upload version v2.0.0

libraries/drivers/src/at32f413_crc.c

@@ -0,0 +1,164 @@
+/**
+  **************************************************************************
+  * @file     at32f413_crc.c
+  * @version  v2.0.0
+  * @date     2021-11-26
+  * @brief    contains all the functions for the crc firmware library
+  **************************************************************************
+  *                       Copyright notice & Disclaimer
+  *
+  * The software Board Support Package (BSP) that is made available to 
+  * download from Artery official website is the copyrighted work of Artery. 
+  * Artery authorizes customers to use, copy, and distribute the BSP 
+  * software and its related documentation for the purpose of design and 
+  * development in conjunction with Artery microcontrollers. Use of the 
+  * software is governed by this copyright notice and the following disclaimer.
+  *
+  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
+  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
+  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
+  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
+  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
+  *
+  **************************************************************************
+  */
+
+#include "at32f413_conf.h"
+
+/** @addtogroup AT32F413_periph_driver
+  * @{
+  */
+
+/** @defgroup CRC
+  * @brief CRC driver modules
+  * @{
+  */
+
+#ifdef CRC_MODULE_ENABLED
+
+/** @defgroup CRC_private_functions
+  * @{
+  */
+
+/**
+  * @brief  reset the crc data register.
+  * @param  none
+  * @retval none
+  */
+void crc_data_reset(void)
+{
+  /* reset crc generator */
+  CRC->ctrl_bit.rst = 0x1;
+}
+
+/**
+  * @brief  compute the 32-bit crc of a given data word(32-bit).
+  * @param  data: data word(32-bit) to compute its crc
+  * @retval 32-bit crc
+  */
+uint32_t crc_one_word_calculate(uint32_t data)
+{
+  CRC->dt = data;
+  return (CRC->dt);
+}
+
+/**
+  * @brief  compute the 32-bit crc of a given buffer of data word(32-bit).
+  * @param  pbuffer: pointer to the buffer containing the data to be computed
+  * @param  length: length of the buffer to be computed
+  * @retval 32-bit crc
+  */
+uint32_t crc_block_calculate(uint32_t *pbuffer, uint32_t length)
+{
+  uint32_t index = 0;
+
+  for(index = 0; index < length; index++)
+  {
+    CRC->dt = pbuffer[index];
+  }
+
+  return (CRC->dt);
+}
+
+/**
+  * @brief  return the current crc value.
+  * @param  none
+  * @retval 32-bit crc
+  */
+uint32_t crc_data_get(void)
+{
+  return (CRC->dt);
+}
+
+/**
+  * @brief  store a 8-bit data in the common data register.
+  * @param  cdt_value: 8-bit value to be stored in the common data register
+  * @retval none
+  */
+void crc_common_data_set(uint8_t cdt_value)
+{
+  CRC->cdt_bit.cdt = cdt_value;
+}
+
+/**
+  * @brief  return the 8-bit data stored in the common data register
+  * @param  none
+  * @retval 8-bit value of the common data register
+  */
+uint8_t crc_common_date_get(void)
+{
+  return (CRC->cdt_bit.cdt);
+}
+
+/**
+  * @brief  set the 32-bit initial data of crc
+  * @param  value: initial data
+  * @retval none
+  */
+void crc_init_data_set(uint32_t value)
+{
+  CRC->idt = value;
+}
+
+/**
+  * @brief  control the reversal of the bit order in the input data
+  * @param  value
+  *         this parameter can be one of the following values:
+  *         - CRC_REVERSE_INPUT_NO_AFFECTE 
+  *         - CRC_REVERSE_INPUT_BY_BYTE
+  *         - CRC_REVERSE_INPUT_BY_HALFWORD
+  *         - CRC_REVERSE_INPUT_BY_WORD
+  * @retval none.
+  */
+void crc_reverse_input_data_set(crc_reverse_input_type value)
+{
+  CRC->ctrl_bit.revid = value;
+}
+
+/**
+  * @brief  control the reversal of the bit order in the output data
+  * @param  value
+  *         this parameter can be one of the following values:
+  *         - CRC_REVERSE_OUTPUT_NO_AFFECTE 
+  *         - CRC_REVERSE_OUTPUT_DATA
+  * @retval none.
+  */
+void crc_reverse_output_data_set(crc_reverse_output_type value)
+{
+  CRC->ctrl_bit.revod = value;
+}
+
+/**
+  * @}
+  */
+
+#endif
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */