FreeCalypso > hg > freecalypso-tools

annotate rvinterf/asyncshell/poweroff.c @ 497:74610c4f10f7

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target-utils: added 10 ms delay at the end of abb_power_off() The deosmification of the ABB access code (replacement of osmo_delay_ms() bogus delays with correctly-timed ones, which are significantly shorter) had one annoying side effect: when executing the poweroff command from any of the programs, one last '=' prompt character was being sent (and received by the x86 host) as the Calypso board powers off. With delays being shorter now, the abb_power_off() function was returning and the standalone program's main loop was printing its prompt before the Iota chip fully executed the switch-off sequence! I thought about inserting an endless tight loop at the end of the abb_power_off() function, but the implemented solution of a 10 ms delay is a little nicer IMO because if the DEVOFF operation doesn't happen for some reason in a manual hacking scenario, there won't be an artificial blocker in the form of a tight loop keeping us from further poking around.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 25 May 2019 20:44:05 +0000
parents e7502631a0f9
children
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1 /*
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2 * fc-shell poweroff and tgtreset commands
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include "pktmux.h"
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9 #include "etm.h"
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11 send_etm_cmd(buf, len)
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12 u_char *buf;
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13 {
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14 int i, c;
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15
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16 buf[0] = RVT_TM_HEADER;
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17 c = 0;
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18 for (i = 1; i <= len; i++)
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19 c ^= buf[i];
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20 buf[i] = c;
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21 send_pkt_to_target(buf, len + 2);
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22 return 0;
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23 }
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24
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25 cmd_poweroff()
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26 {
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27 u_char cmdpkt[7];
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28
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29 cmdpkt[1] = ETM_CORE;
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30 cmdpkt[2] = TMCORE_OPC_CODEC_WR;
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31 cmdpkt[3] = 30; /* VRPCDEV */
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32 cmdpkt[4] = 0x01; /* low 8 bits */
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33 cmdpkt[5] = 0; /* high 2 bits */
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34 return send_etm_cmd(cmdpkt, 5);
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35 }
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36
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37 cmd_tgtreset()
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38 {
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39 u_char cmdpkt[4];
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40
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41 cmdpkt[1] = ETM_CORE;
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42 cmdpkt[2] = TMCORE_OPC_RESET;
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43 return send_etm_cmd(cmdpkt, 2);
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44 }