Allocated memory for the PFS buffer dynamically. Saves 60 bytes.

Author: microbit-sam

inc/bluetooth/MicroBitPartialFlashingService.h

@@ -101,7 +101,8 @@ class MicroBitPartialFlashingService
     uint8_t blockPacketCount = 0;
 
     // Keep track of blocks of data
-    uint32_t block[16];
+    // uint32_t block[16]; // Replaced with pointer, memory allocated when PFS is used
+    uint32_t *block = NULL;
     uint8_t  blockNum = 0;
     uint32_t offset   = 0;
 

source/bluetooth/MicroBitPartialFlashingService.cpp

@@ -200,6 +200,11 @@ void MicroBitPartialFlashingService::flashData(uint8_t *data)
 
         packetCount++;
 
+        // Reallocate block
+        if(block == NULL) {
+            (uint32_t*) malloc(16 * sizeof(uint32_t));
+        }
+
         // Add to block
         memcpy(block + (4*blockNum), data + 4, 16);