Subject:
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Re: Problem to send long messages from RCX to PC via com Hack
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sun, 29 Jun 2008 06:41:37 GMT
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Viewed:
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25061 times
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In lugnet.robotics.rcx.legos, Matthew Sheets wrote:
> I don't know if this is would be of any help, as it uses a different
> approach, but I thought I'd pass it along anyway....
>
> Bi-directional Bluetooth to IR translator -
> http://www.robotics.sk/maine.php?page=/projects/rcxbt/
> (PDF format: http://www.robotics.sk/projects/rcxbt/rcxbt.pdf )
>
> While this solution doesn't allow both the serial and IR to be active like
> the method that has been discussed, the Bluetooth adapter communication can
> be throttled back to "2400-odd-1" (see PDF page 7). Might this
> communication configuration capability alleviate any of the present issues,
> or has the communication speed limitation related to the other Bluetooth
> adapter been overcome?
>
>
> Thanks,
> Matthew
Dear Matthew
I have found the problem. It was in kernel\lnp-locical.c
-> cheking the echo was the problem
solution: echo OFF
it is a rough solution, but it works
changes
1) rx_handler(void)
...
// echos of own bytes -> collision detection
//
// S_RDR //! serial receive data register
// !< tx_verify: ptr to next byte to verify
if(S_RDR!=*tx_verify) {
// //powo change we have no collision OK rs232 BT bf_flag=1;
if (bt_flag == 0) { // pow 0 infrared return with collision 1=comport bt
txend_handler(); // shutdown transmit and irqs, clear status flags
//tx_state=TX_COLL; //(-1) /!< not transmitting, last xmit was collision
tx_state=TX_COLL;
// if (bt_flag == 1) tx_state = TX_MIST; // pow error TX_COLL (-1)
}
and
-> echo OFF in function
2)
void reset_powo(void){
txend_handler();
tx_state=TX_RESET; //TX_RESET (-5)
}
static void rxerror_handler(void) {
..
time_t new_tx;
if(tx_state<TX_ACTIVE) {
//lnp_integrity_reset(); // pow geändert kein txend_handler();
reset_powo(); // //powo change we have no collision OK
new_tx = get_system_up_time()+lnp_byte_safe;
if (new_tx > allow_tx) allow_tx = new_tx;
} else {
txend_handler(); //
//tx_state=TX_COLL; //(-1)
tx_state=TX_ERROR; // (-2) // 1) TX_COLL_LNP_RESET (-4) //!<
lnp_integrity_reset
}
and in include\lnp\sys\lnp-logical.h
////#define POWO B2400
extern unsigned char test_bt_flag (void);
extern unsigned char bt_flag; // pow if 0 then infrared 1 bt oder com
extern unsigned char empfangs_byte ;
extern unsigned short lnp_logical_baud_rate;
extern unsigned short lnp_logical_parity;
extern unsigned short lnp_byte_safe;
extern unsigned short lnp_wait_txok;
extern unsigned short lnp_wait_coll;
the brick program
... snip
void baud4800() {
unsigned short lnp_byte_time = MSECS_TO_TICKS(3); //!< 4800 baud
unsigned short lnp_byte_timeout = (3*lnp_byte_time/2); //!< timeout waiting for a byte 4,5 ms
unsigned short lnp_byte_safe_temp = (4*lnp_byte_time); //!< delay before transmitting a byte 12
unsigned short lnp_wait_txok_temp = (2*lnp_byte_timeout); //!< delay after good transmit 9
unsigned short lnp_wait_coll_temp = (4*lnp_byte_timeout); //!< delay after collision 18
lnp_logical_baud_rate = B4800;
lnp_logical_parity = SMR_P_NONE;
lnp_byte_safe = lnp_byte_safe_temp;
lnp_wait_txok = lnp_wait_txok_temp;
lnp_wait_coll = lnp_wait_coll_temp;
}
...
void infrared_on() {
//! enable IR carrier frequency.
//extern inline void carrier_init(void) { }
T1_CR =0x9;
T1_CSR =0x13;
T1_CORA=0x1a;
}
void infrared_off() {
//! disable IR carrier frequency. // carrier_shutdown();
//extern inline void carrier_shutdown(void)
T1_CR =0;
T1_CSR =0;
}
int main ( int argc, char **argv ) {
....
lnp_logical_shutdown(); sleep(1);
baud4800();
lnp_logical_init();
infrared_off();
bt_flag=1; //NO echo tx ok
..
best regards Bernhard
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