so is there RX, TX, SPI ? (seems only I2C/PWM/GPIO/I2S/CTX/RTX ?)
JaneYu 2015-02-26 17:52:08 23 Views16 Replies so is there RX, TX, SPI ? (seems only I2C/PWM/GPIO/I2S/CTX/RTX ?)
i want the pins map to libmraa for IO Expansion Shield for Intel® Edison so i can control the board with it .can any one help me with this
all the pins (0-13) .
JaneYu Hi, Please check its schematic and Interl Edison MRAA pin map: http://iotdk.intel.com/docs...
For example, schematic shows D13 connecting to GPIO-40, and follow the MRAA table, GPIO 40 maps MRAA pin 37
Hello, I am unable to blink the onboard LED of this board using a simple C/C++ or Python program. I am using the sample Edison programs published by Intel. However, the LED can be blinked using an Arduino sketch. The C/C++ and Python examples use the MRAA library for communicating with the GPIO ports. I tried both GPIO-13 and GPIO-14 ports, but still the LED does not blink. I have the latest firmware and MRAA libraries installed in my Edison.
Is this expansion board supported by the MRAA library? In that case, could you provide some guidance how to blink the onboard LED using a C/C++ program? I am wondering if the GPIO ports of this board are mapped differently in the MRAA library.
Your help is much appreciated.
JaneYu Ok, I figured this out myself. The onboard LED of this board (D13) is connected to GPIO-40, which is mapped to MRAA pin 37. After I changed the program with these information, it was able to blink the LED :)
I'm using this board with a C++ program. When I try to launch my application I get the error:
"terminate called after throwing an instance of 'std::invalid_argument'
what(): Invalid GPIO pin specified"
the weird thing is that it happens only with this board. When I use the Intel Arduino Breakout Board it works fine. Any idea about why this happens?
JaneYu Hi, what is your compiling environment? Arduino or eclipse? It seems that the pin your invoked are not invalid one. Could you check the right name? The I/O expansion shield only provides 14 digital pins in all. If there is no pins connecting to your called one, I guess it will be invalid.
Is the Micro USB OTG port also a Micro AB port like J16 on the Edison Mini-breakout board? Specifically, I need to connect a USB device and have the Edison act as a host. To do this with the Edison Mini-breakout board you connect a Micro USB A connector instead of the typical OTG connector which is Micro USB B. I looked through the schematic and specs but I cannot find a BOM which states the exact connector type for the OTG connector. Any help or info on this would be great.
JaneYu It's Micro USB B, but I often need an adapter, if you want to plug a device like a mouse or a keyboard which as the more common USB -A. Is the Micro B not fitting on the AB? seems that the size of the AB is bigger than the micro B with same connector?
It's now been two weeks since you last said that it would be "next week". What's the truth? Is this item real?
JaneYu 
