SPI2 hang on BlackPill F411

[VitorBoss]

I'm having trouble using SPI2 on WeAct black pill F411, this is the SPI library example:

#include <SPI.h>
//            MOSI  MISO  SCLK
SPIClass SPI3(PC12, PC11, PC10);

void setup() {
  SPI3.begin(2); //Enables the SPI3 instance with default settings and attaches the CS pin  
  SPI3.beginTransaction(1, settings); //Attaches another CS pin and configure the SPI3 instance with other settings  
  SPI3.transfer(2, 0x52); //Transfers data to the first device
  SPI3.transfer(1, 0xA4); //Transfers data to the second device. The SPI3 instance is configured with the right settings  
  SPI3.end() //SPI3 instance is disabled
}

I can't send anything over SPI2 on the device, with a logic analyzer I can't see the traces

Describe the bug
When the SPI try to send a data it simply keep waiting for the flag SPI_SR_TXE got cleared and stuck at spi_com.c line 422

To Reproduce
Just run this

#include <SPI.h>
//            MOSI  MISO  SCLK
SPIClass spiToUse(PB15, PB14, PB13);

void setup() {
  spiToUse.begin(PB12);
  spiToUse.beginTransaction(PB12, SPISettings(1000000, MSBFIRST, SPI_MODE0));
  spiToUse.transfer(PB12, 0x06); //write enable
  spiToUse.transfer(PB12, 0x05); //read status register
  uint8_t answer = spiToUse.transfer(PB12, 0xFE); //dummy byte
  spiToUse.endTransaction(PB12);
  Serial.println(answer);
}

Steps to reproduce the behavior:

1. Upload the code
2. See error

Expected behavior
It should send the data or return an error after timeout

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: latest win10
• Arduino IDE version: latest platforIO on VScode
• STM32 core version: 1.9
• Tools menu settings if not the default: build_flags = -g -std=gnu++11 -DARDUINO_BLACKPILL_F411CE -DHAL_UART_MODULE_ENABLED
• Upload method: STLink

Board (please complete the following information):

• Name: WeAct BlackPill F411
• Hardware Revision: 1.3
• Extra hardware used if any: FM25L256 FRAM chip but isn't needed for the error

[ABOSTM]

HI @VitorBoss,
This is not a bug,
just that the SCLK pin you used is not the one defined for this board for this SPI instance:
When looking at PeripheralPins.c for BlackPill F411 (Generic_F411Cx)
the SPI2 SCLK signal is PB10.
PB13 is defined (reserved) for SPI4 SCLK (and thus commented out for SPI2).

So you can

• either use PB10 for SPI2 SCLK
• or redefine in your sketch the PinMap_SPI_SCLK[] so as to define PB13 as SCLK for SPI2 (and comment out that pin for SPI4)
  see https://github.com/stm32duino/wiki/wiki/Custom-definitions#custom-pinmap-array

const PinMap PinMap_SPI_SCLK[] = {
  {PA_5,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
  {PB_0,  SPI5, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI5)},
  //   {PB_3,  SPI1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI1)},
  {PB_3,  SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI3)},
  {PB_10, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
  {PB_12, SPI3, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF7_SPI3)},
  {PB_13, SPI2, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF5_SPI2)},
  //{PB_13, SPI4, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_PULLUP, GPIO_AF6_SPI4)},
  {NC,    NP,    0}
};

[VitorBoss]

I'm following this image:

Here you can seed the PB12 been possible to use as NSS, also tried without library control and same result happens

[VitorBoss]

From datasheet

[ABOSTM]

1. What you show me is the hardware capabilities (independently from any software), what I told you about is how stm32duino core is currently implemented.
2. I don't say it is impossible, I just told it doesn't match the current blackpill F411 variant implementation.
   and I provide you the way to use PB13 for SPI2 (redefining PinMap_SPI_SCLK[])
3. I don't understand why you are now talking about NSS and PB12 ... as far as I can read, you managed of NSS with PB12 is correct.