@inkk wrote:
Hi,
I’m new to the forum, so if I’m breaking any rules or missing any pertinent information, please let me know, and I will address it as soon as I can.
Hardware/Software:
- CubeOrange
- ADS1115 analog to digital converter
- Analog potentiometer
- WSL2 + VSCode for editing and compiling. (if it matters)
Goal:
I am trying to create an angle of attack sensor that consists of a potentiometer connected to a 16-bit A2D (ADS1115) that connects to the Pixhawk via the I2C2 port.What I’ve done:
I’ve added an AoA sensor class to the libraries/ directory and had it call the init method of the ADS1115 class. All it’s doing is grabbing the I2C device and initiating the periodic callback of AP_ADC_ADS1115::_update. --All this compiles and loads onto the Pixhawk without an issue.The Issues:
The problem occurs when it runs the periodic AP_ADC_ADS1115::_update method. Within update, the AP_ADC_ADS1115::read_registers method fails upon calling of AP_HAL::Device::transfer function and I cannot for the life of me figure out why. This is where I cannot find any information to assist in my problem. Any direction would be great.I should probably add:
- I have verified that I can talk to the A2D by using the I2C ports on a Raspberry Pi, so the board isn’t DOA.
- I’ve gone through the very general sensor driver page. It doesn’t provide much help.
- I’ve read through this AoA sensor addition with different hardware. I actually used this one as a baseline.
- I’ve loaded the sensor driver onto two different Pixhawks, both fail the same way.
- I even hooked the SCL/SDA lines to a scope to verify nothing was being written to the port. Spoiler: something was written to the port, but not what I was trying to send it.
I appreciate your time,
John
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Participants: 2