STM32F4 Discovery

I have another question about the peripheral pins of the STM32F4 Discovery board.

There is a file with some board specific description:
https://github.com/stm32duino/Arduino_C … /variant.h

Wouldn’t it be better to have some definitions with which you can directly access the pins with digitalWrite like this:

#define USERBUTTON PA0

#define GREENLED PD12
#define ORANGELED PD13
#define REDLED PD14
#define BLUELED PD15
#define REDLEDOTGOVERCURRENT PD5

#define MICROPHON_CLK_INPUT PB10
#define MICROPHON_PDMDATA_OUTPUT PC3

#define NUMLEDS 5
const uint8_t Led[] = {GREENLED, ORANGELED, REDLED, BLUELED, REDLEDOTGOVERCURRENT};

void setLed(uint8_t n, uint8_t state)
{
if(n==4)digitalWrite(Led[n], !state);
else digitalWrite(Led[n], state);
}

void setup()
{
for (int n = 0; n < NUMLEDS; n++) pinMode(Led[n], OUTPUT);
pinMode(MICROPHON_CLK_INPUT, OUTPUT);
}

void loop()
{
for (int n = 0; n < NUMLEDS; n++)
{
setLed(n, HIGH);
delay(100);
setLed(n, LOW);
delay(100);
}
}

installation tips and advice, see wikis, Arduino_STM32 and the official F4 core on github
there are a few F4 Discovery boards, browse in the F4 forums.
the limitations of assorted F4 cores are (perhaps overly) discussed in the F4 forums.

OT – examples, HAL plenty, also unicore-mx-examples (SPL wrapper), libopencm3-examples (SPL wrapper)
if you want to go the HAL and bare metal route, look at CubeMX & System Workbench Ac6 from ST

stephen

Thanks for the answer.
I want to use exactly this board: STM32F4 Discovery

Because the newest work relating to this board happens in this repository I need someone who knows how to install it. The explanations in this Wiki do not work. Probably they are outdated and related to this older repository.

So I need someone who knows how.

Yes, the Wiki is related to Roger’s repository, not the newest one.
But there is no I2C and no support for the peripherals.
Using Roger’s repository, you can simply copy the Wire library from STM32F1 into STM32F4, or even create a symbolic link.
It is what I’m using since almost 2 years.

Using Roger’s repository, you can simply copy the Wire library from STM32F1 into STM32F4, or even create a symbolic link.

Thank you very much. That’s a good hint. I wonder why Roger is not copying the library itself in the repository.
My goal is to use the codec to create some sounds with the STM32F4 discovery boards.
Can me point to some code example?
The user “mubase” is using this version. But it is a software I2C and somehow mixed up.

Another question would be: How is this second repository related to Rogers work. There seems to be a lot of development going on.

Why copies are not done in F4 folder ? Simply because more than 2 years ago, we had discussion about the possibilities of merging folders, but it never happen.
The new repository is owned by Roger, but it is used by STM employees, so the authors are working at STM.
About I2C code, I personally using basic examples, such as Adafruit_MCP23017 or extEEPROM, I’ve never used any I2C Codec.

Thank you for your answer.

About I2C code, I personally using basic examples, such as Adafruit_MCP23017 or extEEPROM, I’ve never used any I2C Codec.

That’s a pity because the STM32F4 discovery has this interesting peripherals:

– MP45DT02 ST-MEMS-Microphone
– Audio-DAC CS43L22 with class D amplifier
– 3-Achsen-ST-MEMS-accelerometer

and I thought I can easily use them with the Arduino Environment.

Meanwhile I found the discussion branch where they discuss the development of the new coreF4

ChrisMicro wrote:That’s a pity because the STM32F4 discovery has this interesting peripherals:

Now I’m using the STM32GENERIC core and started to produce examples.

There are now examples for different peripherals of the board:

– LEDs example
– Button Example
– Accelerometer example
– Audio Codec example

Here is my example repo. Usually Daniel is pulling it after a while. Us his repo, if you can find the example there because it might be from a “core” point of view newer.

ChrisMicro wrote:No I’m using the STM32GENERIC core and started to produce examples.

There are now examples for different peripherals of the board:

– LEDs example
– Button Example
– Accelerometer example
– Audio Codec example

Here is my example repo. Usually Daniel is pulling it after a while. Us his repo, if you can find the example there because it might be from a “core” point of view newer.

I wonder it this works now for you ?

Unfortunately, no.
The serial terminal show constant values.
The red led is bright.
The green led is weak.

Michael, could you run the “LIS3DSx_Accelerometer_SerialUSB” from my repo

My board seems to have the “L” version of the MEMS:

accelerometer
INFO1 register: 0
INFO2 register: 0
WHO AM I register: 3B LIS3DSL sensor detected

ChrisMicro wrote:Michael, could you run the “LIS3DSx_Accelerometer_SerialUSB” from my repo

My board seems to have the “L” version of the MEMS:

accelerometer
INFO1 register: 0
INFO2 register: 0
WHO AM I register: 3B LIS3DSL sensor detected

Hi Michael,

I just added a basic sample player to my repo which plays to samples in random manner.
It lets room for a lot of artistic creativity.

Could you try it on your board an give me feedback how it is working?

I have made a new repository for the STM32F4 Discovery.

My first example is playing a sine wave with a BufferPlayer class.
Now sound creation is really simple