#include <SPI.h>

const uint32_t CS_PIN = D10; // Adapt to your wiring

void setup() 
{
   uint8_t masqueGauch = 0x01; // Left triangle (near module)
  uint8_t masqueDroi;       // Right triangle (far module)
    SPI.begin();
    pinMode(CS_PIN, OUTPUT);
    digitalWrite(CS_PIN, HIGH);

    SPI.beginTransaction(SPISettings(10000000, MSBFIRST, SPI_MODE0));
    Serial.begin(115200);
    Serial.println("Boot");

      for (int ligne = 1; ligne <= 8; ligne++) 
    {
        masqueDroi = masqueGauch << (8 - ligne);

        uint16_t trame1 = (ligne << 8) | masqueGauch;  
        uint16_t trame2 = (ligne << 8) | masqueDroi; 
        digitalWrite(CS_PIN, LOW);
        SPI.transfer16(trame2);
        SPI.transfer16(trame1);
        digitalWrite(CS_PIN, HIGH);

       
        Serial.print("Ligne ");
        Serial.print(ligne);
        Serial.print(masqueGauch, HEX);
        Serial.println(masqueDroi, HEX);

        
        masqueGauch = (masqueGauch << 1) | 0x01; //multiplier par 2 et ajouter 1
    }

    SPI.endTransaction();
}

void loop() 
{
    // Nothing to do repeatedly
    delay(100);
}