SPI接口主要应用在EEPROM,FLASH,实时时钟,AD转换器,还有数字信号处理器和数字信号解码器之间。SPI,是一种高速的,全双工,同步的通信总线,并且在芯片的管脚上只占用四根线,节约了芯片的管脚,同时为PCB的布局上节省空间,提供方便,正是出于这种简单易用的特性,现在越来越多的芯片集成了这种通信协议,STM32也有SPI接口。
首先说明一点,capture strobe = latch = read = sample,都是表示数据采样,数据有效的时刻。相位,对应着数据采样是在第几个边沿(edge),是第一个边沿还是第二个边沿,0对应着第一个边沿,1对应着第二个边沿。 对于: CPHA=0,表示第一个边沿: 对于CPOL=0,idle时候的是低电平,第一个边沿就是从低变到高,所以是...
SPI接口主要应用在EEPROM,FLASH,实时时钟,AD转换器,还有数字信号处理器和数字信号解码器之间。SPI,是一种高速的,全双工,同步的通信总线,并且在芯片的管脚上只占用四根线,节约了芯片的管脚,同时为PCB的布局上节省空间,提供方便,正是出于这种简单易用的特性,现在越来越多的芯片集成了这种通信协议,STM32也有SPI接口。
unsigned char write[4096]; unsigned char read[4096]; void N25Qxx_Test(void) { uint32_t i = 0; for(i = 0;i<sizeof(write);i++) { write[i]=i; } printf("write data:\r\n"); for(i = 0;i<sizeof(write);i++) { printf("%d ",write[i]); } printf("\r\n"); printf(...
[url=home.php?mod=space&uid=247401]@brief[/url] This sample code shows how to use STM32...
= MI_OK) continue;status = MFRC522_Write(1, idData);if (status == MI_OK){printf("aaaa...
问STM32 + SD卡(FATFS和SPI) +物理连接+ FR_NOT_READYEN硬件包含: 一块STM32F103ZET6系统板、一...
Hello, I using STM32F103RB with attached SPI FLASH (M25P16). I need download Programm code into SPI FASH. There are Flash Algorithm in Keil for using external FLASH for download Programm Code. I already create FLM file for my FLASH (using Keil example). ...
rcvdat=SPI1_ReadWriteByte(0xFF); /* read data frm rx fifo */return (BYTE)rcvdat;}static ...
This library is for the file operation. To install FAT file systems at SD card and flash. Gives an example to read and write an SD card. arduinofsarduino-librarysd-cardspi-flash UpdatedFeb 5, 2025 C ultraembedded/core_spiflash Sponsor ...