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tpms_app_i.c
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tpms_app_i.c
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#include "tpms_app_i.h"
#define TAG "TPMS"
#include <flipper_format/flipper_format_i.h>
void tpms_preset_init(
void* context,
const char* preset_name,
uint32_t frequency,
uint8_t* preset_data,
size_t preset_data_size) {
furi_assert(context);
TPMSApp* app = context;
furi_string_set(app->txrx->preset->name, preset_name);
app->txrx->preset->frequency = frequency;
app->txrx->preset->data = preset_data;
app->txrx->preset->data_size = preset_data_size;
}
bool tpms_set_preset(TPMSApp* app, const char* preset) {
if(!strcmp(preset, "FuriHalSubGhzPresetOok270Async")) {
furi_string_set(app->txrx->preset->name, "AM270");
} else if(!strcmp(preset, "FuriHalSubGhzPresetOok650Async")) {
furi_string_set(app->txrx->preset->name, "AM650");
} else if(!strcmp(preset, "FuriHalSubGhzPreset2FSKDev238Async")) {
furi_string_set(app->txrx->preset->name, "FM238");
} else if(!strcmp(preset, "FuriHalSubGhzPreset2FSKDev476Async")) {
furi_string_set(app->txrx->preset->name, "FM476");
} else if(!strcmp(preset, "FuriHalSubGhzPresetCustom")) {
furi_string_set(app->txrx->preset->name, "CUSTOM");
} else {
FURI_LOG_E(TAG, "Unknown preset");
return false;
}
return true;
}
void tpms_get_frequency_modulation(TPMSApp* app, FuriString* frequency, FuriString* modulation) {
furi_assert(app);
if(frequency != NULL) {
furi_string_printf(
frequency,
"%03ld.%02ld",
app->txrx->preset->frequency / 1000000 % 1000,
app->txrx->preset->frequency / 10000 % 100);
}
if(modulation != NULL) {
furi_string_printf(modulation, "%.2s", furi_string_get_cstr(app->txrx->preset->name));
}
}
void tpms_begin(TPMSApp* app, uint8_t* preset_data) {
furi_assert(app);
UNUSED(preset_data);
furi_hal_subghz_reset();
furi_hal_subghz_idle();
furi_hal_subghz_load_custom_preset(preset_data);
furi_hal_gpio_init(&gpio_cc1101_g0, GpioModeInput, GpioPullNo, GpioSpeedLow);
app->txrx->txrx_state = TPMSTxRxStateIDLE;
}
uint32_t tpms_rx(TPMSApp* app, uint32_t frequency) {
furi_assert(app);
if(!furi_hal_subghz_is_frequency_valid(frequency)) {
furi_crash("TPMS: Incorrect RX frequency.");
}
furi_assert(
app->txrx->txrx_state != TPMSTxRxStateRx && app->txrx->txrx_state != TPMSTxRxStateSleep);
furi_hal_subghz_idle();
uint32_t value = furi_hal_subghz_set_frequency_and_path(frequency);
furi_hal_gpio_init(&gpio_cc1101_g0, GpioModeInput, GpioPullNo, GpioSpeedLow);
furi_hal_subghz_flush_rx();
furi_hal_subghz_rx();
furi_hal_subghz_start_async_rx(subghz_worker_rx_callback, app->txrx->worker);
subghz_worker_start(app->txrx->worker);
app->txrx->txrx_state = TPMSTxRxStateRx;
return value;
}
void tpms_idle(TPMSApp* app) {
furi_assert(app);
furi_assert(app->txrx->txrx_state != TPMSTxRxStateSleep);
furi_hal_subghz_idle();
app->txrx->txrx_state = TPMSTxRxStateIDLE;
}
void tpms_rx_end(TPMSApp* app) {
furi_assert(app);
furi_assert(app->txrx->txrx_state == TPMSTxRxStateRx);
if(subghz_worker_is_running(app->txrx->worker)) {
subghz_worker_stop(app->txrx->worker);
furi_hal_subghz_stop_async_rx();
}
furi_hal_subghz_idle();
app->txrx->txrx_state = TPMSTxRxStateIDLE;
}
void tpms_sleep(TPMSApp* app) {
furi_assert(app);
furi_hal_subghz_sleep();
app->txrx->txrx_state = TPMSTxRxStateSleep;
}
void tpms_hopper_update(TPMSApp* app) {
furi_assert(app);
switch(app->txrx->hopper_state) {
case TPMSHopperStateOFF:
case TPMSHopperStatePause:
return;
case TPMSHopperStateRSSITimeOut:
if(app->txrx->hopper_timeout != 0) {
app->txrx->hopper_timeout--;
return;
}
break;
default:
break;
}
float rssi = -127.0f;
if(app->txrx->hopper_state != TPMSHopperStateRSSITimeOut) {
// See RSSI Calculation timings in CC1101 17.3 RSSI
rssi = furi_hal_subghz_get_rssi();
// Stay if RSSI is high enough
if(rssi > -90.0f) {
app->txrx->hopper_timeout = 10;
app->txrx->hopper_state = TPMSHopperStateRSSITimeOut;
return;
}
} else {
app->txrx->hopper_state = TPMSHopperStateRunnig;
}
// Select next frequency
if(app->txrx->hopper_idx_frequency <
subghz_setting_get_hopper_frequency_count(app->setting) - 1) {
app->txrx->hopper_idx_frequency++;
} else {
app->txrx->hopper_idx_frequency = 0;
}
if(app->txrx->txrx_state == TPMSTxRxStateRx) {
tpms_rx_end(app);
};
if(app->txrx->txrx_state == TPMSTxRxStateIDLE) {
subghz_receiver_reset(app->txrx->receiver);
app->txrx->preset->frequency =
subghz_setting_get_hopper_frequency(app->setting, app->txrx->hopper_idx_frequency);
tpms_rx(app, app->txrx->preset->frequency);
}
}