samples: sensor: Modified Readme for grow_r502a

Modified readme for grow_r502a sample w.r.t
latest changes on driver like attributes and
LED controlling via zephyr LED subsystem APIs.

Signed-off-by: Dinesh Kumar K <[email protected]>

Author: DineshDK03

samples/sensor/grow_r502a/README.rst

@@ -8,18 +8,15 @@ Overview
 
 This sample has the below functionalities:
 
+#. Sensor LED is controlled using led APIs from zephyr subsystem.
 #. Shows the number of fingerprints stored in the sensor.
+#. Shows the sensor device's configurations like baud rate, library size, address and data packet size in UART frame.
 #. When SENSOR_ATTR_RECORD_FREE_IDX is set then it search for free index in sensor library.
 #. When SENSOR_ATTR_RECORD_ADD is set then it adds a new fingerprint to the sensor.
 #. When SENSOR_ATTR_RECORD_FIND is set then it tries to find a match for the input fingerprint. On finding a match it returns ID and confidence.
 #. When SENSOR_ATTR_RECORD_DEL is set then it deletes a fingerprint from the sensor.
 
-Note: Fingerprint add & delete functionalities work only when SENSOR_TRIG_TOUCH is set.
-Tricolored LED in the sensor hardware will, flash on the below conditions:
-
-#. On successful addition or deletion of fingerprint it will flash in blue three times.
-#. On finding a match for the input fingerprint it will flash in purple.
-#. In all other cases it will flash in red.
+Note: Fingerprint add functionality work only when SENSOR_TRIG_TOUCH is set.
 
 Wiring
 *******
@@ -42,28 +39,26 @@ build this sample app using:
 
 .. zephyr-app-commands::
    :zephyr-app: samples/sensor/grow_r502a
-   :board: nrf52840dk/nrf52840
+   :board: esp32_devkitc_wroom/esp32/procpu
    :goals: build flash
 
 Sample Output
 *************
 
 .. code-block:: console
 
-    *** Booting Zephyr OS build zephyr-v3.1.0-2640-g328bb73113d4  ***
-    template count : 0
+    *** Booting Zephyr OS build v3.6.0-3147-g8ae1a2e2718e ***
+    template count : 4
+    baud 57600
+    addr 0xffffffff
+    lib_size 200
+    data_pkt_size 128
     Fingerprint Deleted at ID #3
-    Fingerprint template free idx at ID #0
-    Waiting for valid finger to enroll as ID #0
+    Fingerprint template free idx at ID #3
+    Waiting for valid finger to enroll as ID #3
     Place your finger
-    Fingerprint successfully stored at #0
-    template count : 1
-    Matched ID : 0
-    confidence : 170
-    template count : 1
-    Matched ID : 0
-    confidence : 136
-    template count : 1
-    Matched ID : 0
-    confidence : 318
+    Fingerprint successfully stored at #3
+    template count : 4
+    Matched ID : 2
+    confidence : 110
     <repeats endlessly>