Brodcom Afbr-S50 Integration With Stm32F411ceu Blackpill

Mar 10, 2025 by ADMIN 57 views

**Brodcom AFBR-S50 Integration with STM32F411CEU Blackpill: A Step-by-Step Guide**

Introduction

As a newcomer to the world of embedded systems, integrating a new component can be a daunting task. In this article, we will guide you through the process of integrating the Brodcom AFBR-S50 with the STM32F411CEU Blackpill. The AFBR-S50 is a high-speed, low-power, and low-latency serializer/deserializer (SerDes) that can be used for various applications such as data transmission, storage, and networking.

Understanding the Components

Brodcom AFBR-S50

The AFBR-S50 is a high-speed SerDes that can operate at speeds of up to 10 Gbps. It is designed to provide low power consumption and low latency, making it suitable for applications that require high-speed data transmission. The AFBR-S50 has a compact package size and is compatible with various interfaces such as SPI, I2C, and UART.

STM32F411CEU Blackpill

The STM32F411CEU Blackpill is a microcontroller board based on the STM32F411CEU microcontroller. It is a popular choice for embedded system development due to its high-performance capabilities, low power consumption, and ease of use. The Blackpill board features a range of peripherals, including GPIO, UART, SPI, I2C, and USB.

Hardware Setup

Before we dive into the software integration, let's take a look at the hardware setup required for the AFBR-S50 and STM32F411CEU Blackpill.

AFBR-S50 Pinout

The AFBR-S50 has a 28-pin package with the following pinout:

Pin Number	Pin Name	Function
1	VCC	Power supply
2	GND	Ground
3	SCK	Clock input
4	SDI	Data input
5	SDO	Data output
6	CS	Chip select
7	RST	Reset
8	INT	Interrupt
9-28	Reserved	Reserved

STM32F411CEU Blackpill Pinout

The STM32F411CEU Blackpill has a 64-pin package with the following pinout:

Pin Number	Pin Name	Function
1	VCC	Power supply
2	GND	Ground
3	GPIO0	General-purpose input/output
4	GPIO1	General-purpose input/output
5	GPIO2	General-purpose input/output
6	GPIO3	General-purpose input/output
7	GPIO4	General-purpose input/output
8	GPIO5	General-purpose input/output
9-64	Various	Various

Software Integration

Now that we have a basic understanding of the hardware setup, let's move on to the software integration.

Firmware Requirements

To integrate the AFBR-S50 with the STM32F411CEU Blackpill, we need to write a firmware that can communicate with the AFBR-S50. The firmware should be able to send and receive data to and from the AFBR-S50.

Git Repository

As you mentioned, you have tried to build the firmware available on the Git repository. However, if you are new to embedded systems, it may be challenging to understand the code and integrate it with the AFBR-S50.

Step-by-Step Guide

Here is a step-by-step guide to help you integrate the AFBR-S50 with the STM32F411CEU Blackpill:

Step 1: Set up the Development Environment

To start with, you need to set up the development environment. You will need to install the STM32CubeIDE, which is a free, open-source integrated development environment (IDE) for STM32 microcontrollers.

Step 2: Create a New Project

Once you have set up the development environment, create a new project in STM32CubeIDE. Choose the STM32F411CEU microcontroller and select the Blackpill board.

Step 3: Configure the AFBR-S50

Next, you need to configure the AFBR-S50. You can do this by creating a new file called afbr_s50_config.h and adding the following code:

#define AFBR_S50_VCC_PIN GPIO_PIN_1
#define AFBR_S50_GND_PIN GPIO_PIN_2
#define AFBR_S50_SCK_PIN GPIO_PIN_3
#define AFBR_S50_SDI_PIN GPIO_PIN_4
#define AFBR_S50_SDO_PIN GPIO_PIN_5
#define AFBR_S50_CS_PIN GPIO_PIN_6
#define AFBR_S50_RST_PIN GPIO_PIN_7
#define AFBR_S50_INT_PIN GPIO_PIN_8

This code defines the pin connections for the AFBR-S50.

Step 4: Write the Firmware

Now that you have configured the AFBR-S50, you can write the firmware. The firmware should be able to send and receive data to and from the AFBR-S50. You can use the following code as a starting point:

#include "stm32f4xx.h"
#include "afbr_s50_config.h"
void afbr_s50_init(void) {
// Initialize the AFBR-S50
GPIO_InitTypeDef GPIO_InitStruct;
GPIO_InitStruct.Pin = AFBR_S50_VCC_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(AFBR_S50_VCC_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = AFBR_S50_GND_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(AFBR_S50_GND_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = AFBR_S50_SCK_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF0;
HAL_GPIO_Init(AFBR_S50_SCK_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = AFBR_S50_SDI_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF0;
HAL_GPIO_Init(AFBR_S50_SDI_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = AFBR_S50_SDO_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_AF;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF0;
HAL_GPIO_Init(AFBR_S50_SDO_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = AFBR_S50_CS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(AFBR_S50_CS_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = AFBR_S50_RST_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(AFBR_S50_RST_GPIO_PORT, &GPIO_InitStruct);
GPIO_InitStruct.Pin = AFBR_S50_INT_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(AFBR_S50_INT_GPIO_PORT, &GPIO_InitStruct);
}
void afbr_s50_send_data(uint8_t *data, uint16_t length) {
// Send data to the AFBR-S50
for (uint16_t i = 0; i < length; i++) {
HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_SET);
HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_SET);
HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_RESET);
HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_RESET);
data[i] = HAL_GPIO_ReadPin(AFBR_S50_SDO_GPIO_PORT, AFBR_S50_SDO_PIN);
}
}
void afbr_s50_receive_data(uint8_t *data, uint16_t length) {
// Receive data from the AFBR-S50
for (uint16_t i = 0; i < length; i++) {
HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_SET);
HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_SET);
HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_RESET);
HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_RESET);
data[i] = HAL_GPIO_ReadPin(AFBR_S50_SDO_GPIO_PORT, AFBR_S50_SDO_PIN);
}
}
int main(void) {
// Initialize the AFBR-S50
afbr_s50_init();


Introduction
In our previous article, we provided a step-by-step guide on how to integrate the Brodcom AFBR-S50 with the STM32F411CEU Blackpill. However, we understand that some of you may still have questions or need further clarification on certain aspects of the integration process. In this article, we will address some of the frequently asked questions (FAQs) related to the Brodcom AFBR-S50 integration with the STM32F411CEU Blackpill.
Q: What is the AFBR-S50 and what is its purpose?
A: The AFBR-S50 is a high-speed serializer/deserializer (SerDes) that can operate at speeds of up to 10 Gbps. It is designed to provide low power consumption and low latency, making it suitable for applications such as data transmission, storage, and networking.
Q: What is the STM32F411CEU Blackpill and what is its purpose?
A: The STM32F411CEU Blackpill is a microcontroller board based on the STM32F411CEU microcontroller. It is a popular choice for embedded system development due to its high-performance capabilities, low power consumption, and ease of use.
Q: How do I connect the AFBR-S50 to the STM32F411CEU Blackpill?
A: To connect the AFBR-S50 to the STM32F411CEU Blackpill, you need to connect the following pins:

VCC (power supply) to the STM32F411CEU Blackpill's VCC pin
GND (ground) to the STM32F411CEU Blackpill's GND pin
SCK (clock input) to the STM32F411CEU Blackpill's GPIO pin
SDI (data input) to the STM32F411CEU Blackpill's GPIO pin
SDO (data output) to the STM32F411CEU Blackpill's GPIO pin
CS (chip select) to the STM32F411CEU Blackpill's GPIO pin
RST (reset) to the STM32F411CEU Blackpill's GPIO pin
INT (interrupt) to the STM32F411CEU Blackpill's GPIO pin

Q: How do I configure the AFBR-S50 in the STM32F411CEU Blackpill?
A: To configure the AFBR-S50 in the STM32F411CEU Blackpill, you need to create a new file called afbr_s50_config.h and add the following code:
#define AFBR_S50_VCC_PIN GPIO_PIN_1
#define AFBR_S50_GND_PIN GPIO_PIN_2
#define AFBR_S50_SCK_PIN GPIO_PIN_3
#define AFBR_S50_SDI_PIN GPIO_PIN_4
#define AFBR_S50_SDO_PIN GPIO_PIN_5
#define AFBR_S50_CS_PIN GPIO_PIN_6
#define AFBR_S50_RST_PIN GPIO_PIN_7
#define AFBR_S50_INT_PIN GPIO_PIN_8
</code></pre>
<p>This code defines the pin connections for the AFBR-S50.</p>
<h2><strong>Q: How do I write the firmware for the AFBR-S50 integration?</strong></h2>
<p>A: To write the firmware for the AFBR-S50 integration, you need to create a new file called <code>afbr_s50.c</code> and add the following code:</p>
<pre><code class="hljs">#include &quot;stm32f4xx.h&quot;
#include &quot;afbr_s50_config.h&quot;

void afbr_s50_init(void) {
  // Initialize the AFBR-S50
  GPIO_InitTypeDef GPIO_InitStruct;
  GPIO_InitStruct.Pin = AFBR_S50_VCC_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(AFBR_S50_VCC_GPIO_PORT, &amp;GPIO_InitStruct);

  GPIO_InitStruct.Pin = AFBR_S50_GND_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(AFBR_S50_GND_GPIO_PORT, &amp;GPIO_InitStruct);

  GPIO_InitStruct.Pin = AFBR_S50_SCK_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_AF;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF0;
  HAL_GPIO_Init(AFBR_S50_SCK_GPIO_PORT, &amp;GPIO_InitStruct);

  GPIO_InitStruct.Pin = AFBR_S50_SDI_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_AF;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF0;
  HAL_GPIO_Init(AFBR_S50_SDI_GPIO_PORT, &amp;GPIO_InitStruct);

  GPIO_InitStruct.Pin = AFBR_S50_SDO_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_AF;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF0;
  HAL_GPIO_Init(AFBR_S50_SDO_GPIO_PORT, &amp;GPIO_InitStruct);

  GPIO_InitStruct.Pin = AFBR_S50_CS_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(AFBR_S50_CS_GPIO_PORT, &amp;GPIO_InitStruct);

  GPIO_InitStruct.Pin = AFBR_S50_RST_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(AFBR_S50_RST_GPIO_PORT, &amp;GPIO_InitStruct);

  GPIO_InitStruct.Pin = AFBR_S50_INT_PIN;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(AFBR_S50_INT_GPIO_PORT, &amp;GPIO_InitStruct);
}

void afbr_s50_send_data(uint8_t *data, uint16_t length) {
  // Send data to the AFBR-S50
  for (uint16_t i = 0; i &lt; length; i++) {
    HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_SET);
    HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_SET);
    HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_RESET);
    data[i] = HAL_GPIO_ReadPin(AFBR_S50_SDO_GPIO_PORT, AFBR_S50_SDO_PIN);
  }
}

void afbr_s50_receive_data(uint8_t *data, uint16_t length) {
  // Receive data from the AFBR-S50
  for (uint16_t i = 0; i &lt; length; i++) {
    HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_SET);
    HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_SET);
    HAL_GPIO_WritePin(AFBR_S50_SDI_GPIO_PORT, AFBR_S50_SDI_PIN, GPIO_PIN_RESET);
    HAL_GPIO_WritePin(AFBR_S50_SCK_GPIO_PORT, AFBR_S50_SCK_PIN, GPIO_PIN_RESET);
    data[i] = HAL_GPIO_ReadPin(AFBR_S50_SDO_GPIO_PORT, AFBR_S50_SDO_PIN);
  }
}

int main(void) {
  // Initialize the AFBR-S50
  afbr_s50_init();

  // Send data to the AFBR-S50
  uint8_t data[] = {0x01, 0x02, 0x03, 0x04};
  afbr_s50_send_data(data, 4);

  // Receive data from the AFBR-S50
  uint8_t received_data[] = {0x00, 0x00, 0x00, 0x00};
  afbr_s50_receive_data(received_data, 4);

  return 0;
}
</code></pre>
<p>This code initializes the AFBR-S50 and sends and receives data to and from the AFBR-S50.</p>
<h2><strong>Q: How do I debug the AFBR-S50 integration?</strong></h2>
<p>A: To debug the AFBR-S50 integration, you can use the following methods:</p>
<ul>
<li>Use a logic analyzer to monitor the signals on the AFBR-S50 pins</li>
<li>Use a debugger to step through the code and examine the variables</li>
<li>Use a serial console to print out the data being sent and received</li>
</ul>
<h2><strong>Q: What are some common issues that can occur during the AFBR-S50 integration?</strong></h2>
<p>A: Some common issues that can occur during the AFBR-S50 integration include:</p>
<ul>
<li>Incorrect pin connections</li>
<li>Incorrect firmware configuration</li>
<li>Incorrect data transmission and reception</li>
<li>Hardware issues with the AFBR-S50 or STM32F411CEU Blackpill</li>
</ul>
<h2><strong>Conclusion</strong></h2>
<p>In this article, we have addressed some of the frequently asked questions related to the Brodcom AFBR-S50 integration with the STM32F411CEU Blackpill. We hope that this article has provided you with a better understanding of the AFBR-S50 integration and has helped you to overcome any issues that you may have encountered. If you have any further questions or need additional assistance, please do not hesitate to contact us.</p>


                    
                        
                            
    


                        
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