#include
#include
#include
#define led 2
char str[32];
uint8_t status = 0;
uint8_t buf[32] = {0};
bool flag = false;
void spi_rx(uint8_t * data, size_t len) {
for(uint8_t i = 0; i < len ; i++) {
buf[i] = data[i];
}
flag = true;
digitalWrite(led, status);
status = !status;
}
void setup() {
// put your setup code here, to run once:
Serial.begin(74880);
pinMode(led, OUTPUT);
pinMode(16, INPUT);
SPISlave.begin();
SPISlave.onData(&spi_rx);
}
void loop() {
// put your main code here, to run repeatedly:
if(flag) {
flag = false;
snprintf(str, sizeof(str), "%s", (char *)buf);
Serial.println(str);
}
}