Hardware

28.10.2022

22:17 Minutnik eInk Fehler #288: Device No.2 freezes when connected to USB

Could reproduce it also with serno.1.
The disturbtion on VDD is quite high when USB is connected (ca. 24ns breakdown... Maximilian Seesslen

14:35 Minutnik eInk Unterstützung #292 (Erledigt): Power injection pins 3V missing

One additional testpoint for 3V would help to measure power consumtion of MCU side.
Maximilian Seesslen

26.10.2022

14:45 Minutnik eInk Fehler #288: Device No.2 freezes when connected to USB

Is USB power to low?
Maximilian Seesslen

14:40 Minutnik eInk Fehler #291 (Erledigt): ADC Spannungsteiler ist permanent

Route the ground to an GPIO so it can be disabled and will be disabled when powered off.
Or even use an NMOS.
I m... Maximilian Seesslen

14:38 Minutnik eInk Fehler #290 (Neu): Yellow and red LEDs are quite dark

This is only noticable with lighttramitters which blocks/diffuse some light.
Maximilian Seesslen

25.10.2022

11:03 Minutnik eInk Fehler #288 (Erledigt): Device No.2 freezes when connected to USB

Device No.1 can not reproduce this.
Maybe Brownout-detection fails. Check other groups.
OB_BOR_LEVEL3: Supp... Maximilian Seesslen

06.10.2022

10:49 Minutnik eInk Fehler #268: USB-LED missing

This can be done via heartbeat LED.
Having the LDO-LED as generic "on"-LED on GPIO makes sense to visualise crashed ... Maximilian Seesslen

10:44 Minutnik eInk Fehler #266 (Erledigt): Dont use JTAG-RESET as LED

Disabling debigging in standby does the trick. Maximilian Seesslen

10:43 Minutnik eInk Fehler #267 (Erledigt): Multiple Wakeup-pins are not working

Workaround works.
As described in the stm32 errata, the device can not be powered off when usb is connected (WKUP2 s... Maximilian Seesslen

10:38 Minutnik eInk Fehler #272 (Abgewiesen): PIN Standby verification

Just disable debug in standby mode.
Maximilian Seesslen

10:20 Minutnik eInk Fehler #272: PIN Standby verification

Just disable debug in standby mode.
According to "reference manual":https://www.st.com/resource/en/reference_manual/... Maximilian Seesslen

05.10.2022

11:56 Minutnik eInk Fehler #272 (Abgewiesen): PIN Standby verification

E.g. the NJRST is internally connected to an pullup when in standby.
When an LED is connected it can be seen.
If su... Maximilian Seesslen

11:43 Minutnik eInk Fehler #271 (Neu): consumption tests completely missing

No tests have been berfomed yet.
* Setup a further PCB (v0.1.x), only for measurements
* measure current on stand... Maximilian Seesslen

11:20 Minutnik eInk Feature #269 (Erledigt): add RTC Crystal

An alarm-function would be really nice and a killer-feature towards miniminutnik.
The alarm could even be displayed ... Maximilian Seesslen

11:17 Minutnik eInk Fehler #268 (Erledigt): USB-LED missing

It only shows "charge"-LED
Not really usefull. But the LDO-LED could be replaced.
Usefull to indicate the mode; con... Maximilian Seesslen

10:12 Minutnik eInk Fehler #267 (Erledigt): Multiple Wakeup-pins are not working

"Errata1":https://www.st.com/resource/en/errata_sheet/es0125-stm32l151x68b-and-stm32l152x68b-device-errata-stmicroe... Maximilian Seesslen

10:07 Minutnik eInk Fehler #266 (Erledigt): Dont use JTAG-RESET as LED

The JTAG-RESET has an weak permanent pullup. So the connected LED glows in standby causing battery discharge when dev... Maximilian Seesslen

10:04 Minutnik eInk Fehler #265 (Erledigt): Pulldown on USB-Detect is missing

USB-Detect-Input is floating when USB is not connected.
Internal Pulldown has to be used for Wakeups.
Maximilian Seesslen

10:03 Minutnik eInk Fehler #264 (Erledigt): USB is not working

* Crystal is missing
* Is reconfiguration of the Sysclock-configuration working? Only use HSE when USB connection is... Maximilian Seesslen