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Merge branch 'master' of https://github.com/Snigelson/pytimex

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Simon Larsson
2021-08-11 08:48:58 +02:00
parent 3d6c59b11d b6882375f4
commit 07459092a8
1 changed files with 43 additions and 22 deletions
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timex_transcoder/timex_transcoder.ino
+43 -22
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@@ -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();
}