mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-11-09 20:00:40 +00:00
393 lines
11 KiB
C
393 lines
11 KiB
C
#include "io.h"
|
|
#include "fb.h"
|
|
|
|
unsigned char *params = (unsigned char *)SAFE_ADDRESS;
|
|
|
|
// UART0
|
|
|
|
enum {
|
|
ARM_UART0_BASE = PERIPHERAL_BASE + 0x201000,
|
|
ARM_UART0_DR = ARM_UART0_BASE + 0x00,
|
|
ARM_UART0_FR = ARM_UART0_BASE + 0x18,
|
|
ARM_UART0_IBRD = ARM_UART0_BASE + 0x24,
|
|
ARM_UART0_FBRD = ARM_UART0_BASE + 0x28,
|
|
ARM_UART0_LCRH = ARM_UART0_BASE + 0x2C,
|
|
ARM_UART0_CR = ARM_UART0_BASE + 0x30,
|
|
ARM_UART0_IFLS = ARM_UART0_BASE + 0x34,
|
|
ARM_UART0_IMSC = ARM_UART0_BASE + 0x38,
|
|
ARM_UART0_RIS = ARM_UART0_BASE + 0x3C,
|
|
ARM_UART0_MIS = ARM_UART0_BASE + 0x40,
|
|
ARM_UART0_ICR = ARM_UART0_BASE + 0x44
|
|
};
|
|
|
|
unsigned char lo(unsigned int val) { return (unsigned char)(val & 0xff); }
|
|
unsigned char hi(unsigned int val) { return (unsigned char)((val & 0xff00) >> 8); }
|
|
|
|
unsigned int bt_isReadByteReady() { return (!(mmio_read(ARM_UART0_FR) & 0x10)); }
|
|
|
|
unsigned char bt_readByte()
|
|
{
|
|
unsigned char ch = lo(mmio_read(ARM_UART0_DR));
|
|
return ch;
|
|
}
|
|
|
|
unsigned char bt_waitReadByte()
|
|
{
|
|
while (!bt_isReadByteReady());
|
|
return bt_readByte();
|
|
}
|
|
|
|
void bt_writeByte(char byte)
|
|
{
|
|
while ((mmio_read(ARM_UART0_FR) & 0x20) != 0);
|
|
mmio_write(ARM_UART0_DR, (unsigned int)byte);
|
|
}
|
|
|
|
void bt_flushrx()
|
|
{
|
|
while (bt_isReadByteReady()) bt_readByte();
|
|
}
|
|
|
|
void bt_init()
|
|
{
|
|
gpio_useAsAlt3(30);
|
|
gpio_useAsAlt3(31);
|
|
gpio_useAsAlt3(32);
|
|
gpio_useAsAlt3(33);
|
|
|
|
bt_flushrx();
|
|
|
|
mmio_write(ARM_UART0_IMSC, 0x00);
|
|
mmio_write(ARM_UART0_ICR, 0x7ff);
|
|
mmio_write(ARM_UART0_IBRD, 0x1a);
|
|
mmio_write(ARM_UART0_FBRD, 0x03);
|
|
mmio_write(ARM_UART0_IFLS, 0x08);
|
|
mmio_write(ARM_UART0_LCRH, 0x70);
|
|
mmio_write(ARM_UART0_CR, 0xB01);
|
|
mmio_write(ARM_UART0_IMSC, 0x430);
|
|
|
|
wait_msec(0x100000);
|
|
}
|
|
|
|
// HOST SETUP
|
|
|
|
enum {
|
|
OGF_HOST_CONTROL = 0x03,
|
|
OGF_LE_CONTROL = 0x08,
|
|
OGF_VENDOR = 0x3f,
|
|
|
|
COMMAND_SET_BDADDR = 0x01,
|
|
COMMAND_RESET_CHIP = 0x03,
|
|
COMMAND_SET_BAUD = 0x18,
|
|
COMMAND_LOAD_FIRMWARE = 0x2e,
|
|
|
|
HCI_COMMAND_PKT = 0x01,
|
|
HCI_ACL_PKT = 0x02,
|
|
HCI_EVENT_PKT = 0x04,
|
|
COMMAND_COMPLETE_CODE = 0x0e,
|
|
CONNECT_COMPLETE_CODE = 0x0f,
|
|
|
|
LL_SCAN_ACTIVE = 0x01,
|
|
LL_ADV_NONCONN_IND = 0x03
|
|
};
|
|
|
|
unsigned char empty[] = {};
|
|
|
|
int hciCommandBytes(unsigned char *opcodebytes, unsigned char *data, unsigned char length)
|
|
{
|
|
unsigned char c=0;
|
|
|
|
bt_writeByte(HCI_COMMAND_PKT);
|
|
bt_writeByte(opcodebytes[0]);
|
|
bt_writeByte(opcodebytes[1]);
|
|
bt_writeByte(length);
|
|
|
|
while (c++<length) bt_writeByte(*data++);
|
|
|
|
if (bt_waitReadByte() != HCI_EVENT_PKT) return 1;
|
|
|
|
unsigned char code = bt_waitReadByte();
|
|
if (code == CONNECT_COMPLETE_CODE) {
|
|
if (bt_waitReadByte() != 4) return 2;
|
|
|
|
unsigned char err = bt_waitReadByte();
|
|
if (err != 0) {
|
|
uart_writeText("Saw HCI COMMAND STATUS error "); uart_hex(err); uart_writeText("\n");
|
|
return 12;
|
|
}
|
|
|
|
if (bt_waitReadByte() == 0) return 3;
|
|
if (bt_waitReadByte() != opcodebytes[0]) return 4;
|
|
if (bt_waitReadByte() != opcodebytes[1]) return 5;
|
|
} else if (code == COMMAND_COMPLETE_CODE) {
|
|
if (bt_waitReadByte() != 4) return 6;
|
|
if (bt_waitReadByte() == 0) return 7;
|
|
if (bt_waitReadByte() != opcodebytes[0]) return 8;
|
|
if (bt_waitReadByte() != opcodebytes[1]) return 9;
|
|
if (bt_waitReadByte() != 0) return 10;
|
|
} else return 11;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int hciCommand(unsigned short ogf, unsigned short ocf, unsigned char *data, unsigned char length)
|
|
{
|
|
unsigned short opcode = ogf << 10 | ocf;
|
|
unsigned char opcodebytes[2] = { lo(opcode), hi(opcode) };
|
|
|
|
return hciCommandBytes(opcodebytes, data, length);
|
|
}
|
|
|
|
void bt_reset() {
|
|
if (hciCommand(OGF_HOST_CONTROL, COMMAND_RESET_CHIP, empty, 0)) uart_writeText("bt_reset() failed\n");
|
|
}
|
|
|
|
void bt_loadfirmware()
|
|
{
|
|
if (hciCommand(OGF_VENDOR, COMMAND_LOAD_FIRMWARE, empty, 0)) uart_writeText("loadFirmware() failed\n");
|
|
|
|
extern unsigned char _binary_BCM4345C0_hcd_start[];
|
|
extern unsigned char _binary_BCM4345C0_hcd_size[];
|
|
|
|
unsigned int c=0;
|
|
unsigned int size = (long)&_binary_BCM4345C0_hcd_size;
|
|
|
|
while (c < size) {
|
|
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(params, data, length)) {
|
|
uart_writeText("Firmware data load failed\n");
|
|
break;
|
|
}
|
|
c += 3 + length;
|
|
}
|
|
|
|
wait_msec(0x100000);
|
|
}
|
|
|
|
void bt_setbaud()
|
|
{
|
|
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()
|
|
{
|
|
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");
|
|
}
|
|
|
|
void bt_getbdaddr(unsigned char *bdaddr) {
|
|
bt_writeByte(HCI_COMMAND_PKT);
|
|
bt_writeByte(0x09);
|
|
bt_writeByte(0x10);
|
|
bt_writeByte(0x00);
|
|
|
|
if (bt_waitReadByte() != HCI_EVENT_PKT) return;
|
|
if (bt_waitReadByte() != COMMAND_COMPLETE_CODE) return;
|
|
if (bt_waitReadByte() != 0x0a) return;
|
|
if (bt_waitReadByte() != 1) return;
|
|
if (bt_waitReadByte() != 0x09) return;
|
|
if (bt_waitReadByte() != 0x10) return;
|
|
if (bt_waitReadByte() != 0x00) return;
|
|
|
|
for (int c=0;c<6;c++) bdaddr[c] = bt_waitReadByte();
|
|
}
|
|
|
|
void sendACLsubscribe(unsigned int handle)
|
|
{
|
|
bt_writeByte(HCI_ACL_PKT);
|
|
|
|
bt_writeByte(lo(handle));
|
|
bt_writeByte(hi(handle));
|
|
|
|
unsigned int length = 0x0009;
|
|
bt_writeByte(lo(length));
|
|
bt_writeByte(hi(length));
|
|
|
|
unsigned int data_length = 0x0005;
|
|
bt_writeByte(lo(data_length));
|
|
bt_writeByte(hi(data_length));
|
|
|
|
unsigned int channel = 0x0004;
|
|
bt_writeByte(lo(channel));
|
|
bt_writeByte(hi(channel));
|
|
|
|
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]);
|
|
}
|
|
|
|
void setLEeventmask(unsigned char mask)
|
|
{
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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) {
|
|
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() {
|
|
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 stopScanning() {
|
|
setLEscanenable(0, 0);
|
|
}
|
|
|
|
void stopAdvertising() {
|
|
setLEadvertenable(0);
|
|
}
|
|
|
|
void startActiveScanning() {
|
|
float BleScanInterval = 60; // every 60ms
|
|
float BleScanWindow = 60;
|
|
float BleScanDivisor = 0.625;
|
|
|
|
unsigned int p = BleScanInterval / BleScanDivisor;
|
|
unsigned int q = BleScanWindow / BleScanDivisor;
|
|
|
|
setLEscanparameters(LL_SCAN_ACTIVE, lo(p), hi(p), lo(q), hi(q), 0, 0);
|
|
setLEscanenable(1, 0);
|
|
}
|
|
|
|
void startActiveAdvertising() {
|
|
float advertMinFreq = 100; // every 100ms
|
|
float advertMaxFreq = 100; // every 100ms
|
|
float bleGranularity = 0.625;
|
|
|
|
unsigned int min_interval = advertMinFreq / bleGranularity;
|
|
unsigned int max_interval = advertMaxFreq / bleGranularity;
|
|
|
|
setLEadvertparameters(LL_ADV_NONCONN_IND, lo(min_interval), hi(min_interval), lo(max_interval), hi(max_interval), 0, 0);
|
|
setLEadvertdata();
|
|
setLEadvertenable(1);
|
|
}
|
|
|
|
void connect(unsigned char *addr)
|
|
{
|
|
float BleScanInterval = 60; // every 60ms
|
|
float BleScanWindow = 60;
|
|
float BleScanDivisor = 0.625;
|
|
|
|
float connMinFreq = 30; // every 30ms
|
|
float connMaxFreq = 50; // every 50ms
|
|
float BleGranularity = 1.25;
|
|
|
|
unsigned int p = BleScanInterval / BleScanDivisor;
|
|
unsigned char lp = lo(p);
|
|
unsigned char hp = hi(p);
|
|
unsigned int q = BleScanWindow / BleScanDivisor;
|
|
unsigned char lq = lo(q);
|
|
unsigned char hq = hi(q);
|
|
|
|
unsigned int min_interval = connMinFreq / BleGranularity;
|
|
unsigned char lmini = lo(min_interval);
|
|
unsigned char hmini = hi(min_interval);
|
|
unsigned int max_interval = connMaxFreq / BleGranularity;
|
|
unsigned char lmaxi = lo(max_interval);
|
|
unsigned char hmaxi = hi(max_interval);
|
|
|
|
params[0] = lp;
|
|
params[1] = hp;
|
|
params[2] = lq;
|
|
params[3] = hq;
|
|
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] = lmini;
|
|
params[14] = hmini;
|
|
params[15] = lmaxi;
|
|
params[16] = hmaxi;
|
|
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");
|
|
}
|