feat(ds18b20-ds2480): добавь порт F407 и асинхронную подтяжку

c/ds18b20-ds2480/ports/stm32f4/ds2480_stm32f4_hal.h

@@ -0,0 +1,32 @@
+#ifndef DS2480_STM32F4_HAL_H
+#define DS2480_STM32F4_HAL_H
+
+#include "ds2480.h"
+#include "stm32f4xx_hal.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Dedicated UART initialized by the board (clock, RX/TX AF, no IRQ/DMA).
+ * tx_port/pin/alternate let prepare generate a real >=2 ms BREAK, including
+ * recovery from a lost strong-pullup response. No reset pin is required.
+ * GPIO clock must stay enabled. UART must not be used by any other service.
+ */
+typedef struct {
+    UART_HandleTypeDef *uart;
+    GPIO_TypeDef *tx_port;
+    uint16_t tx_pin;
+    uint32_t tx_alternate;
+} ds2480_stm32f4_hal;
+
+/** Populate callbacks only; call ds2480_init afterwards to reset/calibrate.
+ * Thread/main-loop use only, with running HAL tick and interrupts enabled.
+ * UART baud rate is fixed at 9600 8N1; all transfers are single-byte.
+ */
+ds2480_status ds2480_stm32f4_hal_bind(ds2480_stm32f4_hal *context, ds2480_port *port);
+
+#ifdef __cplusplus
+}
+#endif
+#endif