eddy/stm32samples
1
0
Fork 0
mirror of https://github.com/eddyem/stm32samples.git synced 2026-02-28 11:54:30 +03:00
Code Issues Packages Projects Releases Wiki Activity

continue writing

Browse Source
This commit is contained in:
Edward Emelianov
2025-09-16 22:53:15 +03:00
parent ec8d56c4ae
commit 3e701f147f
25 changed files with 1345 additions and 982 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
F3:F303/I2C_scan/strfunc.c
View File

@@ -16,7 +16,7 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stm32f3.h>
#include "strfunc.h"
/**
* @brief hexdump - dump hex array by 16 bytes in string
@@ -32,7 +32,33 @@ void hexdump(int (*sendfun)(const char *s), uint8_t *arr, uint16_t len){
if(half < 10) *bptr++ = half + '0';
else *bptr++ = half - 10 + 'a';
}
if(l % 16 == 15){
if((l & 0xf) == 0xf){
*bptr++ = '\n';
*bptr = 0;
sendfun(buf);
bptr = buf;
}else *bptr++ = ' ';
}
if(bptr != buf){
*bptr++ = '\n';
*bptr = 0;
sendfun(buf);
}
}
// dump uint16_t by 8 values in string
void hexdump16(int (*sendfun)(const char *s), uint16_t *arr, uint16_t len){
char buf[52], *bptr = buf;
for(uint16_t l = 0; l < len; ++l, ++arr){
uint16_t val = *arr;
for(int16_t j = 3; j > -1; --j){
register uint8_t q = val & 0xf;
val >>= 4;
if(q < 10) bptr[j] = q + '0';
else bptr[j] = q - 10 + 'a';
}
bptr += 4;
if((l & 7) == 7){
*bptr++ = '\n';
*bptr = 0;
sendfun(buf);
@@ -52,7 +78,7 @@ void hexdump(int (*sendfun)(const char *s), uint8_t *arr, uint16_t len){
* @param minus - ==0 if value > 0
* @return buffer with number
*/
static char *_2str(uint32_t val, uint8_t minus){
static const char *_2str(uint32_t val, uint8_t minus){
static char strbuf[12];
char *bufptr = &strbuf[11];
*bufptr = 0;
@@ -72,10 +98,10 @@ static char *_2str(uint32_t val, uint8_t minus){
}
// return string with number `val`
char *u2str(uint32_t val){
const char *u2str(uint32_t val){
return _2str(val, 0);
}
char *i2str(int32_t i){
const char *i2str(int32_t i){
uint8_t minus = 0;
uint32_t val;
if(i < 0){
@@ -90,7 +116,7 @@ char *i2str(int32_t i){
* @param val - value
* @return string with number
*/
char *uhex2str(uint32_t val){
const char *uhex2str(uint32_t val){
static char buf[12] = "0x";
int npos = 2;
uint8_t *ptr = (uint8_t*)&val + 3;
@@ -265,10 +291,3 @@ const char *getint(const char *txt, int32_t *I){
*I = sign * (int32_t)U;
return nxt;
}
/*
void mymemcpy(char *dest, const char *src, int len){
if(len < 1) return;
while(len--) *dest++ = *src++;
}
*/