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micropython/ports/stm32/usbd_conf.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*/
/**
******************************************************************************
* @file USB_Device/CDC_Standalone/Src/usbd_conf.c
* @author MCD Application Team
* @version V1.0.1
* @date 26-February-2014
* @brief This file implements the USB Device library callbacks and MSP
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
#include "usbd_core.h"
#include "py/obj.h"
#include "py/mphal.h"
#include "irq.h"
#include "usb.h"
#if MICROPY_HW_USB_FS || MICROPY_HW_USB_HS
#if MICROPY_HW_USB_FS
PCD_HandleTypeDef pcd_fs_handle;
#endif
#if MICROPY_HW_USB_HS
PCD_HandleTypeDef pcd_hs_handle;
#endif
#if defined(STM32G0) || defined(STM32H5)
#define USB_OTG_FS USB_DRD_FS
#elif !MICROPY_HW_USB_IS_MULTI_OTG
// The MCU has a single USB device-only instance
#define USB_OTG_FS USB
#endif
/*******************************************************************************
PCD BSP Routines
*******************************************************************************/
/**
* @brief Initializes the PCD MSP.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_MspInit(PCD_HandleTypeDef *hpcd) {
#if MICROPY_HW_USB_FS
if (hpcd->Instance == USB_OTG_FS) {
// Configure USB GPIO's.
#if defined(STM32G0) || defined(STM32G4)
// These MCUs don't have an alternate function for USB but rather require
// the pins to be disconnected from all peripherals, ie put in analog mode.
mp_hal_pin_config(pin_A11, MP_HAL_PIN_MODE_ANALOG, MP_HAL_PIN_PULL_NONE, 0);
mp_hal_pin_config_speed(pin_A11, GPIO_SPEED_FREQ_VERY_HIGH);
mp_hal_pin_config(pin_A12, MP_HAL_PIN_MODE_ANALOG, MP_HAL_PIN_PULL_NONE, 0);
mp_hal_pin_config_speed(pin_A12, GPIO_SPEED_FREQ_VERY_HIGH);
#elif defined(STM32L1)
// STM32L1 doesn't have an alternate function for USB.
// To be disconnected from all peripherals, put in input mode.
mp_hal_pin_config(pin_A11, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_NONE, 0);
mp_hal_pin_config_speed(pin_A11, GPIO_SPEED_FREQ_VERY_HIGH);
mp_hal_pin_config(pin_A12, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_NONE, 0);
mp_hal_pin_config_speed(pin_A12, GPIO_SPEED_FREQ_VERY_HIGH);
#else
// Other MCUs have an alternate function for GPIO's to be in USB mode.
#if defined(STM32H7)
const uint32_t otg_alt = GPIO_AF10_OTG1_FS;
#elif defined(STM32L0)
const uint32_t otg_alt = GPIO_AF0_USB;
#elif defined(STM32L432xx)
const uint32_t otg_alt = GPIO_AF10_USB_FS;
#elif defined(STM32H5) || defined(STM32WB)
const uint32_t otg_alt = GPIO_AF10_USB;
#else
const uint32_t otg_alt = GPIO_AF10_OTG_FS;
#endif
mp_hal_pin_config(pin_A11, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, otg_alt);
mp_hal_pin_config_speed(pin_A11, GPIO_SPEED_FREQ_VERY_HIGH);
mp_hal_pin_config(pin_A12, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, otg_alt);
mp_hal_pin_config_speed(pin_A12, GPIO_SPEED_FREQ_VERY_HIGH);
#endif
#if defined(MICROPY_HW_USB_VBUS_DETECT_PIN)
// USB VBUS detect pin is always A9
mp_hal_pin_config(MICROPY_HW_USB_VBUS_DETECT_PIN, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_NONE, 0);
#endif
#if defined(MICROPY_HW_USB_OTG_ID_PIN)
// USB ID pin is always A10
mp_hal_pin_config(MICROPY_HW_USB_OTG_ID_PIN, MP_HAL_PIN_MODE_ALT_OPEN_DRAIN, MP_HAL_PIN_PULL_UP, otg_alt);
#endif
// Keep USB clock running during sleep or else __WFI() will disable the USB
#if defined(STM32G0) || defined(STM32H5)
__HAL_RCC_USB_CLK_SLEEP_ENABLE();
#elif defined(STM32H7)
__HAL_RCC_USB2_OTG_FS_CLK_SLEEP_ENABLE();
__HAL_RCC_USB2_OTG_FS_ULPI_CLK_SLEEP_DISABLE();
#endif
// Enable USB FS Clocks
#if !MICROPY_HW_USB_IS_MULTI_OTG
__HAL_RCC_USB_CLK_ENABLE();
#else
__USB_OTG_FS_CLK_ENABLE();
#endif
// Enable VDDUSB
#if defined(STM32H5)
HAL_PWREx_EnableVddUSB();
#elif defined(STM32L4)
if (__HAL_RCC_PWR_IS_CLK_DISABLED()) {
__HAL_RCC_PWR_CLK_ENABLE();
HAL_PWREx_EnableVddUSB();
__HAL_RCC_PWR_CLK_DISABLE();
} else {
HAL_PWREx_EnableVddUSB();
}
#endif
// Configure and enable USB FS interrupt
#if defined(STM32G0)
NVIC_SetPriority(USB_UCPD1_2_IRQn, IRQ_PRI_OTG_FS);
HAL_NVIC_EnableIRQ(USB_UCPD1_2_IRQn);
#elif defined(STM32H5)
NVIC_SetPriority(USB_DRD_FS_IRQn, IRQ_PRI_OTG_FS);
HAL_NVIC_EnableIRQ(USB_DRD_FS_IRQn);
#elif defined(STM32L0)
NVIC_SetPriority(USB_IRQn, IRQ_PRI_OTG_FS);
HAL_NVIC_EnableIRQ(USB_IRQn);
#elif defined(STM32L432xx)
NVIC_SetPriority(USB_FS_IRQn, IRQ_PRI_OTG_FS);
HAL_NVIC_EnableIRQ(USB_FS_IRQn);
#elif defined(STM32G4) || defined(STM32L1) || defined(STM32WB)
NVIC_SetPriority(USB_LP_IRQn, IRQ_PRI_OTG_FS);
HAL_NVIC_EnableIRQ(USB_LP_IRQn);
#else
NVIC_SetPriority(OTG_FS_IRQn, IRQ_PRI_OTG_FS);
HAL_NVIC_EnableIRQ(OTG_FS_IRQn);
#endif
return;
}
#endif
#if MICROPY_HW_USB_HS
if (hpcd->Instance == USB_OTG_HS) {
#if MICROPY_HW_USB_HS_IN_FS
// Configure USB GPIO's.
#if defined(STM32H723xx)
// These MCUs don't have an alternate function for USB but rather require
// the pins to be disconnected from all peripherals, ie put in analog mode.
#if defined(MICROPY_HW_USB_OTG_ID_PIN)
const uint32_t otg_alt = GPIO_AF10_OTG1_FS;
#endif
mp_hal_pin_config(pin_A11, MP_HAL_PIN_MODE_ANALOG, MP_HAL_PIN_PULL_NONE, 0);
mp_hal_pin_config_speed(pin_A11, GPIO_SPEED_FREQ_VERY_HIGH);
mp_hal_pin_config(pin_A12, MP_HAL_PIN_MODE_ANALOG, MP_HAL_PIN_PULL_NONE, 0);
mp_hal_pin_config_speed(pin_A12, GPIO_SPEED_FREQ_VERY_HIGH);
#else
// Other MCUs have an alternate function for GPIO's to be in USB mode.
#if defined(STM32H7A3xx) || defined(STM32H7A3xxQ) || defined(STM32H7B3xx) || defined(STM32H7B3xxQ)
const uint32_t otg_alt = GPIO_AF10_OTG1_FS;
#elif defined(STM32H7)
const uint32_t otg_alt = GPIO_AF12_OTG2_FS;
#else
const uint32_t otg_alt = GPIO_AF12_OTG_HS_FS;
#endif
mp_hal_pin_config(pin_B14, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, otg_alt);
mp_hal_pin_config_speed(pin_B14, GPIO_SPEED_FREQ_VERY_HIGH);
mp_hal_pin_config(pin_B15, MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, otg_alt);
mp_hal_pin_config_speed(pin_B15, GPIO_SPEED_FREQ_VERY_HIGH);
#endif
#if defined(MICROPY_HW_USB_VBUS_DETECT_PIN)
// Configure VBUS Pin
mp_hal_pin_config(MICROPY_HW_USB_VBUS_DETECT_PIN, MP_HAL_PIN_MODE_INPUT, MP_HAL_PIN_PULL_NONE, 0);
#endif
#if defined(MICROPY_HW_USB_OTG_ID_PIN)
// Configure ID pin
mp_hal_pin_config(MICROPY_HW_USB_OTG_ID_PIN, MP_HAL_PIN_MODE_ALT_OPEN_DRAIN, MP_HAL_PIN_PULL_UP, otg_alt);
#endif
// Enable calling WFI and correct function of the embedded USB_FS_IN_HS phy
__HAL_RCC_USB_OTG_HS_ULPI_CLK_SLEEP_DISABLE();
__HAL_RCC_USB_OTG_HS_CLK_SLEEP_ENABLE();
// Enable USB HS Clocks
#if defined(STM32F723xx) || defined(STM32F733xx)
// Needs to remain awake during sleep or else __WFI() will disable the USB
__HAL_RCC_USB_OTG_HS_ULPI_CLK_SLEEP_ENABLE();
__HAL_RCC_OTGPHYC_CLK_ENABLE();
__HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE();
#endif
__HAL_RCC_USB_OTG_HS_CLK_ENABLE();
#else // !MICROPY_HW_USB_HS_IN_FS
// Configure USB HS GPIOs
static const mp_hal_pin_obj_t usb_pins[] = {
pin_A5, pin_C0, MICROPY_HW_USB_HS_ULPI_NXT, MICROPY_HW_USB_HS_ULPI_DIR, // CLK, STP, NXT, DIR
pin_A3, pin_B0, pin_B1, pin_B5, pin_B10, pin_B11, pin_B12, pin_B13, // D0-D7
};
for (size_t i = 0; i < MP_ARRAY_SIZE(usb_pins); ++i) {
mp_hal_pin_config(usb_pins[i], MP_HAL_PIN_MODE_ALT, MP_HAL_PIN_PULL_NONE, GPIO_AF10_OTG_HS);
mp_hal_pin_config_speed(usb_pins[i], GPIO_SPEED_FREQ_VERY_HIGH);
}
// Enable USB HS Clocks
__HAL_RCC_USB_OTG_HS_CLK_ENABLE();
__HAL_RCC_USB_OTG_HS_CLK_SLEEP_ENABLE();
__HAL_RCC_USB_OTG_HS_ULPI_CLK_ENABLE();
__HAL_RCC_USB_OTG_HS_ULPI_CLK_SLEEP_ENABLE();
#endif // !MICROPY_HW_USB_HS_IN_FS
// Configure and enable USB HS interrupt
NVIC_SetPriority(OTG_HS_IRQn, IRQ_PRI_OTG_HS);
HAL_NVIC_EnableIRQ(OTG_HS_IRQn);
}
#endif // MICROPY_HW_USB_HS
}
/**
* @brief DeInitializes the PCD MSP.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_MspDeInit(PCD_HandleTypeDef *hpcd) {
#if !MICROPY_HW_USB_IS_MULTI_OTG
__HAL_RCC_USB_CLK_DISABLE();
#else
#if MICROPY_HW_USB_FS
if (hpcd->Instance == USB_OTG_FS) {
/* Disable USB FS Clocks */
__USB_OTG_FS_CLK_DISABLE();
return;
}
#endif
#if MICROPY_HW_USB_HS
if (hpcd->Instance == USB_OTG_HS) {
/* Disable USB FS Clocks */
__USB_OTG_HS_CLK_DISABLE();
}
#endif
#endif
}
/*******************************************************************************
LL Driver Callbacks (PCD -> USB Device Library)
*******************************************************************************/
/**
* @brief Setup stage callback.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_SetupStageCallback(PCD_HandleTypeDef *hpcd) {
USBD_LL_SetupStage(hpcd->pData, (uint8_t *)hpcd->Setup);
}
/**
* @brief Data Out stage callback.
* @param hpcd: PCD handle
* @param epnum: Endpoint Number
* @retval None
*/
void HAL_PCD_DataOutStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) {
USBD_LL_DataOutStage(hpcd->pData, epnum, hpcd->OUT_ep[epnum].xfer_buff);
}
/**
* @brief Data In stage callback.
* @param hpcd: PCD handle
* @param epnum: Endpoint Number
* @retval None
*/
void HAL_PCD_DataInStageCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) {
USBD_LL_DataInStage(hpcd->pData, epnum, hpcd->IN_ep[epnum].xfer_buff);
}
/**
* @brief SOF callback.
* @param hpcd: PCD handle
* @retval None
*/
/*
This is now handled by the USB CDC interface.
void HAL_PCD_SOFCallback(PCD_HandleTypeDef *hpcd)
{
USBD_LL_SOF(hpcd->pData);
}
*/
/**
* @brief Reset callback.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_ResetCallback(PCD_HandleTypeDef *hpcd) {
USBD_SpeedTypeDef speed = USBD_SPEED_FULL;
// Set USB Current Speed
switch (hpcd->Init.speed) {
#if defined(PCD_SPEED_HIGH)
case PCD_SPEED_HIGH:
speed = USBD_SPEED_HIGH;
break;
#endif
case PCD_SPEED_FULL:
speed = USBD_SPEED_FULL;
break;
default:
speed = USBD_SPEED_FULL;
break;
}
USBD_LL_SetSpeed(hpcd->pData, speed);
// Reset Device
USBD_LL_Reset(hpcd->pData);
}
/**
* @brief Suspend callback.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_SuspendCallback(PCD_HandleTypeDef *hpcd) {
USBD_LL_Suspend(hpcd->pData);
}
/**
* @brief Resume callback.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_ResumeCallback(PCD_HandleTypeDef *hpcd) {
USBD_LL_Resume(hpcd->pData);
}
/**
* @brief ISOC Out Incomplete callback.
* @param hpcd: PCD handle
* @param epnum: Endpoint Number
* @retval None
*/
void HAL_PCD_ISOOUTIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) {
USBD_LL_IsoOUTIncomplete(hpcd->pData, epnum);
}
/**
* @brief ISOC In Incomplete callback.
* @param hpcd: PCD handle
* @param epnum: Endpoint Number
* @retval None
*/
void HAL_PCD_ISOINIncompleteCallback(PCD_HandleTypeDef *hpcd, uint8_t epnum) {
USBD_LL_IsoINIncomplete(hpcd->pData, epnum);
}
/**
* @brief Connect callback.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_ConnectCallback(PCD_HandleTypeDef *hpcd) {
USBD_LL_DevConnected(hpcd->pData);
}
/**
* @brief Disconnect callback.
* @param hpcd: PCD handle
* @retval None
*/
void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd) {
USBD_LL_DevDisconnected(hpcd->pData);
}
/*******************************************************************************
LL Driver Interface (USB Device Library --> PCD)
*******************************************************************************/
/**
* @brief Initializes the Low Level portion of the Device driver.
* @param pdev: Device handle
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_Init(USBD_HandleTypeDef *pdev, int high_speed, const uint8_t *fifo_size) {
#if MICROPY_HW_USB_FS
if (pdev->id == USB_PHY_FS_ID) {
#if defined(STM32WB)
PWR->CR2 |= PWR_CR2_USV; // USB supply is valid
#endif
// Set LL Driver parameters
pcd_fs_handle.Instance = USB_OTG_FS;
#if MICROPY_HW_USB_CDC_NUM == 2
pcd_fs_handle.Init.dev_endpoints = 6;
#else
pcd_fs_handle.Init.dev_endpoints = 4;
#endif
pcd_fs_handle.Init.ep0_mps = 0x40;
pcd_fs_handle.Init.low_power_enable = 0;
pcd_fs_handle.Init.phy_itface = PCD_PHY_EMBEDDED;
pcd_fs_handle.Init.Sof_enable = 0;
pcd_fs_handle.Init.speed = PCD_SPEED_FULL;
pcd_fs_handle.Init.lpm_enable = DISABLE;
pcd_fs_handle.Init.battery_charging_enable = DISABLE;
#if MICROPY_HW_USB_IS_MULTI_OTG || defined(STM32G0) || defined(STM32H5)
#if !defined(STM32G0) && !defined(STM32H5)
pcd_fs_handle.Init.use_dedicated_ep1 = 0;
#endif
pcd_fs_handle.Init.dma_enable = 0;
#if !defined(MICROPY_HW_USB_VBUS_DETECT_PIN)
pcd_fs_handle.Init.vbus_sensing_enable = 0; // No VBUS Sensing on USB0
#else
pcd_fs_handle.Init.vbus_sensing_enable = 1;
#endif
#endif
#if defined(STM32G0) || defined(STM32H5)
pcd_fs_handle.Init.bulk_doublebuffer_enable = DISABLE;
pcd_fs_handle.Init.iso_singlebuffer_enable = DISABLE;
#endif
// Link The driver to the stack
pcd_fs_handle.pData = pdev;
pdev->pData = &pcd_fs_handle;
// Initialize LL Driver
HAL_PCD_Init(&pcd_fs_handle);
// Set FIFO buffer sizes
#if !MICROPY_HW_USB_IS_MULTI_OTG
uint32_t fifo_offset = USBD_PMA_RESERVE; // need to reserve some data at start of FIFO
for (size_t i = 0; i < USBD_PMA_NUM_FIFO; ++i) {
uint16_t ep_addr = ((i & 1) * 0x80) | (i >> 1);
HAL_PCDEx_PMAConfig(&pcd_fs_handle, ep_addr, PCD_SNG_BUF, fifo_offset);
fifo_offset += fifo_size[i] * 4;
}
#else
HAL_PCD_SetRxFiFo(&pcd_fs_handle, fifo_size[0] * 4);
for (size_t i = 0; i < USBD_FS_NUM_TX_FIFO; ++i) {
HAL_PCD_SetTxFiFo(&pcd_fs_handle, i, fifo_size[1 + i] * 4);
}
#endif
}
#endif
#if MICROPY_HW_USB_HS
if (pdev->id == USB_PHY_HS_ID) {
// Set LL Driver parameters
pcd_hs_handle.Instance = USB_OTG_HS;
#if MICROPY_HW_USB_CDC_NUM == 3
pcd_hs_handle.Init.dev_endpoints = 8;
#else
pcd_hs_handle.Init.dev_endpoints = 6;
#endif
pcd_hs_handle.Init.use_dedicated_ep1 = 0;
pcd_hs_handle.Init.ep0_mps = 0x40;
pcd_hs_handle.Init.dma_enable = 0;
pcd_hs_handle.Init.low_power_enable = 0;
pcd_hs_handle.Init.lpm_enable = DISABLE;
pcd_hs_handle.Init.battery_charging_enable = DISABLE;
pcd_hs_handle.Init.Sof_enable = 0;
pcd_hs_handle.Init.use_external_vbus = 0;
#if !defined(MICROPY_HW_USB_VBUS_DETECT_PIN)
pcd_hs_handle.Init.vbus_sensing_enable = 0; // No VBUS Sensing on USB0
#else
pcd_hs_handle.Init.vbus_sensing_enable = 1;
#endif
#if MICROPY_HW_USB_HS_IN_FS
#if defined(STM32F723xx) || defined(STM32F733xx)
pcd_hs_handle.Init.phy_itface = USB_OTG_HS_EMBEDDED_PHY;
#else
pcd_hs_handle.Init.phy_itface = PCD_PHY_EMBEDDED;
#endif
if (high_speed) {
pcd_hs_handle.Init.speed = PCD_SPEED_HIGH;
} else {
pcd_hs_handle.Init.speed = PCD_SPEED_HIGH_IN_FULL;
}
#else
// USB HS with external PHY
pcd_hs_handle.Init.phy_itface = PCD_PHY_ULPI;
pcd_hs_handle.Init.speed = PCD_SPEED_HIGH;
#endif
// Link The driver to the stack
pcd_hs_handle.pData = pdev;
pdev->pData = &pcd_hs_handle;
// Initialize LL Driver
HAL_PCD_Init(&pcd_hs_handle);
// Set FIFO buffer sizes
fifo_size += USBD_FS_NUM_FIFO; // skip over FS FIFO size values
HAL_PCD_SetRxFiFo(&pcd_hs_handle, fifo_size[0] * 4);
for (size_t i = 0; i < USBD_HS_NUM_TX_FIFO; ++i) {
HAL_PCD_SetTxFiFo(&pcd_hs_handle, i, fifo_size[1 + i] * 4);
}
}
#endif // MICROPY_HW_USB_HS
return USBD_OK;
}
/**
* @brief De-Initializes the Low Level portion of the Device driver.
* @param pdev: Device handle
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_DeInit(USBD_HandleTypeDef *pdev) {
HAL_PCD_DeInit(pdev->pData);
return USBD_OK;
}
/**
* @brief Starts the Low Level portion of the Device driver.
* @param pdev: Device handle
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_Start(USBD_HandleTypeDef *pdev) {
HAL_PCD_Start(pdev->pData);
return USBD_OK;
}
/**
* @brief Stops the Low Level portion of the Device driver.
* @param pdev: Device handle
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_Stop(USBD_HandleTypeDef *pdev) {
HAL_PCD_Stop(pdev->pData);
return USBD_OK;
}
/**
* @brief Opens an endpoint of the Low Level Driver.
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @param ep_type: Endpoint Type
* @param ep_mps: Endpoint Max Packet Size
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_OpenEP(USBD_HandleTypeDef *pdev,
uint8_t ep_addr, uint8_t ep_type, uint16_t ep_mps) {
HAL_PCD_EP_Open(pdev->pData, ep_addr, ep_mps, ep_type);
return USBD_OK;
}
/**
* @brief Closes an endpoint of the Low Level Driver.
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_CloseEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr) {
HAL_PCD_EP_Close(pdev->pData, ep_addr);
return USBD_OK;
}
/**
* @brief Flushes an endpoint of the Low Level Driver.
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_FlushEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr) {
HAL_PCD_EP_Flush(pdev->pData, ep_addr);
return USBD_OK;
}
/**
* @brief Sets a Stall condition on an endpoint of the Low Level Driver.
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_StallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr) {
HAL_PCD_EP_SetStall(pdev->pData, ep_addr);
return USBD_OK;
}
/**
* @brief Clears a Stall condition on an endpoint of the Low Level Driver.
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_ClearStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr) {
HAL_PCD_EP_ClrStall(pdev->pData, ep_addr);
return USBD_OK;
}
/**
* @brief Returns Stall condition.
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @retval Stall (1: yes, 0: No)
*/
uint8_t USBD_LL_IsStallEP(USBD_HandleTypeDef *pdev, uint8_t ep_addr) {
PCD_HandleTypeDef *hpcd = pdev->pData;
if ((ep_addr & 0x80) == 0x80) {
return hpcd->IN_ep[ep_addr & 0x7F].is_stall;
} else {
return hpcd->OUT_ep[ep_addr & 0x7F].is_stall;
}
}
/**
* @brief Assigns an USB address to the device
* @param pdev: Device handle
* @param dev_addr: USB address
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_SetUSBAddress(USBD_HandleTypeDef *pdev, uint8_t dev_addr) {
HAL_PCD_SetAddress(pdev->pData, dev_addr);
return USBD_OK;
}
/**
* @brief Transmits data over an endpoint
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @param pbuf: Pointer to data to be sent
* @param size: Data size
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_Transmit(USBD_HandleTypeDef *pdev,
uint8_t ep_addr, uint8_t *pbuf, uint16_t size) {
HAL_PCD_EP_Transmit(pdev->pData, ep_addr, pbuf, size);
return USBD_OK;
}
/**
* @brief Prepares an endpoint for reception
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @param pbuf:pointer to data to be received
* @param size: data size
* @retval USBD Status
*/
USBD_StatusTypeDef USBD_LL_PrepareReceive(USBD_HandleTypeDef *pdev,
uint8_t ep_addr, uint8_t *pbuf, uint16_t size) {
HAL_PCD_EP_Receive(pdev->pData, ep_addr, pbuf, size);
return USBD_OK;
}
/**
* @brief Returns the last transferred packet size.
* @param pdev: Device handle
* @param ep_addr: Endpoint Number
* @retval Received Data Size
*/
uint32_t USBD_LL_GetRxDataSize(USBD_HandleTypeDef *pdev, uint8_t ep_addr) {
return HAL_PCD_EP_GetRxCount(pdev->pData, ep_addr);
}
/**
* @brief Delay routine for the USB Device Library
* @param Delay: Delay in ms
* @retval None
*/
void USBD_LL_Delay(uint32_t Delay) {
HAL_Delay(Delay);
}
#if defined(STM32L1)
/**
* @brief Software Device Connection
* @param hpcd: PCD handle
* @param state: Connection state (0: disconnected / 1: connected)
* @retval None
*/
void HAL_PCDEx_SetConnectionState(PCD_HandleTypeDef *hpcd, uint8_t state) {
if (state == 1) {
/* DP Pull-Down is Internal */
__HAL_SYSCFG_USBPULLUP_ENABLE();
} else {
/* DP Pull-Down is Internal */
__HAL_SYSCFG_USBPULLUP_DISABLE();
}
}
#endif
#endif // MICROPY_HW_USB_FS || MICROPY_HW_USB_HS
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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