borgware-2d/can/borg_can.c

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#include "can.h"
#include "lap.h"
#include "borg_can.h"
#include "spi.h"
#include "../borg_hw/borg_hw.h"
#include <setjmp.h>
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#ifdef __AVR__
# include <avr/pgmspace.h>
# include <avr/interrupt.h>
# include <avr/eeprom.h>
#else
# include "../compat/eeprom.h"
#endif
#include <string.h>
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can_addr_t myaddr;
extern jmp_buf newmode_jmpbuf;
#ifdef LAP_TIME_EXTENSION
//variables to save the last received hours and minutes
//(accessible via lap.h)
uint8_t lap_time_h, lap_time_m, lap_time_update = 0;
#endif
void bcan_init()
{
spi_init();
can_init();
myaddr = eeprom_read_byte(0x00);
pdo_message *msg = (pdo_message *)can_buffer_get();
msg->addr_src = myaddr;
msg->addr_dst = 0xff;
msg->port_src = PORT_BORG;
msg->port_dst = PORT_BORG;
msg->dlc = 4;
msg->cmd = FKT_BORG_INFO;
msg->data[0] = NUM_ROWS;
msg->data[1] = NUM_COLS;
msg->data[2] = NUMPLANE;
can_transmit((can_message *)msg);
}
void process_mgt_msg(pdo_message *msg)
{
pdo_message *rmsg;
switch(msg->cmd) {
case FKT_MGT_RESET:
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#ifdef __AVR__
timer0_off();
cli();
while(1);
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#endif
break;
case FKT_MGT_PING:
rmsg = (pdo_message *)can_buffer_get();
rmsg->addr_dst = msg->addr_src;
rmsg->addr_src = myaddr;
rmsg->port_dst = msg->port_src;
rmsg->port_src = msg->port_dst;
rmsg->cmd = FKT_MGT_PONG;
rmsg->dlc = 1;
can_transmit((can_message *)rmsg);
break;
#ifdef LAP_TIME_EXTENSION
//if we get a time reply, save it
case FKT_MGT_TIMEREPLY:
lap_time_h = msg->data[0];
lap_time_m = msg->data[1];
lap_time_update = 1;
break;
#endif
}
}
void process_borg_msg(pdo_message *msg)
{
unsigned char i, j;
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switch (msg->cmd) {
case FKT_BORG_MODE:
longjmp(newmode_jmpbuf, msg->data[0]);
break;
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case FKT_BORG_SCROLLTEXT_RESET:
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for (i = 0; i < msg->dlc - 1; i++) {
scrolltext_text[i] = (char)msg->data[i];
}
scrolltext_text[i] = 0;
break;
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case FKT_BORG_SCROLLTEXT_APPEND:
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j = 0;
while (scrolltext_text[j])
j++;
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for (i = 0; i < msg->dlc - 1; i++) {
scrolltext_text[i + j] = (char)msg->data[i];
}
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scrolltext_text[i + j] = 0;
break;
#ifdef Hansi_hat_gelernt_Werte_vorher_zu_definieren
//========== blinkenstuff
//clear the blinkenbackbuffer to color
case FKT_BLINK_CLEARBUF:
blink_clearbuf(msg->data[0]);
break;
//set auto position increment flag
case FKT_BLINK_SETAUTOPOS:
blink_setautopos(msg->data[0]);
break;
//set the current blinkenbuffer offset position
case FKT_BLINK_SETPOS:
blink_setpos(msg->data[0]);
break;
//puts the current blinkenbuffer to the frontbuffer
case FKT_BLINK_SHOW:
blink_show();
break;
//puts data into the blinkenbuffer
case FKT_BLINK_DATA:
blink_data(msg->data, msg->dlc - 1);
break;
#endif
}
}
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void bcan_process_messages() {
pdo_message *msg = (pdo_message*) can_get_nb();
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while (msg) {
if (!msg)
return;
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if (msg->addr_dst == myaddr && msg->port_dst == PORT_MGT)
process_mgt_msg(msg);
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if (msg->addr_dst == myaddr && msg->port_dst == PORT_BORG)
process_borg_msg(msg);
msg = (pdo_message*) can_get_nb();
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}
}