FreeCalypso > hg > freecalypso-tools
view target-utils/pirexplore/rtc.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> |
---|---|
date | Sat, 25 May 2019 20:44:05 +0000 |
parents | e7502631a0f9 |
children |
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#include "types.h" #include "rtc.h" static void read_time(tm) struct rtctime *tm; { tm->year = RTC_REGS.rtc_cur.year; tm->month = RTC_REGS.rtc_cur.month; tm->day_of_month = RTC_REGS.rtc_cur.day_of_month; tm->day_of_week = RTC_REGS.rtc_cur.day_of_week; tm->hours = RTC_REGS.rtc_cur.hours; tm->minutes = RTC_REGS.rtc_cur.minutes; tm->seconds = RTC_REGS.rtc_cur.seconds; } void cmd_rtc() { u8 ctrl; struct rtctime time1, time2; int c; ctrl = RTC_REGS.rtc_ctrl_reg; printf("RTC_CTRL_REG = %02X ", ctrl); switch (ctrl) { case 0x00: printf("(frozen)\n"); break; case 0x01: printf("(running)\n"); break; default: printf("(unexpected)\n"); return; } printf("Reading RTC time"); for (;;) { c = serial_in_poll(); if (c >= 0) { printf("<INTERRUPT>\n"); return; } read_time(&time1); read_time(&time2); if (!bcmp(&time1.minutes, &time2.minutes, 6)) break; } printf("\nDATE %02X-%02X-%02X DOW %02X TIME %02X:%02X:%02X\n", time2.year, time2.month, time2.day_of_month, time2.day_of_week, time2.hours, time2.minutes, time2.seconds); } void cmd_rtccomp() { printf("%04X\n", (RTC_REGS.rtc_comp_msb_reg << 8) | RTC_REGS.rtc_comp_lsb_reg); }