add individual LED configuration over USB ethernet

usb_host.c

@@ -4,6 +4,7 @@
 #include <string.h>
 
 #include "pico/stdlib.h"
+#include "pico/multicore.h"
 #include "pio_usb.h"
 #include "tusb.h"
 
@@ -50,8 +51,15 @@ static void usb_host_init(void) {
 }
 
 void usb_host_main(void) {
+	// allow other core to pause host process - required for saving to flash
+	multicore_lockout_victim_init();
+
 	usb_host_init();
 
+	if (load_rgb_config()) {
+		tud_cdc_write_str("found previous RGB configuration\n");
+	}
+
 	while (true) {
 		switch ( host_state ) {
 			case HOST_MOUNTED:
@@ -242,7 +250,7 @@ static void report_desc_init(struct report_desc *descriptor) {
 	descriptor->next = NULL;
 }
 
-// free memory and teardown usb->bt report ID mappings for report descriptor struct
+// free memory for report descriptor struct
 static void report_desc_free(struct report_desc *descriptor) {
 	if (descriptor != NULL) {
 		if (descriptors == descriptor) {