feat: Configuration updates to reflect new ICs

Add crystal and fuel gauge support

Author: ClicketySplit

app/boards/arm/clickety_split_mnml/clickety_split_mnml.dtsi

@@ -19,7 +19,11 @@
         zephyr,console = &cdc_acm_uart0;
         zmk,display = &ls0xx;
 
-        zmk,battery = &vbatt;
+        /* Use MAX17048 SoC reporting */
+        zmk,battery = &max17048;
+
+        /* Fallback: estimate SoC from VDDH (often reads 100% on USB) */
+        // zmk,battery = &vbatt;
 
         zmk,kscan = &kscan0;
         zmk,matrix-transform = &default_transform;
@@ -61,6 +65,45 @@
     };
 };
 
+
+/* I2C bus for MAX17048 Fuel Gauge */
+&pinctrl {
+    i2c1_default: i2c1_default {
+        group1 {
+            psels = <
+                NRF_PSEL(TWIM_SCL, 0, 29)
+                NRF_PSEL(TWIM_SDA, 0, 31)
+            >;
+        };
+    };
+
+    i2c1_sleep: i2c1_sleep {
+        group1 {
+            psels = <
+                NRF_PSEL(TWIM_SCL, 0, 29)
+                NRF_PSEL(TWIM_SDA, 0, 31)
+            >;
+            low-power-enable;
+        };
+    };
+};
+
+&i2c1 {
+    status = "okay";
+
+    pinctrl-0 = <&i2c1_default>;
+    pinctrl-1 = <&i2c1_sleep>;
+    pinctrl-names = "default", "sleep";
+
+    clock-frequency = <I2C_BITRATE_STANDARD>; /* 100 kHz */
+
+    max17048: max17048@36 {
+        compatible = "zmk,maxim-max17048";
+        reg = <0x36>;
+        status = "okay";
+    };
+};
+
 &adc {
     status = "okay";
 };

app/boards/arm/clickety_split_mnml/clickety_split_mnml.yaml

@@ -8,12 +8,10 @@ toolchain:
   - gnuarmemb
   - xtools
 supported:
-  - adc
-  - usb_device
-  - ble
-  - ieee802154
-  - pwm
-  - watchdog
   - gpio
-  - i2c
+  - ble
+  - usb_device
   - spi
+  - i2c
+  - adc
+  - watchdog

app/boards/arm/clickety_split_mnml/clickety_split_mnml_left_defconfig

@@ -20,6 +20,9 @@ CONFIG_BUILD_OUTPUT_UF2=y
 CONFIG_CLOCK_CONTROL_NRF=y
 CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
 
+# If an external 32.768kHz Crystal is installed.
+CONFIG_CLOCK_CONTROL_NRF_K32SRC_XTAL=y
+
 # Flash Partition settings
 CONFIG_MPU_ALLOW_FLASH_WRITE=y
 CONFIG_NVS=y
@@ -41,6 +44,11 @@ CONFIG_ZMK_IDLE_SLEEP_TIMEOUT=900000
 CONFIG_ZMK_BATTERY_REPORTING=y
 CONFIG_ZMK_EXT_POWER=y
 
+# MAX17048 Fuel Gauge
+CONFIG_ZMK_MAX17048=y
+CONFIG_I2C=y
+CONFIG_SENSOR=y
+
 # Display Related Configuration Settings
 CONFIG_ZMK_DISPLAY=y
 

app/boards/arm/clickety_split_mnml/clickety_split_mnml_right_defconfig

@@ -20,6 +20,9 @@ CONFIG_BUILD_OUTPUT_UF2=y
 CONFIG_CLOCK_CONTROL_NRF=y
 CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y
 
+# If an external 32.768kHz Crystal is installed.
+CONFIG_CLOCK_CONTROL_NRF_K32SRC_XTAL=y
+
 # Flash Partition settings
 CONFIG_MPU_ALLOW_FLASH_WRITE=y
 CONFIG_NVS=y
@@ -41,6 +44,11 @@ CONFIG_ZMK_IDLE_SLEEP_TIMEOUT=900000
 CONFIG_ZMK_BATTERY_REPORTING=y
 CONFIG_ZMK_EXT_POWER=y
 
+# MAX17048 Fuel Gauge
+CONFIG_ZMK_MAX17048=y
+CONFIG_I2C=y
+CONFIG_SENSOR=y
+
 # Display Related Configuration Settings
 CONFIG_ZMK_DISPLAY=y