/**
* \brief Application entry point for CRCCU example.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
uint32_t ul_counter;
uint32_t ul_crc;
/* Initialize the system */
sysclk_init();
board_init();
/* Configure the console uart */
configure_console();
/* Output example information */
puts(STRING_HEADER);
/* Enable CRCCU peripheral clock */
pmc_enable_periph_clk(ID_CRCCU);
/* Initialize flash: 6 wait states for flash writing. */
flash_init(FLASH_ACCESS_MODE_128, FLASH_WAIT_STATE_NBR);
/* Unlock flash page. */
flash_unlock(FLASH_BUFFER_ADDRESS,
FLASH_BUFFER_ADDRESS + IFLASH_PAGE_SIZE - 1, NULL, NULL);
/* Fill data buffer in SRAM (The data may be random data) */
for (ul_counter = 0; ul_counter < BUFFER_LENGTH; ul_counter++) {
g_uc_data_buf[ul_counter] = ul_counter;
}
#if SAM4S || SAMG55
/* Fill data buffer in Flash, the data is same as in SRAM */
#if SAM4S
flash_erase_page(FLASH_BUFFER_ADDRESS,
IFLASH_ERASE_PAGES_8);
#else
flash_erase_page(FLASH_BUFFER_ADDRESS,
IFLASH_ERASE_PAGES_16);
#endif
flash_write(FLASH_BUFFER_ADDRESS,
(void *)g_uc_data_buf,
BUFFER_LENGTH, 0);
#else
flash_write(FLASH_BUFFER_ADDRESS,
(void *)g_uc_data_buf,
BUFFER_LENGTH, 1);
#endif
/* Test CRC with CCITT-16 polynomial */
puts("\n\r====Test CRC with CCITT 16 (0x1021) ====\r");
/* Compute CRC in SRAM */
puts("Test CRC in SRAM buffer\r");
ul_crc = compute_crc(g_uc_data_buf, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT16);
/* Compute CRC in Flash and compare it with the result in SRAM */
puts("Test CRC in Flash buffer\r");
compute_crc_and_compare((uint8_t *) FLASH_BUFFER_ADDRESS, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT16, ul_crc);
/* Test CRC with CASTAGNOLI polynomial */
puts("\n\r====Test CRC with CASTAGNOLI (0x1EDC6F41) ====\r");
/* Compute CRC in SRAM */
puts("Test CRC in SRAM buffer\r");
ul_crc = compute_crc(g_uc_data_buf, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CASTAGNOLI);
/* Compute CRC in Flash and compare it with the result in SRAM */
puts("Test CRC in Flash buffer\r");
compute_crc_and_compare((uint8_t *) FLASH_BUFFER_ADDRESS, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CASTAGNOLI, ul_crc);
/* Test CRC with CCITT 802.3 polynomial */
puts("\n\r====Test CRC with CCITT 802.3 (0x04C11DB7) ====\r");
/* Compute CRC in SRAM */
puts("Test CRC in SRAM buffer\r");
ul_crc = compute_crc(g_uc_data_buf, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT8023);
/* Compute CRC in Flash and compare it with the result in SRAM */
puts("Test CRC in Flash buffer\r");
compute_crc_and_compare((uint8_t *) FLASH_BUFFER_ADDRESS, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT8023, ul_crc);
while (1) {
}
}
/**
* \brief Application entry point for CRCCU example.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
uint32_t ul_counter;
uint32_t ul_crc;
/* Initialize the system */
sysclk_init();
board_init();
/* Configure the console uart */
configure_console();
/* Output example information */
puts(STRING_HEADER);
/* Enable CRCCU peripheral clock */
sysclk_enable_peripheral_clock(CRCCU);
/* Fill data buffer in SRAM (The data may be random data) */
for (ul_counter = 0; ul_counter < BUFFER_LENGTH; ul_counter++) {
g_uc_data_buf[ul_counter] = ul_counter;
}
/* Fill data buffer in Flash, the data is same as in SRAM */
flashcalw_memcpy((void *)FLASH_BUFFER_ADDRESS, g_uc_data_buf,
sizeof(g_uc_data_buf), true);
/* Test CRC with CCITT-16 polynomial */
puts("\n\r====Test CRC with CCITT 16 (0x1021) ====\r");
/* Compute CRC in SRAM */
puts("Test CRC in SRAM buffer\r");
ul_crc = compute_crc(g_uc_data_buf, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT16);
/* Compute CRC in Flash and compare it with the result in SRAM */
puts("Test CRC in Flash buffer\r");
compute_crc_and_compare((uint8_t *) FLASH_BUFFER_ADDRESS, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT16, ul_crc);
/* Test CRC with CASTAGNOLI polynomial */
puts("\n\r====Test CRC with CASTAGNOLI (0x1EDC6F41) ====\r");
/* Compute CRC in SRAM */
puts("Test CRC in SRAM buffer\r");
ul_crc = compute_crc(g_uc_data_buf, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CASTAGNOLI);
/* Compute CRC in Flash and compare it with the result in SRAM */
puts("Test CRC in Flash buffer\r");
compute_crc_and_compare((uint8_t *) FLASH_BUFFER_ADDRESS, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CASTAGNOLI, ul_crc);
/* Test CRC with CCITT 802.3 polynomial */
puts("\n\r====Test CRC with CCITT 802.3 (0x04C11DB7) ====\r");
/* Compute CRC in SRAM */
puts("Test CRC in SRAM buffer\r");
ul_crc = compute_crc(g_uc_data_buf, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT8023);
/* Compute CRC in Flash and compare it with the result in SRAM */
puts("Test CRC in Flash buffer\r");
compute_crc_and_compare((uint8_t *) FLASH_BUFFER_ADDRESS, BUFFER_LENGTH,
CRCCU_MR_PTYPE_CCITT8023, ul_crc);
while (1) {
}
}
