From b43ea3be32658afae296633ea6afe470430fe5e8 Mon Sep 17 00:00:00 2001
From: iceman1001 <iceman@iuse.se>
Date: Sun, 4 Aug 2019 20:05:30 +0200
Subject: [PATCH] chg: xmodem

---
 common/crc16.c | 4 ++++
 common/crc16.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/common/crc16.c b/common/crc16.c
index 47d408660..f2a6558b8 100644
--- a/common/crc16.c
+++ b/common/crc16.c
@@ -31,6 +31,7 @@ void init_table(CrcType_t crctype) {
             generate_table(CRC16_POLY_CCITT, true);
             break;
         case CRC_FELICA:
+        case CRC_XMODEM:
             generate_table(CRC16_POLY_CCITT, false);
             break;
         case CRC_LEGIC:
@@ -172,6 +173,7 @@ void compute_crc(CrcType_t ct, const uint8_t *d, size_t n, uint8_t *first, uint8
             crc = crc16_iclass(d, n);
             break;
         case CRC_FELICA:
+        case CRC_XMODEM:
             crc = crc16_xmodem(d, n);
             break;
         case CRC_CCITT:
@@ -204,6 +206,7 @@ uint16_t Crc16ex(CrcType_t ct, const uint8_t *d, size_t n) {
         case CRC_ICLASS:
             return crc16_iclass(d, n);
         case CRC_FELICA:
+        case CRC_XMODEM:
             return crc16_xmodem(d, n);
         case CRC_CCITT:
             return crc16_ccitt(d, n);
@@ -244,6 +247,7 @@ bool check_crc(CrcType_t ct, const uint8_t *d, size_t n) {
         case CRC_ICLASS:
             return (crc16_iclass(d, n) == 0);
         case CRC_FELICA:
+        case CRC_XMODEM:
             return (crc16_xmodem(d, n) == 0);
         case CRC_CCITT:
             return (crc16_ccitt(d, n) == 0);
diff --git a/common/crc16.h b/common/crc16.h
index cc29d3ee0..9c9df1d1f 100644
--- a/common/crc16.h
+++ b/common/crc16.h
@@ -30,6 +30,7 @@ typedef enum {
     CRC_LEGIC,
     CRC_CCITT,
     CRC_KERMIT,
+    CRC_XMODEM,
 } CrcType_t;
 
 uint16_t update_crc16_ex(uint16_t crc, uint8_t c, uint16_t polynomial);