Files
edgetx-gx12/radio/src/targets/common/arm/stm32/usb_driver.cpp
T
2026-08-05 14:57:46 +10:00

300 lines
6.9 KiB
C++

/*
* Copyright (C) EdgeTX
*
* Based on code named
* opentx - https://github.com/opentx/opentx
* th9x - http://code.google.com/p/th9x
* er9x - http://code.google.com/p/er9x
* gruvin9x - http://code.google.com/p/gruvin9x
*
* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#if defined(USBJ_EX)
#include "usb_joystick.h"
#else
#include "edgetx_helpers.h"
#include "dataconstants.h"
#include "globals.h"
#endif
extern "C" {
#include "usbd_conf.h"
#include "usbd_core.h"
#include "usbd_msc.h"
#include "usbd_desc.h"
#include "usbd_hid.h"
#include "usbd_cdc.h"
#include "usbd_dfu.h"
}
#include "stm32_hal_ll.h"
#include "stm32_hal.h"
#include "stm32_gpio.h"
#include "hal/gpio.h"
#include "hal/usb_driver.h"
#include "hal.h"
#include "debug.h"
#if defined(USE_USB_HS)
#define DEVICE_ID DEVICE_HS
#else
#define DEVICE_ID DEVICE_FS
#endif
#if defined(BOOT)
// TODO: configured where needed
#define DEFAULT_USB_MODE USB_MASS_STORAGE_MODE;
#if defined(FIRMWARE_QSPI)
static const USBD_DFU_MediaTypeDef* _dfu_media[USBD_DFU_MAX_ITF_NUM] = {nullptr};
#endif
#else
#define DEFAULT_USB_MODE USB_UNSELECTED_MODE;
#endif
static bool usbDriverStarted = false;
static usbMode selectedUsbMode = DEFAULT_USB_MODE;
USBD_HandleTypeDef hUsbDevice;
int getSelectedUsbMode()
{
return selectedUsbMode;
}
void setSelectedUsbMode(int mode)
{
selectedUsbMode = usbMode(mode);
}
#if defined(USB_GPIO_VBUS)
int usbPlugged()
{
#if defined(DEBUG_DISABLE_USB) && !defined(BOOT)
return false;
#endif
static uint8_t debouncedState = 0;
static uint8_t lastState = 0;
#if defined(USB_GPIO_VBUS_OPEN_DRAIN)
uint8_t state = gpio_read(USB_GPIO_VBUS) ? 0 : 1;
#else
uint8_t state = gpio_read(USB_GPIO_VBUS) ? 1 : 0;
#endif
if (state == lastState)
debouncedState = state;
else
lastState = state;
return debouncedState;
}
#endif
extern PCD_HandleTypeDef hpcd_USB_OTG;
#if defined(USE_USB_HS)
extern "C" void OTG_HS_IRQHandler()
{
DEBUG_INTERRUPT(INT_OTG_FS);
HAL_PCD_IRQHandler(&hpcd_USB_OTG);
}
#else
extern "C" void OTG_FS_IRQHandler()
{
DEBUG_INTERRUPT(INT_OTG_FS);
HAL_PCD_IRQHandler(&hpcd_USB_OTG);
}
#endif
void usbInit()
{
#if defined(STM32H7)
HAL_PWREx_EnableUSBVoltageDetector();
#endif
gpio_init_af(USB_GPIO_DM, USB_GPIO_AF, GPIO_PIN_SPEED_VERY_HIGH);
gpio_init_af(USB_GPIO_DP, USB_GPIO_AF, GPIO_PIN_SPEED_VERY_HIGH);
#if defined(USB_GPIO_VBUS)
#if defined(USB_GPIO_VBUS_OPEN_DRAIN)
gpio_init(USB_GPIO_VBUS, GPIO_IN_PU, GPIO_PIN_SPEED_LOW);
#else
gpio_init(USB_GPIO_VBUS, GPIO_IN, GPIO_PIN_SPEED_LOW);
#endif
#if defined(USB_GPIO_SEL)
gpio_init(USB_GPIO_SEL, GPIO_OUT, GPIO_PIN_SPEED_LOW);
gpio_set(USB_GPIO_SEL);
#endif
// prime debounce state...
usbPlugged();
#endif
// TODO: seems this is only needed for USB wakeup,
// which we do not support.
#if !defined(STM32H7RS)
#if defined(LL_APB2_GRP1_PERIPH_SYSCFG)
LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
#elif defined(LL_APB4_GRP1_PERIPH_SYSCFG)
LL_APB4_GRP1_EnableClock(LL_APB4_GRP1_PERIPH_SYSCFG);
#else
#error "Unable to enable SYSCFG peripheral clock"
#endif
#endif
usbDriverStarted = false;
}
extern void usbInitLUNs();
extern USBD_HandleTypeDef hUsbDevice;
extern "C" USBD_StorageTypeDef USBD_Storage_Interface_fops;
extern USBD_CDC_ItfTypeDef USBD_Interface_fops;
extern USBD_DFU_MediaTypeDef USBD_DFU_MEDIA_fops;
void usbStart()
{
USBD_Init(&hUsbDevice, &FS_Desc, DEVICE_ID);
switch (getSelectedUsbMode()) {
case USB_MASS_STORAGE_MODE:
// initialize USB as MSC device
usbInitLUNs();
USBD_RegisterClass(&hUsbDevice, &USBD_MSC);
USBD_MSC_RegisterStorage(&hUsbDevice, &USBD_Storage_Interface_fops);
break;
#if defined(BOOT)
#if defined(FIRMWARE_QSPI)
case USB_DFU_MODE:
USBD_RegisterClass(&hUsbDevice, &USBD_DFU);
for (unsigned i = 0; i < USBD_DFU_MAX_ITF_NUM; i++){
if (_dfu_media[i] != nullptr) {
USBD_DFU_RegisterMedia(&hUsbDevice,
(USBD_DFU_MediaTypeDef*)_dfu_media[i]);
}
}
break;
#endif // !defined(STM32H7) && !defined(STM32H7RS)
#else
case USB_JOYSTICK_MODE:
// initialize USB as HID device
#if defined(USBJ_EX)
setupUSBJoystick();
#endif
USBD_RegisterClass(&hUsbDevice, &USBD_HID);
break;
#if defined(USB_SERIAL)
case USB_SERIAL_MODE:
// initialize USB as CDC device (virtual serial port)
USBD_RegisterClass(&hUsbDevice, &USBD_CDC);
USBD_CDC_RegisterInterface(&hUsbDevice, &USBD_Interface_fops);
break;
#endif
#endif
default:
return;
}
if (USBD_Start(&hUsbDevice) == USBD_OK) {
usbDriverStarted = true;
}
}
void usbStop()
{
usbDriverStarted = false;
USBD_DeInit(&hUsbDevice);
}
bool usbStarted()
{
return usbDriverStarted;
}
#if defined(BOOT)
#if defined(FIRMWARE_QSPI)
int usbRegisterDFUMedia(const void* dfu_media)
{
for (unsigned i = 0; i < USBD_DFU_MAX_ITF_NUM; i++) {
if (_dfu_media[i] == nullptr) {
_dfu_media[i] = (const USBD_DFU_MediaTypeDef*)dfu_media;
return 0;
}
}
return -1;
}
#endif // !defined(FIRMWARE_QSPI)
#else // !BOOT
#if defined(USBJ_EX)
extern "C" void delay_ms(uint32_t count);
void usbJoystickRestart()
{
if (!usbDriverStarted || getSelectedUsbMode() != USB_JOYSTICK_MODE) return;
USBD_DeInit(&hUsbDevice);
delay_ms(100);
USBD_Init(&hUsbDevice, &FS_Desc, DEVICE_ID);
USBD_RegisterClass(&hUsbDevice, &USBD_HID);
USBD_Start(&hUsbDevice);
}
#endif
/*
Prepare and send new USB data packet
The format of HID_Buffer is defined by
USB endpoint description can be found in
file usb_hid_joystick.c, variable HID_JOYSTICK_ReportDesc
*/
void usbJoystickUpdate()
{
#if !defined(USBJ_EX)
static uint8_t HID_Buffer[HID_IN_PACKET];
//buttons
HID_Buffer[0] = 0;
HID_Buffer[1] = 0;
HID_Buffer[2] = 0;
for (int i = 0; i < 8; ++i) {
if ( channelOutputs[i+8] > 0 ) {
HID_Buffer[0] |= (1 << i);
}
if ( channelOutputs[i+16] > 0 ) {
HID_Buffer[1] |= (1 << i);
}
if ( channelOutputs[i+24] > 0 ) {
HID_Buffer[2] |= (1 << i);
}
}
//analog values
for (int i = 0; i < 8; ++i) {
int16_t value = limit<int16_t>(0, channelOutputs[i] + 1024, 2048);;
HID_Buffer[i*2 +3] = static_cast<uint8_t>(value & 0xFF);
HID_Buffer[i*2 +4] = static_cast<uint8_t>(value >> 8);
}
USBD_HID_SendReport(&hUsbDevice, HID_Buffer, HID_IN_PACKET);
#else
usbReport_t ret = usbReport();
USBD_HID_SendReport(&hUsbDevice, ret.ptr, ret.size);
#endif
}
#endif