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/*
* Copyright (C) 2021 McMCC <mcmcc@mail.ru>
* i2c_eeprom.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "ch341a_spi.h"
#include "ch341a_i2c.h"
#include "timer.h"
extern unsigned int bsize;
struct EEPROM eeprom_info;
char eepromname[12];
int eepromsize = 0;
/*int i2c_eeprom_read(unsigned char *buf, unsigned long from, unsigned long len)
{
unsigned char *pbuf, ebuf[MAX_EEPROM_SIZE];
if (len == 0)
return -1;
timer_start();
memset(ebuf, 0, sizeof(ebuf));
pbuf = ebuf;
if (ch341readEEPROM(pbuf, eepromsize, &eeprom_info) < 0) {
printf("Couldnt read [%d] bytes from [%s] EEPROM address 0x%08lu\n", (int)len, eepromname, from);
return -1;
}
memcpy(buf, pbuf + from, len);
printf("Read [%d] bytes from [%s] EEPROM address 0x%08lu\n", (int)len, eepromname, from);
timer_end();
return (int)len;
}
*/
/*int i2c_eeprom_erase(unsigned long offs, unsigned long len)
{
unsigned char *pbuf, ebuf[MAX_EEPROM_SIZE];
if (len == 0)
return -1;
timer_start();
memset(ebuf, 0xff, sizeof(ebuf));
pbuf = ebuf;
if (offs || len < eepromsize) {
if (ch341readEEPROM(pbuf, eepromsize, &eeprom_info) < 0) {
printf("Couldnt read [%d] bytes from [%s] EEPROM\n", eepromsize, eepromname);
return -1;
}
memset(pbuf + offs, 0xff, len);
}
if(ch341writeEEPROM(pbuf, eepromsize, &eeprom_info) < 0) {
printf("Failed to erase [%d] bytes of [%s] EEPROM address 0x%08lu\n", (int)len, eepromname, offs);
return -1;
}
printf("Erased [%d] bytes of [%s] EEPROM address 0x%08lu\n", (int)len, eepromname, offs);
timer_end();
return 0;
}
*/
/*int i2c_eeprom_write(unsigned char *buf, unsigned long to, unsigned long len)
{
unsigned char *pbuf, ebuf[MAX_EEPROM_SIZE];
if (len == 0)
return -1;
timer_start();
memset(ebuf, 0xff, sizeof(ebuf));
pbuf = ebuf;
if (to || len < eepromsize) {
if (ch341readEEPROM(pbuf, eepromsize, &eeprom_info) < 0) {
printf("Couldnt read [%d] bytes from [%s] EEPROM\n", (int)len, eepromname);
return -1;
}
}
memcpy(pbuf + to, buf, len);
if(ch341writeEEPROM(pbuf, eepromsize, &eeprom_info) < 0) {
printf("Failed to write [%d] bytes of [%s] EEPROM address 0x%08lu\n", (int)len, eepromname, to);
return -1;
}
printf("Wrote [%d] bytes to [%s] EEPROM address 0x%08lu\n", (int)len, eepromname, to);
timer_end();
return (int)len;
}
long i2c_init(void)
{
if (config_stream(CH341_I2C_STANDARD_SPEED) < 0)
return -1;
if (eepromsize <= 0) {
printf("I2C EEPROM Not Detected!\n");
return -1;
}
bsize = 1;
printf("I2C EEPROM chip: %s, Size: %d bytes\n", eepromname, eepromsize);
return (long)eepromsize;
}
void support_i2c_eeprom_list(void)
{
int i;
printf("I2C EEPROM Support List:\n");
for ( i = 0; i < (sizeof(eepromlist)/sizeof(struct EEPROM)); i++)
{
if (!eepromlist[i].size)
break;
printf("%03d. %s\n", i + 1, eepromlist[i].name);
}
}
*/
/* End of [i2c_eeprom.c] package */
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