73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
/*
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* Description: Request time strings from a can-master
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* and show them in an animation
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* Author: hansi
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <avr/pgmspace.h>
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#include "../config.h"
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#include "../can/can.h"
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#include "../can/lap.h"
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#include "../util.h"
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#include "../scrolltext/scrolltext.h"
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//hackhack
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extern can_addr myaddr;
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//send a time request packet via can
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void time_request(void)
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{
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pdo_message msg;
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//source address
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msg.addr_src = myaddr;
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msg.port_src = PORT_MGT;
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//destination address
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msg.addr_dst = TIME_MASTER_ADDR;
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msg.port_dst = PORT_MGT;
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//time request command
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msg.cmd = FKT_MGT_TIMEREQUEST;
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//set length and transmit
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msg.dlc = 1;
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can_transmit((can_message *)&msg);
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}
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//update time via can, possibly blocking
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uint8_t time_update(void)
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{
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uint8_t timeout = TIME_UPDATE_TIMEOUT;
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//set "time-has-been-updated" to false
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lap_time_update = 0;
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//send request
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time_request();
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//wait some time for a reply in 1ms steps
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while((lap_time_update == 0) && (timeout-- > 0))
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wait(1);
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return lap_time_update;
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}
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//display the time
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void time_anim(void)
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{
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char timestring[48];
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//update time and return if we had no success
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if(time_update() == 0)
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return;
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//convert the time to a string
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sprintf_P(timestring, PSTR(">+:p42d50/#%02hi#<;+p42d50/# %02hi#x49y8b255p42d50#:"), lap_time_h, lap_time_m);
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//show the time
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scrolltext(timestring);
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}
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