Reduce smbus speed to 50 KHz

src/board/system76/galp3-c/main.c

@@ -56,7 +56,7 @@ void ac_adapter() {
     static struct Gpio __code ACIN_N = GPIO(B, 6);
     static struct Gpio __code LED_ACIN = GPIO(C, 7);
 
-    static bool last = false;
+    static bool last = true;
 
     // Check if the adapter line goes low
     bool new = gpio_get(&ACIN_N);
@@ -68,9 +68,12 @@ void ac_adapter() {
         printf("Power adapter ");
         if (new) {
             printf("unplugged\n");
+            battery_charger_disable();
         } else {
             printf("plugged in\n");
+            battery_charger_enable();
         }
+        battery_debug();
     }
 
     last = new;

src/board/system76/galp3-c/smbus.c

@@ -9,8 +9,8 @@ void smbus_init(void) {
     SMB45P3USL = 0x5C;
     SMB45P3USH = 0x01;
 
-    // Clock to 400 KHz
-    SCLKTSA = 3;
+    // Clock to 50 KHz
+    SCLKTSA = 1;
 
     // Enable host interface
     HOCTL2A = 1 << 0;