I'm playing with ESP32 SPI mode with this program
#define CSPIN 5
#include <SPI.h>
unsigned char Icount = 0 ;
void setup() {
pinMode( CSPIN, OUTPUT);
SPI.begin(18, 19, 23, 5); // sck, miso, mosi, ss (ss can be any GPIO)
SPI.setFrequency( 10000000 );
}
void loop() {
delay(10);
digitalWrite( CSPIN, HIGH);
SPI.transfer(Icount);
digitalWrite( CSPIN, LOW);
Icount++;
}
This program was set to SPI Clock for 30Mhzm 10Mhz, 5Mhz and 1 Mhz
Then I put my Rigol DS1054Z to check the signal expecting to see a crap unuseful picture, But for my surprise, the pictures are very nice and readable, I would love to see other scopes on the same price range showing the same waveform
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This Rigols instrument is a beast,