| Author | Matthew Schinkel, copyright © 2009..2022, all rights reserved. |
| Adapted-by | |
| Compiler | 2.5r9 |
this library provides functions for SD memory cards.
SanDisk Secure Digital Card - http://www.cs.ucr.edu/~amitra/sdcard/ProdManualSDCardv1.9.pdf How to use MMC/SDC - http://forums.parallax.com/forums/attach.aspx?a=32012 http://www.rjhcoding.com/avrc-sd-interface-3.php
SD card SPI mode is 1,1
No dependency found
var byte _crc7_accumulator_crc = 0
var byte _crc_error_type_crc = CRC_ERROR_SUCCESS
var bit _crc7_calculation_complete_crc = FALSE
var bit _crc_error_occurred_crc = FALSE
const byte CRC7_POLYNOMIAL = 0x89
var word _crc7_bytes_processed_crc = 0
var byte _crc7_final_result_crc = 0
var word _crc7_total_bytes_expected_crc = 0
crc7_verify_large_array_dwords(word in length, byte in expected) return bit
crc7_calculate_large_array_dwords(word in length) return byte
crc7_verify_data(byte in data[], word in length, byte in expected) return bit
crc7_calculate_large_array_words(word in length) return byte
crc7_verify_large_array_words(word in length, byte in expected) return bit
crc7_verify(byte in calculated, byte in expected) return bit
crc7_get_result() return byte
crc7_calculate_array_bytes(byte in data[], word in length) return byte
crc7_get_error_type() return byte
crc7_has_error() return bit
crc7_verify_large_array(word in length, byte in expected) return bit
crc7_calculate_large_array_bytes(word in length) return byte
crc7_is_complete() return bit
var byte _crc7_accumulator_crc = 0
No documentation found
var byte _crc_error_type_crc = CRC_ERROR_SUCCESS
No documentation found
var bit _crc7_calculation_complete_crc = FALSE
CRC7 state variables
var bit _crc_error_occurred_crc = FALSE
No documentation found
const byte CRC7_POLYNOMIAL = 0x89
No documentation found
var word _crc7_bytes_processed_crc = 0
No documentation found
var byte _crc7_final_result_crc = 0
No documentation found
var word _crc7_total_bytes_expected_crc = 0
No documentation found
crc7_calculate_bytes(byte in data)
Calculate CRC7 for a single byte (incremental processing) Parameters: data - single byte to process Updates internal CRC state with new data byte
crc7_start(word in expected_bytes)
Start CRC7 calculation with expected byte count Parameters: expected_bytes - total number of bytes to be processed Initializes CRC calculation state and sets up for incremental processing
crc7_reset()
Reset CRC7 calculation state Clears all internal state and error flags Call this to start fresh after an error or to reuse the library
crc7_verify_large_array_dwords(word in length, byte in expected) return bit
Verify CRC7 for large array (dwords) Parameters: length - number of dwords to verify, expected - expected CRC Returns: TRUE if calculated CRC matches expected, FALSE otherwise Calculates CRC for dwords from large_array_6 and compares with expected value
crc7_calculate_large_array_dwords(word in length) return byte
Calculate CRC7 for large array (dwords) Parameters: length - number of dwords to process from large_array_6 Returns: calculated CRC7 value Processes dwords from large_array_6 alias (MSB first)
crc7_verify_data(byte in data[], word in length, byte in expected) return bit
Verify CRC7 for data array Parameters: data[] - array to verify, length - number of bytes, expected - expected CRC Returns: TRUE if calculated CRC matches expected, FALSE otherwise Calculates CRC for array and compares with expected value
crc7_calculate_large_array_words(word in length) return byte
Calculate CRC7 for large array (words) Parameters: length - number of words to process from large_array_5 Returns: calculated CRC7 value Processes words from large_array_5 alias (MSB first)
crc7_verify_large_array_words(word in length, byte in expected) return bit
Verify CRC7 for large array (words) Parameters: length - number of words to verify, expected - expected CRC Returns: TRUE if calculated CRC matches expected, FALSE otherwise Calculates CRC for words from large_array_5 and compares with expected value
crc7_verify(byte in calculated, byte in expected) return bit
Verify CRC7 result Parameters: calculated - computed CRC value, expected - expected CRC value Returns: TRUE if CRC values match, FALSE otherwise Compares calculated CRC against expected value for validation
crc7_get_result() return byte
Get final CRC7 result Returns: calculated CRC7 value Marks calculation as complete and returns the final CRC result
crc7_calculate_array_bytes(byte in data[], word in length) return byte
Calculate CRC7 for byte array (one-shot calculation) Parameters: data[] - array of bytes to process, length - number of bytes Returns: calculated CRC7 value Processes entire array in one operation
crc7_get_error_type() return byte
Get CRC7 error type Returns: error type code Returns the specific type of error that occurred during calculation
crc7_has_error() return bit
Check if CRC7 calculation has an error Returns: TRUE if error occurred, FALSE otherwise Indicates whether an error was detected during CRC calculation
crc7_verify_large_array(word in length, byte in expected) return bit
Verify CRC7 for large array (bytes) Parameters: length - number of bytes to verify, expected - expected CRC Returns: TRUE if calculated CRC matches expected, FALSE otherwise Calculates CRC for bytes from large_array_4 and compares with expected value
crc7_calculate_large_array_bytes(word in length) return byte
Calculate CRC7 for large array (bytes) Parameters: length - number of bytes to process from large_array_4 Returns: calculated CRC7 value Processes bytes from large_array_4 alias
crc7_is_complete() return bit
Check if CRC7 calculation is complete Returns: TRUE if calculation is complete, FALSE otherwise Indicates whether the CRC calculation has been finalized
| 18f67j50 | 18f67j50_crc7_bitwise.jal |