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| author | Marti Bolivar <mbolivar@leaflabs.com> | 2011-04-26 03:27:10 -0400 |
|---|---|---|
| committer | Marti Bolivar <mbolivar@leaflabs.com> | 2011-04-26 03:27:10 -0400 |
| commit | 5606a05e2992043387a9cf995365db7e1dc83cff (patch) | |
| tree | 163705188111e89e18f2325e7cb987672381bcb7 /source/pwm.rst | |
| parent | 1b12488ce8b7c69968709b0c1c17975e519b0f5e (diff) | |
| download | librambutan-5606a05e2992043387a9cf995365db7e1dc83cff.tar.gz librambutan-5606a05e2992043387a9cf995365db7e1dc83cff.zip | |
0.0.10 Documentation checkpoint.
The vast majority of the Maple-specific values have been pulled out of
the higher-level overview pages and replaced with refs into documents
under /docs/source/hardware/.
Much of the work that's left to be done in this regard is labeled with
versioned TODO and FIXME comments.
Suggestions from StephenFromNYC and gbulmer were incorporated from
this forum thread:
http://forums.leaflabs.com/topic.php?id=703
Diffstat (limited to 'source/pwm.rst')
| -rw-r--r-- | source/pwm.rst | 31 |
1 files changed, 8 insertions, 23 deletions
diff --git a/source/pwm.rst b/source/pwm.rst index 1144d55..ac67689 100644 --- a/source/pwm.rst +++ b/source/pwm.rst @@ -19,29 +19,14 @@ filtering) generate audio waveforms. Overview -------- -The Maple has a large number of 16-bit PWM outputs, each connected to -one of 4 timers. Some configuration, such as the clock rate or -prescaling, must be common to the entire timer; see the :ref:`timer -documentation <timers>` for more information. - -Note that unlike the Arduino, the Maple does not have PWM -functionality on pin D10; all other pins are :ref:`compatible -<arduino-compatibility>`. - -The following table shows which timer can generate which PWM -outputs. See the :ref:`pin mapping table <pin-mapping-mega-table>` to -track down exactly which timer *channel* corresponds to each pin. - -.. _pwm-timer-table: - -.. csv-table:: - :header: Timer, PWM Headers - :delim: | - - Timer1 | D6,D7,D8 - Timer2 | D0,D1,D2,D3 - Timer3 | D11,D12,D27,D28 - Timer4 | D5,D9,D14,D24 +.. FIXME [0.1.0] More information about how timer channels drive PWM + +Each PWM output is driven by an output channel connected to one of 4 +timers. Some configuration, such as the clock rate or prescaling, +must be common to the entire timer; see the :ref:`timer documentation +<timers>` for more information. See your board's :ref:`pin mapping +tables <gpio-pin-mapping-tables>` to track down the correspondence +between timer channels and GPIO pins. Background ---------- |