Sat, 12 Jan 2019 15:02:17 +0300fix problems with recursive beremiz.h inclusion
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Sat, 12 Jan 2019 15:02:17 +0300] rev 2504
fix problems with recursive beremiz.h inclusion

Sat, 12 Jan 2019 13:57:16 +0300remove LogMessage prototype from plc_main_head.c
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Sat, 12 Jan 2019 13:57:16 +0300] rev 2503
remove LogMessage prototype from plc_main_head.c

it's not needed, because prototype is included in beremiz.h
But it caused problems with TARGET_LOGGING_DISABLE.

Mon, 07 Jan 2019 23:28:28 +0300merge
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Mon, 07 Jan 2019 23:28:28 +0300] rev 2502
merge

Sun, 06 Jan 2019 03:11:39 +0300Make online debug optional
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Sun, 06 Jan 2019 03:11:39 +0300] rev 2501
Make online debug optional

It could be useful for very small targets like Atmega (Arduino) and
for target bring-up there developer want to have running PLC program,
but has not implemented runtime communication yet.


TARGET_DEBUG_AND_RETAIN_DISABLE - completely disable debug and retain
functionality. Previously named TARGET_DEBUG_DISABLE.

TARGET_ONLINE_DEBUG_DISABLE - can be used to enable retain
functionality (no define TARGET_DEBUG_AND_RETAIN_DISABLE is used), but disable
online debug with corresponding RAM/FLASH overhead.

TARGET_LOGGING_DISABLE - disables logging functionality from runtime and PLC program

TARGET_EXT_SYNC_DISABLE - disables PLC program synchronization with
external events. For example, it could be used to synchronize several
PLCs that control motors for different axes.

By default all these options are off.

To test generate program for Generic target, put following files in
project files directory and run build.sh after generating PLC program.
This is very easy to integrate into makefile (Generic target).

[------------- build.sh --------------------------]
files=$(find $PWD/../build -iname '*.c' | grep -v POUS.c)
arm-none-eabi-gcc \
-DTARGET_DEBUG_AND_RETAIN_DISABLE \
-DTARGET_ONLINE_DEBUG_DISABLE \
-DTARGET_LOGGING_DISABLE \
-DTARGET_EXT_SYNC_DISABLE \
-flto -ffunction-sections -fdata-sections -I../../../../matiec/lib/C \
$files \
main.c \
-Wl,--Map=./program.map,--cref \
-nodefaultlibs --specs=nano.specs -Wl,--static -Wl,--gc-section -Wl,--start-group -lc -lm -lnosys -lgcc -Wl,--end-group
[------------------------------------------------]

[------------- main.c --------------------------]
#ifndef TARGET_DEBUG_AND_RETAIN_DISABLE
void Retain(void){}
void InValidateRetainBuffer(void){}
void ValidateRetainBuffer(void){}
#endif

extern void __run(void);
int main(void)
{
for(;;) {
__run();
// sleep common_ticktime__ ns
// add common_ticktime__ ns to __CURRENT_TIME
}
return 0;
}
[------------------------------------------------]

Sun, 06 Jan 2019 02:00:07 +0300Disable Python extension in First steps example
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Sun, 06 Jan 2019 02:00:07 +0300] rev 2500
Disable Python extension in First steps example

Sun, 06 Jan 2019 01:22:46 +0300use pregenerated CRC32 lookup tables for retain on Win32 and GNU/Linux
Andrey Skvortsov <andrej.skvortzov@gmail.com> [Sun, 06 Jan 2019 01:22:46 +0300] rev 2499
use pregenerated CRC32 lookup tables for retain on Win32 and GNU/Linux

This code could be possible reused on low-end targets with limited RAM.

code to generate lookup table:
[---------------------------------------------------------------------]

/* CRC lookup table and initial state. */
uint32_t crc32_table[256];

/* Generate CRC32 lookup table. */
void GenerateCRC32Table(void)
{
unsigned int i, j;
/* Use CRC-32-IEEE 802.3 polynomial 0x04C11DB7 (bit reflected). */
uint32_t poly = 0xEDB88320;

for (i = 0; i <= 0xFF; i++)
{
uint32_t c = i;
for (j = 0 ; j < 8 ; j++)
c = (c & 1) ? (c >> 1 ) ^ poly : (c >> 1);
crc32_table[i] = c;
}
}

void main(void)
{
GenerateCRC32Table();
int j=0;
for(int i=0; i<256; i++) {
printf("0x%08X, ", crc32_table[i]);
if (++j >= 8) {
j = 0;
printf("\n");
}
}
}
[---------------------------------------------------------------------]