esp-idf/components/hal/usb_phy_hal.c

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/*
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "hal/usb_phy_ll.h"
#include "hal/usb_phy_hal.h"
void usb_phy_hal_init(usb_phy_hal_context_t *hal)
{
hal->wrap_dev = &USB_WRAP;
#if SOC_USB_SERIAL_JTAG_SUPPORTED
hal->jtag_dev = &USB_SERIAL_JTAG;
#endif
}
void usb_phy_hal_otg_conf(usb_phy_hal_context_t *hal, usb_phy_target_t phy_target)
{
if (phy_target == USB_PHY_TARGET_EXT) {
usb_phy_ll_ext_otg_enable(hal->wrap_dev);
} else if (phy_target == USB_PHY_TARGET_INT) {
usb_phy_ll_usb_wrap_pad_enable(hal->wrap_dev, true);
usb_phy_ll_int_otg_enable(hal->wrap_dev);
}
}
#if SOC_USB_SERIAL_JTAG_SUPPORTED
void usb_phy_hal_jtag_conf(usb_phy_hal_context_t *hal, usb_phy_target_t phy_target)
{
if (phy_target == USB_PHY_TARGET_EXT) {
usb_phy_ll_ext_jtag_enable(hal->jtag_dev);
} else if (phy_target == USB_PHY_TARGET_INT) {
usb_phy_ll_int_jtag_enable(hal->jtag_dev);
}
}
#endif
void usb_phy_hal_int_load_conf_host(usb_phy_hal_context_t *hal)
{
// HOST - upstream: dp_pd = 1, dm_pd = 1
usb_phy_ll_int_load_conf(hal->wrap_dev, false, true, false, true);
}
void usb_phy_hal_int_load_conf_dev(usb_phy_hal_context_t *hal, usb_phy_speed_t speed)
{
// DEVICE - downstream
if (speed == USB_PHY_SPEED_LOW) {
// LS: dm_pu = 1
usb_phy_ll_int_load_conf(hal->wrap_dev, false, false, true, false);
} else {
// FS: dp_pu = 1
usb_phy_ll_int_load_conf(hal->wrap_dev, true, false, false, false);
}
}
void usb_phy_hal_int_mimick_disconn(usb_phy_hal_context_t *hal, bool disconn)
{
/*
We mimick a disconnect by enabling the internal PHY's test mode, then forcing the output_enable to HIGH. This will:
A HIGH output_enable will cause the received VP and VM to be zero, thus mimicking a disconnection.
*/
usb_phy_ll_int_enable_test_mode(hal->wrap_dev, disconn);
}