FreeCalypso > hg > freecalypso-tools
annotate loadtools/compalram.c @ 497:74610c4f10f7
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> |
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date | Sat, 25 May 2019 20:44:05 +0000 |
parents | 8c011177adb9 |
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1 /* |
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2 * This module contains the main() function for fc-compalram, a trivial |
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3 * utility that feeds a binary download image to Compal's bootloader |
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4 * and then switches into serial tty pass-through. |
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5 */ |
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6 |
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7 #include <stdio.h> |
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8 #include <stdlib.h> |
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9 |
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10 char *target_ttydev; |
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11 |
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12 main(argc, argv) |
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13 char **argv; |
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14 { |
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15 if (argc != 3) { |
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16 fprintf(stderr, "usage: fc-compalram ttyport image.bin\n"); |
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17 exit(1); |
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18 } |
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19 target_ttydev = argv[1]; |
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20 set_compalstage_fullpath(argv[2]); |
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21 |
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22 open_serial_port(target_ttydev); |
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23 perform_compal_stage(); |
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24 tty_passthru(); |
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25 exit(0); |
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26 } |