jordan/rpi4-osdev
1
0
Fork 0
mirror of https://github.com/isometimes/rpi4-osdev synced 2024-11-08 19:30:39 +00:00
Code Issues Projects Releases Packages Wiki Activity

Migrating to clang for native builds on MBP M1 - parts1-6 working, part7 incomplete, part8 untouched

Browse source
This commit is contained in:
Adam Greenwood-Byrne 2021-02-07 19:18:44 +00:00
parent 46b197dbe5
commit 072b5453b4
17 changed files with 267 additions and 283 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
part2-building/Makefile
View file

@ -1,19 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
LLVMPATH = /opt/homebrew/opt/llvm/bin
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
clang --target=aarch64-elf $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
clang --target=aarch64-elf $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot.o $(OFILES) -T link.ld -o kernel8.elf
$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

19
part2-building/Makefile.gcc Normal file
View file

@ -0,0 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

12
part3-helloworld/Makefile
View file

@ -1,19 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
LLVMPATH = /opt/homebrew/opt/llvm/bin
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
clang --target=aarch64-elf $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
clang --target=aarch64-elf $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot.o $(OFILES) -T link.ld -o kernel8.elf
$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

19
part3-helloworld/Makefile.gcc Normal file
View file

@ -0,0 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

12
part4-miniuart/Makefile
View file

@ -1,19 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
LLVMPATH = /opt/homebrew/opt/llvm/bin
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
clang --target=aarch64-elf $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
clang --target=aarch64-elf $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot.o $(OFILES) -T link.ld -o kernel8.elf
$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

19
part4-miniuart/Makefile.gcc Normal file
View file

@ -0,0 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

12
part5-framebuffer/Makefile
View file

@ -1,19 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
LLVMPATH = /opt/homebrew/opt/llvm/bin
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
clang --target=aarch64-elf $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
clang --target=aarch64-elf $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot.o $(OFILES) -T link.ld -o kernel8.elf
$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

19
part5-framebuffer/Makefile.gcc Normal file
View file

@ -0,0 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

12
part6-breakout/Makefile
View file

@ -1,19 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
LLVMPATH = /opt/homebrew/opt/llvm/bin
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
clang --target=aarch64-elf $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
clang --target=aarch64-elf $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot.o $(OFILES) -T link.ld -o kernel8.elf
$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

19
part6-breakout/Makefile.gcc Normal file
View file

@ -0,0 +1,19 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES)
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

4
part6-breakout/io.c
View file

@ -147,8 +147,8 @@ void uart_writeByteBlocking(unsigned char ch) {
void uart_writeText(char *buffer) {
while (*buffer) {
if (*buffer == '\n') uart_writeByteBlocking('\r');
uart_writeByteBlocking(*buffer++);
if (*buffer == '\n') uart_writeByteBlockingActual('\r');
uart_writeByteBlockingActual(*buffer++);
}
}

15
part6-breakout/kernel.c
View file

@ -35,8 +35,10 @@ enum {
OBJ_BALL = 3
};
#define OBJS_ADDRESS 0x02100000 // Somewhere safe to store a lot of data
unsigned int numobjs = 0;
struct Object objects[(ROWS * COLS) + (2 * NUM_LIVES)];
struct Object *objects = (struct Object *)OBJS_ADDRESS;
struct Object *ball;
struct Object *paddle;
@ -149,13 +151,10 @@ void drawScoreboard(int score, int lives)
char tens = score / 10; score -= (10 * tens);
char ones = score;
char string[] = "Score: 0xx Lives: x\0\0";
string[8] = tens + 0x30;
string[9] = ones + 0x30;
string[20] = (char)lives + 0x30;
drawString((WIDTH/2)-252, MARGIN-25, string, 0x0f, 3);
drawString((WIDTH/2)-252, MARGIN-25, "Score: 0 Lives: ", 0x0f, 3);
drawChar(tens + 0x30, (WIDTH/2)-252 + (8*8*3), MARGIN-25, 0x0f, 3);
drawChar(ones + 0x30, (WIDTH/2)-252 + (8*9*3), MARGIN-25, 0x0f, 3);
drawChar((char)lives + 0x30, (WIDTH/2)-252 + (8*20*3), MARGIN-25, 0x0f, 3);
}
void main()

14
part7-bluetooth/Makefile
View file

@ -1,22 +1,22 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
LLVMPATH = /opt/homebrew/opt/llvm/bin
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -mcpu=cortex-a72+nosimd
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
clang --target=aarch64-elf $(GCCFLAGS) -c boot.S -o boot.o
BCM4345C0.o : BCM4345C0.hcd
$(GCCPATH)/aarch64-none-elf-objcopy -I binary -O elf64-littleaarch64 -B aarch64 $< $@
$(LLVMPATH)/llvm-objcopy -I binary -O elf64-littleaarch64 -B aarch64 $< $@
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
clang --target=aarch64-elf $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES) BCM4345C0.o
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) BCM4345C0.o -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
$(LLVMPATH)/ld.lld -m aarch64elf -nostdlib boot.o $(OFILES) BCM4345C0.o -T link.ld -o kernel8.elf
$(LLVMPATH)/llvm-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

22
part7-bluetooth/Makefile.gcc Normal file
View file

@ -0,0 +1,22 @@
CFILES = $(wildcard *.c)
OFILES = $(CFILES:.c=.o)
GCCFLAGS = -Wall -O2 -ffreestanding -nostdinc -nostdlib -nostartfiles
GCCPATH = ../../gcc-arm-9.2-2019.12-x86_64-aarch64-none-elf/bin
all: clean kernel8.img
boot.o: boot.S
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c boot.S -o boot.o
BCM4345C0.o : BCM4345C0.hcd
$(GCCPATH)/aarch64-none-elf-objcopy -I binary -O elf64-littleaarch64 -B aarch64 $< $@
%.o: %.c
$(GCCPATH)/aarch64-none-elf-gcc $(GCCFLAGS) -c $< -o $@
kernel8.img: boot.o $(OFILES) BCM4345C0.o
$(GCCPATH)/aarch64-none-elf-ld -nostdlib -nostartfiles boot.o $(OFILES) BCM4345C0.o -T link.ld -o kernel8.elf
$(GCCPATH)/aarch64-none-elf-objcopy -O binary kernel8.elf kernel8.img
clean:
/bin/rm kernel8.elf *.o *.img > /dev/null 2> /dev/null || true

121
part7-bluetooth/bt.c
View file

@ -1,6 +1,8 @@
#include "io.h"
#include "fb.h"
unsigned char *params = (unsigned char *)SAFE_ADDRESS;
// UART0
enum {
@ -151,11 +153,12 @@ void bt_loadfirmware()
unsigned int size = (long)&_binary_BCM4345C0_hcd_size;
while (c < size) {
unsigned char opcodebytes[] = { _binary_BCM4345C0_hcd_start[c], _binary_BCM4345C0_hcd_start[c+1] };
params[0] = _binary_BCM4345C0_hcd_start[c];
params[1] = _binary_BCM4345C0_hcd_start[c+1];
unsigned char length = _binary_BCM4345C0_hcd_start[c+2];
unsigned char *data = &(_binary_BCM4345C0_hcd_start[c+3]);
if (hciCommandBytes(opcodebytes, data, length)) {
if (hciCommandBytes(params, data, length)) {
uart_writeText("Firmware data load failed\n");
break;
}
@ -167,13 +170,23 @@ void bt_loadfirmware()
void bt_setbaud()
{
static unsigned char params[] = { 0, 0, 0x00, 0xc2, 0x01, 0x00 }; // little endian, 115200
params[0] = 0;
params[1] = 0;
params[2] = 0x00;
params[3] = 0xc2;
params[4] = 0x01;
params[5] = 0x00; // little endian, 115200
if (hciCommand(OGF_VENDOR, COMMAND_SET_BAUD, params, 6)) uart_writeText("bt_setbaud() failed\n");
}
void bt_setbdaddr()
{
static unsigned char params[] = { 0xee, 0xff, 0xc0, 0xee, 0xff, 0xc0 }; // reversed
params[0] = 0xee;
params[1] = 0xff;
params[2] = 0xc0;
params[3] = 0xee;
params[4] = 0xff;
params[5] = 0xc0; // reversed
if (hciCommand(OGF_VENDOR, COMMAND_SET_BDADDR, params, 6)) uart_writeText("bt_setbdaddr() failed\n");
}
@ -213,7 +226,11 @@ void sendACLsubscribe(unsigned int handle)
bt_writeByte(lo(channel));
bt_writeByte(hi(channel));
unsigned char params[] = { 0x12, 0x2b, 0x00, 0x01, 0x00 };
params[0] = 0x12;
params[1] = 0x2b;
params[2] = 0x00;
params[3] = 0x01;
params[4] = 0x00;
unsigned int c=0;
while (c++<data_length) bt_writeByte(params[c-1]);
@ -221,51 +238,74 @@ void sendACLsubscribe(unsigned int handle)
void setLEeventmask(unsigned char mask)
{
unsigned char params[] = { mask, 0, 0, 0, 0, 0, 0, 0 };
params[0] = mask;
params[1] = 0;
params[2] = 0;
params[3] = 0;
params[4] = 0;
params[5] = 0;
params[6] = 0;
params[7] = 0;
if (hciCommand(OGF_LE_CONTROL, 0x01, params, 8)) uart_writeText("setLEeventmask failed\n");
}
void setLEscanenable(unsigned char state, unsigned char duplicates) {
unsigned char params[] = { state, duplicates };
params[0] = state;
params[1] = duplicates;
if (hciCommand(OGF_LE_CONTROL, 0x0c, params, 2)) uart_writeText(" setLEscanenable failed\n");
}
void setLEscanparameters(unsigned char type, unsigned char linterval, unsigned char hinterval, unsigned char lwindow, unsigned char hwindow, unsigned char own_address_type, unsigned char filter_policy) {
unsigned char params[] = { type, linterval, hinterval, lwindow, hwindow, own_address_type, filter_policy };
params[0] = type;
params[1] = linterval;
params[2] = hinterval;
params[3] = lwindow;
params[4] = hwindow;
params[5] = own_address_type;
params[6] = filter_policy;
if (hciCommand(OGF_LE_CONTROL, 0x0b, params, 7)) uart_writeText("setLEscanparameters failed\n");
}
void setLEadvertenable(unsigned char state) {
unsigned char params[] = { state };
uart_writeText("doing the HCIcommand\n");
params[0] = state;
if (hciCommand(OGF_LE_CONTROL, 0x0a, params, 1)) uart_writeText("setLEadvertenable failed\n");
}
void setLEadvertparameters(unsigned char type, unsigned char linterval_min, unsigned char hinterval_min, unsigned char linterval_max, unsigned char hinterval_max, unsigned char own_address_type, unsigned char filter_policy) {
unsigned char params[16] = { linterval_min, hinterval_min, linterval_max, hinterval_max, type, own_address_type, 0, 0, 0, 0, 0, 0, 0, 0x07, filter_policy };
uart_writeText("doing the HCIcommand\n");
params[0] = linterval_min;
params[1] = hinterval_min;
params[2] = linterval_max;
params[3] = hinterval_max;
params[4] = type;
params[5] = own_address_type;
params[6] = 0;
params[7] = 0;
params[8] = 0;
params[9] = 0;
params[10] = 0;
params[11] = 0;
params[12] = 0;
params[13] = 0x07;
params[14] = filter_policy;
if (hciCommand(OGF_LE_CONTROL, 0x06, params, 15)) uart_writeText("setLEadvertparameters failed\n");
}
void setLEadvertdata() {
static unsigned char params[] = { 0x19,
0x02, 0x01, 0x06,
0x03, 0x03, 0xAA, 0xFE,
0x11, 0x16, 0xAA, 0xFE, 0x10, 0x00, 0x03, 0x69, 0x73, 0x6f, 0x6d, 0x65, 0x74, 0x69, 0x6d, 0x2e, 0x65, 0x73,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
params[0] = 0x19;
params[1] = 0x02; params[2] = 0x01; params[3] = 0x06;
params[4] = 0x03; params[5] = 0x03; params[6] = 0xAA; params[7] = 0xFE;
params[8] = 0x11; params[9] = 0x16; params[10] = 0xAA; params[11] = 0xFE; params[12] = 0x10; params[13] = 0x00; params[14] = 0x03;
params[15] = 0x69; params[16] = 0x73; params[17] = 0x6f; params[18] = 0x6d; params[19] = 0x65; params[20] = 0x74; params[21] = 0x69; params[22] = 0x6d;
params[23] = 0x2e; params[24] = 0x65; params[25] = 0x73;
params[26] = 0x00;
params[27] = 0x00;
params[28] = 0x00;
params[29] = 0x00;
params[30] = 0x00;
params[31] = 0x00;
if (hciCommand(OGF_LE_CONTROL, 0x08, params, 32)) uart_writeText("setLEadvertdata failed\n");
}
void createLEconnection(unsigned char a1, unsigned char a2, unsigned char a3, unsigned char a4, unsigned char a5, unsigned char a6, unsigned char linterval, unsigned char hinterval, unsigned char lwindow, unsigned char hwindow, unsigned char own_address_type, unsigned char filter_policy, unsigned char linterval_min, unsigned char hinterval_min, unsigned char linterval_max, unsigned char hinterval_max) {
unsigned char params[26] = { linterval, hinterval, lwindow, hwindow,
filter_policy,
0, a1, a2, a3, a4, a5, a6,
own_address_type,
linterval_min, hinterval_min, linterval_max, hinterval_max,
0, 0, 0x2a, 0x00, 0, 0, 0, 0 };
if (hciCommand(OGF_LE_CONTROL, 0x0d, params, 25)) uart_writeText("createLEconnection failed\n");
}
void stopScanning() {
setLEscanenable(0, 0);
}
@ -315,5 +355,30 @@ void connect(unsigned char *addr)
unsigned int min_interval = connMinFreq / BleGranularity;
unsigned int max_interval = connMaxFreq / BleGranularity;
createLEconnection(addr[5], addr[4], addr[3], addr[2], addr[1], addr[0], lo(p), hi(p), lo(q), hi(q), 0, 0, lo(min_interval), hi(min_interval), lo(max_interval), hi(max_interval));
params[0] = lo(p);
params[1] = hi(p);
params[2] = lo(q);
params[3] = hi(q);
params[4] = 0;
params[5] = 0;
params[6] = addr[5];
params[7] = addr[4];
params[8] = addr[3];
params[9] = addr[2];
params[10] = addr[1];
params[11] = addr[0];
params[12] = 0;
params[13] = lo(min_interval);
params[14] = hi(min_interval);
params[15] = lo(max_interval);
params[16] = hi(max_interval);
params[17] = 0;
params[18] = 0;
params[19] = 0x2a;
params[20] = 0x00;
params[21] = 0;
params[22] = 0;
params[23] = 0;
params[24] = 0;
if (hciCommand(OGF_LE_CONTROL, 0x0d, params, 25)) uart_writeText("createLEconnection failed\n");
}

1
part7-bluetooth/io.h
View file

@ -1,4 +1,5 @@
#define PERIPHERAL_BASE 0xFE000000
#define SAFE_ADDRESS 0x02100000 // Somewhere safe to store a lot of data
void uart_init();
void uart_writeText(char *buffer);

218
part7-bluetooth/kernel.c
View file

@ -1,202 +1,19 @@
#include "io.h"
#include "bt.h"
#define memcmp __builtin_memcmp
#define MAX_MSG_LEN 50
#define MAX_READ_RUN 100
unsigned char data_buf[MAX_MSG_LEN];
unsigned int data_len;
unsigned int messages_received = 0;
unsigned int poll_state = 0;
enum {
LE_EVENT_CODE = 0x3e,
LE_CONNECT_CODE = 0x01,
LE_ADREPORT_CODE = 0x02,
HCI_ACL_PKT = 0x02,
HCI_EVENT_PKT = 0x04
};
unsigned int got_echo_sid = 0;
unsigned int got_echo_name = 0;
unsigned char echo_addr[6];
unsigned int connected = 0;
unsigned int connection_handle = 0;
void hci_poll2(unsigned char byte)
{
switch (poll_state) {
case 0:
if (byte != HCI_EVENT_PKT) poll_state = 0;
else poll_state = 1;
break;
case 1:
if (byte != LE_EVENT_CODE) poll_state = 0;
else poll_state = 2;
break;
case 2:
if (byte > MAX_MSG_LEN) poll_state = 0;
else {
poll_state = 3;
data_len = byte;
}
break;
default:
data_buf[poll_state - 3] = byte;
if (poll_state == data_len + 3 - 1) {
messages_received++;
poll_state = 0;
} else poll_state++;
}
}
unsigned char *hci_poll()
{
unsigned int goal = messages_received + 1;
if (bt_isReadByteReady()) {
unsigned int run = 0;
while (run < MAX_READ_RUN && messages_received < goal && bt_isReadByteReady()) {
unsigned char byte = bt_readByte();
hci_poll2(byte);
run++;
}
if (run == MAX_READ_RUN) return 0;
else return data_buf;
}
return 0;
}
void bt_search()
{
unsigned char *buf;
while ( (buf = hci_poll()) ) {
if (data_len >= 2) {
if (buf[0] == LE_ADREPORT_CODE) {
unsigned char numreports = buf[1];
if (numreports == 1) {
unsigned char event_type = buf[2];
if (event_type == 0x00) {
unsigned char buf_len = buf[10];
unsigned char ad_len = buf[11];
if (ad_len < data_len && buf_len + 11 == data_len - 1) {
for (int c=9;c>=4;c--) echo_addr[9-c] = buf[c];
buf += 11;
got_echo_sid = 0; got_echo_name = 0; // Reset the search state machine
do {
ad_len = buf[0];
unsigned char ad_type = buf[1];
buf += 2;
if (ad_len >= 2) {
if (ad_type == 0x03) {
unsigned int sid=0;
for (int d=0;d<ad_len - 1;d+=2) {
sid = buf[d] | (buf[d+1] << 8);
if (sid == 0xEC00) {
uart_hex(sid); uart_writeText(" ");
got_echo_sid = 1;
}
}
} else if (ad_type == 0x09) {
char remote_name[ad_len - 1];
unsigned int d=0;
while (d<ad_len - 1) {
remote_name[d] = buf[d];
d++;
}
if (!memcmp(remote_name,"echo",4)) {
uart_writeText(remote_name); uart_writeText(" ");
got_echo_name = 1;
}
}
}
buf += ad_len - 1;
} while (buf[1]);
}
}
}
}
}
}
}
void bt_conn()
{
unsigned char *buf;
while ( (buf = hci_poll()) ) {
if (data_len >= 2) {
if (buf[0] == LE_CONNECT_CODE && !connected) {
connected = !buf[1];
uart_hex(connected); uart_writeText(" ");
connection_handle = buf[2] | (buf[3] << 8);
uart_hex(connection_handle); uart_writeText(" ");
}
}
}
}
void acl_poll()
{
while (bt_isReadByteReady()) {
unsigned char byte = bt_readByte();
if (byte == HCI_EVENT_PKT) {
unsigned char opcode = bt_waitReadByte();
unsigned char length = bt_waitReadByte();
for (int i=0;i<length;i++) bt_waitReadByte();
} else if (byte == HCI_ACL_PKT) {
unsigned char h1 = bt_waitReadByte();
unsigned char h2 = bt_waitReadByte();
unsigned int handle = h1 | (h2 & 0x0f);
unsigned char flags = (h2 & 0xf0) >> 4;
h1 = bt_waitReadByte();
h2 = bt_waitReadByte();
unsigned int length = h1 | (h2 << 8);
unsigned char data[length];
for (int i=0;i<length;i++) data[i] = bt_waitReadByte();
length = data[0] | (data[1] << 8);
unsigned int channel = data[2] | (data[3] << 8);
unsigned char opcode = data[4];
if (opcode == 0x1b) {
unsigned int from_handle = data[5] | (data[6] << 8);
for (int c=0;c<length-3;c++) uart_byte(data[7+c]);
uart_writeText("\n");
}
}
}
}
void main()
{
uart_init();
bt_init();
uart_writeText("Initialising Bluetooth: ");
uart_writeText(">> reset: ");
bt_reset();
uart_writeText(">> firmware load: ");
bt_loadfirmware();
uart_writeText(">> set baud: ");
bt_setbaud();
uart_writeText(">> set bdaddr: ");
bt_setbdaddr();
// Print the BD_ADDR
@ -205,30 +22,15 @@ void main()
for (int c=5;c>=0;c--) uart_byte(local_addr[c]);
uart_writeText("\n");
// Start scanning for echo
// Start advertising
uart_writeText("Setting event mask... ");
setLEeventmask(0xff);
startActiveScanning();
uart_writeText("Waiting for echo: ");
while (!(got_echo_sid && got_echo_name)) bt_search();
stopScanning();
for (int c=0;c<=5;c++) uart_byte(echo_addr[c]);
uart_writeText("\n");
uart_writeText("Starting advertsing... ");
startActiveAdvertising();
// Ask to connect to the echo
uart_writeText("Connecting to echo: ");
connect(echo_addr);
while (!connected) bt_conn();
uart_writeText("\n");
// Get the characteristic value
uart_writeText("Sending read request: ");
uart_hex(connection_handle); uart_writeText("\n");
sendACLsubscribe(connection_handle);
// Into the main infinite loop
uart_writeText("Waiting for input...\n");
// Enter an infinite loop
uart_writeText("Going loopy...");
while (1) {
acl_poll();
uart_update();
}
}