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author | Perry Hung <iperry@alum.mit.edu> | 2010-04-25 18:14:43 -0400 |
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committer | Perry Hung <iperry@alum.mit.edu> | 2010-04-25 18:14:43 -0400 |
commit | 4ccbeb08e64b6bc7cee1f54a04001eff778b4282 (patch) | |
tree | 05f71e01c98ac341c029b2a050b796f1be3de8b5 /wirish/pwm.c | |
parent | b41eb846ca60559cff242d0c550699eb8f309909 (diff) | |
parent | 62552a6f3f93223682f9df2df2614411f7e3d54c (diff) | |
download | librambutan-4ccbeb08e64b6bc7cee1f54a04001eff778b4282.tar.gz librambutan-4ccbeb08e64b6bc7cee1f54a04001eff778b4282.zip |
Merge branch 'master' into spi
Diffstat (limited to 'wirish/pwm.c')
-rw-r--r-- | wirish/pwm.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/wirish/pwm.c b/wirish/pwm.c new file mode 100644 index 0000000..40715b5 --- /dev/null +++ b/wirish/pwm.c @@ -0,0 +1,51 @@ +/* ***************************************************************************** + * The MIT License + * + * Copyright (c) 2010 Perry Hung. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + * ****************************************************************************/ + +/** + * @brief + */ + +#include "wirish.h" +#include "timers.h" +#include "io.h" +#include "pwm.h" + +extern const PinMapping PIN_MAP[NR_MAPLE_PINS]; + +void pwmWrite(uint8 pin, uint16 duty_cycle) { + TimerCCR ccr; + + if (pin >= NR_MAPLE_PINS) { + return; + } + + ccr = PIN_MAP[pin].timer_channel; + + if (ccr == TIMER_INVALID) + return; + + timer_pwm_write_ccr(ccr, duty_cycle); +} + + |