I'm using the NRF8001 with a Teensy 4.0. I've been able to find a port of the Arduino library for the Teensy here (https://github.com/tato123/nrf8001_arm_support)
I'm trying to send a bunch of data in 20 byte chunks to my android phone very quickly. I've got a function called sendData that does this:
void sendData(uint8_t *buff, int buff_len)
{
if (lib_aci_is_pipe_available(&aci_state, PIPE_UART_OVER_BTLE_UART_TX_TX))
{
if (!lib_aci_send_data(PIPE_UART_OVER_BTLE_UART_TX_TX, buff, buff_len))
{
Serial.println(F("Serial input dropped"));
}
else
{
Serial.println("Sent Data");
}
}
}
In my Teensy loop I do this:
uint8_t gB[20];
uint8_t *gPtr = gB;
uint8_t altimeterBuffer[20];
uint8_t *altimeterPtr = altimeterBuffer;
uint8_t YPRBuffer[20];
uint8_t *YPRPtr = YPRBuffer;
uint8_t ABuffer[20];
uint8_t *APtr = ABuffer;
int i = 0;
String joinedg;
String joinedB;
String joinedYPR;
String joinedA;
void loop()
{
//Process any ACI commands or events
aci_loop();
//buzzerIdle();
if (IMUChrono.hasPassed(20))
{
updateIMU();
updateAltimeter();
}
if (btleChrono.hasPassed(50) && btle_connected)
{
btleChrono.restart();
joinedg = "G " + (String)(int)x_gyro + " " + (String)(int)y_gyro + " " + (String)(int)z_gyro;
joinedg.getBytes(gB, 20);
sendData(gPtr, 20);
delay(100);
joinedB = "B " + (String)altimeter_alt_rel;
joinedB.getBytes(altimeterBuffer, 20);
sendData(altimeterPtr, 20);
delay(100);
joinedYPR = "O " + (String)(int)yaw + " " + (String)(int)pitch + " " + (String)(int)roll;
joinedYPR.getBytes(YPRBuffer, 20);
sendData(YPRPtr, 20);
delay(100);
joinedA = "A " + (String)(int)x_accel + " " + (String)(int)y_accel + " " + (String)(int)z_accel;
joinedA.getBytes(ABuffer, 20);
sendData(APtr, 20);
delay(100);
}
}
When I do this, the NRF8001 sometimes doesn't send the commands and complains about not having enough credits. Is there anything in the codebase I can do to make it work faster without dropping sends?
