389ff92cc1
* Makefile, Scripts: new linter * About: remove ID from IC * Firmware: remove double define for DIVC/DIVR * Scripts: check folder names too. Docker: replace syntax check with make lint. * Reformat Sources and Migrate to new file naming convention * Docker: symlink clang-format-12 to clang-format * Add coding style guide
35 lines
984 B
C
35 lines
984 B
C
#include "manchester_decoder.h"
|
|
#include <stdint.h>
|
|
|
|
static const uint8_t transitions[] = {0b00000001, 0b10010001, 0b10011011, 0b11111011};
|
|
static const ManchesterState manchester_reset_state = ManchesterStateMid1;
|
|
|
|
bool manchester_advance(
|
|
ManchesterState state,
|
|
ManchesterEvent event,
|
|
ManchesterState* next_state,
|
|
bool* data) {
|
|
bool result = false;
|
|
ManchesterState new_state;
|
|
|
|
if(event == ManchesterEventReset) {
|
|
new_state = manchester_reset_state;
|
|
} else {
|
|
new_state = transitions[state] >> event & 0x3;
|
|
if(new_state == state) {
|
|
new_state = manchester_reset_state;
|
|
} else {
|
|
if(new_state == ManchesterStateMid0) {
|
|
if(data) *data = false;
|
|
result = true;
|
|
} else if(new_state == ManchesterStateMid1) {
|
|
if(data) *data = true;
|
|
result = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
*next_state = new_state;
|
|
return result;
|
|
}
|