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/*
* Copyright (C) 2021 McMCC <mcmcc@mail.ru>
* mw_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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include "bitbang_microwire.h"
#include "ch341a_gpio.h"
#include "timer.h"
extern struct gpio_cmd bb_func;
extern char eepromname[12];
extern unsigned int bsize;
/*int mw_eeprom_read(unsigned char *buf, unsigned long from, unsigned long len)
{
unsigned char *pbuf, ebuf[MAX_MW_EEPROM_SIZE];
if (len == 0)
return -1;
timer_start();
memset(ebuf, 0, sizeof(ebuf));
pbuf = ebuf;
Read_EEPROM_3wire(pbuf, mw_eepromsize);
memcpy(buf, pbuf + from, len);
printf("Read [%lu] bytes from [%s] EEPROM address 0x%08lu\n", len, eepromname, from);
timer_end();
return (int)len;
}
*/
/*int mw_eeprom_erase(unsigned long offs, unsigned long len)
{
unsigned char *pbuf, ebuf[MAX_MW_EEPROM_SIZE];
if (len == 0)
return -1;
timer_start();
memset(ebuf, 0xff, sizeof(ebuf));
pbuf = ebuf;
if (offs || len < mw_eepromsize) {
Read_EEPROM_3wire(pbuf, mw_eepromsize);
memset(pbuf + offs, 0xff, len);
}
Erase_EEPROM_3wire(mw_eepromsize);
if (offs || len < mw_eepromsize) {
if (Write_EEPROM_3wire(pbuf, mw_eepromsize) < 0) {
printf("Failed to erase [%lu] bytes of [%s] EEPROM address 0x%08lu\n", len, eepromname, offs);
return -1;
}
}
printf("Erased [%lu] bytes of [%s] EEPROM address 0x%08lu\n", len, eepromname, offs);
timer_end();
return 0;
}
int mw_eeprom_write(unsigned char *buf, unsigned long to, unsigned long len)
{
unsigned char *pbuf, ebuf[MAX_MW_EEPROM_SIZE];
if (len == 0)
return -1;
timer_start();
memset(ebuf, 0xff, sizeof(ebuf));
pbuf = ebuf;
if (to || len < mw_eepromsize) {
Read_EEPROM_3wire(pbuf, mw_eepromsize);
}
memcpy(pbuf + to, buf, len);
Erase_EEPROM_3wire(mw_eepromsize);
if (Write_EEPROM_3wire(pbuf, mw_eepromsize) < 0) {
printf("Failed to write [%lu] bytes of [%s] EEPROM address 0x%08lu\n", len, eepromname, to);
return -1;
}
printf("Wrote [%lu] bytes to [%s] EEPROM address 0x%08lu\n", len, eepromname, to);
timer_end();
return (int)len;
}
*/
/*
25xx 93xx
PIN 22 - D7 - MISO DO
PIN 21 - D6 -
PIN 20 - D5 - MOSI DI
PIN 19 - D4 -
PIN 18 - D3 - CLK CLK
PIN 17 - D2 -
PIN 16 - D1 -
PIN 15 - D0 - CS CS
*/
int mw_gpio_init(void)
{
int ret = 0;
CLK = 1 << 3;
DO = 1 << 7;
DI = 1 << 5;
CSEL = 1 << 0;
bb_func.gpio_setdir = ch341a_gpio_setdir;
bb_func.gpio_setbits = ch341a_gpio_setbits;
bb_func.gpio_getbits = ch341a_gpio_getbits;
if(bb_func.gpio_setdir)
ret = bb_func.gpio_setdir();
else
return -1;
if(ret < 0)
return -1;
return 0;
}
/*static char *__itoa(int a)
{
char *p, tmp[32];
p = tmp;
snprintf(p, sizeof(tmp), "%d", a);
return p;
}
*/
/*long mw_init(void)
{
if (mw_eepromsize <= 0) {
printf("Microwire EEPROM Not Detected!\n");
return -1;
}
if (mw_gpio_init() < 0)
return -1;
bsize = 1;
printf("Microwire EEPROM chip: %s, Size: %d bytes, Org: %d bits, fix addr len: %s\n", eepromname, mw_eepromsize / (org ? 2 : 1),
org ? 16 : 8, fix_addr_len ? __itoa(fix_addr_len) : "Auto");
return (long)mw_eepromsize;
}
*/
/*void support_mw_eeprom_list(void)
{
int i;
printf("Microwire EEPROM Support List:\n");
for ( i = 0; i < (sizeof(mw_eepromlist)/sizeof(struct MW_EEPROM)); i++)
{
if (!mw_eepromlist[i].size)
break;
printf("%03d. %s\n", i + 1, mw_eepromlist[i].name);
}
}
*/
/* End of [mw_eeprom.c] package */
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