int read_message() {
DWORD rread;
const struct ble_msg *apimsg;
struct ble_header apihdr;
unsigned char data[256]; //enough for BLE
/* read header */
if (!ReadFile(serial_handle, (unsigned char*) &apihdr, 4, &rread, NULL )) {
return GetLastError();
}
if (!rread)
return 0;
/* read rest if needed */
if (apihdr.lolen) {
if (!ReadFile(serial_handle, data, apihdr.lolen, &rread, NULL )) {
return GetLastError();
}
}
apimsg = ble_get_msg_hdr(apihdr);
if (!apimsg) {
printf("ERROR: Message not found:%d:%d\n", (int) apihdr.cls,
(int) apihdr.command);
return -1;
}
apimsg->handler(data);
return 0;
}
//*****************************************************************************
//
// input event, response via BGLib
//
//*****************************************************************************
void input() {
uint8_t data[256]; //enough for BGLib
const struct ble_msg *apimsg;
struct ble_header apihdr;
UART4Receive((uint8_t*) &apihdr, 4);
//UARTprintf("%d %d %d %d\n", (int)(apihdr.type_hilen), (int)(apihdr.lolen), (int)(apihdr.cls), (int)(apihdr.command));
if (apihdr.lolen) {
UART4Receive(data, apihdr.lolen);
}
apimsg = ble_get_msg_hdr(apihdr); //Error: sometimes apimsg hdr is wrong
apimsg->handler(data);
}
// read and parse message from usb dongle over uart
void *read_message()
{
fprintf(stderr,"reading thread started\n");
unsigned char data[256]; // enough for BLE
struct ble_header hdr;
int r;
while (state != state_finish) {
r = uart_rx(sizeof(hdr), (unsigned char *)&hdr, UART_TIMEOUT);
if (!r) {
//printf("ERROR: UART timeout. Error code:%d\n", r);
continue; // return NULL; // timeout
} else if (r < 0) {
fprintf(stderr,"ERROR: Reading header failed. Error code:%d\n", r);
pthread_exit(NULL);
}
if (hdr.lolen) {
r = uart_rx(hdr.lolen, data, UART_TIMEOUT);
if (r <= 0) {
fprintf(stderr,"ERROR: Reading data failed. Error code:%d\n", r);
pthread_exit(NULL);
}
}
const struct ble_msg *msg = ble_get_msg_hdr(hdr);
#ifdef DEBUG
print_raw_packet(&hdr, data);
#endif
if (!msg) {
fprintf(stderr,"ERROR: Unknown message received\n");
pthread_exit(NULL);
}
msg->handler(data);
//usleep(500);
}
pthread_exit(NULL);
//return 0;
}
int read_message(int timeout_ms)
{
unsigned char data[256]; // enough for BLE
struct ble_header hdr;
int r;
r = uart_rx(sizeof(hdr), (unsigned char *)&hdr, UART_TIMEOUT);
if (!r)
{
return -1; // timeout
}
else if (r < 0)
{
printf("ERROR: Reading header failed. Error code: %d\n", r);
return 1;
}
if (hdr.lolen)
{
r = uart_rx(hdr.lolen, data, UART_TIMEOUT);
if (r <= 0)
{
printf("ERROR: Reading data failed. Error code: %d\n", r);
return 1;
}
}
const struct ble_msg *msg = ble_get_msg_hdr(hdr);
#ifdef DEBUG
print_raw_packet(&hdr, data);
#endif
if (!msg)
{
printf("ERROR: Unknown message received\n");
exit(1);
}
msg->handler(data);
return 0;
}
/**
* Receive BGAPI packet using UART interface
*
* @param timeout_ms Milliseconds to wait before timing out on the UART RX operation
*/
int read_api_packet(int timeout_ms)
{
unsigned char data[256]; // enough for BLE
struct ble_header hdr;
int r;
r = uart_rx(sizeof(hdr), (unsigned char *)&hdr, timeout_ms);
if (!r) {
return -1; // timeout
} else if (r < 0) {
printf("ERROR: Reading header failed. Error code:%d\n", r);
return 1;
}
if (hdr.lolen) {
r = uart_rx(hdr.lolen, data, timeout_ms);
if (r <= 0) {
printf("ERROR: Reading data failed. Error code:%d\n", r);
return 1;
}
}
// use BGLib function to create correct ble_msg structure based on the header
// (header contains command class/ID info, used to identify the right structure to apply)
const struct ble_msg *msg = ble_get_msg_hdr(hdr);
#ifdef DEBUG
// display incoming BGAPI packet
print_raw_packet(&hdr, data);
#endif
if (!msg) {
printf("ERROR: Unknown message received\n");
exit(1);
}
// call the appropriate handler function with any payload data
// (this is what triggers the ble_evt_* and ble_rsp_* functions)
msg -> handler(data);
return 0;
}