Arrow / Mbed OS DAPLink Reset

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hic_init.c File Reference
Functions

hic_init.c File Reference

DAPLink Interface Firmware Copyright (c) 2009-2016, ARM Limited, All Rights Reserved Copyright (c) 2016-2017 NXP SPDX-License-Identifier: Apache-2.0. More...

Go to the source code of this file.

Functions

void sdk_init (void)
 
  • MPU is disabled and gated.

void hic_enable_usb_clocks (void)
 
  • Turn on 16MHz crystal oscillator.

Detailed Description

DAPLink Interface Firmware Copyright (c) 2009-2016, ARM Limited, All Rights Reserved Copyright (c) 2016-2017 NXP SPDX-License-Identifier: Apache-2.0.

Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0

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.

Definition in file hic_init.c.

Function Documentation

void hic_enable_usb_clocks ( void   )

  • Turn on 16MHz crystal oscillator.

Enable clocks required for USB operation.

  • Turn on 32kHz IRC.
  • Switch core clock to System PLL at 120 MHz, bus clock at 60 MHz, flash clock at 24 MHz.
  • Enable the 480MHz USB PHY PLL.
  • Ungate USBPHY and USBHS.
  • Configure the USB PHY.

Definition at line 96 of file hic_init.c.

void sdk_init ( void   )

  • MPU is disabled and gated.

  • 8kB cache is enabled. SRAM is not cached, so no flushing is required for normal operation.
  • Enable low voltage warning interrupt.
  • Disable USB current limiter so the voltage doesn't drop as we enable high speed clocks.

Definition at line 64 of file hic_init.c.

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