Michel2/pytimex
1
0
Fork 1
mirror of https://github.com/Snigelson/pytimex.git synced 2026-07-27 19:56:08 +00:00
Code Issues Releases Activity

More Blaster code cleanup

Browse Source 
Change package to packet throughout. Rename INTERBYTE to INTERPACK
since that's the only thing it's used for now. Change the turbo
mode timings.

Add some documentation on using the Blaster with the original
software.
This commit is contained in:
Simon Larsson
2021-08-10 18:08:30 +02:00
parent 7ec12dbd19
commit b6882375f4
1 changed files with 43 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
timex_transcoder/timex_transcoder.ino
+43 -22
View File
@@ -5,11 +5,35 @@
* such as Duemillanove, Uno, Nano, and others.
*
* The transmission is paced by the transmission rate between PC and
* Blaster being 9600 baud. Inter-package delay can be done on either PC
* or blaster side. The first case works better with the Python software
* and I believe the latter with the original software. (TODO: verify)
* Blaster being 9600 baud. Inter-packet delay can be done on either PC
* or blaster side. For the Python script, it's easier to have the
* blaster handle it. The original Timex software implements its own
* delays, but they do not interfere with the blaster ones.
*/
/* To use, connect any bright LED from pin 12 to GND. Normally I'd
* recommend putting a resistor in series, but the pulses are fairly
* short so if you're not doing anything permanent it should work
* fine without it. Test it by connecting pin 10 to GND. The LED
* will look permanently lit, but hold up the watch in "COMM MODE"
* and it should beep and show "SYNCING".
*
* For the Python software, the data will be sent over USB.
* Plug and play!
*
* For the original Timex software, use an RS232 to UART converter
* and connect to pin 0 and 1 (RX and TX respectively) of the
* Arduino. You'll need to press the reset button before each transfer.
*
* It should, in theory, be possible to connect the CTS signal of the
* RS232 adapter to pin 11 to have it reset automatically. I say in
* theory since I have no adapter with that signal. Another way would
* be to power the blaster from that pin, like the original adapter.
*
*/
/* If TURBO_MODE is defined, the blasting will be faster. It works fine
* most of the time, but the slower speed will probably be more reliable
* in worse lighting conditions.
@@ -61,13 +85,15 @@ inline void startTimer(int lowcnt, int hicnt)
#define BITLEN_H 1
/* Bit interval */
#define SPACELEN_L 206
#define SPACELEN_H 28
#define SPACELEN_L 0
#define SPACELEN_H 27
#define INTERBYTE_L 0
#define INTERBYTE_H 180
/* Inter-packet delay */
#define INTERPACK_L 0
#define INTERPACK_H 180
#define INTERBYTE_PACKAGE 25
/* Interpacket delay multiplier */
#define INTERPACK_MUL 25
#else
/* Timing values based more on the CRT timings. */
@@ -81,13 +107,12 @@ inline void startTimer(int lowcnt, int hicnt)
#define SPACELEN_L 206
#define SPACELEN_H 28
/* Mostly a mode-up value that when combined with INTERBYTE_PACKAGE ends up with a sensible delay between packets */
#define INTERBYTE_L 0
#define INTERBYTE_H 220
/* Inter-packet delay. Mostly made up. */
#define INTERPACK_L 0
#define INTERPACK_H 220
/* Number of times to repeat interbyte delay between packages */
/* Set this to 0 for compatibility with original software */
#define INTERBYTE_PACKAGE 45
/* Number of times to repeat inter-packet delay */
#define INTERPACK_MUL 45
#endif
bool past55sync;
@@ -107,8 +132,8 @@ void setupTranscode()
#define interPacketDelay() do { \
digitalWrite(LEDPIN, LOW); \
for (unsigned int ipd=0; ipd<INTERBYTE_PACKAGE; ipd++) { \
startTimer(INTERBYTE_L, INTERBYTE_H); \
for (unsigned int ipd=0; ipd<INTERPACK_MUL; ipd++) { \
startTimer(INTERPACK_L, INTERPACK_H); \
waitTimer(); \
} \
digitalWrite(LEDPIN, HIGH); \
@@ -117,10 +142,6 @@ void setupTranscode()
void transcodeByte(unsigned char curbyte)
{
if (curbyte != 0x55) {
if (!past55sync) {
/* Delay between 0x55-sync and 0xAA-sync - TODO: Test if this is necessary; doesn't seem to be. */
//interPacketDelay();
}
past55sync = true;
if (curbyte != 0xAA) {
pastAAsync = true;
@@ -128,9 +149,9 @@ void transcodeByte(unsigned char curbyte)
}
if (pastAAsync) {
/* Delay before each package */
/* Delay before each packet */
if (packetLeft <= 0) {
/* Get new packet length. First byte of package is package length, including this length byte. */
/* Get new packet length. First byte of packet is packet length, including this length byte. */
packetLeft = curbyte;
interPacketDelay();
}