#include <SPI.h>
const uint32_t CS_PIN = D10; // 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
uint16_t static data = 0x0055;
SPI.beginTransaction(cfgSPI);
for (uint8_t n_ligne = DIG0; n_ligne < DIG0+8; n_ligne++) {
trame = n_ligne << 8;
data = data^0x00FF;
trame |= data;
digitalWrite(CS_PIN, LOW);
for (uint8_t i = 0; i < 4; i++) {
SPI.transfer16(trame);
}
digitalWrite(CS_PIN, HIGH); // le front montant provoque le verrouillage des données dans le(s) MAX7219
}
SPI.endTransaction();
}
void loop() {
// put your main code here, to run repeatedly:
delay(10); // this speeds up the simulation
}