New Board: STM32F030F4 Demo Board

[Adminius]

Hi,
i'm trying to add support for this china board.

1. Question: I think nobody will have "custom" boards in official Core. Right? => how to share this board with others?
2. STM32CubeMX doen't export stm32f030x4.h... so i use stm32f030x6.h instead, is it ok?
3. I tried to compile Blink.ino, but: Sketch uses 10124 bytes (61%) of program storage space. Maximum is 16384 bytes. Global variables use 3704 bytes (90%) of dynamic memory, leaving 392 bytes for local variables. Maximum is 4096 bytes. Low memory available, stability problems may occur.
   Any chance to get more RAM?

[fpistm]

Hi,
1/ it is possible to add custom boards. This core mainly manage MCU. Boards is only a dedicated "pinmapping". (ex #61 I have to end).
2/ I think you should use this one: STM32F030F4Px.xml
(if this is this one http://www.hotmcu.com/stm32f030f4p6-minimum-systerm-boardcortexm0-p-208.html)
3. You could try to disable some instance (ex: No Serial)
But doing more stuff than a blink will not use a lot of more RAM as instance will be already here.

[fpistm]

Hi @Adminius,
is it ok to close this issue?

[Adminius]

@fpistm pls not yet. i was on vacation.
it's ready, but i have to test it.

[fpistm]

No worries ;)

[Adminius]

btw. this board/issue is not blocker for next release ;)

[Sod-Almighty]

I have this board. How can I use it with this library? I don't see any options to select this model of chip.

[Adminius]

it is not possible yet... i have to find a time to test my implementation. after that i can commit it to this repository.

This board have not enough pins for standart Arduino Layout (e.g. SPI on D10-D13)
I also "converted" UART-Header to i2c header, because i2c is only available on this pins, but UART can be switched to PA2/PA3

[fpistm]

I think you should not try to be aligned with Ardunio layout for this board, user will mainly use the pin name PXy (like the blue pill)

[Adminius]

i will also use PXy ;)
I thing i will change the order...
PA0 - D0 - A0
PA1 - D1 - A1
PA2 - D2 - A2 - TX
PA3 - D3 - A3 - RX
PA4 - D4 - A4 - LED
PA5 - D5 - A5 - SCK
PA6 - D6 - A6 - MISO
PA7 - D7 - A7 - MOSI
PB1 - D8 - A8 - SCK
PA9 - D9 - SCL
PA10 - D10 - SDA
PA13 - D11 - SWDIO
PA14 - D12 - SWCLK
it makes more sense an Dy and Ay are consist (also with PXy)

[fpistm]

Just pay attention you will have to duplicate Analog pins else this will not work.
See ffe5a3f

I do that for Maple variant:
https://github.com/stm32duino/Arduino_Core_STM32/pull/213/files#diff-a15dd2dfb958a07755b98c8a5767f968R76

Note: Even if in this case it should work as D0=A0=0

[Adminius]

yes, i know:

// Pin number
enum {
PA0, //D0
PA1, //D1
PA2, //D2 - RX
PA3, //D3 - TX
PA4, //D4 - LED
PA5, //D5 - SCK
PA6, //D6 - MISO
PA7, //D7 - MOSI
PB1, //D8 - SS
PA9, //D9 - SCL (TX UART Header)
PA10, //D10 - SDA (RX UART Header)
PA13, //D11 - SWDIO
PA14, //D12 - SWCLK
// Duplicated pins in order to be aligned with PinMap_ADC
// A0 have to be greater than NUM_ANALOG_INPUTS
PA_0, //D13/A0 = D0
PA_1, //D14/A1 = D1
PA_2, //D15/A2 = D2
PA_3, //D16/A3 = D3
PA_4, //D17/A4 = D4
PA_5, //D18/A5 = D5
PA_6, //D19/A6 = D6
PA_7, //D20/A7 = D7
PB_1, //D21/A8 = D8
};

[Adminius]

@fpistm what is the best name for this board (menu, folder name...)?
I think "STM32F030F4P6 Minimum Systerm Board" is to long