用HHDM600读取SM25QH256的ID的代码
时间: 2023-05-25 10:04:12 浏览: 67
以下是使用HHDM600读取SM25QH256芯片ID的代码:
```
#include <SPI.h>
// Define the pins for the HHDM600 SPI interface
#define HHDM600_SS 10
#define HHDM600_SCK 13
#define HHDM600_MISO 12
#define HHDM600_MOSI 11
// Define the SPI device settings for the SM25QH256 chip
#define SM25QH256_SS 9
#define SM25QH256_SCK HHDM600_SCK
#define SM25QH256_MISO HHDM600_MISO
#define SM25QH256_MOSI HHDM600_MOSI
void setup() {
Serial.begin(9600);
// Initialize the SPI interface for the HHDM600
pinMode(HHDM600_SS, OUTPUT);
digitalWrite(HHDM600_SS, HIGH);
SPI.begin();
SPI.setClockDivider(SPI_CLOCK_DIV2);
SPI.setBitOrder(MSBFIRST);
SPI.setDataMode(SPI_MODE0);
// Initialize the SPI interface for the SM25QH256 chip
pinMode(SM25QH256_SS, OUTPUT);
digitalWrite(SM25QH256_SS, HIGH);
SPI.begin();
SPI.setClockDivider(SPI_CLOCK_DIV2);
SPI.setBitOrder(MSBFIRST);
SPI.setDataMode(SPI_MODE0);
}
void loop() {
// Select the SM25QH256 chip
digitalWrite(SM25QH256_SS, LOW);
delayMicroseconds(10);
// Send the command to read the device ID
SPI.transfer(0x9F);
// Read the device ID
byte id[3];
id[0] = SPI.transfer(0x00);
id[1] = SPI.transfer(0x00);
id[2] = SPI.transfer(0x00);
// Deselect the SM25QH256 chip
digitalWrite(SM25QH256_SS, HIGH);
// Print the device ID
Serial.print("Manufacturer ID: ");
Serial.println(id[0], HEX);
Serial.print("Memory Type: ");
Serial.println(id[1], HEX);
Serial.print("Capacity: ");
Serial.println(id[2], HEX);
delay(1000);
}
```
此代码使用Arduino的SPI库来进行通信。在setup()函数中,初始化HHDM600和SM25QH256的SPI接口。在loop()函数中,首先选择SM25QH256芯片,并发送读取设备ID的命令(0x9F)。然后读取三个字节的ID,并打印到串口监视器。最后,延迟一秒钟,然后重复此过程。注意,在每次读取ID之前,必须选择芯片,读取完毕后取消选择,以确保正确通信。