From a0a94c3336574482d16fa910e94d7f07bba60123 Mon Sep 17 00:00:00 2001
From: Harsh Sharma <harsh.sharma@multitech.com>
Date: Thu, 2 Jan 2020 13:57:50 -0600
Subject: Added spidev to the commandline options for the util_spi_stress

---
 util_spi_stress/src/util_spi_stress.c | 37 ++++++++++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 5 deletions(-)

diff --git a/util_spi_stress/src/util_spi_stress.c b/util_spi_stress/src/util_spi_stress.c
index 6cc5f04..c33f18f 100644
--- a/util_spi_stress/src/util_spi_stress.c
+++ b/util_spi_stress/src/util_spi_stress.c
@@ -31,6 +31,7 @@ Maintainer: Sylvain Miermont
 #include <signal.h>     /* sigaction */
 #include <unistd.h>     /* getopt access */
 #include <stdlib.h>     /* rand */
+#include <getopt.h>     /* getopt_long */
 
 #include "loragw_reg.h"
 
@@ -77,8 +78,9 @@ static void sig_handler(int sigio) {
 /* describe command line options */
 void usage(void) {
     MSG( "Available options:\n");
-    MSG( " -h print this help\n");
-    MSG( " -t <int> specify which test you want to run (1-4)\n");
+    MSG( " -h               Print this help\n");
+    MSG( " -t      <uint>   Specify which test you want to run (1-4)\n");
+    MSG( " --path  <string> Path of SPIDEV e.g. /dev/spidev0.0\n");
 }
 
 /* -------------------------------------------------------------------------- */
@@ -105,8 +107,15 @@ int main(int argc, char **argv)
     uint8_t test_buff[BUFF_SIZE];
     uint8_t read_buff[BUFF_SIZE];
 
+    int option_index = 0;
+    static struct option long_options[] = {
+        {"path", 1, 0, 0},
+        {0, 0, 0, 0}
+    };
+    char arg_s[64];
+
     /* parse command line options */
-    while ((i = getopt (argc, argv, "ht:")) != -1) {
+    while ((i = getopt_long (argc, argv, "ht:", long_options, &option_index)) != -1) {
         switch (i) {
             case 'h':
                 usage();
@@ -123,6 +132,24 @@ int main(int argc, char **argv)
                 }
                 break;
 
+            case 0:
+                if (strcmp(long_options[option_index].name,"path") == 0) {
+                    i = sscanf(optarg, "%s", arg_s);
+                    if ((i != 1) || (strncmp(arg_s, "/dev/", 5 ) != 0)) {
+                        printf("ERROR: argument parsing of --path argument. Use -h to print help\n");
+                        return EXIT_FAILURE;
+                    }
+                    else {
+                        lgw_spi_set_path(arg_s);
+                    }
+                }
+                else {
+                    MSG("ERROR: argument parsing use -h option for help\n");
+                    usage();
+                    return EXIT_FAILURE;
+                }
+                break;
+
             default:
                 MSG("ERROR: argument parsing use -h option for help\n");
                 usage();
@@ -142,7 +169,7 @@ int main(int argc, char **argv)
     /* start SPI link */
     i = lgw_connect(false, DEFAULT_TX_NOTCH_FREQ);
     if (i != LGW_REG_SUCCESS) {
-        MSG("ERROR: lgw_connect() did not return SUCCESS");
+        MSG("ERROR: Unable to connect to the concentrator\n");
         return EXIT_FAILURE;
     }
 
@@ -160,7 +187,7 @@ int main(int argc, char **argv)
                 }
             }
             if (error) {
-                printf("error during the %ith iteration: write 0x%02X, read 0x%02X\n", i+1, test_value, read_value);
+                printf("Error during the %ith iteration: write 0x%02X, read 0x%02X\n", i+1, test_value, read_value);
                 printf("Repeat read of target register:");
                 for (i=0; i<READS_WHEN_ERROR; ++i) {
                     lgw_reg_r(LGW_IMPLICIT_PAYLOAD_LENGHT, &read_value);
-- 
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