/**
* \brief 32-bit CRC of flash memory test
*
* This test does a 32-bit checksum on the flash memory and verifies the
* checksum against a pre-calculated 32-bit CRC checksum.
*
* \param test Current test case
*/
static void run_flash_test(const struct test_case *test)
{
uint32_t checksum;
checksum = crc_flash_checksum(CRC_FLASH_RANGE,
(flash_addr_t)data_8bit_flash, LENGTH(data_8bit_flash));
test_assert_true(test, checksum == CRC_CHECKSUM_32BIT,
"Checksum mismatch on flash range CRC-32 test");
}
/**
* \brief Example 2 main application routine
*/
int main(void)
{
uint8_t flashbuf[8];
uint32_t checksum1;
uint32_t checksum2;
board_init();
sysclk_init();
gfx_mono_init();
// Calculate checksum for an address range in flash.
checksum1 = crc_flash_checksum(CRC_FLASH_RANGE, FLASHADDR, 4);
// Read out the buffer from flash
nvm_flash_read_buffer(FLASHADDR, flashbuf, 4);
// Calculate checksum for the buffer from flash
checksum2 = crc_io_checksum(flashbuf, 4, CRC_32BIT);
// Make sure the calculated checksums are equal and write to screen
if (checksum1 == checksum2) {
gfx_mono_draw_string("Address range CRC OK",
0, 0, &sysfont);
}
// Append the flash checksum and recalculate
crc32_append_value(checksum1, flashbuf+4);
checksum1 = crc_io_checksum(flashbuf, 8, CRC_32BIT);
// Make sure the checksum is zero and write to screen
if (checksum1 == 0) {
gfx_mono_draw_string("IO CRC zero OK", 0,
SYSFONT_HEIGHT + 1, &sysfont);
}
// Calculate checksum for the boot section
checksum1 = crc_flash_checksum(CRC_BOOT, 0, 0);
// Recalculate checksum for the boot section using flash range CRC
checksum2 = crc_flash_checksum(CRC_FLASH_RANGE, BOOT_SECTION_START,
BOOT_SECTION_END-BOOT_SECTION_START+1);
// Make sure the checksums are equal and write to screen
if (checksum1 == checksum2) {
gfx_mono_draw_string("Boot section CRC OK",
0, (SYSFONT_HEIGHT + 1)*2, &sysfont);
}
// Calculate checksum for the application section
checksum1 = crc_flash_checksum(CRC_APP, 0, 0);
// Recalculate checksum for the application section using flash range CRC
checksum2 = crc_flash_checksum(CRC_FLASH_RANGE, APP_SECTION_START,
APP_SECTION_END-APP_SECTION_START+1);
// Make sure the checksums are equal and write to screen
if (checksum1 == checksum2) {
gfx_mono_draw_string("App section CRC OK",
0, (SYSFONT_HEIGHT + 1)*3, &sysfont);
}
// End of application, loop forever
while (true) {
// Intentionally left empty
}
}
