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sdk:scripts:serial-read [2015/05/05 15:04] |
sdk:scripts:serial-read [2015/05/05 15:04] (current) |
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| + | ====== SDK Script serial-read.are ====== | ||
| + | <code c serial-read.are> | ||
| + | /* DESC: This script can be used to read messages from the serial port. | ||
| + | * Copyright (C) 2012 NetModule AG, Switzerland | ||
| + | */ | ||
| + | |||
| + | DEV = "SERIAL1"; | ||
| + | READ_TIMEOUT = 5; /* seconds */ | ||
| + | |||
| + | void usage() | ||
| + | { | ||
| + | printf("usage: serial-read.are\n"); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | /* check serial port config */ | ||
| + | st = nb_config_get("serial.0.status"); | ||
| + | if (st != "2") { | ||
| + | nb_syslog("Serial port is not enabled for us"); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | |||
| + | /* set attributes */ | ||
| + | ret = nb_serial_setattr(DEV, 115200, 8, 1, 0, 0); | ||
| + | |||
| + | if (ret != 0) { | ||
| + | printf("Could not set serial attributes: %i \n",ret); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | |||
| + | /* open serial port */ | ||
| + | fd = nb_serial_open(DEV); | ||
| + | if (fd < 0) { | ||
| + | printf("Unable to open %s\n", DEV); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | while (1) { | ||
| + | rc = select(fd, READ_TIMEOUT); | ||
| + | if (rc == -1) { | ||
| + | printf("ERROR: select failed\n"); | ||
| + | close(fd); | ||
| + | exit(1); | ||
| + | } else if (rc == 0) { | ||
| + | /* nothing received */ | ||
| + | printf("timeout reached\n"); | ||
| + | } else { | ||
| + | /* received something */ | ||
| + | msg = read(fd, 1024); | ||
| + | if (msg) { | ||
| + | printf("read: %s\n", msg); | ||
| + | } | ||
| + | } | ||
| + | } | ||
| + | close(fd); | ||
| + | |||
| + | exit(0); | ||
| + | |||
| + | </code> | ||