Fix many typos

Thanks to @peternewman

ISSUE_TEMPLATE.md

@@ -1,40 +1,40 @@
 Please read the following carefully before submitting this new issue.
 
- - Please ensure, that you are really reporting a bug. When in doubt,
-   post a message on https://groups.google.com/forum/#!forum/libmodbus
-   or send an email to libmodbus@googlegroups.com
+- Please ensure, that you are really reporting a bug. When in doubt, post a
+  message on <https://groups.google.com/forum/#!forum/libmodbus> or send an
+  email to libmodbus@googlegroups.com
 
- - Please do not open issues to ask questions about using libmodbus.
-   Use the mailing list for this as there are many more people reading
-   that list, who could help you.
+- Please do not open issues to ask questions about using libmodbus. Use the
+  mailing list for this as there are many more people reading that list, who
+  could help you.
 
- - When using libmodbus from a distribution (Debian, Fedora...), please
-   report the bug first in the bug tracker of the distribution. The
-   reason for doing so is that the package maintainer should have a chance
-   to look at the issue first as it might be a packaging error. If/when
-   the package maintainer comes to the conclusion that is really an upstream
-   bug, then he/she will usually report it here by himself/herself.
-   This is because he/she is interested in staying in the notification chain
-   to decide about a backport as soon as a bugfix is available.
-   Otherwise you (distribution user) will be asked to do so explicitely.
+- When using libmodbus from a distribution (Debian, Fedora...), please report
+  the bug first in the bug tracker of the distribution. The reason for doing so
+  is that the package maintainer should have a chance to look at the issue first
+  as it might be a packaging error. If/when the package maintainer comes to the
+  conclusion that is really an upstream bug, then he/she will usually report it
+  here by himself/herself. This is because he/she is interested in staying in
+  the notification chain to decide about a backport as soon as a bugfix is
+  available. Otherwise you (distribution user) will be asked to do so
+  explicitly.
 
-When you get here and you are still convinced that you want report a bug:
+When you get here and you are still convinced that you want to report a bug:
 
- - *Use a clear and decriptive title* for the issue to identify
+- *Use a clear and decriptive title* for the issue to identify
 
- - *Which version of libmodbus are you using?* you can obtain this information
+- *Which version of libmodbus are you using?* you can obtain this information
    from your package manager or by running `pkg-config --modversion libmodbus`.
    You can provide the sha1 of the commit if you have fetched the code with `git`.
 
- - *Which operating system are you using?*
+- *Which operating system are you using?*
 
- - *Describe the exact steps which reproduce the problem* in as many details as
+- *Describe the exact steps which reproduce the problem* in as many details as
    possible. For example, the software/equipement which runs the Modbus server, how
    the clients are connected (TCP, RTU, ASCII) and the source code you are using.
 
- - *Enable the debug mode*, libmodbus provides a function to display the content
+- *Enable the debug mode*, libmodbus provides a function to display the content
    of the Modbus messages and it's very convenient to analyze issues
-   (http://libmodbus.org/docs/latest/modbus_set_debug.html).
+   (<http://libmodbus.org/docs/latest/modbus_set_debug.html>).
 
 Good bug reports provide right and quick fixes!
 

MIGRATION

@@ -16,7 +16,7 @@ dynamically allocated structure modbus_t.
 
 - all function and constants are respectively prefixed by modbus_ or MODBUS_.
 
-- the POSIX error conventions are used (if an error occured, -1 or NULL is
+- the POSIX error conventions are used (if an error occurred, -1 or NULL is
   returned and errno is set accordingly).
 
 - coil status and discretes inputs are just bits and force/preset actions have

NEWS

@@ -423,7 +423,7 @@ libmodbus 2.1.0 (2010-03-24)
 - Fix report slave ID request
   Patch (bzr) provided by Paul Fertser.
 - Fix #425604 - Conditional jump or move depends on uninitialised value(s)
-  Occurs on first occurence of slave timeout.
+  Occurs on first occurrence of slave timeout.
   Reported by Henrik Munktell.
 - Fix #457200 - FreeBSD support
   Patch provided by Norbert Koch.

doc/modbus_mapping_new_start_address.txt

@@ -21,9 +21,9 @@ The _modbus_mapping_new_start_address()_ function shall allocate four arrays to
 store bits, input bits, registers and inputs registers. The pointers are stored
 in modbus_mapping_t structure. All values of the arrays are initialized to zero.
 
-The different starting adresses make it possible to place the mapping at any
+The different starting addresses make it possible to place the mapping at any
 address in each address space. This way, you can give access to values stored
-at high adresses without allocating memory from the address zero, for eg. to
+at high addresses without allocating memory from the address zero, for eg. to
 make available registers from 10000 to 10009, you can use:
 
 [source,c]

doc/modbus_receive_confirmation.txt

@@ -30,7 +30,7 @@ avoid crashes of your server.
 RETURN VALUE
 ------------
 The function shall store the confirmation request in _rsp_ and return the
-response length if sucessful. The returned request length can be zero if the
+response length if successful. The returned request length can be zero if the
 indication request is ignored (eg. a query for another slave in RTU
 mode). Otherwise it shall return -1 and set errno.
 

doc/modbus_reply.txt

@@ -3,7 +3,7 @@ modbus_reply(3)
 
 NAME
 ----
-modbus_reply - send a reponse to the received request
+modbus_reply - send a response to the received request
 
 
 SYNOPSIS

doc/modbus_reply_exception.txt

@@ -3,7 +3,7 @@ modbus_reply_exception(3)
 
 NAME
 ----
-modbus_reply_exception - send an exception reponse
+modbus_reply_exception - send an exception response
 
 
 SYNOPSIS

doc/modbus_set_float_badc.txt

@@ -15,7 +15,7 @@ SYNOPSIS
 DESCRIPTION
 -----------
 The *modbus_set_float_badc()* function shall set a float to 4 bytes in swapped
-bytes Modbus format (BADC insted of ABCD). The _dest_ array must be pointer on
+bytes Modbus format (BADC instead of ABCD). The _dest_ array must be pointer on
 two 16 bits values to be able to store the full result of the conversion.
 
 

src/modbus-rtu.c

@@ -842,7 +842,7 @@ static int _modbus_rtu_connect(modbus_t *ctx)
        ONCLR ant others needs OPOST to be enabled
     */
 
-    /* Raw ouput */
+    /* Raw output */
     tios.c_oflag &=~ OPOST;
 
     /* C_CC         Control characters

src/modbus-tcp-private.h

@@ -14,7 +14,7 @@
 #define _MODBUS_TCP_CHECKSUM_LENGTH    0
 
 /* In both structures, the transaction ID must be placed on first position
-   to have a quick access not dependant of the TCP backend */
+   to have a quick access not dependent of the TCP backend */
 typedef struct _modbus_tcp {
     /* Extract from MODBUS Messaging on TCP/IP Implementation Guide V1.0b
        (page 23/46):

src/modbus-tcp.c

@@ -154,7 +154,7 @@ static int _modbus_tcp_prepare_response_tid(const uint8_t *req, int *req_length)
 
 static int _modbus_tcp_send_msg_pre(uint8_t *req, int req_length)
 {
-    /* Substract the header length to the message length */
+    /* Subtract the header length to the message length */
     int mbap_length = req_length - 6;
 
     req[4] = mbap_length >> 8;
@@ -905,7 +905,7 @@ modbus_t* modbus_new_tcp_pi(const char *node, const char *service)
         dest_size = sizeof(char) * _MODBUS_TCP_PI_SERVICE_LENGTH;
         ret_size = strlcpy(ctx_tcp_pi->service, service, dest_size);
     } else {
-        /* Empty service is not allowed, error catched below. */
+        /* Empty service is not allowed, error caught below. */
         ret_size = 0;
     }
 

src/modbus.c

@@ -1406,7 +1406,7 @@ int modbus_mask_write_register(modbus_t *ctx, int addr, uint16_t and_mask, uint1
     int rc;
     int req_length;
     /* The request length can not exceed _MIN_REQ_LENGTH - 2 and 4 bytes to
-     * store the masks. The ugly substraction is there to remove the 'nb' value
+     * store the masks. The ugly subtraction is there to remove the 'nb' value
      * (2 bytes) which is not used. */
     uint8_t req[_MIN_REQ_LENGTH + 2];
 

tests/README.md

@@ -21,7 +21,7 @@ programs are essential to test the Modbus protocol implementation and libmodbus
 behavior.
 
 - `bandwidth-server-one`, `bandwidth-server-many-up` and `bandwidth-client`
- return very useful information about the performance of transfert rate between
+ return very useful information about the performance of transfer rate between
  the server and the client. `bandwidth-server-one` can only handles one
  connection at once with a client whereas `bandwidth-server-many-up` opens a
  connection for each new clients (with a limit).

tests/bandwidth-client.c

@@ -59,7 +59,7 @@ int main(int argc, char *argv[])
             use_backend = RTU;
             n_loop = 100;
         } else {
-            printf("Usage:\n  %s [tcp|rtu] - Modbus client to measure data bandwith\n\n", argv[0]);
+            printf("Usage:\n  %s [tcp|rtu] - Modbus client to measure data bandwidth\n\n", argv[0]);
             exit(1);
         }
     } else {
@@ -104,7 +104,7 @@ int main(int argc, char *argv[])
     elapsed = end - start;
 
     rate = (n_loop * nb_points) * G_MSEC_PER_SEC / (end - start);
-    printf("Transfert rate in points/seconds:\n");
+    printf("Transfer rate in points/seconds:\n");
     printf("* %d points/s\n", rate);
     printf("\n");
 
@@ -141,7 +141,7 @@ int main(int argc, char *argv[])
     elapsed = end - start;
 
     rate = (n_loop * nb_points) * G_MSEC_PER_SEC / (end - start);
-    printf("Transfert rate in points/seconds:\n");
+    printf("Transfer rate in points/seconds:\n");
     printf("* %d registers/s\n", rate);
     printf("\n");
 
@@ -180,7 +180,7 @@ int main(int argc, char *argv[])
     elapsed = end - start;
 
     rate = (n_loop * nb_points) * G_MSEC_PER_SEC / (end - start);
-    printf("Transfert rate in points/seconds:\n");
+    printf("Transfer rate in points/seconds:\n");
     printf("* %d registers/s\n", rate);
     printf("\n");
 

tests/bandwidth-server-one.c

@@ -38,7 +38,7 @@ int main(int argc, char *argv[])
         } else if (strcmp(argv[1], "rtu") == 0) {
             use_backend = RTU;
         } else {
-            printf("Usage:\n  %s [tcp|rtu] - Modbus client to measure data bandwith\n\n", argv[0]);
+            printf("Usage:\n  %s [tcp|rtu] - Modbus client to measure data bandwidth\n\n", argv[0]);
             exit(1);
         }
     } else {

tests/unit-test-client.c

@@ -533,7 +533,7 @@ int main(int argc, char *argv[])
     rc = modbus_report_slave_id(ctx, NB_REPORT_SLAVE_ID, tab_rp_bits);
     ASSERT_TRUE(rc == NB_REPORT_SLAVE_ID, "");
 
-    /* Slave ID is an arbitraty number for libmodbus */
+    /* Slave ID is an arbitrary number for libmodbus */
     ASSERT_TRUE(rc > 0, "");
 
     /* Run status indicator is ON */
@@ -622,7 +622,7 @@ int main(int argc, char *argv[])
         printf("1/2 Too small byte timeout (3ms < 5ms): ");
         ASSERT_TRUE(rc == -1 && errno == ETIMEDOUT, "");
 
-        /* Wait remaing bytes before flushing */
+        /* Wait remaining bytes before flushing */
         usleep(11 * 5000);
         modbus_flush(ctx);