RF solutions zetaplus SPI example

Projects Networking, Protocols, and Devices
1

Has anyone used one of these modules on the SPI ?

Looking for some basic TX/Rx example code to get me started !

There are various libraries for Arduino (e.g Radiohead looks promising ) anyone ?

( RF solutions only supply UART example , which is fine and describes data packets etc) , but unsure how to get started with SPI on this ( RF solutions do not supply a SPI example, but I am writting to them )

2

which specific Zetaplus module? give a link
what host microcontroller are you planning to use?

3

This one

Zetaplus

And a ESP32-S2- WROOM .

4

which specific ESP32-S2 module?
maybe worth running esp32-spi-communication which will display the default SPI pins
I don't have a ESP32-S2 but my ESP32-S3-DevKitC-1 displays

MOSI: 11
MISO: 13
SCK: 12
SS: 10

the esp32-s2-devkitc-1/user_guide shows

image
image536×163 30.7 KB

which appears to agree with my readings from the ESP32-S3-DevKitC-1

5

It’s not a module but the bare chip
With the part number I showed .
The pin outs are not the issue , demo code is !!

6

probably worth trying the UART interface first as it is probably the simplest - see ZETAPLUS-Example-Instructions-(UART)
this is a test of Serial1 for the ESP32-S3 but may help with ESP32-S2

// ESP32-S3 DevkitC-1  Serial1 test - for loopback test connect pin GPIO17 U1TXD to pin GPIO18 U1RXD"
// ss https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/_images/ESP32-S3_DevKitC-1_pinlayout_v1.1.jpg

#define RXD1 18
#define TXD1 17

void setup() {
  // initialize both serial ports:
  Serial.begin(115200);
  Serial1.begin(9600, SERIAL_8N1, RXD1, TXD1);
  Serial.println();
  Serial.println("\n\nESP32-S3 DevkitC-1 serial1  test pin GPIO17 U1TXD pin GPIO18 U1RXD");
  Serial.write("   for loopback test connect pin GPIO17 U1TXD to pin GPIO18 U1RXD\n");
}

void loop() {
  // read from port 1, send to port 0:
  if (Serial1.available()) {
    int inByte = Serial1.read();
    Serial.write(inByte);
  }

  // read from port 0, send to port 1:
  if (Serial.available()) {
    int inByte = Serial.read();
    //Serial.write(inByte);
    Serial1.write(inByte);
  }
}
7

Yes , I’ve had the UART working , I want to use the SPI , mainly as the Zetaplus interrupt line is useful for waking the processor .