LeafLabs Garden » Topic: Maple GPIO Pin Mapping Mega Table Enhancement

LeafLabs Garden » Topic: Maple GPIO Pin Mapping Mega Table Enhancement http://forums.leaflabs.com/topic.php?id=203 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:19:32 +0000 http://bbpress.org/?v=1.0.2 <![CDATA[Search]]> q http://forums.leaflabs.com/search.php mbolivar on "Maple GPIO Pin Mapping Mega Table Enhancement" http://forums.leaflabs.com/topic.php?id=203#post-1456 Thu, 30 Sep 2010 02:26:03 +0000 mbolivar 1456@http://forums.leaflabs.com/ not enough time to get it in for the 0.0.7 release, but definitely before 0.1.0. you can track the issue here: <a href="http://redmine.leaflabs.com/issues/411" rel="nofollow">http://redmine.leaflabs.com/issues/411</a> gbulmer on "Maple GPIO Pin Mapping Mega Table Enhancement" http://forums.leaflabs.com/topic.php?id=203#post-1413 Mon, 27 Sep 2010 08:09:41 +0000 gbulmer 1413@http://forums.leaflabs.com/ If there are extra columns to be added to the GPIO Mega Table, may I vote for adding the Arduino header pin map? I'd like it to be close to the left-hand side, and show, in one column, the primary Arduino pin name, and function (ADC) or PWM, as on an Arduino silk-screen. It seems like a friendly thing to do Ideally, add the I2C/SPI annotation too, but probably not the whole shebang of input capture pins, external clocks, etc. It might help folks to look at how they might move Arduino libraries and shields to Maple. gbulmer on "Maple GPIO Pin Mapping Mega Table Enhancement" http://forums.leaflabs.com/topic.php?id=203#post-1412 Mon, 27 Sep 2010 08:03:06 +0000 gbulmer 1412@http://forums.leaflabs.com/ If that page is to be improved, you might want to change <blockquote>The current and voltage limitations have not been copied over from the stm32 datasheet; see that reference linked at the bottom. In particular a number of GPIO pins are 5v tolerant (which means that applying 5v to a pin and reading it as input or allowing it to drain to ground will not damage that pin), while some are not.</blockquote> Because there is now a column which does show 5V tolerance, maybe to <blockquote>Some GPIO pins are 5v tolerant (which means that applying 5v to a pin and reading it as input or allowing it to drain to ground will not damage that pin), while some are not. This is indicated by the "5V okay" column. This is copied from the STM32F documents, so you may want to double check their in case we have made a mistake. The current limitations have not been copied over from the stm32 datasheet; see that reference linked at the bottom. In particular some of the pins are only capable of sinking or sourcing a few mA.</blockquote> leaflabsandy on "Maple GPIO Pin Mapping Mega Table Enhancement" http://forums.leaflabs.com/topic.php?id=203#post-1410 Sat, 25 Sep 2010 12:46:07 +0000 leaflabsandy 1410@http://forums.leaflabs.com/ Under Maple Docs: GPIO - Pin Mapping Mega Table Could you add the following when IDE 0.0.7 is released: #1. Between Timer/I2C add "PWM" column and indicate by YES all 15 PWM channels. #2. After the 5v OK? column add new columns "EXTI", "RISING", "FALLING", "HIGH" & "LOW" - used for the external interrupts. Under EXTI is the "channel number" and the other columns are Yes/No. Will level interrupts HIGH/LOW be used in the 0.0.7 release? If not, disreguard the last two columns. #3. Between "Pin/Stm32 Pin" columns add "Location" column. The "Location" column will have 8 pin hdr., 6 pin hdr., external hdr., or special (for the Maple rev. 5) -------------------------------------------------------------------------------- Enable external interrupts on all Maple GPIOs. Extend the wirish attachInterrupt() and detachInterrupt() interface to work with all GPIOs. Note: The STM32 external interrupt lines are multiplexed between GPIO ports. While any GPIO can be used as an external interrupt, not all of them can be used at the same time. Each EXTI[n] line selects between PA[n], PB[n], PC[n], etc. For example, line EXTI5 can be used with STM32 pins PA5, PB5, or PC5, but not all at the same time. See table: EXTI Line Maple Pin STM32 Pin 0 D2 PA0 0 D27 PB0 0 D15 PC0 1 D3 PA1 1 D28 PB1 1 D16 PC1 2 D1 PA2 2 D17 PC2 2 D25 PD2 3 D0 PA3 3 D18 PC3 4 D10 PA4 4 D19 PC4 5 D13 PA5 5 D4 PB5 5 D20 PC5 6 D12 PA6 6 D5 PB6 6 D35 PC6 7 D11 PA7 7 D9 PB7 7 D36 PC7 8 D6 PA8 8 D14 PB8 8 D37 PC8 9 D7 PA9 9 D24 PB9 9 D38 PC9 (BUT) 10 D8 PA10 10 D29 PB10 10 D26 PC10 11 D30 PB11 12 D31 PB12 13 D32 PB13 13 D21 PC13 14 D33 PB14 14 D22 PC14 15 D34 PB15 15 D23 PC15