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Firmware for the Sinara 8451 Thermostat

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README.md

Firmware for the Sinara 8451 Thermostat

Building

Debian-based systems (tested on Ubuntu 19.10)

install git, clone this repository
install rustup

rustup toolchain install nightly
rustup update
rustup target add thumbv7em-none-eabihf --toolchain nightly
rustup default nightly
cargo build --release

The resulting ELF file will be located under target/thumbv7em-none-eabihf/release/thermostat

Network

Connecting

Ethernet, IP: 192.168.1.26/24

Use netcat to connect to port 23/tcp (telnet)

nc -vv 192.168.1.26 23

telnet clients send binary data after connect. Enter \n once to invalidate the first line of input.

Reading ADC input

Set report mode to on for a continuous stream of input data.

The scope of this setting is per TCP session.

Commands

Syntax	Function
`report`	Show current input
`report mode`	Show current report mode
`report mode <off/on>`	Set report mode
`pwm`	Show current PWM settings
`pwm <0/1> max_i_pos <ratio>`	Set PWM duty cycle for max_i_pos to ampere
`pwm <0/1> max_i_neg <ratio>`	Set PWM duty cycle for max_i_neg to ampere
`pwm <0/1> max_v <ratio>`	Set PWM duty cycle for max_v to volt
`pwm <0/1> <volts>`	Disengage PID, set i_set DAC to ampere
`pwm <0/1> pid`	Set PWM to be controlled by PID
`center <0/1> <volts>`	Set the MAX1968 0A-centerpoint to volts
`center <0/1> vref`	Set the MAX1968 0A-centerpoint to measure from VREF
`pid`	Show PID configuration
`pid <0/1> target <value>`	Set the PID controller target
`pid <0/1> kp <value>`	Set proportional gain
`pid <0/1> ki <value>`	Set integral gain
`pid <0/1> kd <value>`	Set differential gain
`pid <0/1> output_min <value>`	Set mininum output
`pid <0/1> output_max <value>`	Set maximum output
`pid <0/1> integral_min <value>`	Set integral lower bound
`pid <0/1> integral_max <value>`	Set integral upper bound
`s-h`	Show Steinhart-Hart equation parameters
`s-h <0/1> <t/b/r0> <value>`	Set Steinhart-Hart parameter for a channel
`postfilter <0/1> rate <rate>`	Set postfilter output data rate