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chatGPT에 물어 보았다 ( chat.openai.com )
arduino로 spiflash 128MB 전영역을 쓰고 읽어서 비교하는 프로그램 작성
spiFlash.ino
#include <SPI.h>
const int chipSelect = 10;
const int bufferSize = 256;
byte buffer[bufferSize];
void setup() {
Serial.begin(115200);
SPI.begin();
pinMode(chipSelect, OUTPUT);
// Fill the buffer with some test data
for (int i = 0; i < bufferSize; i++) {
buffer[i] = i;
}
// Write the buffer to the flash memory
for (int address = 0; address < 128 * 1024 * 1024; address += bufferSize) {
writeFlash(address, buffer, bufferSize);
}
}
void loop() {
// Read the flash memory and compare it to the buffer
for (int address = 0; address < 128 * 1024 * 1024; address += bufferSize) {
readFlash(address, buffer, bufferSize);
for (int i = 0; i < bufferSize; i++) {
if (buffer[i] != (address + i) % 256) {
Serial.println("Mismatch at address " + String(address + i, HEX) + ": expected " + String(buffer[i], HEX) + " but got " + String((address + i) % 256, HEX));
while (true);
}
}
}
Serial.println("Verification complete");
}
void writeFlash(int address, byte* data, int length) {
digitalWrite(chipSelect, LOW);
SPI.transfer(0x06); // Write enable
digitalWrite(chipSelect, HIGH);
digitalWrite(chipSelect, LOW);
SPI.transfer(0x02); // Write instruction
SPI.transfer((address >> 16) & 0xff);
SPI.transfer((address >> 8) & 0xff);
SPI.transfer(address & 0xff);
for (int i = 0; i < length; i++) {
SPI.transfer(data[i]);
}
digitalWrite(chipSelect, HIGH);
// Wait for the write to complete
digitalWrite(chipSelect, LOW);
SPI.transfer(0x05);
while ((SPI.transfer(0xff) & 0x01) != 0) {
}
digitalWrite(chipSelect, HIGH);
}
void readFlash(int address, byte* data, int length) {
digitalWrite(chipSelect, LOW);
SPI.transfer(0x03); // Read instruction
SPI.transfer((address >> 16) & 0xff);
SPI.transfer((address >> 8) & 0xff);
SPI.transfer(address & 0xff);
for (int i = 0; i < length; i++) {
data[i] = SPI.transfer(0xff);
}
digitalWrite(chipSelect, HIGH);
}
프로그램은 만들어 졌다.
아누이노로 돌려 보면 에러는 없다
하드웨어 구성을 위해 다시 질문 했다
연결하는 핀번호를 알아야 한다. 또 질문
헉!!! 아두이노 UNO 보드가 PC와 연결이 안된다.( 아두이노 UNO 보드 고장 !!)
Leonardo 보드로 교체...
spiFlash의 핀번호도 알아야 한다
그래서 또 질문
핀번호가 아닌 신호이름만 알려 준다
할수 없이 데이터 시트 확인
| Arduino Leonardo | W25N01GVxxIG/IT | |||
| /CS | 10 | 1 | /CS | |
| DO | 12 | 2 | DO | |
| GND | GND | 4 | GND | |
| MOSI | 11 | 5 | DI | |
| SCK | 13 | 6 | CLK | |
| 5V | VCC | 8 | VCC | |
코드 약간 수정
//
// SPI Flash test program
//
// arduino로 spiflash 128MB 전영역을 쓰고 읽어서 비교하는 프로그램
//
// Board : Arduino UNO
// Device : SPI Flash WinBoand - W25N01GVZEIG 8-pad WSON 8x6-mm
//
// PAD NO. PAD NAME I/O FUNCTION
// 1 /CS I Chip Select Input
// 2 DO (IO1) I/O Data Output (Data Input Output 1)(1)
// 3 /WP (IO2) I/O Write Protect Input ( Data Input Output 2)(2)
// 4 GND Ground
// 5 DI (IO0) I/O Data Input (Data Input Output 0)(1)
// 6 CLK I Serial Clock Input
// 7 /HOLD (IO3) I/O Hold Input (Data Input Output 3)(2)
// 8 VCC Power Supply
//
//
// Standard SPI : CLK, /CS, DI, DO, /WP, /Hold
//
// Dual SPI : Dual SPI: CLK, /CS, IO0, IO1, /WP, /Hold
//
// Quad SPI : CLK, /CS, IO0, IO1, IO2, IO3
//
//
#include <SPI.h>
const int chipSelect = 10;
const int bufferSize = 256;
byte buffer[bufferSize];
unsigned long k=0; // 추가
void setup() {
Serial.begin(115200);
SPI.begin();
pinMode(chipSelect, OUTPUT);
}
void loop() {
// Fill the buffer with some test data
for (int i = 0; i < bufferSize; i++) {
buffer[i] = i;
}
// Write the buffer to the flash memory
for (int address = 0; address < 128 * 1024 * 1024; address += bufferSize) {
writeFlash(address, buffer, bufferSize);
}
// Read the flash memory and compare it to the buffer
for (int address = 0; address < 128 * 1024 * 1024; address += bufferSize) {
readFlash(address, buffer, bufferSize);
for (int i = 0; i < bufferSize; i++) {
if (buffer[i] != (address + i) % 256) {
Serial.println("Mismatch at address " + String(address + i, HEX) + ": expected " + String(buffer[i], HEX) + " but got " + String((address + i) % 256, HEX));
while (true);
}
}
}
Serial.print(k++); // 추가
Serial.println(" Verification complete");
}
void writeFlash(int address, byte* data, int length) {
digitalWrite(chipSelect, LOW);
SPI.transfer(0x06); // Write enable
digitalWrite(chipSelect, HIGH);
digitalWrite(chipSelect, LOW);
SPI.transfer(0x02); // Write instruction
SPI.transfer((address >> 16) & 0xff);
SPI.transfer((address >> 8) & 0xff);
SPI.transfer(address & 0xff);
for (int i = 0; i < length; i++) {
SPI.transfer(data[i]);
}
digitalWrite(chipSelect, HIGH);
// Wait for the write to complete
digitalWrite(chipSelect, LOW);
SPI.transfer(0x05);
while ((SPI.transfer(0xff) & 0x01) != 0) {
}
digitalWrite(chipSelect, HIGH);
}
void readFlash(int address, byte* data, int length) {
digitalWrite(chipSelect, LOW);
SPI.transfer(0x03); // Read instruction
SPI.transfer((address >> 16) & 0xff);
SPI.transfer((address >> 8) & 0xff);
SPI.transfer(address & 0xff);
for (int i = 0; i < length; i++) {
data[i] = SPI.transfer(0xff);
}
digitalWrite(chipSelect, HIGH);
}
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