[FL-2393][FL-2381] iButton, OneWire: move to plain C (#1068)

* 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

firmware/targets/f7/furi_hal/furi_hal_delay.c

@@ -4,20 +4,19 @@
 #include <cmsis_os2.h>
 
 #define TAG "FuriHalDelay"
-
-static uint32_t clk_per_microsecond;
+uint32_t instructions_per_us;
 
 void furi_hal_delay_init(void) {
     CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk;
     DWT->CTRL |= DWT_CTRL_CYCCNTENA_Msk;
     DWT->CYCCNT = 0U;
-    clk_per_microsecond = SystemCoreClock / 1000000.0f;
+    instructions_per_us = SystemCoreClock / 1000000.0f;
     FURI_LOG_I(TAG, "Init OK");
 }
 
 void delay_us(float microseconds) {
     uint32_t start = DWT->CYCCNT;
-    uint32_t time_ticks = microseconds * clk_per_microsecond;
+    uint32_t time_ticks = microseconds * instructions_per_us;
     while((DWT->CYCCNT - start) < time_ticks) {
     };
 }

firmware/targets/f7/furi_hal/furi_hal_ibutton.c

@@ -3,6 +3,7 @@
 #include <furi_hal_resources.h>
 
 #include <stm32wbxx_ll_tim.h>
+#include <stm32wbxx_ll_exti.h>
 
 #include <furi.h>
 
@@ -91,16 +92,39 @@ void furi_hal_ibutton_emulate_stop() {
     }
 }
 
-void furi_hal_ibutton_start() {
+void furi_hal_ibutton_start_drive() {
     furi_hal_ibutton_pin_high();
     hal_gpio_init(&ibutton_gpio, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
 }
 
+void furi_hal_ibutton_start_drive_in_isr() {
+    hal_gpio_init(&ibutton_gpio, GpioModeOutputOpenDrain, GpioPullNo, GpioSpeedLow);
+    LL_EXTI_ClearFlag_0_31(ibutton_gpio.pin);
+}
+
+void furi_hal_ibutton_start_interrupt() {
+    furi_hal_ibutton_pin_high();
+    hal_gpio_init(&ibutton_gpio, GpioModeInterruptRiseFall, GpioPullNo, GpioSpeedLow);
+}
+
+void furi_hal_ibutton_start_interrupt_in_isr() {
+    hal_gpio_init(&ibutton_gpio, GpioModeInterruptRiseFall, GpioPullNo, GpioSpeedLow);
+    LL_EXTI_ClearFlag_0_31(ibutton_gpio.pin);
+}
+
 void furi_hal_ibutton_stop() {
     furi_hal_ibutton_pin_high();
     hal_gpio_init(&ibutton_gpio, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
 }
 
+void furi_hal_ibutton_add_interrupt(GpioExtiCallback cb, void* context) {
+    hal_gpio_add_int_callback(&ibutton_gpio, cb, context);
+}
+
+void furi_hal_ibutton_remove_interrupt() {
+    hal_gpio_remove_int_callback(&ibutton_gpio);
+}
+
 void furi_hal_ibutton_pin_low() {
     hal_gpio_write(&ibutton_gpio, false);
 }

firmware/targets/f7/furi_hal/furi_hal_rfid.c

@@ -23,6 +23,13 @@ typedef struct {
 
 FuriHalRfid* furi_hal_rfid = NULL;
 
+#define LFRFID_LL_READ_TIM TIM1
+#define LFRFID_LL_READ_CONFIG_CHANNEL LL_TIM_CHANNEL_CH1
+#define LFRFID_LL_READ_CHANNEL LL_TIM_CHANNEL_CH1N
+
+#define LFRFID_LL_EMULATE_TIM TIM2
+#define LFRFID_LL_EMULATE_CHANNEL LL_TIM_CHANNEL_CH3
+
 void furi_hal_rfid_init() {
     furi_assert(furi_hal_rfid == NULL);
     furi_hal_rfid = malloc(sizeof(FuriHalRfid));
@@ -72,7 +79,7 @@ void furi_hal_rfid_pins_reset() {
 
 void furi_hal_rfid_pins_emulate() {
     // ibutton low
-    furi_hal_ibutton_start();
+    furi_hal_ibutton_start_drive();
     furi_hal_ibutton_pin_low();
 
     // pull pin to timer out
@@ -89,7 +96,7 @@ void furi_hal_rfid_pins_emulate() {
 
 void furi_hal_rfid_pins_read() {
     // ibutton low
-    furi_hal_ibutton_start();
+    furi_hal_ibutton_start_drive();
     furi_hal_ibutton_pin_low();
 
     // dont pull rfid antenna