mirror of https://github.com/Desuuuu/klipper.git
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
// Helper functions for C / Python interface
|
|
//
|
|
// Copyright (C) 2016-2018 Kevin O'Connor <kevin@koconnor.net>
|
|
//
|
|
// This file may be distributed under the terms of the GNU GPLv3 license.
|
|
|
|
#include <errno.h> // errno
|
|
#include <stdarg.h> // va_start
|
|
#include <stdint.h> // uint8_t
|
|
#include <stdio.h> // fprintf
|
|
#include <string.h> // strerror
|
|
#include <time.h> // struct timespec
|
|
#include "compiler.h" // __visible
|
|
#include "pyhelper.h" // get_monotonic
|
|
|
|
// Return the monotonic system time as a double
|
|
double __visible
|
|
get_monotonic(void)
|
|
{
|
|
struct timespec ts;
|
|
int ret = clock_gettime(CLOCK_MONOTONIC_RAW, &ts);
|
|
if (ret) {
|
|
report_errno("clock_gettime", ret);
|
|
return 0.;
|
|
}
|
|
return (double)ts.tv_sec + (double)ts.tv_nsec * .000000001;
|
|
}
|
|
|
|
// Fill a 'struct timespec' with a system time stored in a double
|
|
struct timespec
|
|
fill_time(double time)
|
|
{
|
|
time_t t = time;
|
|
return (struct timespec) {t, (time - t)*1000000000. };
|
|
}
|
|
|
|
static void
|
|
default_logger(const char *msg)
|
|
{
|
|
fprintf(stderr, "%s\n", msg);
|
|
}
|
|
|
|
static void (*python_logging_callback)(const char *msg) = default_logger;
|
|
|
|
void __visible
|
|
set_python_logging_callback(void (*func)(const char *))
|
|
{
|
|
python_logging_callback = func;
|
|
}
|
|
|
|
// Log an error message
|
|
void
|
|
errorf(const char *fmt, ...)
|
|
{
|
|
char buf[512];
|
|
va_list args;
|
|
va_start(args, fmt);
|
|
vsnprintf(buf, sizeof(buf), fmt, args);
|
|
va_end(args);
|
|
buf[sizeof(buf)-1] = '\0';
|
|
python_logging_callback(buf);
|
|
}
|
|
|
|
// Report 'errno' in a message written to stderr
|
|
void
|
|
report_errno(char *where, int rc)
|
|
{
|
|
int e = errno;
|
|
errorf("Got error %d in %s: (%d)%s", rc, where, e, strerror(e));
|
|
}
|
|
|
|
// Return a hex character for a given number
|
|
#define GETHEX(x) ((x) < 10 ? '0' + (x) : 'a' + (x) - 10)
|
|
|
|
// Translate a binary string into an ASCII string with escape sequences
|
|
char *
|
|
dump_string(char *outbuf, int outbuf_size, char *inbuf, int inbuf_size)
|
|
{
|
|
char *outend = &outbuf[outbuf_size-5], *o = outbuf;
|
|
uint8_t *inend = (void*)&inbuf[inbuf_size], *p = (void*)inbuf;
|
|
while (p < inend && o < outend) {
|
|
uint8_t c = *p++;
|
|
if (c > 31 && c < 127 && c != '\\') {
|
|
*o++ = c;
|
|
continue;
|
|
}
|
|
*o++ = '\\';
|
|
*o++ = 'x';
|
|
*o++ = GETHEX(c >> 4);
|
|
*o++ = GETHEX(c & 0x0f);
|
|
}
|
|
*o = '\0';
|
|
return outbuf;
|
|
}
|