diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/arduino-compatibility.rst | 17 | ||||
| -rw-r--r-- | source/lang/api/disabledebugports.rst | 6 |
2 files changed, 13 insertions, 10 deletions
diff --git a/source/arduino-compatibility.rst b/source/arduino-compatibility.rst index e6852a0..c200411 100644 --- a/source/arduino-compatibility.rst +++ b/source/arduino-compatibility.rst @@ -26,12 +26,12 @@ EABI target (:command:`arm-non-eabi-gcc`). A (preliminary) reference on :ref:`using arm-none-eabi-gcc <arm-gcc>` is available. The bitwidth of the processor means that the Maple can process 32-bit -operations (like adding two 32-bit integers) in a single instruction, -while an Arduino processor would have to split up large operations -into several smaller ones. In a lot of cases 8-bit operations are -plenty (integers 0-255, single characters of text, etc.), but if -you're dealing with higher resolution data, the speed up could be -significant. +operations (like adding or multiplying two 32-bit integers) in a +single instruction, while an Arduino processor would have to split up +large operations into several smaller ones. In a lot of cases 8-bit +operations are plenty (integers 0-255, single characters of text, +etc.), but if you're dealing with higher resolution data, the speed up +could be significant. A trade-off is that code could be larger as well; program instructions and memory locations can be up to 32 bits each. However, removal of @@ -45,8 +45,9 @@ Header Numbering and Incompatibilities The numbering of headers is different; on the Maple each GPIO has a unique number: 0, 1, 2, all the way up to 37 (actually, there are -:ref:`a few more <jtag>`...). On the Arduino, the analog pins are -numbered separately (A0-A5) from the digital pins (D0\ -D13). +:ref:`a few more <lang-disabledebugports>`...). On the Arduino, the +analog pins are numbered separately (A0-A5) from the digital pins (D0\ +-D13). The incompatible hardware differences are: diff --git a/source/lang/api/disabledebugports.rst b/source/lang/api/disabledebugports.rst index 43ac337..283cdbf 100644 --- a/source/lang/api/disabledebugports.rst +++ b/source/lang/api/disabledebugports.rst @@ -22,10 +22,12 @@ Example } void loop() { - // Now you can use the debug port pins as ordinary pins + // Now you can use the debug port pins (the pins on the JTAG + // header on the Maple) as ordinary pins. } See Also -------- -* :ref:`lang-enabledebugports` +- :ref:`lang-enabledebugports` +- :ref:`Important erratum on Maple pin 43 <maple-nrst-pb4>` |