void bt_init( void )
{
uint8_t num_baudrates = sizeof(baudrates)/sizeof(uint32_t);
uint8_t i = 0;
int16_t received;
/* first set BT module AT mode pin */
io_on( HC05_CMD_PORT, HC05_CMD_PIN);
/* now wait 100ms */
delay(100);
/* iterate through baudrates */
do
{
usart_config_baudrate( baudrates[i]);
usart_flush();
/* send AT command */
usart_transmit( (uint8_t *)BTCMD_AT, BTCMD_AT_LEN);
/* wait for response */
received = usart_receive( response_buffer, 4, RESPONSE_TIMEOUT);
/* we found a valid answer */
if( received > 0)
{
break;
}
i++;
}while(i < num_baudrates);
if( i > 0)
{
/* module seems to be configured for default -> reprogram */
usart_transmit( (uint8_t *)BTCMD_SET_NAME, BTCMD_SET_NAME_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
/* module seems to be configured for default -> reprogram */
usart_transmit( (uint8_t *)BTCMD_SET_PW, BTCMD_SET_PW_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
/* module seems to be configured for default -> reprogram */
usart_transmit( (uint8_t *)BTCMD_SET_BAUD, BTCMD_SET_BAUD_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
}
/* send reset */
usart_transmit( (uint8_t *)BTCMD_RESET, BTCMD_RESET_LEN);
received = usart_receive( response_buffer, RESPONSE_LENGTH, RESPONSE_TIMEOUT);
/* leave AT mode */
io_off( HC05_CMD_PORT, HC05_CMD_PIN);
/* wait a bit */
delay( 100);
usart_config_baudrate( baudrates[0]);
usart_flush();
bt_ready = 1;
}
/* Get character from stream */
int uart_getchar(FILE *stream) {
char data = usart_receive(); // Temporarily store the received data
if(data == '\r') {
data = '\n'; // Convert for terminal to understand
}
// stream_printf(data, stream); // Send to console what has been received, so we can see when typing
return data;
}
int8_t debug_process(const message_t *msg)
{
int8_t msg_recognized = 1;
switch (msg->cmd) {
default:
msg_recognized = 0;
break;
}
if (usart_rx_ischar()) {
unsigned char ch = usart_receive();
switch (ch) {
case 'v': {
message_t *nmsg = loop_put_msg_begin();
nmsg->cmd = Cmd_SayTime;
nmsg->arg1p = &gv_clock_main; // WARN: discards volatile
loop_put_msg_end(nmsg);
break;
}
#define SBUF_SIZE (2*SNDBUF_SIZE)
case 'O': {
char *sbuf = (char*)g_sound_buf;
usart_sendstr_P(PSTR(" / file open: Enter abs. file name = "));
usart_getline(sbuf, SBUF_SIZE);
usart_sendstr_P(PSTR("\nFile name: '"));
usart_sendstr(sbuf);
usart_sendstr_P(PSTR("'\n"));
message_t *nmsg = loop_put_msg_begin();
nmsg->cmd = Cmd_PlayFileName;
nmsg->arg1p = sbuf;
loop_put_msg_end(nmsg);
break;
}
default: {
usart_sendstr_P(PSTR("\nCmd? "));
break;
}
}
}
return msg_recognized;
}
