FreeCalypso > hg > freecalypso-tools
view target-utils/pirexplore/flashid.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" void cmd_flashid(argbulk) char *argbulk; { char *argv[2]; u32 base_addr; if (parse_args(argbulk, 1, 1, argv, 0) < 0) return; if (argv[0][0] == '1' && !argv[0][1]) base_addr = 0x03000000; else if (argv[0][0] == '2' && !argv[0][1]) base_addr = 0x02000000; else { printf("ERROR: argument must be 1 or 2\n"); return; } printf("Base addr: %08X\n", base_addr); *(volatile u16 *)(base_addr + 0xAAA) = 0xAA; *(volatile u16 *)(base_addr + 0x554) = 0x55; *(volatile u16 *)(base_addr + 0xAAA) = 0x90; printf("offset 00: %04X\n", *(volatile u16 *)(base_addr + 0x00)); printf("offset 02: %04X\n", *(volatile u16 *)(base_addr + 0x02)); printf("offset 1C: %04X\n", *(volatile u16 *)(base_addr + 0x1C)); printf("offset 1E: %04X\n", *(volatile u16 *)(base_addr + 0x1E)); *(volatile u16 *)(base_addr + 0xAAA) = 0xF0; }