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/*
* (C) Copyright 2014,2016 Leo C. <erbl259-lmu@yahoo.de>
*
* SPDX-License-Identifier: GPL-2.0
*/
#include "debug.h"
#include "common.h"
#include <stdlib.h> /* __malloc_margin */
#include <string.h>
#include <ctype.h>
#include <avr/eeprom.h>
#include "command.h"
#include "cli_readline.h"
#include "eval_arg.h"
#include "print-utils.h"
/*
* Debugging
*/
#ifdef DEBUG
#if 0
void dump_heap(void)
{
extern unsigned int __brkval;
dump_ram(__malloc_heap_start,
__brkval - (unsigned int) __malloc_heap_start,
"=== Heap:");
}
#endif
/*
* Memory Display
* md addr {len}
*/
command_ret_t do_dump_mem(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int (*readwhat)(uint8_t *buf, uint32_t addr, uint8_t count);
(void) cmdtp; (void) flag;
if (argc < 2)
return CMD_RET_USAGE;
uint32_t addr;
uint32_t length = 128;
switch (argv[0][3]) {
case 'r':
readwhat = ram_read_buf;
break;
case 'e':
readwhat = eeprom_read_buf;
break;
case 'f':
readwhat = flash_read_buf;
break;
default:
return CMD_RET_USAGE;
}
/* Address is specified since argc > 1 */
addr = eval_arg(argv[1], NULL);
/* If another parameter, it is the length to display. */
if (argc > 2)
length = (uint16_t) eval_arg(argv[2], NULL);
/* Print the lines. */
dump_mem(addr, addr, length, readwhat, NULL);
return CMD_RET_SUCCESS;
}
command_ret_t do_eep_cp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
uint16_t src, dest, count;
int_fast8_t step;
(void) cmdtp;
(void) flag;
if (argc != 4)
return CMD_RET_USAGE;
src = (size_t) eval_arg(argv[1], NULL);
dest = (size_t) eval_arg(argv[2], NULL);
count = (size_t) eval_arg(argv[3], NULL);
if (src > E2END) {
debug("src > EEPROM size: 0x%04x\n", src);
return CMD_RET_FAILURE;
}
if (dest > E2END) {
debug("dest > EEPROM size: 0x%04x\n", dest);
return CMD_RET_FAILURE;
}
if (count > E2END+1) {
debug("count > EEPROM size: 0x%04x\n", count);
return CMD_RET_FAILURE;
}
if (count == 0) {
debug("Zero length?\n");
return CMD_RET_FAILURE;
}
if (dest > src) {
src += count - 1;
dest += count - 1;
step = -1;
} else
step = 1;
while (count-- > 0) {
uint8_t data;
data = eeprom_read_byte((uint8_t *) src);
eeprom_write_byte((uint8_t *) dest, data);
src += step;
dest += step;
}
return CMD_RET_SUCCESS;
}
/* Modify memory.
*
* Syntax:
* !mm {addr}
* !nm {addr}
*/
static uint8_t *mm_last_addr;
static command_ret_t
mod_mem_avr(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const argv[])
{
uint8_t *addr;
uint8_t data;
int nbytes;
(void) cmdtp;
if (argc != 2)
return CMD_RET_USAGE;
/* We use the last specified parameters, unless new ones are
* entered.
*/
addr = mm_last_addr;
if ((flag & CMD_FLAG_REPEAT) == 0) {
/* New command specified.
*/
/* Address is specified since argc > 1
*/
addr = (uint8_t *) (size_t) eval_arg(argv[1], NULL);
}
/* Print the address, followed by value. Then accept input for
* the next value. A non-converted value exits.
*/
do {
data = *addr;
printf_P(PSTR("%04x: %02x"), addr, data);
nbytes = cli_readline(PSTR(" ? "), 0);
if (nbytes == 0 || (nbytes == 1 && console_buffer[0] == '-')) {
/* <CR> pressed as only input, don't modify current
* location and move to next. "-" pressed will go back.
*/
if (incrflag)
addr += nbytes ? -1 : 1;
nbytes = 1;
} else {
char *endp;
data = eval_arg(console_buffer, &endp);
nbytes = endp - console_buffer;
if (nbytes) {
*addr = data;
if (incrflag)
addr++;
}
}
} while (nbytes > 0);
mm_last_addr = addr;
return CMD_RET_SUCCESS;
}
command_ret_t do_mem_mm_avr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return mod_mem_avr (cmdtp, 1, flag, argc, argv);
}
command_ret_t do_mem_nm_avr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
return mod_mem_avr (cmdtp, 0, flag, argc, argv);
}
/*------------------------------------------------------------------------------*/
#if 1
struct __freelist {
size_t sz;
struct __freelist *nx;
};
extern char *__brkval; /* first location not yet allocated */
extern struct __freelist *__flp; /* freelist pointer (head of freelist) */
#define STACK_POINTER() ((char *)AVR_STACK_POINTER_REG)
void
printfreelist(const char * title)
{
struct __freelist *fp1;
int i;
unsigned int freesum = 0;
/* TODO: printf_P */
if (!__flp) {
printf("%s no free list\n", title ? title : "");
} else {
printf("Free list: %s\n", title ? title : "");
for (i = 0, fp1 = __flp; fp1; i++, fp1 = fp1->nx) {
printf(" entry %d @ %04x: size %4u, next ",
i, (size_t)fp1, fp1->sz);
if (fp1->nx)
printf("%04x\n", (size_t)fp1->nx);
else
printf("NULL\n");
freesum += fp1->sz;
}
}
freesum += (size_t) STACK_POINTER() - __malloc_margin - (size_t) __brkval;
printf("SP: %04x, __brkval: %04x, Total free: %04u\n",
(size_t) STACK_POINTER(), (size_t) __brkval, freesum);
}
#endif
#endif /* DEBUG */
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