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imliubo
24 lines
718 B
C
24 lines
718 B
C
/*
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* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include "esp_log.h"
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#include "soc/rtc_cntl_struct.h"
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#include "soc/usb_serial_jtag_reg.h"
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/* Function used to tell the linker to include this file
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* with all its symbols.
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*/
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void bootloader_hooks_include(void)
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{
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}
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void bootloader_before_init(void)
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{
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// Disable D+ pullup, to prevent the USB host from retrieving USB-Serial-JTAG's descriptor.
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SET_PERI_REG_MASK(USB_SERIAL_JTAG_CONF0_REG, USB_SERIAL_JTAG_PAD_PULL_OVERRIDE);
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CLEAR_PERI_REG_MASK(USB_SERIAL_JTAG_CONF0_REG, USB_SERIAL_JTAG_DP_PULLUP);
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CLEAR_PERI_REG_MASK(USB_SERIAL_JTAG_CONF0_REG, USB_SERIAL_JTAG_USB_PAD_ENABLE);
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}
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