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Diffstat (limited to 'lib/util.c')
-rw-r--r-- | lib/util.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lib/util.c b/lib/util.c new file mode 100644 index 0000000..3bf17b1 --- /dev/null +++ b/lib/util.c @@ -0,0 +1,35 @@ +/* + * spreadspace avr utils + * + * + * Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org> + * + * This file is part of spreadspace avr utils. + * + * spreadspace avr utils is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * any later version. + * + * spreadspace avr utils is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "avr/io.h" +#include "util.h" + +#if defined(CLKPR) +#define CPU_PRESCALE(n) do { CLKPR = 0x80; CLKPR = (n); } while(0) +#else +#define CPU_PRESCALE(n) +#endif + +void cpu_init(void) +{ + CPU_PRESCALE(0); +} |