From 1ae44013703af4e8757abe6adb70745861bf8f9f Mon Sep 17 00:00:00 2001 From: Nicolas Schodet Date: Sun, 16 Dec 2012 19:20:11 +0100 Subject: digital/ucoolib/ucoolib/utils: add delay functions --- digital/ucoolib/ucoolib/utils/delay.arm.hh | 52 ++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 digital/ucoolib/ucoolib/utils/delay.arm.hh (limited to 'digital/ucoolib/ucoolib/utils/delay.arm.hh') diff --git a/digital/ucoolib/ucoolib/utils/delay.arm.hh b/digital/ucoolib/ucoolib/utils/delay.arm.hh new file mode 100644 index 00000000..ad67002f --- /dev/null +++ b/digital/ucoolib/ucoolib/utils/delay.arm.hh @@ -0,0 +1,52 @@ +#ifndef ucoolib_utils_delay_arm_hh +#define ucoolib_utils_delay_arm_hh +// ucoolib - Microcontroller object oriented library. {{{ +// +// Copyright (C) 2012 Nicolas Schodet +// +// APBTeam: +// Web: http://apbteam.org/ +// Email: team AT apbteam DOT org +// +// This program 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 2 of the License, or +// (at your option) any later version. +// +// This program 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 this program; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +// }}} + +namespace ucoo { + +/// Wait for an integral number of microseconds, used to implement delay. +void +delay_us (int us); + +/// Wait for a small integral number of nanoseconds, used to implement short +/// delay. +void +delay_ns (int us); + +/// Wait for the specified delay in seconds. +extern inline void +delay (double s) +{ + if (s < 1e-6) + delay_ns (static_cast (s * 1e9)); + else + delay_us (static_cast (s * 1e6)); +} +extern inline void +delay (double s) __attribute__ ((always_inline)); + +} // namespace ucoo + +#endif // ucoolib_utils_delay_arm_hh -- cgit v1.2.3