allocate large swathes of memory to camera

this is for higher resolution QR code scanning

makes it incompatible with simultaneous USB usage

however, when camera is off, the USB stack can be started, and
vice-versa. Basically, you can't both do active USB and camera
at the same time, but you can do one or the other.

libs/cramium-hal/src/board/baosec.rs

@@ -26,20 +26,21 @@ pub const SPIM_FLASH_IFRAM_ADDR: usize = utralib::HW_IFRAM0_MEM + utralib::HW_IF
 // one page for the I2C driver
 pub const I2C_IFRAM_ADDR: usize = utralib::HW_IFRAM0_MEM + utralib::HW_IFRAM0_MEM_LEN - 8 * 4096;
 
-// memory for camera driver
-pub const CAM_IFRAM_LEN_PAGES: usize = 10;
+// memory for camera driver - note this is mutually exclusive with USB, can't use both at the same time
+pub const CAM_IFRAM_LEN_PAGES: usize = 30;
 pub const CAM_IFRAM_ADDR: usize =
-    utralib::HW_IFRAM0_MEM + utralib::HW_IFRAM0_MEM_LEN - (9 + CAM_IFRAM_LEN_PAGES) * 4096;
+    utralib::HW_IFRAM1_MEM + utralib::HW_IFRAM1_MEM_LEN - CAM_IFRAM_LEN_PAGES * 4096;
 
-// USB pages - USB subsystem is a hog, needs a lot of pages
-pub const CRG_IFRAM_PAGES: usize = 22;
+// USB pages - USB subsystem is a hog, needs a lot of pages, note this is mutually exclusive with camera,
+// can't use both at once
+pub const CRG_IFRAM_PAGES: usize = 23; // +1 for extended application buffer by 4k
 pub const CRG_UDC_MEMBASE: usize =
     utralib::HW_IFRAM1_MEM + utralib::HW_IFRAM1_MEM_LEN - CRG_IFRAM_PAGES * 0x1000;
 
 // MANUALLY SYNCED TO ALLOCATIONS ABOVE
 // inclusive numbering - we allocate pages from the top-down, so the last number should generally be 31
-pub const IFRAM0_RESERVED_PAGE_RANGE: [usize; 2] = [31 - (9 + CAM_IFRAM_LEN_PAGES), 31];
-pub const IFRAM1_RESERVED_PAGE_RANGE: [usize; 2] = [31 - CRG_IFRAM_PAGES, 31];
+pub const IFRAM0_RESERVED_PAGE_RANGE: [usize; 2] = [31 - 9, 31];
+pub const IFRAM1_RESERVED_PAGE_RANGE: [usize; 2] = [31 - CAM_IFRAM_LEN_PAGES, 31];
 
 /// Setup pins for the baosec display
 /// Returns a spi channel object and descriptor for the C/D + CS pins as a (port, c/d pin, cs pin) tuple