Programming External SPI Flash on MM32F5330 through USART Host Interface
The MM32F5330 evaluation board is equipped with a 1 MB 25Q80 SPI NOR Flash and several USART/UART instances. By dedicating UART1 (PB6) to printf debug output and USART1 RX (PA10) to the host link, the MCU can receive a binary stream from a PC and persist it to external Flash.
Host Frame Format
The Python host transmits the file in fixed-size se ...
Posted on Thu, 13 Aug 2026 16:48:12 +0000 by thepriest
STM32 USART Serial Communication Protocol
Communication Interfaces
Communication interfaces enable data transfer between devices to expand hardware systems. Communication protocols define rules for data exchange between devices.
Common communication interfaces include:
USART: TX (transmit) and RX (receive) pins
I2C: SCL (serial clock) and SDA (serial data)
SPI: SCLK (serial clock), MO ...
Posted on Sun, 28 Jun 2026 16:42:03 +0000 by phpforever
STM32 DMA Transmission Issues and Solutions
Issue 1: Unexpected Data Transmission with DMA
#include "stm32f10x.h"
#include "Delay.h"
#include "DMA.h"
#include "Serial.h"
uint8_t dataBuffer[3];
int main(void)
{
/* Module initialization */
OLED_Init();
Key_Init();
Serial_Init();
MyDMA_TX_Init(DMA1_Channel4, (uint32_t)&USART1- ...
Posted on Tue, 02 Jun 2026 16:04:21 +0000 by kir10s
STM32 USART Communication with Button-Triggered Data Transmission
USART Serial Communication Fundamentals
Communication Concepts
Communication refers to the process of information exchange between computers and external devices. Communication protocols define the rules that both parties must follow during data transmission.
Common Communication Methods
Parallel Communication
All binary data bits are transmitt ...
Posted on Sat, 30 May 2026 00:02:15 +0000 by adityakonda