Rename reset options

Kconfig

@@ -55,12 +55,20 @@ config TTN_SPI_FREQ
     help
         SPI frequency to communicate between ESP32 and SX127x radio chip
 
-config TTN_RADIO_RST_KEEP_ASSERTED
-        bool "Keep RST pin asserted instead of floating"
-        default n
-        help
-          Some hardware needs RST pin to be always high for LoRa chip to function
+choice TTN_RESET
+    prompt "Reset states"
+    default TTN_RESET_STATES_FLOATING
+    help
+        Reset pin can be floating for most boards and shields.
+        A few boards/shields require the pin to be held high for operation.
 
+config TTN_RESET_STATES_FLOATING
+    bool "Toggle between low and floating"
+
+config TTN_RESET_STATES_ASSERTED
+    bool "Toggle between low and high"
+
+endchoice
 
 config TTN_BG_TASK_PRIO
     int "Background task priority"

src/hal/hal_esp32.cpp

@@ -123,18 +123,19 @@ void hal_pin_rst(u1_t val)
         return;
 
     if (val == 0 || val == 1)
-    { // drive pin
+    {
+        // drive pin
         gpio_set_level(ttn_hal.pinRst, val);
         gpio_set_direction(ttn_hal.pinRst, GPIO_MODE_OUTPUT);
     }
     else
     {
-#ifdef CONFIG_TTN_RADIO_RST_KEEP_ASSERTED
-      // drive up the pin because the hardware is nonstandard
+#if defined(CONFIG_TTN_RESET_STATES_ASSERTED)
+        // drive up the pin because the hardware is nonstandard
         gpio_set_level(ttn_hal.pinRst, 1);
         gpio_set_direction(ttn_hal.pinRst, GPIO_MODE_OUTPUT);
 #else
-      // keep pin floating
+        // keep pin floating
         gpio_set_level(ttn_hal.pinRst, val);
         gpio_set_direction(ttn_hal.pinRst, GPIO_MODE_INPUT);
 #endif