mirror of
git://projects.qi-hardware.com/iris.git
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75 lines
2.4 KiB
COBOL
75 lines
2.4 KiB
COBOL
#pypp 0
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// Iris: micro-kernel for a capability-based operating system.
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// boot-programs/keyboard.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 "devices.hh"
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#define ARCH
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#include "arch.hh"
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// GPIO pins for the keyboard: (port.pin)
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// Cols = 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15, 3.29
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// Rows = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7
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// For some reason, it only works if the rows are input and the columns are output.
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static void event (bool release, unsigned row, unsigned col):
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kdebug ((release ? 0x10000 : 0) | (row << 8) | col)
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#define COL_MASK 0x2000ffff
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#define ROW_MASK 0x000000ff
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int main ():
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map_gpio ()
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// Disable all interrupts.
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GPIO_GPIER (3) &= ~COL_MASK
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GPIO_GPIER (0) &= ~ROW_MASK
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// Set all to GPIO.
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GPIO_GPALR (3) = 0
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GPIO_GPAUR (3) &= ~0x0c000000
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GPIO_GPALR (0) &= ~0x0003ffff
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// Set all rows to input and enable the pull-ups.
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GPIO_GPDIR (0) &= ~ROW_MASK
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GPIO_GPPUR (0) |= ROW_MASK
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// Set all columns to input and disable the pull-ups; set to 0 when output.
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GPIO_GPDIR (3) &= ~COL_MASK
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GPIO_GPPUR (3) &= ~COL_MASK
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GPIO_GPDR (3) &= ~COL_MASK
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#define NUM_COLS 17
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unsigned keys[NUM_COLS]
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for unsigned i = 0; i < NUM_COLS; ++i:
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keys[i] = 0xff
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// Pin numbers for the cols, relative to the start of the port (so minus 0x60).
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event (false, 0, 0)
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int const cols[NUM_COLS] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 29 }
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while true:
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// read keyboard
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for unsigned col = 0; col < NUM_COLS; ++col:
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GPIO_GPDIR (3) = (GPIO_GPDIR (3) & ~COL_MASK) | (1 << cols[col])
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udelay (100)
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unsigned data = GPIO_GPDR (0) & ROW_MASK
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// Generate events.
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for unsigned row = 0; row < 8; ++row:
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if (data ^ keys[col]) & (1 << row):
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event (data & (1 << row), row, col)
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keys[col] = data
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schedule ()
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