44 lines
1.4 KiB
Arduino
44 lines
1.4 KiB
Arduino
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// Blink LED_BUILTIN slower if the FLASH chip is detected, and faster if there is no FLASH chip detected
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// Code by Felix Rusu, LowPowerLab.com
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#include <SPIFlash.h> //https://github.com/lowpowerlab/spiflash
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#include <SPI.h>
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#define SERIAL_ENABLE
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#define BLINK_FAST_DELAY 100
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#define BLINK_SLOW_DELAY 500
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SPIFlash flash(SS_FLASHMEM, 0xEF30); //EF40 for 16mbit windbond chip
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int LEDTIME = 500;
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// the setup routine runs once when you press reset:
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void setup() {
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#ifdef SERIAL_ENABLE
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Serial.begin(115200);
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delay(4000); //wait a bit until SerialMonitor can be opened
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#endif
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pinMode(LED_BUILTIN, OUTPUT);
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if (flash.initialize()) {
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Serial.println("SPI Flash Init OK!");
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LEDTIME = BLINK_SLOW_DELAY;
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}
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else
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{
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Serial.println("SPI Flash Init FAIL! (is chip soldered?)");
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LEDTIME = BLINK_FAST_DELAY;
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}
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}
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// the loop routine runs over and over again forever:
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void loop() {
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word jedecid = flash.readDeviceId();
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#ifdef SERIAL_ENABLE
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Serial.print("FLASH DeviceID: ");
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Serial.println(jedecid, HEX);
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Serial.print("FLASH init "); Serial.println(flash.initialize() ? "OK" : "FAIL");
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#endif
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digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
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delay(LEDTIME); // wait for a second
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digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
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delay(LEDTIME); // wait for a second
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}
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