btstack/src/hci.c

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/*
* hci.c
*
* Created by Matthias Ringwald on 4/29/09.
*
*/
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#include <unistd.h>
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#include <stdarg.h>
#include <string.h>
#include <stdio.h>
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#include "hci.h"
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hci_cmd_t hci_inquiry = {
0x01, 0x01, "311" // LAP, Inquiry length, Num_responses
};
hci_cmd_t hci_reset = {
0x03, 0x03, ""
};
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static hci_transport_t *hci_transport;
void hexdump(uint8_t *data, int size){
int i;
for (i=0; i<size;i++){
printf("%02X ", data[i]);
}
printf("\n");
}
#if 0
static void *hci_daemon_thread(void *arg){
printf("HCI Daemon started\n");
hci_run(transport, &config);
return NULL;
}
#endif
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void hci_init(hci_transport_t *transport, void *config){
// reference to use transport layer implementation
hci_transport = transport;
// open unix socket
// wait for connections
// enter loop
// handle events
}
int hci_power_control(HCI_POWER_MODE power_mode){
return 0;
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}
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int hci_send_cmd_packet(uint8_t *buffer, int size){
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return hci_transport->send_cmd_packet(buffer, size);
}
void hci_run(){
while (1) {
// construct file descriptor set to wait for
// select
// for each ready file in FD - call handle_data
sleep(1);
}
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}
void hci_create_cmd_packet(uint8_t *buffer, uint8_t *cmd_len, hci_cmd_t *cmd, ...){
buffer[0] = cmd->ocf;
buffer[1] = cmd->ocf >> 8 | cmd->ogf << 2;
int pos = 3;
va_list argptr;
va_start(argptr, cmd);
const char *format = cmd->format;
uint16_t word;
uint32_t longword;
uint8_t * bt_addr;
while (*format) {
switch(*format) {
case '1': // 8 bit value
case '2': // 16 bit value
case 'H': // hci_handle
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word = va_arg(argptr, int); // minimal va_arg is int: 2 bytes on 8+16 bit CPUs
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buffer[pos++] = word & 0xff;
if (*format == '2') {
buffer[pos++] = word >> 8;
} else if (*format == 'H') {
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// TODO
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}
break;
case '3':
case '4':
longword = va_arg(argptr, uint32_t);
// longword = va_arg(argptr, int);
buffer[pos++] = longword;
buffer[pos++] = longword >> 8;
buffer[pos++] = longword >> 16;
if (*format == '4'){
buffer[pos++] = longword >> 24;
}
break;
case 'B': // bt-addr
bt_addr = va_arg(argptr, uint8_t *);
memcpy( &buffer[pos], bt_addr, 6);
pos += 6;
break;
default:
break;
}
format++;
};
va_end(argptr);
buffer[2] = pos - 3;
*cmd_len = pos;
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}