mirror of https://github.com/rusefi/bldc.git
174 lines
3.3 KiB
C
174 lines
3.3 KiB
C
#include "ch.h"
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#include "hal.h"
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#include "myUSB.h"
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#include "usbdescriptor.h"
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/*
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* Don't ask me, I have no idea what is done here...
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* I think most things are either self explanatory, well documented or not to be touched
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*/
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/*
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* USB Driver structure.
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*/
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SerialUSBDriver SDU1;
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/*===========================================================================*/
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/* USB related stuff. */
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/*===========================================================================*/
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/*
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* Endpoints to be used for USBD1.
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*/
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#define USBD1_DATA_REQUEST_EP 1
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#define USBD1_DATA_AVAILABLE_EP 1
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#define USBD1_INTERRUPT_REQUEST_EP 2
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/*
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* Handles the GET_DESCRIPTOR callback. All required descriptors must be
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* handled here.
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*/
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static const USBDescriptor *get_descriptor(USBDriver *usbp,
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uint8_t dtype,
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uint8_t dindex,
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uint16_t lang) {
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(void)usbp;
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(void)lang;
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switch (dtype) {
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case USB_DESCRIPTOR_DEVICE:
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return &vcom_device_descriptor;
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case USB_DESCRIPTOR_CONFIGURATION:
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return &vcom_configuration_descriptor;
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case USB_DESCRIPTOR_STRING:
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if (dindex < 4)
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return &vcom_strings[dindex];
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}
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return NULL;
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}
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/**
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* @brief IN EP1 state.
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*/
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static USBInEndpointState ep1instate;
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/**
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* @brief OUT EP1 state.
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*/
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static USBOutEndpointState ep1outstate;
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/**
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* @brief EP1 initialization structure (both IN and OUT).
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*/
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static const USBEndpointConfig ep1config = {
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USB_EP_MODE_TYPE_BULK,
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NULL,
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sduDataTransmitted,
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sduDataReceived,
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0x0040,
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0x0040,
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&ep1instate,
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&ep1outstate,
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2,
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NULL
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};
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/**
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* @brief IN EP2 state.
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*/
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static USBInEndpointState ep2instate;
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/**
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* @brief EP2 initialization structure (IN only).
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*/
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static const USBEndpointConfig ep2config = {
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USB_EP_MODE_TYPE_INTR,
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NULL,
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sduInterruptTransmitted,
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NULL,
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0x0010,
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0x0000,
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&ep2instate,
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NULL,
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1,
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NULL
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};
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/*
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* Handles the USB driver global events.
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*/
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static void usb_event(USBDriver *usbp, usbevent_t event) {
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extern SerialUSBDriver SDU1;
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switch (event) {
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case USB_EVENT_RESET:
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return;
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case USB_EVENT_ADDRESS:
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return;
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case USB_EVENT_CONFIGURED:
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chSysLockFromIsr();
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/* Enables the endpoints specified into the configuration.
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Note, this callback is invoked from an ISR so I-Class functions
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must be used.*/
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usbInitEndpointI(usbp, USBD1_DATA_REQUEST_EP, &ep1config);
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usbInitEndpointI(usbp, USBD1_INTERRUPT_REQUEST_EP, &ep2config);
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/* Resetting the state of the CDC subsystem.*/
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sduConfigureHookI(&SDU1);
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chSysUnlockFromIsr();
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return;
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case USB_EVENT_SUSPEND:
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return;
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case USB_EVENT_WAKEUP:
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return;
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case USB_EVENT_STALLED:
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return;
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}
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return;
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}
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/*
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* USB driver configuration.
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*/
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const USBConfig usbcfg = {
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usb_event,
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get_descriptor,
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sduRequestsHook,
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NULL
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};
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/*
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* Serial over USB driver configuration.
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*/
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const SerialUSBConfig serusbcfg = {
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&USBD1,
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USBD1_DATA_REQUEST_EP,
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USBD1_DATA_AVAILABLE_EP,
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USBD1_INTERRUPT_REQUEST_EP
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};
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int isUsbActive(void){
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return SDU1.config->usbp->state == USB_ACTIVE;
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}
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void myUSBinit(void){
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/*
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* Initializes a serial-over-USB CDC driver.
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*/
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sduObjectInit(&SDU1);
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sduStart(&SDU1, &serusbcfg);
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/*
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* Activates the USB driver and then the USB bus pull-up on D+.
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* Note, a delay is inserted in order to not have to disconnect the cable
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* after a reset.
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*/
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usbDisconnectBus(serusbcfg.usbp);
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chThdSleepMilliseconds(1000);
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usbStart(serusbcfg.usbp, &usbcfg);
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usbConnectBus(serusbcfg.usbp);
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}
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