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Generic tracing; removed iso14a_XX-functions, removed traceLen as global varible

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This commit is contained in:
Martin Holst Swende 2015-02-07 20:49:40 +01:00
commit 3000dc4e7e
12 changed files with 160 additions and 167 deletions
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88
armsrc/util.c
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@ -14,7 +14,6 @@
#include "apps.h"
#include "BigBuf.h"
int tracing = TRUE;
void print_result(char *name, uint8_t *buf, size_t len) {
@ -429,91 +428,4 @@ uint32_t RAMFUNC GetCountSspClk(){
return tmp_count;
}
}
void iso14a_clear_trace() {
clear_trace();
}
void iso14a_set_tracing(bool enable) {
set_tracing(enable);
}
void clear_trace() {
uint8_t *trace = BigBuf_get_addr();
uint16_t max_traceLen = BigBuf_max_traceLen();
memset(trace, 0x44, max_traceLen);
traceLen = 0;
}
void set_tracing(bool enable) {
tracing = enable;
}
/**
This is a function to store traces. All protocols can use this generic tracer-function.
The traces produced by calling this function can be fetched on the client-side
by 'hf list raw', alternatively 'hf list <proto>' for protocol-specific
annotation of commands/responses.
**/
bool RAMFUNC LogTrace(const uint8_t *btBytes, uint16_t iLen, uint32_t timestamp_start, uint32_t timestamp_end, uint8_t *parity, bool readerToTag)
{
if (!tracing) return FALSE;
uint8_t *trace = BigBuf_get_addr();
uint16_t num_paritybytes = (iLen-1)/8 + 1; // number of valid paritybytes in *parity
uint16_t duration = timestamp_end - timestamp_start;
// Return when trace is full
uint16_t max_traceLen = BigBuf_max_traceLen();
if (traceLen + sizeof(iLen) + sizeof(timestamp_start) + sizeof(duration) + num_paritybytes + iLen >= max_traceLen) {
tracing = FALSE; // don't trace any more
return FALSE;
}
// Traceformat:
// 32 bits timestamp (little endian)
// 16 bits duration (little endian)
// 16 bits data length (little endian, Highest Bit used as readerToTag flag)
// y Bytes data
// x Bytes parity (one byte per 8 bytes data)
// timestamp (start)
trace[traceLen++] = ((timestamp_start >> 0) & 0xff);
trace[traceLen++] = ((timestamp_start >> 8) & 0xff);
trace[traceLen++] = ((timestamp_start >> 16) & 0xff);
trace[traceLen++] = ((timestamp_start >> 24) & 0xff);
// duration
trace[traceLen++] = ((duration >> 0) & 0xff);
trace[traceLen++] = ((duration >> 8) & 0xff);
// data length
trace[traceLen++] = ((iLen >> 0) & 0xff);
trace[traceLen++] = ((iLen >> 8) & 0xff);
// readerToTag flag
if (!readerToTag) {
trace[traceLen - 1] |= 0x80;
}
// data bytes
if (btBytes != NULL && iLen != 0) {
memcpy(trace + traceLen, btBytes, iLen);
}
traceLen += iLen;
// parity bytes
if (parity != NULL && iLen != 0) {
memcpy(trace + traceLen, parity, num_paritybytes);
}
traceLen += num_paritybytes;
if(traceLen +4 < max_traceLen)
{ //If it hadn't been cleared, for whatever reason..
memset(trace+traceLen,0x44, 4);
}
return TRUE;
}