usbd_pyb_DataOut,
NULL, // usbd_pyb_SOF,
NULL, // IsoINIncomplete
NULL, // IsoOUTIncomplete
usbd_pyb_GetCfgDesc,
// for OTG_HS support need to add other cfg desc here
};
/* USB PYB device Configuration Descriptor */
__ALIGN_BEGIN static uint8_t usbd_pyb_CfgDesc[USB_PYB_CONFIG_DESC_SIZ] __ALIGN_END =
{
//--------------------------------------------------------------------------
// Configuration Descriptor
0x09, // bLength: Configuration Descriptor size
USB_CONFIGURATION_DESCRIPTOR_TYPE, // bDescriptorType: Configuration
LOBYTE(USB_PYB_CONFIG_DESC_SIZ), // wTotalLength: no of returned bytes
HIBYTE(USB_PYB_CONFIG_DESC_SIZ),
0x01, // bNumInterfaces: 1 interfaces
0x01, // bConfigurationValue: Configuration value
0x04, // iConfiguration: Index of string descriptor describing the configuration
0x80, // bmAttributes: bus powered; 0xc0 for self powered
0xfa, // bMaxPower: in units of 2mA
//--------------------------------------------------------------------------
// Interface Descriptor
0x09, // bLength: Interface Descriptor size
USB_INTERFACE_DESCRIPTOR_TYPE, // bDescriptorType: interface descriptor
0x00, // bInterfaceNumber: Number of Interface
0x00, // bAlternateSetting: Alternate setting
0x01, // bNumEndpoints
0x03, // bInterfaceClass: HID Class
0x01, // bInterfaceSubClass: 0=no boot, 1=BOOT
0x02, // nInterfaceProtocol: 0=none, 1=keyboard, 2=mouse
0x00, // iInterface:
// Descriptor of Joystick Mouse HID
0x09, // bLength: HID Descriptor size
HID_DESCRIPTOR_TYPE, // bDescriptorType: HID
0x11, // bcdHID: HID Class Spec release number, low byte
0x01, // bcdHID: high byte
0x00, // bCountryCode: Hardware target country (0=unsupported)
0x01, // bNumDescriptors: Number of HID class descriptors to follow
HID_REPORT_DESC, // bDescriptorType: report
HID_MOUSE_REPORT_DESC_SIZE, // wItemLength: Total length of Report descriptor
0x00,
// Endpoint IN descriptor
0x07, // bLength: Endpoint descriptor length
USB_ENDPOINT_DESCRIPTOR_TYPE, // bDescriptorType: Endpoint descriptor type
HID_IN_EP, // bEndpointAddress: IN, address of HID
0x03, // bmAttributes: Interrupt endpoint type
LOBYTE(HID_IN_PACKET), // wMaxPacketSize
HIBYTE(HID_IN_PACKET),
0x0a, // bInterval: polling interval, units of 1ms
};
__ALIGN_BEGIN static uint8_t HID_MOUSE_ReportDesc[HID_MOUSE_REPORT_DESC_SIZE] __ALIGN_END =
{
0x05, 0x01,
0x09, 0x02,
0xA1, 0x01,
0x09, 0x01,
0xA1, 0x00,
0x05, 0x09,
0x19, 0x01,
0x29, 0x03,
0x15, 0x00,
0x25, 0x01,
0x95, 0x03,
0x75, 0x01,
0x81, 0x02,
0x95, 0x01,
0x75, 0x05,
0x81, 0x01,
0x05, 0x01,
0x09, 0x30,
0x09, 0x31,
0x09, 0x38,
0x15, 0x81,
0x25, 0x7F,
0x75, 0x08,
0x95, 0x03,
0x81, 0x06,
0xC0, 0x09,
0x3c, 0x05,
0xff, 0x09,
0x01, 0x15,
0x00, 0x25,
0x01, 0x75,
0x01, 0x95,
0x02, 0xb1,
0x22, 0x75,
0x06, 0x95,
0x01, 0xb1,
0x01, 0xc0
};
/**
* @brief usbd_pyb_Init
* Initilaize the PYB interface
* @param pdev: device instance
* @param cfgidx: Configuration index
* @retval status
*/
static uint8_t usbd_pyb_Init(void *pdev, uint8_t cfgidx) {
// deinit first to reset
usbd_pyb_DeInit(pdev, cfgidx);
// Open EP IN
DCD_EP_Open(pdev,
HID_IN_EP,
HID_IN_PACKET,
USB_OTG_EP_INT);
return USBD_OK;
}
/**
* @brief usbd_pyb_Init
* DeInitialize the CDC layer
* @param pdev: device instance
* @param cfgidx: Configuration index
* @retval status
*/
static uint8_t usbd_pyb_DeInit(void *pdev, uint8_t cfgidx) {
// Close HID EP
DCD_EP_Close(pdev, HID_IN_EP);
return USBD_OK;
}
#define HID_REQ_SET_PROTOCOL (0x0B)
#define HID_REQ_GET_PROTOCOL (0x03)
#define HID_REQ_SET_IDLE (0x0A)
#define HID_REQ_GET_IDLE (0x02)
#define HID_REQ_SET_REPORT (0x09) // used?
#define HID_REQ_GET_REPORT (0x01) // used?
/**
* @brief usbd_pyb_Setup
* Handle the CDC specific requests
* @param pdev: instance
* @param req: usb requests
* @retval status
*/
static uint8_t usbd_pyb_Setup(void *pdev, USB_SETUP_REQ *req) {
switch (req->bmRequest & (USB_REQ_TYPE_MASK | USB_REQ_RECIPIENT_MASK)) {
// Standard Device Request ---------------------------------------------
case (USB_REQ_TYPE_STANDARD | USB_REQ_RECIPIENT_DEVICE):
break;
// Standard Interface Request ------------------------------------------
case (USB_REQ_TYPE_STANDARD | USB_REQ_RECIPIENT_INTERFACE):
switch (req->bRequest) {
case USB_REQ_GET_DESCRIPTOR: // needed for HID; SU 0x81 0x06 0x2200 0x00 request
// wIndex & 0xff is the interface
if ((req->wIndex & 0xff) == 0) {
uint16_t len = 0;
uint8_t *pbuf = NULL;
if( req->wValue >> 8 == HID_REPORT_DESC) {
len = MIN(HID_MOUSE_REPORT_DESC_SIZE , req->wLength);
pbuf = HID_MOUSE_ReportDesc;
return USBD_CtlSendData (pdev, pbuf, len);
} else if( req->wValue >> 8 == HID_DESCRIPTOR_TYPE) {
pbuf = usbd_pyb_CfgDesc + 0x09 + 0x09;
len = MIN(0x09 , req->wLength);
return USBD_CtlSendData (pdev, pbuf, len);
}
}
case USB_REQ_GET_INTERFACE:
// wIndex & 0xff is the interface
if ((req->wIndex & 0xff) == 0) {
return USBD_CtlSendData(pdev, &USBD_HID_AltSet, 1);
}
case USB_REQ_SET_INTERFACE:
if ((uint8_t)(req->wValue) < USBD_ITF_MAX_NUM) { // TODO
if ((req->wIndex & 0xff) == 0) {
USBD_HID_AltSet = req->wValue;
}
return USBD_OK;
}
}
break;
// Standard Endpoint Request -------------------------------------------
case (USB_REQ_TYPE_STANDARD | USB_REQ_RECIPIENT_ENDPOINT):
// req->wIndex is the endpoint number, including direction
break;
// CDC Class Requests ------------------------------
case (USB_REQ_TYPE_CLASS | USB_REQ_RECIPIENT_INTERFACE):
// req->wIndex is the recipient interface number
if (req->wIndex == 0) {
// HID component
switch (req->bRequest) {
case HID_REQ_SET_PROTOCOL:
USBD_HID_Protocol = req->wValue;
return USBD_OK;
case HID_REQ_GET_PROTOCOL:
return USBD_CtlSendData(pdev, &USBD_HID_Protocol, 1);
case HID_REQ_SET_IDLE:
USBD_HID_IdleState = (req->wValue >> 8);
return USBD_OK;
case HID_REQ_GET_IDLE:
return USBD_CtlSendData(pdev, &USBD_HID_IdleState, 1);
}
}
break;
}
printf("SU %x %x %x %x\n", req->bmRequest, req->bRequest, req->wValue, req->wIndex);
// invalid command
USBD_CtlError(pdev, req);
return USBD_FAIL;
}
/**
* @brief usbd_pyb_DataIn
* Data sent on non-control IN endpoint
* @param pdev: device instance
* @param epnum: endpoint number
* @retval status
*/
static uint8_t usbd_pyb_DataIn(void *pdev, uint8_t epnum) {
switch (epnum) {
case (HID_IN_EP & 0x7f):
/* Ensure that the FIFO is empty before a new transfer, this condition could
be caused by a new transfer before the end of the previous transfer */
DCD_EP_Flush(pdev, HID_IN_EP);
return USBD_OK;
}
printf("DI %x\n", epnum);
return USBD_OK;
}
/**
* @brief usbd_pyb_GetCfgDesc
* Return configuration descriptor
* @param speed : current device speed
* @param length : pointer data length
* @retval pointer to descriptor buffer
*/
static uint8_t *usbd_pyb_GetCfgDesc(uint8_t speed, uint16_t *length) {
*length = sizeof(usbd_pyb_CfgDesc);
return usbd_pyb_CfgDesc;
}
/**
* @brief USBD_HID_SendReport
* Send HID Report
* @param pdev: device instance
* @param buff: pointer to report (4 bytes: ?, x, y, ?)
* @retval status
*/
uint8_t USBD_HID_SendReport(USB_OTG_CORE_HANDLE *pdev, uint8_t *report, uint16_t len) {
if (pdev->dev.device_status == USB_OTG_CONFIGURED) {
DCD_EP_Tx(pdev, HID_IN_EP, report, len);
}
return USBD_OK;
}