Does it support SPI?

Is anyone having trouble getting serial comms back from the Arduino into the Edison, on the standard UART1?

I can send to the Arduino fine, but don't get anything back. Only exception is when I plug an FTDI adaptor into the Arduino while monitoring on the Edison, I immediately get one 0x00 (NUL), but that's it.

I'm running a Node.JS program on the latest Yocto-based image, and using MRAA to set up the UART. But even reading direct to the shell doesn't seem to receive anything.

I get the feeling I'm missing something obvious...

This block (and the UART block) offers the possibility to switch between the Edison UART1 and UART2. However, I have not found a clear answer to how to enable UART2 which is used by default by the console. The question has been asked on the Intel forum where the correct answer suggests to reproduce what is being done on the Edison Arduino breakout firmware. However, this approach relies on the presence of a /etc/inittab file that cannot be found in my Edison installation. So what would be the recipe to unleash this capability in the Sparkfun blocks?

EDIT: After some research, I have been able to find a crude way to disable the console on UART2, thanks to this post

FIRST MAKE SURE THAT YOU HAVE ACCESS TO THE CONSOLE WIRELESSLY THROUGH SSH, as you will need this access to reattach the console to UART2 later on if you wish. Open an SSH session and disable the console with:

fw_setenv bootargs_console

then reboot

shutdown -r now

To re-attach: - Open an SSH session and enable the console with

fw_setenv bootargs_console console=ttyMFD2 earlyprintk=ttyMFD2,keep

then reboot.

This could surely be automated the same way as in the Edison Arduino firmware.

Where is the schematic of this board at ?

Does anyone have problems with reading analog values using Edison and the Arduino block after power on/off?

I have a stack with Edison/Arduino/Base/Battery: sketch reads analog value from the Arduino block and blink a light if the reading is greater than 0, or blink another one if it is less than 0.

All works fine if I start the system with USB connected loading the sketch. I can disconnect the USB and the system keeps running OK.

However, if I power off/on the system using the battery switch, the analog reading is zero, until I reconnect and disconnect the USB again, and starts working again.

Any help would be appreciated

The

I have a question: I have a battery block. Does the battery block power this block so I don't have to be tethered?

Dave

I too am having problems with reading UART data from this board to the edison. I can read and write from and to the edison to a terminal via UART. I can read and write from the Arduino via the FTDI, but I cannot read data from the Arduino via the stacked connector that I assume connects to 0 and 1 on the Arduino.

My Arduino code is:

void setup()
{ // Open serial communications and wait for port to open: Serial.begin(9600);

}

void loop() // run over and over {

if (Serial.available()) Serial.write(123); }

My edison code is:

import serial import time

serialport = '/dev/ttyMFD1'

print 'open ' + serialport ser = serial.Serial(serialport, 9600)

print ser.portstr # check which port was really used counter = 0 while True: try: if ser.isOpen():
print 'begin' data = ser.read() print 'reading: ' + str(data)

         time.sleep(1)
    except (KeyboardInterrupt, SystemExit):
         ser.close()
         raise

print "done"

Console output:

root@kextrel:~/pythoncode# python uartread.py open /dev/ttyMFD1 /dev/ttyMFD1 begin

Any help appreciated

For those having problems:

115200 DOES NOT WORK - I don't know if it's the Edison or the Arduino that won't work at that speed. Use 9600

echo -n 130 > /sys/class/gpio/export //may not need, may already be exported

echo -n 131 > /sys/class/gpio/export //may not need, may already be exported

echo mode1 > /sys/kernel/debug/gpio_debug/gpio130/current_pinmux // potentially unneeded as well.

echo mode1 > /sys/kernel/debug/gpio_debug/gpio131/current_pinmux // potentially unneeded as well.

echo in > /sys/class/gpio/gpio130/direction

echo out > /sys/class/gpio/gpio131/direction

cat /dev/ttyMFD1

Anyone had any success with this board? The Edison doesn't start up even though the Arduino has power and is running code.

I don't recommend attaching the edison directly to this block, the nuts on the hardware supplied rubs against the reset switch and breaks it off really easy. Needs a bit more clearance....

Is there any tutorial on how to read analog value using this device?

Hi, I will really like to know an approximated date for this item because I have an excellent project idea but it can only be done with this block combine with the Intel Edison. P.S. I hope it's soon (Please :))!!!

How does this board get power? Or are we suppose to provide our own power solution? Like a Battery Block?

Will there be a SPI pin exposed in this Arduino block?

I would also like to see the eagle files for this board please.

Will this be a 3.3 or 5 V Arduino?