#include <SPI.h>

const uint32_t CS_PIN = D7; // à adapter à votre cablage
const uint16_t DIG0 = 0x01;  // ligne 0


// void setup() {
//   SPISettings cfgSPI(10000000, MSBFIRST, SPI_MODE0);
//   uint16_t trame;
//   Serial.begin(115200);
//   Serial.println("Boot");
//   pinMode(CS_PIN, OUTPUT );
//   // SPI Transaction: sends the contents of buffer, and overwrites it with the received data
//   digitalWrite(CS_PIN, LOW);
//   SPI.beginTransaction(cfgSPI);
//   trame = DIG0 << 8;
//   trame |= 0x55;
//   SPI.transfer16(trame);
//   SPI.transfer16(trame); //Q2
//   // SPI.transfer16(trame);
//   // SPI.transfer16(trame);
//   SPI.endTransaction();
//   digitalWrite(CS_PIN, HIGH);  // le front montant provoque le verrouillage des données dans le(s) MAX7219
// }

void setup() {
  SPISettings cfgSPI(10000000, MSBFIRST, SPI_MODE0);
  uint16_t trame;
  Serial.begin(115200);
  Serial.println("Boot");
  pinMode(CS_PIN, OUTPUT );
  // SPI Transaction: sends the contents of buffer, and overwrites it with the received data

  for (uint16_t dig = 0x0; dig < 0x9; dig++)  //on fait varier l'octet correspondant aux digits = lignes sur l'afficheur
  {
    digitalWrite(CS_PIN, LOW);
    SPI.beginTransaction(cfgSPI);
    trame = dig << 8;
    trame |= 0xFF;
    SPI.transfer16(trame);
  
    SPI.endTransaction();
    digitalWrite(CS_PIN, HIGH);  // le front montant provoque le verrouillage des données dans le(s) MAX7219
  }


}


void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}