Yes, you can specify the CS pin so it does it automatically.
I just noticed that you posted in the Arduino section, I only use ESP32-IDF. In IDF you can specify the CS pin so it does it for you. Did a little googling and found this.
Code: Select all
#include <SPI.h>
#define HSPI_MISO 12
#define HSPI_MOSI 13
#define HSPI_SCLK 14
#define HSPI_CS 15
static const int spiClk = 240000000; // 1 MHz
SPIClass * hspi = NULL;
char buff[]="Hello Slave\n";
//byte buff[] = {0xAA, 0xBB, 0xAA, 0x01,
0x89, 0xAB, 0xCD, 0xEF};
void setup() {
Serial.begin(9600);
hspi = new SPIClass(HSPI);
hspi->begin();
hspi->begin(HSPI_SCLK, HSPI_MISO, HSPI_MOSI, HSPI_CS); //SCLK, MISO, MOSI, SS
pinMode(HSPI_CS, OUTPUT); //HSPI SS
}
void loop() {
for(int i=0; i<sizeof buff; i++)
{
SPI.transfer(buff[i]);
Serial.println(buff[i]);
}
delay(1000);
}
