Test Updating Firmware on the BCM20732S via HCI UART

gistfile1.c

/**
 BCM20732S HCI UART is connected to Serial RX/TX pins on the Arduino Due.
 BCM20732S Reset pin is connected to BLE_RESET_PIN

**/

#include <Arduino.h>  

#define BLE_RESET_PIN 31

#define PACKET_LEN 4

const uint8_t startPacket[] = {0x01, 0x2E, 0xFC, 0x00};
const uint8_t nextPacket[] = {0x01, 0x03, 0x0C, 0x00};

void writeToBle(const uint8_t* packet) {
  
  Serial.write(startPacket, PACKET_LEN);
  
  SerialUSB.print("\nWrite: ");
  SerialUSB.write(startPacket, PACKET_LEN);
  SerialUSB.println(" --");
}

void ble_reset() {

  // reset the BLE
  // (active low)
  pinMode(BLE_RESET_PIN, OUTPUT);
  digitalWrite(BLE_RESET_PIN, LOW); 
  delay(2); // 20uS to reset

  digitalWrite(BLE_RESET_PIN, HIGH); 

  delay(7); // ~5ms to warm up and boot

}

void setup() {
  
  Serial.begin(115200);
  
  SerialUSB.begin(57600);

  ble_reset();

  // wait for serial monitor
  delay(8000);

  writeToBle(startPacket);
}

void loop() {
  
  while(Serial.available()) {
    SerialUSB.write(Serial.read()); 
    
    
    writeToBle(nextPacket);
  }
}