firmware: drivers: si446x: Fixing unit test errors

Author: mgm8

firmware/drivers/si446x/si446x.c

@@ -26,7 +26,7 @@
  * \author Gabriel Mariano Marcelino <gabriel.mm8@gmail.com>
  * \author Miguel Boing <miguelboing13@gmail.com>
  * 
- * \version 1.0.0
+ * \version 1.1.0
  * 
  * \date 2024/09/09
  * 
@@ -63,6 +63,20 @@ const uint8_t SI446X_CONFIGURATION_DATA[] = RADIO_CONFIGURATION_DATA_ARRAY;
 
 uint8_t si446x_mode = 0xFF;
 
+/**
+ * \brief Enables the SPI communication with the device.
+ *
+ * \return None.
+ */
+void si446x_slave_enable(void);
+
+/**
+ * \brief Disables the SPI communication with the device.
+ *
+ * \return None.
+ */
+void si446x_slave_disable(void);
+
 int si446x_init(void)
 {
 #if defined(CONFIG_DRIVERS_DEBUG_ENABLED) && (CONFIG_DRIVERS_DEBUG_ENABLED == 1)

firmware/drivers/si446x/si446x.h

@@ -26,7 +26,7 @@
  * \author Gabriel Mariano Marcelino <gabriel.mm8@gmail.com>
  * \author Miguel Boing <miguelboing13@gmail.com>
  * 
- * \version 1.0.0
+ * \version 1.1.0
  * 
  * \date 2024/09/09
  * 
@@ -75,6 +75,20 @@ typedef enum
  */
 int si446x_init(void);
 
+/**
+ * \brief Shutdown the device.
+ *
+ * \return None.
+ */
+void si446x_shutdown(void);
+
+/**
+ * \brief Power-up the device.
+ *
+ * \return None.
+ */
+void si446x_power_up(void);
+
 /**
  * \brief Configures the registers of the SI446X device.
  *