Hello Sir,
here i am using imx8mm mini evk board and ESP32 board for bluetooth base data transmission.
i want to do communication between A53 linux and esp32 using bluetooth.
on A53 linux executing below commands
void Bluetooth_Init(Void)
{
system("modprobe moal mod_para=nxp/wifi_mod_para.conf"); //before enabling bluetooth need to Enable WIFI first
delay(1000);
system("hciattach /dev/ttymxc0 any 115200 flow");//Set up Baud Rate with 115200 for bluetooth
delay(500);
system("hciconfig hci0 up");// basic configuration for the bluetooth
delay(500);
system("hciconfig");// basic configuration for the bluetooth
delay(500);
system("rfcomm bind rfcomm3 7C:9E:BD:35:F2:7A");//MAC Address of ESP32 Device
delay(500);
}
after this executing below command for data trnasmission from A53 to ESP32
while(1)
{
system( "echo -n -e 4 > /dev/rfcomm3");
delay(5000);
system( "echo -n -e 3 > /dev/rfcomm3");
delay(5000);
system( "echo -n -e 2 > /dev/rfcomm3");
delay(5000);
}
after this getting error /dev/rfcomm3 cannot allocate memory
i have no idea, why getting this error
is there any missing in above steps
Please suggest why getting error /dev/rfcomm3 cannot allocate memory
