RPdenBoer
commented
3 months ago This seems to work for me. Using standard SD library and https://github.com/sandeepmistry/arduino-LoRa.git on LoRa32 V2.1_1.6 devboard. SD and LoRa libraries have different ways of passing in the SPI bus you want to use; see comments.
#include <Arduino.h>
#include <SPI.h>
#include <LoRa.h>
#include <SD.h>
// Define pins for SD card
#define SD_SCK 14
#define SD_MISO 2
#define SD_MOSI 15
#define SD_CS 13
// Define pins for LoRa
#define LORA_SCK 5
#define LORA_MISO 19
#define LORA_MOSI 27
#define LORA_CS 18
#define LORA_RST 23
#define LORA_IRQ 26
// Define SPI buses (can be swapped)
SPIClass spiSD(VSPI);
SPIClass spiLoRa(HSPI);
// Init flags
bool sdInitialized = false;
bool loraInitialized = false;
void setup() {
Serial.begin(115200);
// Initialize SD card SPI
spiSD.begin(SD_SCK, SD_MISO, SD_MOSI, SD_CS);
// Pass in SD-SPI-bus object here as second argument
if (!SD.begin(SD_CS, spiSD)) {
Serial.println("SD Card Mount Failed");
} else {
Serial.println("SD Card initialized");
sdInitialized = true;
}
//Initialize LoRa SPI
spiLoRa.begin(LORA_SCK, LORA_MISO, LORA_MOSI, LORA_CS);
LoRa.setPins(LORA_CS, LORA_RST, LORA_IRQ); // Set LoRa pins
// Pass in LoRa-SPI-bus object here as single argument
LoRa.setSPI(spiLoRa);
if (!LoRa.begin(915E6)) { // Use your frequency
Serial.println("Starting LoRa failed!");
} else {
Serial.println("LoRa initialized");
loraInitialized = true;
}
}
void loop() {
// Example: Write data to SD card
if (sdInitialized) {
File file = SD.open("/test.txt", FILE_WRITE);
if (file) {
file.println("Hello from SD card");
file.close();
Serial.println("Data written to SD card");
} else {
Serial.println("Failed to open file for writing");
}
}
// Example: Send data via LoRa
if (loraInitialized) {
LoRa.beginPacket();
LoRa.print("Hello from LoRa");
LoRa.endPacket();
Serial.println("Data sent via LoRa");
}
delay(2000);
}
F5OPV
Hello everybody, Is there any way to get SPI LORA bus and SPI SDCARD bus working simultaneously with 2 SPI instances?