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Tested part7 with -O2 optimisation in Makefile

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Adam Greenwood-Byrne 2021-02-12 12:45:11 +00:00
parent 7e3238758a
commit d5b64f4c8d
2 changed files with 4 additions and 4 deletions
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2
part7-bluetooth/Makefile
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@ -1,7 +1,7 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
LLVMPATH = /opt/homebrew/opt/llvm/bin
GCCFLAGS = -Wall -O0 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
all: clean kernel8.img

6
part7-bluetooth/bt.c
View file

@ -1,7 +1,7 @@
#include "io.h"
#include "fb.h"
unsigned char *params = (unsigned char *)SAFE_ADDRESS;
volatile unsigned char *params = (unsigned char *)SAFE_ADDRESS;
// UART0
@ -93,7 +93,7 @@ enum {
unsigned char empty[] = {};
int hciCommandBytes(unsigned char *opcodebytes, unsigned char *data, unsigned char length)
int hciCommandBytes(volatile unsigned char *opcodebytes, volatile unsigned char *data, unsigned char length)
{
unsigned char c=0;
@ -130,7 +130,7 @@ int hciCommandBytes(unsigned char *opcodebytes, unsigned char *data, unsigned ch
return 0;
}
int hciCommand(unsigned short ogf, unsigned short ocf, unsigned char *data, unsigned char length)
int hciCommand(unsigned short ogf, unsigned short ocf, volatile unsigned char *data, unsigned char length)
{
unsigned short opcode = ogf << 10 | ocf;
unsigned char opcodebytes[2] = { lo(opcode), hi(opcode) };