bdba15b366
* iButton: getting started on the worker concept * Hal delay: added global instructions_per_us variable * iButton: one wire slave * iButton: ibutton key setter * iButton: one wire host, use ibutton_hal * iButton\RFID: common pulse decoder concept * iButton: cyfral decoder * iButton: worker thread concept * iButton: metakom decoder * iButton: write key through worker * iButton: worker mode holder * iButton: worker improvements * iButton: Cyfral encoder * iButton: Metakom encoder * lib: pulse protocol helpers * iButton: Metakom decoder * iButton: Cyfral decoder * iButton worker: separate modes * iButton: libs documentation * HAL: iButton gpio modes * iButton worker: rename modes file * iButton worker, hal: move to LL * iButton CLI: worker for reading and emulation commands * iButton HAL: correct init and emulation sequence * iButton cli: moved to plain C * iButton: move to worker, small step to plain C * Libs, one wire: move to plain C * Libs: added forgotten files to compilation * iButton writer: get rid of manual disable/enable irq
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#include "pulse_glue.h"
|
|
|
|
struct PulseGlue {
|
|
int32_t hi_period;
|
|
int32_t low_period;
|
|
int32_t next_hi_period;
|
|
};
|
|
|
|
PulseGlue* pulse_glue_alloc() {
|
|
PulseGlue* pulse_glue = malloc(sizeof(PulseGlue));
|
|
pulse_glue_reset(pulse_glue);
|
|
return pulse_glue;
|
|
}
|
|
|
|
void pulse_glue_free(PulseGlue* pulse_glue) {
|
|
free(pulse_glue);
|
|
}
|
|
|
|
void pulse_glue_reset(PulseGlue* pulse_glue) {
|
|
pulse_glue->hi_period = 0;
|
|
pulse_glue->low_period = 0;
|
|
pulse_glue->next_hi_period = 0;
|
|
}
|
|
|
|
bool pulse_glue_push(PulseGlue* pulse_glue, bool polarity, uint32_t length) {
|
|
bool pop_ready = false;
|
|
if(polarity) {
|
|
if(pulse_glue->low_period == 0) {
|
|
// stage 1, accumulate hi period
|
|
pulse_glue->hi_period += length;
|
|
} else {
|
|
// stage 3, accumulate next hi period and be ready for pulse_glue_pop
|
|
pulse_glue->next_hi_period = length;
|
|
|
|
// data is ready
|
|
pop_ready = true;
|
|
}
|
|
} else {
|
|
if(pulse_glue->hi_period != 0) {
|
|
// stage 2, accumulate low period
|
|
pulse_glue->low_period += length;
|
|
}
|
|
}
|
|
|
|
return pop_ready;
|
|
}
|
|
|
|
void pulse_glue_pop(PulseGlue* pulse_glue, uint32_t* length, uint32_t* period) {
|
|
*length = pulse_glue->hi_period + pulse_glue->low_period;
|
|
*period = pulse_glue->hi_period;
|
|
|
|
pulse_glue->hi_period = pulse_glue->next_hi_period;
|
|
pulse_glue->low_period = 0;
|
|
pulse_glue->next_hi_period = 0;
|
|
}
|