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- #include <SPI.h>
- void setup() {
- Serial.begin(115200); //set baud rate to 115200 for usart
- digitalWrite(SS, HIGH); // disable Slave Select
- SPI.begin();
- SPI.setClockDivider(SPI_CLOCK_DIV8);//divide the clock by 8
- }
- void loop() {
- char c;
- digitalWrite(SS, LOW); // enable Slave Select
- // send test string
- for (const char * p = "Hello, world!\r" ; c = *p; p++) {
- SPI.transfer (c);
- Serial.print(c);
- }
- digitalWrite(SS, HIGH); // disable Slave Select
- delay(2000);
- }
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