2009-05-22 23:48:49 +03:00
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#pypp 0
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2009-06-01 15:26:42 +03:00
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// Iris: micro-kernel for a capability-based operating system.
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// thread0.ccp: Testing userspace thread.
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// Copyright 2009 Bas Wijnen <wijnen@debian.org>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "iris.h"
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2009-05-22 23:48:49 +03:00
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2009-06-01 20:22:11 +03:00
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// GPIO pins for the keyboard: Rows =
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// Rows = 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 125
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// Cols = 0, 1, 2, 3, 4, 5, 6, 7
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// Rows: 60...6f; 7d
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// Nicely aligned to a port: use cols as output; rows as input.
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// Map memory from b0010000, which is really 10010000 in kseg1.
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#define D(n) (*(volatile unsigned *)(0x00 + 0x30 * n + address))
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#define DI(n) (*(volatile unsigned *)(0x04 + 0x30 * n + address))
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#define AL(n) (*(volatile unsigned *)(0x10 + 0x30 * n + address))
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#define AU(n) (*(volatile unsigned *)(0x14 + 0x30 * n + address))
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#define IE(n) (*(volatile unsigned *)(0x20 + 0x30 * n + address))
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void event (bool release, unsigned col, unsigned row):
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debug_set_led ((col & 1) | (row & 2) | (release ? 4 : 0))
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2009-05-22 23:48:49 +03:00
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int main ():
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2009-06-01 20:22:11 +03:00
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// map memory
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Capability page = memory_create_page (__my_memory)
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alloc_physical (page, 0x10010000, 0)
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unsigned const address = 0x00010000
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memory_map (__my_memory, page, address)
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// Disable all interrupts.
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IE (3) &= ~0x2000ffff
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IE (0) &= ~0x000000ff
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// Set all to GPIO
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AL (3) = 0
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AU (3) &= ~0x0c000000
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AL (0) &= ~0x0000ffff
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// Set all to input
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DI (3) |= 0x2000ffff
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DI (0) |= 0x000000ff
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unsigned keys[2][8]
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for unsigned i = 0; i < 8; ++i:
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keys[1][i] = 0x2000ffff
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2009-05-22 23:48:49 +03:00
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while true:
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2009-06-01 20:22:11 +03:00
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// read keyboard
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for unsigned col = 0; col < 8; ++col:
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// set col to output, all others to input
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DI (0) = (DI (0) & ~0x000000ff) | (1 << col)
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// read input
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keys[0][col] = D (3) & ~0x2000ffff
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// Generate events
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if keys[0][col] == keys[1][col]:
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continue
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unsigned bit, b
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for bit = 1, b = 0; bit < 0x10000; bit <<= 1, ++b:
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if (keys[0][col] ^ keys[1][col]) & bit:
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event (keys[0][col] & bit, col, b)
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if (keys[0][col] ^ keys[1][col]) & 0x20000000:
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// Not really bit 16, but it's easier to handle.
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event (keys[0][col] & 0x20000000, col, 16)
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schedule ()
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