From 50998fcfb916ae251309bd4b464f2c122e8cb30d Mon Sep 17 00:00:00 2001
From: jaseg <git-bigdata-wsl-arch@jaseg.de>
Date: Fri, 9 Apr 2021 18:38:02 +0200
Subject: Repo re-org
---
controller/fw/src/protocol.c | 44 --------------------------------------------
1 file changed, 44 deletions(-)
delete mode 100644 controller/fw/src/protocol.c
(limited to 'controller/fw/src/protocol.c')
diff --git a/controller/fw/src/protocol.c b/controller/fw/src/protocol.c
deleted file mode 100644
index 6b7d8b7..0000000
--- a/controller/fw/src/protocol.c
+++ /dev/null
@@ -1,44 +0,0 @@
-
-#include <assert.h>
-
-#include "sr_global.h"
-#include "dsss_demod.h"
-#include "con_usart.h"
-#include "rslib.h"
-#include "crypto.h"
-
-void handle_dsss_received(uint8_t data[static TRANSMISSION_SYMBOLS]) {
- /* Console status output */
- con_printf("DSSS data received: ");
- for (int i=0; i<TRANSMISSION_SYMBOLS; i++) {
- int x = (data[i]>>1) * (data[i]&1 ? 1 : -1);
- con_printf("%3d ", x);
- }
- con_printf("\r\n");
-
- /* Run reed-solomon error correction */
- const int sym_bits = DSSS_GOLD_CODE_NBITS + 1; /* +1 for amplitude sign bit */
- /* TODO identify erasures in DSSS demod layer */
- (void) rslib_decode(sym_bits, TRANSMISSION_SYMBOLS, (char *)data);
- /* TODO error detection & handling */
-
- /* Re-bit-pack data buffer to be bit-continuous:
- * [ . . a b c d e f ] [ . . g h i j k l ] [ . . m n o p q r ] ...
- * ==> [ a b c d e f g h ] [ i j k l m n o p ] [ q r ... ] ...
- */
- static_assert((TRANSMISSION_SYMBOLS - NPAR) * (DSSS_GOLD_CODE_NBITS + 1) == OOB_TRIGGER_LEN * 8);
- for (uint8_t i=0, j=0; i < TRANSMISSION_SYMBOLS - NPAR; i++, j += sym_bits) {
- uint32_t sym = data[i]; /* [ ... | . . X X X X X X ] for 5-bit dsss */
- data[i] = 0; /* clear for output */
-
- sym <<= 8-sym_bits; /* left-align: [ ... | X X X X X X . . ] */
- sym <<= 8; /* shift to second byte: [ ... | X X X X X X . . | . . . . . . . . ]*/
- sym >>= (j%8); /* shift to bit write offset: [ ... | . . . . X X X X | X X . . . . . . ] for offset 4 */
- data[j/8] |= sym >> 8; /* write upper byte */
- data[j/8 + 1] |= sym & 0xff; /* write lower byte */
- }
-
- /* hand off to crypto.c */
- oob_message_received(data);
-}
-
--
cgit