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Add notes about 2MHz/4MHz mode and binary size.

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Also move a couple more things under #ifdef DEBUG in an attempt to
reduce the code size for ATmega168.
It current doesn't fit in the '168 but maybe after some more tweaks.
This commit is contained in:
Andrew Gillham
2013-08-03 13:23:02 -07:00
parent d7c1bf52a8
commit 2d31a93687
2 changed files with 14 additions and 2 deletions
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10
README
View File

@@ -1,7 +1,13 @@
SUMP compatible logic analyzer for Arduino
==========================================
NOTE: NOTE: v0.09 switched the channels BACK to pins 8-13 for trigger reliability.
NOTE: With v0.11 you can now sample at 4MHz & 2MHz rates in addition to the
previous 1MHz and lower rates. This is done via unrolled loops which
makes the source code huge but also the binary takes much more of the flash.
v0.11 is just slightly to big for an ATmega168's flash. You can comment
out either captureInline2mhz() or captureInline4mhz() and it will fit.
NOTE: v0.09 switched the channels BACK to pins 8-13 for trigger reliability.
Please report any issues. Uncomment USE_PORTD for pins 2-7.
This Arduino sketch implements a SUMP protocol compatible with the standard
@@ -37,7 +43,7 @@ platform, but on the mac it is here by default:
To use this with the original or alternative SUMP clients,
use these settings:
Sampling rate: 1MHz (or lower)
Sampling rate: 4MHz (or lower)
Channel Groups: 0 (zero) only
Recording Size:
ATmega168: 532 (or lower)

6
logic_analyzer.ino
View File

@@ -516,6 +516,7 @@ void captureMicro() {
* Arduino digital pin 8 is being used here.
*/
DEBUG_ENABLE;
#ifdef DEBUG
DEBUG_ON;
delayMicroseconds(20);
DEBUG_OFF;
@@ -524,6 +525,7 @@ void captureMicro() {
delayMicroseconds(20);
DEBUG_OFF;
delayMicroseconds(20);
#endif
if (delayTime == 1) {
/*
@@ -691,6 +693,7 @@ void triggerMicro() {
* Arduino digital pin 8 is being used here.
*/
DEBUG_ENABLE;
#ifdef DEBUG
DEBUG_ON;
delayMicroseconds(20);
DEBUG_OFF;
@@ -699,6 +702,7 @@ void triggerMicro() {
delayMicroseconds(20);
DEBUG_OFF;
delayMicroseconds(20);
#endif
if (delayTime == 1) {
/*
@@ -1027,3 +1031,5 @@ void debugdump() {