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Remove support for 7/8 bit CRC polynomials for K64F

pull/6708/head
Steven Cartmell 2018-04-27 16:45:06 +01:00
parent 5847f0c975
commit df93c0151c
2 changed files with 35 additions and 29 deletions
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30
hal/crc_api.h
View File

@ -1,3 +1,20 @@
/** \addtogroup hal */
/** @{*/
/* mbed Microcontroller Library
* Copyright (c) 2018 ARM Limited
*
* 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.
*/
#ifndef MBED_CRC_HAL_API_H #ifndef MBED_CRC_HAL_API_H
#define MBED_CRC_HAL_API_H #define MBED_CRC_HAL_API_H
@ -24,6 +41,15 @@ typedef enum crc_polynomial {
extern "C" { extern "C" {
#endif #endif
/**
* \defgroup hal_crc Hardware CRC
*
* The Hardware CRC HAL API provides a low-level interface to the Hardware CRC
* module of a target platform.
*
* @{
*/
/** Determine if the current platform supports hardware CRC for given polynomial /** Determine if the current platform supports hardware CRC for given polynomial
* *
* The purpose of this function is to inform the CRC Platform API whether the * The purpose of this function is to inform the CRC Platform API whether the
@ -122,9 +148,13 @@ void hal_crc_compute_partial(const uint8_t *data, const size_t size);
*/ */
uint32_t hal_crc_get_result(void); uint32_t hal_crc_get_result(void);
/**@}*/
#ifdef __cplusplus #ifdef __cplusplus
}; };
#endif #endif
#endif // DEVICE_CRC #endif // DEVICE_CRC
#endif // MBED_CRC_HAL_API_H #endif // MBED_CRC_HAL_API_H
/**@}*/

34
targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K64F/mbed_crc_api.c
View File

@ -11,12 +11,13 @@ bool hal_crc_is_supported(const uint32_t polynomial)
{ {
switch (polynomial) switch (polynomial)
{ {
case POLY_8BIT_CCITT:
case POLY_7BIT_SD:
case POLY_16BIT_CCITT: case POLY_16BIT_CCITT:
case POLY_16BIT_IBM: case POLY_16BIT_IBM:
case POLY_32BIT_ANSI: case POLY_32BIT_ANSI:
return true; return true;
case POLY_8BIT_CCITT:
case POLY_7BIT_SD:
return false;
default: default:
return false; return false;
} }
@ -70,34 +71,9 @@ void hal_crc_compute_partial_start(const uint32_t polynomial)
break; break;
} }
case POLY_8BIT_CCITT: default:
{ MBED_ASSERT("Configuring Mbed CRC with unsupported polynomial");
width = kCrcBits16;
config.polynomial = polynomial;
config.seed = 0U;
config.reflectIn = false;
config.reflectOut = false;
config.complementChecksum = false;
config.crcBits = width;
config.crcResult = kCrcFinalChecksum;
break; break;
}
case POLY_7BIT_SD:
{
width = kCrcBits16;
config.polynomial = polynomial;
config.seed = 0U;
config.reflectIn = false;
config.reflectOut = false;
config.complementChecksum = false;
config.crcBits = width;
config.crcResult = kCrcFinalChecksum;
break;
}
} }
CRC_Init(CRC0, &config); CRC_Init(CRC0, &config);