view target-utils/pirexplore/main.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 c90b1fff224a
children
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#include "types.h"

main()
{
	uart_select_init();
	printf("Pirelli hardware exploration utility running\n");
	print_boot_rom_info();
	/*
	 * Make the same register settings as in the init script used by
	 * fc-loadtool and fc-xram: ../../loadtools/scripts/pirelli.init
	 */
	*(volatile u16 *)0xfffffb00 = 0x00A4;
	*(volatile u16 *)0xfffffb02 = 0x00A4;
	*(volatile u16 *)0xfffffb06 = 0x00A4;
	*(volatile u16 *)0xfffef006 = 0x0008;
	/* setup matching what the official firmware does */
	*(volatile u16 *)0xfffef008 = 0x6050;
	*(volatile u16 *)0xfffef00a = 0x021F;
	/*
	 * Other register settings replicating what OsmocomBB does
	 * in board/pirelli_dpl10/init.c
	 */
	*(volatile u16 *)0xfffe4804 = 0xFF6D;
	*(volatile u16 *)0xfffe4802 = 0x0000;
	/* enable ARMIO clock in order to exercise buzzer/vibrator */
	*(volatile u16 *)0xfffe4806 = 0xFFF3;
	/* nCS4 setup for SPCA552E */
	*(volatile u16 *)0xfffffb0a = 0x00A7;
	/* initialize PWL registers like OsmocomBB does */
	*(volatile u8 *)0xfffe8000 = 0x32;
	*(volatile u8 *)0xfffe8001 = 0x01;
	for (;;) {
		putchar('=');
		if (command_entry())
			command_dispatch();
	}
}