Firmware for the Sinara 8451 Thermostat

• Continuous Integration
• Download latest firmware build

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
load	Restore configuration from EEPROM
save	Save configuration to EEPROM
reset	Reset the device