FreeCalypso > hg > fc-sim-tools
view serial/xmit.c @ 57:bccf028921bb
apdu-checksw command added to both fc-simtool and fc-uicc-tool
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Mon, 22 Mar 2021 23:58:11 +0000 |
parents | 5ee00413b8af |
children |
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/* * This module implements the function for sending byte strings * to the SIM and collecting the UART echo. */ #include <sys/types.h> #include <sys/time.h> #include <sys/errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> extern int target_fd; extern int inverse_coding; send_bytes_to_sim(data, nbytes) u_char *data; unsigned nbytes; { u_char buf1[255], buf2[255]; fd_set fds; struct timeval tv; unsigned rcvd; int cc; bcopy(data, buf1, nbytes); if (inverse_coding) invert_bytes(buf1, nbytes); write(target_fd, buf1, nbytes); for (rcvd = 0; rcvd < nbytes; ) { FD_ZERO(&fds); FD_SET(target_fd, &fds); tv.tv_sec = 1; tv.tv_usec = 0; cc = select(target_fd+1, &fds, NULL, NULL, &tv); if (cc < 0) { if (errno == EINTR) continue; perror("select"); return(-1); } if (cc < 1) { fprintf(stderr, "error: timeout waiting for echo of Tx bytes\n"); return(-1); } cc = read(target_fd, buf2 + rcvd, nbytes - rcvd); if (cc <= 0) { perror("read after successful select"); return(-1); } rcvd += cc; } if (bcmp(buf1, buf2, nbytes)) { fprintf(stderr, "error: UART echo mismatch\n"); return(-1); } else return(0); }