From b17c8afdf20c7c01c483ccd455a7b744d18a3d7c Mon Sep 17 00:00:00 2001
From: erikkaashoek <erik@kaashoek.com>
Date: Tue, 16 Jun 2020 14:26:40 +0200
Subject: [PATCH] Updated scan command

---
 main.c | 29 +++++++++++++++++++++++++----
 1 file changed, 25 insertions(+), 4 deletions(-)

diff --git a/main.c b/main.c
index a58f256..ddbd41c 100644
--- a/main.c
+++ b/main.c
@@ -964,7 +964,7 @@ bool sweep(bool break_on_operation)
 VNA_SHELL_FUNCTION(cmd_scan)
 {
   uint32_t start, stop;
-  int16_t points = sweep_points;
+  uint32_t points = sweep_points;
   int i;
   if (argc < 2 || argc > 4) {
     shell_printf("usage: scan {start(Hz)} {stop(Hz)} [points] [outmask]\r\n");
@@ -979,10 +979,31 @@ VNA_SHELL_FUNCTION(cmd_scan)
   }
   if (argc >= 3) {
     points = my_atoi(argv[2]);
-    if (points <= 0 || points > POINTS_COUNT) {
-      shell_printf("sweep points exceeds range "define_to_STR(POINTS_COUNT)"\r\n");
-      return;
+ //   if (points <= 0 || points > POINTS_COUNT) {
+ //     shell_printf("sweep points exceeds range "define_to_STR(POINTS_COUNT)"\r\n");
+ //     return;
+ //   }
+  }
+
+  if (argc==4 && my_atoui(argv[3]) == 16) {
+    int old_step = setting.frequency_step;
+    float f_step = (stop-start)/ points;
+    setting.frequency_step = (int32_t)f_step;
+    streamPut(shell_stream, '{');
+    dirty = true;
+    for (int i = 0; i<points; i++) {
+      if (operation_requested)
+        break;
+      float val = perform(false, i, start +(int32_t)(f_step * i), false);
+      streamPut(shell_stream, 'x');
+      int v = val*2 + 256;
+      streamPut(shell_stream, (uint8_t)(v & 0xFF));
+      streamPut(shell_stream, (uint8_t)((v>>8) & 0xFF));
+    // enable led
     }
+    streamPut(shell_stream, '}');
+    setting.frequency_step = old_step;
+    return;
   }
 
   set_frequencies(start, stop, points);