1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
#include <avr/io.h>
#include <stdio.h>
#include <string.h>
#include <util/delay.h>
#include "i2c.h"
#include "br24t_eeprom_driver.h"
#include "uart.h"
#include "pins.h"
#include "debug.h"
#define EEPROM_ADDR 0x57
#define EEPROM_PAGE_SIZE 64
//for burning eeprom
#define MAGIC_SYN 0xdeadbeef
#define MAGIC_ACK 0xf00dd00d
#define PAGE_WRITE_OK 0x00
#define PAGE_WRITE_CORRUPTED 0x01
#define PAGE_WRITE_UNKNOWN_ERROR 0xff
#ifdef FLASH_EEPROM
int main() {
LED_DEBUG_DDR |= _BV(LED_DEBUG); //TODO move to debug file or somethin
LED_DEBUG_PORT &= ~(_BV(LED_DEBUG));
i2c_init();
uart_debug_init();
FILE stdout_replacement = FDEV_SETUP_STREAM((void *)uart_debug_sendbyte, NULL, _FDEV_SETUP_WRITE);
FILE stdin_replacement = FDEV_SETUP_STREAM(NULL, (void *)uart_debug_recvbyte, _FDEV_SETUP_READ);
stdout = &stdout_replacement;
stdin = &stdin_replacement;
printf("booted\r\n");
flash_eeprom();
return 0;
}
void flash_eeprom() {
unsigned int page_len;
unsigned int on_byte;
uint8_t eeprom_buffer_out[EEPROM_PAGE_SIZE];
uint8_t eeprom_buffer_in[EEPROM_PAGE_SIZE];
/**
FILE master_in = FDEV_SETUP_STREAM((void *)uart_flash_sendbyte, NULL, _FDEV_SETUP_WRITE);
FILE master_out = FDEV_SETUP_STREAM(NULL, (void *)uart_flash_recvbyte, _FDEV_SETUP_READ);
**/
FILE master_f = FDEV_SETUP_STREAM((void *)uart_flash_sendbyte, NULL, _FDEV_SETUP_WRITE);
printf("waiting for master\r\n");
fread(&page_len, 1, 1, master_out);
printf("%i pages total\r\n", page_len);
for(int page = 0; page < page_len; page++) {
printf("writing page %i...\r\n", page);
fread(eeprom_buffer_out, EEPROM_PAGE_SIZE, 1, &master_in);
fputc(PAGE_WRITE_CORRUPTED, &master_out);
i2c_start(EEPROM_I2C_ADDR, I2C_READ);
i2c_send((uint8_t)(page * EEPROM_PAGE_SIZE) & 0xff);
i2c_send((uint8_t)(page * EEPROM_PAGE_SIZE) >> 8);
for(on_byte = 0; on_byte < EEPROM_PAGE_SIZE; on_byte++)
i2c_send(eeprom_buffer_out[on_byte]);
i2c_stop();
//verify
eeprom_buffer_in[0] = EEPROM_READBYTE(page * EEPROM_PAGE_SIZE);
//eeprom_buffer_in[0] = i2c_read_reg_addr16(EEPROM_I2C_ADDR, page * EEPROM_PAGE_SIZE);
i2c_start(EEPROM_I2C_ADDR, I2C_READ);
for(on_byte = 1; on_byte < EEPROM_PAGE_SIZE; on_byte++)
eeprom_buffer_in[on_byte] = i2c_recv();
i2c_stop();
if(memcmp(eeprom_buffer_in, eeprom_buffer_out, EEPROM_PAGE_SIZE)) {
fputc(PAGE_WRITE_CORRUPTED, &master_out);
printf("invalid checksum on page %i!", page);
}
fputc(PAGE_WRITE_OK, &master_out);
}
printf("If you ever read this, you should be happy\r\n");
}
#endif
|
