static const char *test_virtchar1_internal(const char *path) { TPRINTF("Opening `%s'...\n", path); int fd = open(path, O_RDONLY); if (fd < 0) { TPRINTF(" ...error: %s\n", str_error(fd)); if (fd == ENOENT) { TPRINTF(" (error was ENOENT: " \ "have you compiled test drivers?)\n"); } return "Failed opening devman driver device for reading"; } TPRINTF(" ...file handle %d\n", fd); TPRINTF(" Asking for session...\n"); async_sess_t *sess = fd_session(EXCHANGE_SERIALIZE, fd); if (!sess) { close(fd); TPRINTF(" ...error: %s\n", str_error(errno)); return "Failed to get session to device"; } TPRINTF(" ...session is %p\n", sess); TPRINTF(" Will try to read...\n"); size_t i; char buffer[BUFFER_SIZE]; char_dev_read(sess, buffer, BUFFER_SIZE); TPRINTF(" ...verifying that we read zeroes only...\n"); for (i = 0; i < BUFFER_SIZE; i++) { if (buffer[i] != 0) { return "Not all bytes are zeroes"; } } TPRINTF(" ...data read okay\n"); /* Clean-up. */ TPRINTF(" Closing session and file descriptor\n"); async_hangup(sess); close(fd); return NULL; }
int main(int argc, char **argv) { sysarg_t baud = 9600; service_id_t svc_id; int arg = 1; int rc; if (argc > arg && str_test_prefix(argv[arg], "--baud=")) { size_t arg_offset = str_lsize(argv[arg], 7); char* arg_str = argv[arg] + arg_offset; if (str_length(arg_str) == 0) { fprintf(stderr, "--baud requires an argument\n"); syntax_print(); return 1; } char *endptr; baud = strtol(arg_str, &endptr, 10); if (*endptr != '\0') { fprintf(stderr, "Invalid value for baud\n"); syntax_print(); return 1; } arg++; } if (argc > arg) { rc = loc_service_get_id(argv[arg], &svc_id, 0); if (rc != EOK) { fprintf(stderr, "Cannot find device service %s\n", argv[arg]); return 1; } arg++; } else { category_id_t serial_cat_id; rc = loc_category_get_id("serial", &serial_cat_id, 0); if (rc != EOK) { fprintf(stderr, "Failed getting id of category " "'serial'\n"); return 1; } service_id_t *svc_ids; size_t svc_count; rc = loc_category_get_svcs(serial_cat_id, &svc_ids, &svc_count); if (rc != EOK) { fprintf(stderr, "Failed getting list of services\n"); return 1; } if (svc_count == 0) { fprintf(stderr, "No service in category 'serial'\n"); free(svc_ids); return 1; } svc_id = svc_ids[0]; free(svc_ids); } if (argc > arg) { fprintf(stderr, "Too many arguments\n"); syntax_print(); return 1; } async_sess_t *sess = loc_service_connect(svc_id, INTERFACE_DDF, IPC_FLAG_BLOCKING); if (!sess) { fprintf(stderr, "Failed connecting to service\n"); } async_exch_t *exch = async_exchange_begin(sess); rc = async_req_4_0(exch, SERIAL_SET_COM_PROPS, baud, SERIAL_NO_PARITY, 8, 1); async_exchange_end(exch); if (rc != EOK) { fprintf(stderr, "Failed setting serial properties\n"); return 2; } uint8_t *buf = (uint8_t *) malloc(BUF_SIZE); if (buf == NULL) { fprintf(stderr, "Failed allocating buffer\n"); return 3; } while (true) { ssize_t read = char_dev_read(sess, buf, BUF_SIZE); if (read < 0) { fprintf(stderr, "Failed reading from serial device\n"); break; } ssize_t i; for (i = 0; i < read; i++) { printf("%02hhx ", buf[i]); } fflush(stdout); } free(buf); return 0; }