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refactor crc stuff

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This commit is contained in:
david
2009-06-24 14:22:26 +02:00
parent c24d6ceb81
commit 8b10ccc7de
3 changed files with 45 additions and 37 deletions
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35
avr/usbload/crc.c
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@@ -3,6 +3,8 @@
#include "crc.h"
#include "uart.h"
#include "config.h"
#include "sram.h"
extern FILE uart_stdout;
@@ -37,3 +39,36 @@ uint16_t do_crc_update(uint16_t crc, uint8_t * data, uint16_t size)
crc = crc_xmodem_update(crc, data[i]);
return crc;
}
void crc_check_memory(uint32_t top_addr,uint8_t *buffer)
{
uint16_t crc = 0;
uint32_t addr;
uint8_t req_bank = 0;
for (addr = 0x000000; addr < top_addr; addr += BUFFER_SIZE) {
sram_read_buffer(addr, buffer, BUFFER_SIZE);
crc = do_crc_update(crc, buffer, BUFFER_SIZE);
if (addr && addr % 32768 == 0) {
printf("crc_check_memory: req_bank: 0x%02x Addr: 0x%08lx CRC: 0x%04x\n",
req_bank, addr, crc);
req_bank++;
crc = 0;
}
}
}
uint16_t crc_check_memory_range(uint32_t start_addr, uint32_t size,uint8_t *buffer)
{
uint16_t crc = 0;
uint32_t addr;
uint8_t req_bank = 0;
for (addr = start_addr; addr < start_addr + size; addr += BUFFER_SIZE) {
sram_read_buffer(addr, buffer, BUFFER_SIZE);
crc = do_crc_update(crc, buffer, BUFFER_SIZE);
}
#if DEBUG_USB
printf("crc_check_memory_range: Addr: 0x%08lx CRC: 0x%04x\n", addr, crc);
#endif
return crc;
}