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Reverted the BIG_ENDIAN additions as they are not needed since bacint is converting integers in an endian neutral manner.

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This commit is contained in:
skarg
2010-10-31 19:13:10 +00:00
parent d6cee12acb
commit 437112cc52
1 changed files with 63 additions and 87 deletions
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bacnet-stack/src/bacint.c
+63 -87
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@@ -41,23 +41,12 @@
/** @file bacint.c Encode/Decode Integer Types */
#ifndef BIG_ENDIAN
#error Define BIG_ENDIAN=0 or BIG_ENDIAN=1 for BACnet Stack in compiler settings
#endif
int encode_unsigned16(
uint8_t * apdu,
uint16_t value)
{
uint8_t *in = (uint8_t *)&value;
#if BIG_ENDIAN
apdu[0] = in[0];
apdu[1] = in[1];
#else
apdu[0] = in[1];
apdu[1] = in[0];
#endif
apdu[0] = (uint8_t) ((value & 0xff00) >> 8);
apdu[1] = (uint8_t) (value & 0x00ff);
return 2;
}
@@ -66,17 +55,11 @@ int decode_unsigned16(
uint8_t * apdu,
uint16_t * value)
{
uint8_t *out = (uint8_t *)value;
if (out) {
#if BIG_ENDIAN
out[0] = apdu[0];
out[1] = apdu[1];
#else
out[0] = apdu[1];
out[1] = apdu[0];
#endif
if (value) {
*value = (uint16_t) ((((uint16_t) apdu[0]) << 8) & 0xff00);
*value |= ((uint16_t) (((uint16_t) apdu[1]) & 0x00ff));
}
return 2;
}
@@ -84,17 +67,9 @@ int encode_unsigned24(
uint8_t * apdu,
uint32_t value)
{
uint8_t *in = (uint8_t *)&value;
#if BIG_ENDIAN
apdu[0] = in[1];
apdu[1] = in[2];
apdu[2] = in[3];
#else
apdu[0] = in[2];
apdu[1] = in[1];
apdu[2] = in[0];
#endif
apdu[0] = (uint8_t) ((value & 0xff0000) >> 16);
apdu[1] = (uint8_t) ((value & 0x00ff00) >> 8);
apdu[2] = (uint8_t) (value & 0x0000ff);
return 3;
}
@@ -103,20 +78,10 @@ int decode_unsigned24(
uint8_t * apdu,
uint32_t * value)
{
uint8_t *out = (uint8_t *)value;
if (out) {
#if BIG_ENDIAN
out[0] = 0;
out[1] = apdu[0];
out[2] = apdu[1];
out[3] = apdu[2];
#else
out[0] = apdu[2];
out[1] = apdu[1];
out[2] = apdu[0];
out[3] = 0;
#endif
if (value) {
*value = ((uint32_t) ((((uint32_t) apdu[0]) << 16) & 0x00ff0000));
*value |= (uint32_t) ((((uint32_t) apdu[1]) << 8) & 0x0000ff00);
*value |= ((uint32_t) (((uint32_t) apdu[2]) & 0x000000ff));
}
return 3;
@@ -126,19 +91,10 @@ int encode_unsigned32(
uint8_t * apdu,
uint32_t value)
{
uint8_t *in = (uint8_t *)&value;
#if BIG_ENDIAN
apdu[0] = in[0];
apdu[1] = in[1];
apdu[2] = in[2];
apdu[3] = in[3];
#else
apdu[0] = in[3];
apdu[1] = in[2];
apdu[2] = in[1];
apdu[3] = in[0];
#endif
apdu[0] = (uint8_t) ((value & 0xff000000) >> 24);
apdu[1] = (uint8_t) ((value & 0x00ff0000) >> 16);
apdu[2] = (uint8_t) ((value & 0x0000ff00) >> 8);
apdu[3] = (uint8_t) (value & 0x000000ff);
return 4;
}
@@ -147,21 +103,13 @@ int decode_unsigned32(
uint8_t * apdu,
uint32_t * value)
{
uint8_t *out = (uint8_t *)value;
if (out) {
#if BIG_ENDIAN
out[0] = apdu[0];
out[1] = apdu[1];
out[2] = apdu[2];
out[3] = apdu[3];
#else
out[0] = apdu[3];
out[1] = apdu[2];
out[2] = apdu[1];
out[3] = apdu[0];
#endif
if (value) {
*value = ((uint32_t) ((((uint32_t) apdu[0]) << 24) & 0xff000000));
*value |= ((uint32_t) ((((uint32_t) apdu[1]) << 16) & 0x00ff0000));
*value |= ((uint32_t) ((((uint32_t) apdu[2]) << 8) & 0x0000ff00));
*value |= ((uint32_t) (((uint32_t) apdu[3]) & 0x000000ff));
}
return 4;
}
@@ -194,17 +142,25 @@ int encode_signed16(
uint8_t * apdu,
int16_t value)
{
return encode_unsigned16 (apdu, value);
apdu[0] = (uint8_t) ((value & 0xff00) >> 8);
apdu[1] = (uint8_t) (value & 0x00ff);
return 2;
}
int decode_signed16(
uint8_t * apdu,
int32_t * value)
{
int16_t val;
decode_unsigned16 (apdu, (uint16_t *)&val);
*value = (int32_t)val;
if (value) {
/* negative - bit 7 is set */
if (apdu[0] & 0x80)
*value = 0xFFFF0000;
else
*value = 0;
*value |= ((int32_t) ((((int32_t) apdu[0]) << 8) & 0x0000ff00));
*value |= ((int32_t) (((int32_t) apdu[1]) & 0x000000ff));
}
return 2;
}
@@ -213,7 +169,11 @@ int encode_signed24(
uint8_t * apdu,
int32_t value)
{
return encode_unsigned24 (apdu, value);
apdu[0] = (uint8_t) ((value & 0xff0000) >> 16);
apdu[1] = (uint8_t) ((value & 0x00ff00) >> 8);
apdu[2] = (uint8_t) (value & 0x0000ff);
return 3;
}
int decode_signed24(
@@ -221,10 +181,14 @@ int decode_signed24(
int32_t * value)
{
if (value) {
decode_unsigned24 (apdu, (uint32_t *)value);
if (*value & 0x00800000) {
*value |= 0xFF000000;
}
/* negative - bit 7 is set */
if (apdu[0] & 0x80)
*value = 0xFF000000;
else
*value = 0;
*value |= ((int32_t) ((((int32_t) apdu[0]) << 16) & 0x00ff0000));
*value |= ((int32_t) ((((int32_t) apdu[1]) << 8) & 0x0000ff00));
*value |= ((int32_t) (((int32_t) apdu[2]) & 0x000000ff));
}
return 3;
@@ -234,14 +198,26 @@ int encode_signed32(
uint8_t * apdu,
int32_t value)
{
return encode_unsigned32 (apdu, value);
apdu[0] = (uint8_t) ((value & 0xff000000) >> 24);
apdu[1] = (uint8_t) ((value & 0x00ff0000) >> 16);
apdu[2] = (uint8_t) ((value & 0x0000ff00) >> 8);
apdu[3] = (uint8_t) (value & 0x000000ff);
return 4;
}
int decode_signed32(
uint8_t * apdu,
int32_t * value)
{
return decode_unsigned32 (apdu, (uint32_t *)value);
if (value) {
*value = ((int32_t) ((((int32_t) apdu[0]) << 24) & 0xff000000));
*value |= ((int32_t) ((((int32_t) apdu[1]) << 16) & 0x00ff0000));
*value |= ((int32_t) ((((int32_t) apdu[2]) << 8) & 0x0000ff00));
*value |= ((int32_t) (((int32_t) apdu[3]) & 0x000000ff));
}
return 4;
}
/* end of decoding_encoding.c */