8b/10b tx/rx works

1 files changed, 6 insertions, 6 deletions

diff --git a/center_fw/src/main.c b/center_fw/src/main.c
index 53b6aae..274abad 100644
--- a/center_fw/src/main.c
+++ b/center_fw/src/main.c
@@ -124,7 +124,7 @@ void TIM1_CC_IRQHandler(void) {
 }
 */
 static size_t received_symbols = 0;
-static int symbol_buf[32];
+static int symbol_buf[64];
 static size_t received_bits = 0;
 static int16_t bit_buf[256];
 size_t adc_reduced_pos = 0;
@@ -145,16 +145,13 @@ void DMA1_Channel1_IRQHandler(void) {
         int sample = buf[i];
 
         adc_reduced[adc_reduced_pos] = (sample & 0xffff)>>9;
-        if (adc_reduced_pos == 0) {
-            asm volatile ("bkpt");
-        }
 
         if ((last_sample <= threshold_adc_counts && sample >= threshold_adc_counts) ||
             (last_sample >= threshold_adc_counts && sample <= threshold_adc_counts)){
             sampling_phase = sample_per_baud / 4; /* /2 for half baud sampling point, /2 for sinusoidal edge shape */
 
         } else if (sampling_phase == 0) {
-            int bit = sample < threshold_adc_counts;
+            int bit = sample > threshold_adc_counts;
             adc_reduced[adc_reduced_pos] |= 0x80;
 
             bit_buf[received_bits] = bit;
@@ -171,7 +168,10 @@ void DMA1_Channel1_IRQHandler(void) {
             sampling_phase--;
         }
 
-        adc_reduced_pos = (adc_reduced_pos+1) % COUNT_OF(adc_reduced);
+        adc_reduced_pos++;
+        if (adc_reduced_pos == COUNT_OF(adc_reduced)) {
+            adc_reduced_pos =0;
+        }
         last_sample = sample;
     }