Thomas Kolb
1cbe0ce410
Prevent deep sleep during BMP280 communication
2022-10-15 21:48:15 +02:00
Thomas Kolb
5c6497fb82
charge_control: block charging if external temperature is too low
2022-10-15 21:44:27 +02:00
Thomas Kolb
d7b8c90cb4
Add new temperature thresholds to flash config
2022-10-15 21:42:46 +02:00
Thomas Kolb
c807acec11
bmp280: add function to check for valid measurements
2022-10-15 21:41:50 +02:00
Thomas Kolb
07dd91ecc2
bmp280: read out via DMA in the background
...
This removes any busy waiting on the I²C from the main loop.
Initialization is still done in a blocking way.
2022-10-15 20:49:31 +02:00
Thomas Kolb
055186180f
Merge branch 'main' into bmp280
2022-10-15 16:43:36 +02:00
Thomas Kolb
3dcf412a02
BMP280: Crude workaround for detecting chip presence
2022-10-08 21:49:28 +02:00
Thomas Kolb
2f0f6a01f2
Initial BMP280 integration
...
This version uses only blocking i2c calls, and long transfers will
probably cause frame loss. Also, if no BMP280 is present, the firmware
will not start up and hang in an endless loop instead.
2022-10-08 20:50:08 +02:00
Thomas Kolb
16619397b1
Added script for flash config upload
2022-09-25 17:35:37 +02:00
Thomas Kolb
481cf6f9f4
Use the new flash config module
2022-09-25 17:24:21 +02:00
Thomas Kolb
4ebb231346
Preparations for dedicated configuration flash page
2022-09-25 15:57:05 +02:00
Thomas Kolb
1e093978f3
config: avoid switching between sleep and active state too often
...
Unfortunately, the offset voltage of the opamp for charge current
measurement breaks measurement at low currents with a small shunt, so at
dusk, when currents become low, it may happen that 0 current is measured
while the battery is still being charged. This would falsely trigger the
transition to sleep state. To improve this situation, we simply keep the
charger active for a longer time.
2022-09-24 16:39:46 +02:00
Thomas Kolb
5528259517
calibration: add development device
2022-09-24 16:28:35 +02:00
Thomas Kolb
2275edb475
Update libopencm3
2022-09-14 21:35:36 +02:00
Thomas Kolb
87ddba7af7
Recalibrate using Voltcraft VC-523SE multimeter
2021-09-19 14:27:39 +02:00
Thomas Kolb
8dd5c8121f
Send error state over RS485
2021-09-19 14:21:00 +02:00
Thomas Kolb
6920c548e9
Tune high-voltage charge time and reset voltage
2021-09-19 14:07:26 +02:00
Thomas Kolb
6ff8918e62
Fixed incorrect state transition due to 0-current glitch
2021-09-19 14:06:24 +02:00
Thomas Kolb
716c158716
Discharging: use averaged values for thresholds
2021-07-10 16:38:47 +02:00
Thomas Kolb
0339b521dd
charge_control: add extra state to fix initial charging
...
Before this change, initial charging ended exactly HOLD_TIME after the
CHARGE_INITIAL state was entered. This was usually not sufficient to
reach the INITIAL_FULL voltage. Now a new state is entered once the
INITIAL_FULL voltage is reached.
2021-07-10 16:29:48 +02:00
Thomas Kolb
d239a947cd
Zero meas_data on startup for consistent behaviour
2021-07-01 21:15:13 +02:00
Thomas Kolb
79fe1113de
charge_control: implement voltage transition
2021-07-01 21:10:13 +02:00
Thomas Kolb
49bd9247e0
Average the measurements
...
The measurement module now provides averaged measurements. These are
used in some places where accuracy is more important than latency (for
example for the temperature limit, where noise triggered the limit too
early).
2021-06-18 23:37:16 +02:00
Thomas Kolb
7ca6104e80
charge_control: refactoring, bug fixes
...
- Moved shared state transition checks to separate function
- Improved behaviour when the battery is full
2021-06-18 20:25:53 +02:00
Thomas Kolb
d9bc181973
Fixed a typo
2021-06-13 14:55:43 +02:00
Thomas Kolb
d94b376f00
Update fxplib (only license and documentation changed)
2021-06-13 14:45:34 +02:00
Thomas Kolb
1ad2456c8b
Added pinout.txt
2021-06-12 18:45:42 +02:00
Thomas Kolb
7bdb5338a4
Added README and LICENSE documents
2021-06-12 18:40:36 +02:00
Thomas Kolb
62b63efba3
charge_control: first state transition wins
2021-06-12 17:07:16 +02:00
Thomas Kolb
add925bba0
Fixed temperature measurement
2021-06-12 16:49:05 +02:00
Thomas Kolb
df3211333e
Properly shut down peripherals before entering deep sleep
...
This is most important for the LEDs and the RS485 interface. If any LED
is on when deep sleep is entered, it will stay on the whole sleep time,
drawing about 10 mA on the 3,3V rail.
The RS485 transceiver must be switched to RX mode, as it consumes about
30 mA from the 5V rail in TX mode.
2021-06-12 16:02:21 +02:00
Thomas Kolb
5ceb014d1b
Disable RS485 driver and systick before deep sleep
...
- The RS485 driver consumes about 150 mW if enabled
- The systick somehow can wake up the CPU from stop mode
2021-06-12 16:02:21 +02:00
Thomas Kolb
189ea810d9
deepsleep: use libopencm3 functions instead of register access
2021-06-12 16:02:21 +02:00
Thomas Kolb
98d0c08ec3
First try to implement deep sleep
...
It sleeps, but never wakes up again. Also it consumes a lot of current
which suspended?!
2021-06-12 16:02:21 +02:00
Thomas Kolb
fa71acfc8e
main.c: remove unused #includes
2021-06-12 01:12:33 +02:00
Thomas Kolb
c76918ae2a
Moved clock setup to separate file
2021-06-11 23:55:10 +02:00
Thomas Kolb
d2a95c4353
charge_control: removed unused code
2021-06-11 23:52:50 +02:00
Thomas Kolb
ed6ac04686
Refactoring: move FSMs to separate functions
2021-06-11 22:51:02 +02:00
Thomas Kolb
c504fb944c
Call charge_control_init()
2021-06-11 22:35:59 +02:00
Thomas Kolb
1ad35dae2b
Print (dis)charge FSM state changes
2021-06-11 22:35:07 +02:00
Thomas Kolb
6b070bbf86
Started implementing real charge control
...
Everything untested so far…
2021-06-07 22:45:17 +02:00
Thomas Kolb
0982f8d7c9
Increase charge pump frequency to 500 Hz
...
This change reduces the voltage drop with higher loads, for example if
both the solar and the load switch are on at the same time.
2021-06-06 15:08:22 +02:00
Thomas Kolb
3e8ebbe201
Fixed "debug" make target
2021-06-06 12:20:58 +02:00
Thomas Kolb
46d3e16104
Make measurement usable
...
- Run ADC Calibration on startup (without calibration, there is a huge
offset error, making the current sensing unusable)
- Added calibration factors which allow to compensate for inaccuracies
in the circuitry (example: 1% tolerance transistors)
- Send measured values via RS485
2021-06-06 12:17:38 +02:00
Thomas Kolb
2ca6c41260
Implemented RS485 driver (TX only)
2021-06-06 12:16:46 +02:00
Thomas Kolb
c01cb4f742
Prepare for analog measurements
2021-06-05 21:20:12 +02:00
Thomas Kolb
6644b29257
Added power switch driver
2021-06-05 16:33:21 +02:00
Thomas Kolb
5764d87a08
Added the charge pump driver
2021-06-05 15:49:29 +02:00
Thomas Kolb
8c317f2904
Initial commit
...
- Set up build with latest libopencm3
- Created basic project structure
- Implement Charlieplexing for the LEDs and a little test sequence
2021-06-05 00:04:36 +02:00
Thomas Kolb