Dear Community,
I use an ESP32 as MCU, MC3364 and MC33771B
I program the ESP32 on the Arduino IDE. For receiving the message I use the library #include <ESP32SPISlave.h> from GitHub - hideakitai/ESP32SPISlave: SPI Slave library for ESP32 .
i have used the example code "queue_multiple_transactions_and_poll_all_results_slave" as a template and want to output the received data.
I have the problem that my code only outputs the echo above the serial monitor but not the actual response from the MC33771B.
I measure and see on the oscilloscope that both are received.
my code to receive:
if (slave.hasTransactionsCompletedAndAllResultsHandled()) {
Serial.println("initialize rx buffers");
memset(rx_buf, 0, Rbuffer_size);
slave.queue(NULL, rx_buf, Rbuffer_size);
slave.trigger();
// Serial.println("wait for the completion of the queued transactions...");
}
// if all transactions are completed and all results are ready, handle results
if (slave.hasTransactionsCompletedAndAllResultsReady(QUEUE_SIZE)) {
// get received bytes for all transactions
const std::vector<size_t> received_bytes = slave.numBytesReceivedAll();
Serial.println("Received Data:");
for (size_t i = 0; i < Rbuffer_size; ++i) {
Serial.print("0x");
if (rx_buf[i] < 0x10) {
Serial.print("0");
}
Serial.print(rx_buf[i], HEX);
Serial.print(" ");
}
Serial.println();
memset(rx_buf, 0, Rbuffer_size);
}
