Dependancies
Reading and writing a struct to the flash
Reading and writing a struct to the non-volatile flash memory.
Before starting
🌳 An outdoor LoRa-GPS tracker with an E-Ink display 🔑
Reading and writing a struct to the non-volatile flash memory.
Dependancies
Write a set of config to the flash storage and read it back.
struct Config {
byte localAddress;
byte destinationAddress;
char eink_version[4];
char hardware_model[2];
};
ls -al /dev/cu.usbmodem and arduino-cli board list. Run make to compile and upload the code to the board.
Serial output from the firmware.
#include <FlashStorage.h>
struct Config {
byte localAddress;
byte destinationAddress;
char eink_version[4];
char hardware_model[2];
};
FlashStorage(oak_flash_store, Config);
void setup() {
SerialUSB.begin(9600);
while (!SerialUSB) {}
SerialUSB.println("Reading and writing a struct into the flash...");
Config oak_config = {0xBB, 0xAA, "1.0", "B"};
Config oak_config_read;
oak_flash_store.write(oak_config);
oak_config_read = oak_flash_store.read();
SerialUSB.println("\nWrite Oak config");
SerialUSB.println("\nRead Oak config: ");
SerialUSB.println(" localAddress: "
+ String(oak_config_read.localAddress, HEX));
SerialUSB.println(" destinationAddress: "
+ String(oak_config_read.destinationAddress, HEX));
SerialUSB.println(" eink_version: "
+ String(oak_config_read.eink_version));
SerialUSB.println(" hardware_model: "
+ String(oak_config_read.hardware_model));
}
void loop() { }BOARD?=hutscape:samd:oak
PORT := $(shell ls /dev/cu.usbmodem*)
BUILD=build
.PHONY: default lint all flash clean
default: lint all flash clean
lint:
cpplint --extensions=ino --filter=-legal/copyright *.ino
all:
arduino-cli compile --fqbn $(BOARD) --output-dir $(BUILD) ./
flash:
arduino-cli upload -p $(PORT) --fqbn $(BOARD) --input-dir $(BUILD) --verbose
clean:
rm -r build