[AT-START-F403A Review] Part 5: On-chip Flash routine test

w494143467

[AT-START-F403A Review] Part 5: On-chip Flash routine test [Copy link]

 

1. Introduction

Flash is very important for chips. This article will first talk about the use of Flash. The official has already provided a Demo, so we can use it as long as we know how it works. The performance can also be tested, but this article will not talk about it first.

2. Testing

First open the Flash read and write routines, the routines used are shown in the figure.

After using Keil to open the routine, you can see that the address written to Flash is [0x80000000+1024*522]. The Flash read buffer and write buffer are created respectively. Finally, the Flash read and write processes are run in the main program.

In order to be able to see when the reading and writing are performed, the program in main is modified as shown below.

int main(void)
{

  Delay_init();
  UART_Print_Init(115200);	
  AT32_LEDn_Init(LED2);				
  AT32_LEDn_Init(LED3);			
	printf("Flash Demo Start!\r\n");

  //Fill BufferWrite data to test
  for(Index=0;Index<TEST_BUFEER_SIZE;Index++)
  {
    BufferWrite[Index]=Index;
  }
		
    FLASH_Write(TEST_FLASH_ADDRESS_START,BufferWrite,TEST_BUFEER_SIZE);		//Write data to flash
		printf("Write Success!\r\n");
    FLASH_Read(TEST_FLASH_ADDRESS_START,BufferRead,TEST_BUFEER_SIZE);   	//read data from flash
		printf("Read Success!\r\n");

  if(Buffercmp(BufferWrite,BufferRead,TEST_BUFEER_SIZE)==PASSED)        //Compare the buffer
  {
    AT32_LEDn_ON(LED2);
    AT32_LEDn_OFF(LED3);    
  }
  else
  {
    AT32_LEDn_OFF(LED2);
    AT32_LEDn_ON(LED3);  
  }

  while(1)
  {

  }
}

Then connect the serial port, the serial port on the board sends PA9, connect the RX of the serial port module to PA9 on the board, and finally run the program. The content printed on the serial port is as shown in the figure below. It seems that the reading speed is quite fast, and the serial port does not recognize that it is a new data.

Next, let's debug and check the storage status of Flash. First, run the program to while(1), and then check the content at the address [0x80000000+1024*522]. You can see that it is the same as the written content, and data is stored starting from 0.

Then check whether the content of the received Buffer is consistent. You can see that the content of the received Buffer is consistent with the content of the sent Buffer, which means that the reading is also normal.

3. Summary

The Flash reading and writing of AT-START-F403A is still very easy to use, but I don’t know how much data can be read and written at a time. We will test it in the next article.

okhxyyo

Yatli AT-START-F403A Review

Summary post: https://en.eeworld.com/bbs/thread-1143018-1-1.html

freebsder

The packaging is quite good. The flash operation and packaging of some factories are complicated.

w494143467

Yes, but some are encapsulated to be used as storage management systems, and I have encountered one.

damiaa

Not bad, it can be used if the storage content is not very large and it is not used frequently. A board can save a few cents.

Jacktang

Well organized