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view target-utils/pirexplore/main.c @ 407:19e5a3e2f9c0

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fcup-settime: moved time() retrieval a little closer to the output A fundamental problem with all simple time transfer tools is that there is always some delay between the time retrieval on the source system and that transmitted time being set on the destination, and the resulting time on the destination system is off by that delay amount. This delay cannot be fully eliminated when working in a simple environment like ours, but we should make our best effort to minimize it. In the present case, moving the atinterf_init() call before the time() retrieval should make a teensy-tiny improvement.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Aug 2018 21:52:17 +0000
parents c90b1fff224a
children
line wrap: on
line source

#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();
	}
}