altos/telelco: Make the RSSI led turn red when no packet is received
authorKeith Packard <keithp@keithp.com>
Mon, 15 Oct 2012 07:24:57 +0000 (00:24 -0700)
committerKeith Packard <keithp@keithp.com>
Mon, 15 Oct 2012 07:24:57 +0000 (00:24 -0700)
This involved splitting out the notion of ever having received an
answer and having received an answer from the last query.

Signed-off-by: Keith Packard <keithp@keithp.com>
src/telelco-v0.1/ao_lco.c

index df7f865..79f3896 100644 (file)
@@ -43,6 +43,7 @@ static uint8_t        ao_lco_box;
 static uint8_t ao_lco_armed;
 static uint8_t ao_lco_firing;
 static uint8_t ao_lco_valid;
+static uint8_t ao_lco_got_channels;
 static uint16_t        ao_lco_tick_offset;
 
 static struct ao_pad_query     ao_pad_query;
@@ -77,7 +78,7 @@ ao_lco_box_present(uint8_t box)
 static uint8_t
 ao_lco_pad_present(uint8_t pad)
 {
-       if (!ao_lco_valid || !ao_pad_query.channels)
+       if (!ao_lco_got_channels || !ao_pad_query.channels)
                return pad == 0;
        if (pad >= AO_PAD_MAX_CHANNELS)
                return 0;
@@ -151,7 +152,7 @@ ao_lco_input(void)
                                        ao_quadrature_count[AO_QUADRATURE_PAD] = new_box;
                                        if (ao_lco_box != new_box) {
                                                ao_lco_box = new_box;
-                                               ao_lco_valid = 0;
+                                               ao_lco_got_channels = 0;
                                                ao_lco_set_box();
                                        }
                                }
@@ -213,13 +214,15 @@ ao_lco_update(void)
 
        r = ao_lco_query(ao_lco_box, &ao_pad_query, &ao_lco_tick_offset);
        if (r == AO_RADIO_CMAC_OK) {
-               c = ao_lco_valid;
+               c = ao_lco_got_channels;
+               ao_lco_got_channels = 1;
                ao_lco_valid = 1;
                if (!c) {
                        ao_lco_pad = ao_lco_pad_first();
                        ao_lco_set_pad();
                }
-       }
+       } else
+               ao_lco_valid = 0;
 
 #if 0
        PRINTD("lco_query success arm_status %d i0 %d i1 %d i2 %d i3 %d\n",
@@ -266,6 +269,7 @@ ao_lco_search(void)
        else
                ao_lco_min_box = ao_lco_max_box = ao_lco_box = 0;
        ao_lco_valid = 0;
+       ao_lco_got_channels = 0;
        ao_lco_pad = 0;
 }