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1. 

   leaflabsandy
   Member

   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

   Posted 5 years ago #
2. 

   gbulmer
   Moderator

   If that page is to be improved, you might want to change

   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.

   Because there is now a column which does show 5V tolerance, maybe to

   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.

   Posted 5 years ago #
3. 

   gbulmer
   Moderator

   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.

   Posted 5 years ago #
4. 

   mbolivar
   LeafLabs

   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:
   http://redmine.leaflabs.com/issues/411

   Posted 5 years ago #

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