diff options
Diffstat (limited to 'serial.c')
-rw-r--r-- | serial.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -335,7 +335,7 @@ int serialport_shutdown(void *data) return 0; } -int serialport_write(unsigned char *buf, unsigned int writecnt) +int serialport_write(const unsigned char *buf, unsigned int writecnt) { #ifdef _WIN32 DWORD tmp = 0; @@ -470,7 +470,7 @@ int serialport_read_nonblock(unsigned char *c, unsigned int readcnt, unsigned in /* Tries up to timeout ms to write writecnt characters from the array starting at buf. Returns * 0 on success, positive values on temporary errors (e.g. timeouts) and negative ones on permanent errors. * If really_wrote is not NULL, this function sets its contents to the number of bytes written successfully. */ -int serialport_write_nonblock(unsigned char *buf, unsigned int writecnt, unsigned int timeout, unsigned int *really_wrote) +int serialport_write_nonblock(const unsigned char *buf, unsigned int writecnt, unsigned int timeout, unsigned int *really_wrote) { int ret = 1; /* disable blocked i/o and declare platform-specific variables */ |