mirror of
https://github.com/espressif/esp-idf
synced 2025-03-22 15:39:13 -04:00
24011ddd05
1. timer reg file for both time group 0 and time group 1, not only timer group 0 2. fix bug that io mux header file mismatch with chip 3. fix bug that some BASE address not correct 4. add some static function to eagle.fpga32.rom.addr.v7.ld 5. add interrupts usage table 6. add some comments for rom code functions
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef ROM_CRC_H
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#define ROM_CRC_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \defgroup uart_apis, uart configuration and communication related apis
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* @brief uart apis
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*/
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/** @addtogroup uart_apis
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* @{
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*/
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/* Standard CRC8/16/32 algorithms. */
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// CRC-8 x8+x2+x1+1 0x07
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// CRC16-CCITT x16+x12+x5+1 1021 ISO HDLC, ITU X.25, V.34/V.41/V.42, PPP-FCS
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// CRC32:
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//G(x) = x32 +x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x1 + 1
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//If your buf is not continuous, you can use the first result to be the second parameter.
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/**
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* @brief Crc32 value that is in little endian.
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*
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* @param uint32_t crc : init crc value, use 0 at the first use.
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*
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* @param uint8_t const * buf : buffer to start calculate crc.
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*
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* @param uint32_t len : buffer length in byte.
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*
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* @return None
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*/
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uint32_t crc32_le(uint32_t crc, uint8_t const * buf, uint32_t len);
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/**
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* @brief Crc32 value that is in big endian.
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*
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* @param uint32_t crc : init crc value, use 0 at the first use.
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*
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* @param uint8_t const * buf : buffer to start calculate crc.
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*
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* @param uint32_t len : buffer length in byte.
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*
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* @return None
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*/
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uint32_t crc32_be(uint32_t crc, uint8_t const * buf, uint32_t len);
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/**
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* @brief Crc16 value that is in little endian.
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*
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* @param uint16_t crc : init crc value, use 0 at the first use.
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*
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* @param uint8_t const * buf : buffer to start calculate crc.
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*
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* @param uint32_t len : buffer length in byte.
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*
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* @return None
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*/
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uint16_t crc16_le(uint16_t crc, uint8_t const * buf, uint32_t len);
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/**
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* @brief Crc16 value that is in big endian.
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*
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* @param uint16_t crc : init crc value, use 0 at the first use.
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*
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* @param uint8_t const * buf : buffer to start calculate crc.
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*
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* @param uint32_t len : buffer length in byte.
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*
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* @return None
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*/
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uint16_t crc16_be(uint16_t crc, uint8_t const * buf, uint32_t len);
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/**
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* @brief Crc8 value that is in little endian.
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*
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* @param uint8_t crc : init crc value, use 0 at the first use.
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*
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* @param uint8_t const * buf : buffer to start calculate crc.
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*
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* @param uint32_t len : buffer length in byte.
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*
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* @return None
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*/
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uint8_t crc8_le(uint8_t crc, uint8_t const * buf, uint32_t len);
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/**
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* @brief Crc8 value that is in big endian.
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*
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* @param uint32_t crc : init crc value, use 0 at the first use.
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*
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* @param uint8_t const * buf : buffer to start calculate crc.
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*
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* @param uint32_t len : buffer length in byte.
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*
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* @return None
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*/
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uint8_t crc8_be(uint8_t crc, uint8_t const * buf, uint32_t len);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif
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