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add blockErase4K() & read example

This commit is contained in:
Felix Rusu 2021-09-15 12:55:00 -04:00
parent c733c385d4
commit 4c49258506
1 changed files with 37 additions and 14 deletions
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49
examples/SPIFlash_ReadWrite/SPIFlash_ReadWrite.ino
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@ -2,14 +2,17 @@
// This sketch is an example of using the SPIFlash library with a Moteino
// that has an onboard SPI Flash chip. This sketch listens to a few serial commands
// Hence type the following commands to interact with the SPI flash memory array:
// - 'd' dumps the first 256bytes of the flash chip to screen
// - 'e' erases the entire memory chip
// - 'i' print manufacturer/device ID
// - [0-9] writes a random byte to addresses [0-9] (either 0xAA or 0xBB)
//'c' - read flash chip's deviceID 10 times to ensure chip is present
//'d' - dump first 256 bytes on the chip
//'e' - erase entire flash chip
//'E' - erase last 4K block in flash chip
//'D' - dump first 256 bytes in the last 4K block
//'i' - read deviceID
//'0'-'9' - write 0xaa/0xbb bytes at addresses 0..9, 520192..520447
// Get the SPIFlash library from here: https://github.com/LowPowerLab/SPIFlash
// Note: if other SPI devices are present, ensure their CS pins are pulled up or set HIGH
// **********************************************************************************
// (C) 2020 Felix Rusu, LowPowerLab.com
// (C) 2021 Felix Rusu, LowPowerLab.com
// Library and code by Felix Rusu - felix@lowpowerlab.com
// **********************************************************************************
// License
@ -81,7 +84,10 @@ void setup(){
Serial.println("'c' - read flash chip's deviceID 10 times to ensure chip is present");
Serial.println("'d' - dump first 256 bytes on the chip");
Serial.println("'e' - erase entire flash chip");
Serial.println("'E' - erase last 4K block in flash chip");
Serial.println("'D' - dump first 256 bytes in the last 4K block");
Serial.println("'i' - read deviceID");
Serial.println("'0'-'9' - write 0xaa/0xbb bytes at addresses 0..9, 520192..520447");
Serial.println("************************\n");
delay(1000);
}
@ -91,16 +97,26 @@ void loop(){
// ie: display first 256 bytes in FLASH, erase chip, write bytes at first 10 positions, etc
if (Serial.available() > 0) {
input = Serial.read();
if (input == 'd') //d=dump flash area
{
Serial.println("Flash content:");
if (input == 'd') { //d=dump flash area
Serial.println("Flash content (256 bytes, starting address 0):");
int counter = 0;
while(counter<=256){
Serial.print(flash.readByte(counter++), HEX);
Serial.print('.');
while(counter<256){
Serial.print(flash.readByte(counter), HEX);
counter++;
if (counter%16 == 0) Serial.println(); else Serial.print('.');
}
Serial.println();
}
else if (input == 'D') { //d=dump flash area @ last 4K block
Serial.println("Flash content (256bytes, starting address 520192):");
uint32_t counter = 520192;
while(counter<520192+256){
Serial.print(flash.readByte(counter), HEX);
counter++;
if (counter%16 == 0) Serial.println(); else Serial.print('.');
}
Serial.println();
}
else if (input == 'c') {
@ -126,6 +142,13 @@ void loop(){
while(flash.busy());
Serial.println("DONE");
}
else if (input == 'E')
{
Serial.print("Erasing last 4K block @520192 ... ");
flash.blockErase4K(520192);
while(flash.busy());
Serial.println("DONE");
}
else if (input == 'i')
{
Serial.print("DeviceID: ");
@ -135,12 +158,12 @@ void loop(){
{
Serial.print("\nWriteByte("); Serial.print(input); Serial.print(")");
flash.writeByte(input-48, millis()%2 ? 0xaa : 0xbb);
flash.writeByte(input-48+520192, millis()%2 ? 0xaa : 0xbb);
}
}
// Periodically blink the onboard LED while listening for serial commands
if ((int)(millis()/500) > lastPeriod)
{
if ((int)(millis()/500) > lastPeriod) {
lastPeriod++;
digitalWrite(LED_BUILTIN, lastPeriod%2);
}