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VC288 Volt-amp meter alternative firware. Targets the cheap DSN-VC288 volt-amp meter and the STM8S003F MCU.

C 99.55% C++ 0.45%

mcu vc288 stm8s c

vc288-alt-fw's Introduction

vc288-alt-fw

VC288 Volt-amp meter alternative firmware. Targets the cheap DSN-VC288 volt-amp meter that uses the STM8S003F MCU.

How to compile

Install Visual Studio Code in your system.
Install the PlatformIO extension on Visual Studio Code.
Once these are installed, open the PlatformIO Home from the extension icon, and install the ST STM8 platform.
Open this repository, by either cloning it to a directory, or by unziping the zip archive.
Finally, build the code by navigating into the PlatformIO extension icon, and expanding the appropriate release build (for instance, stm8sblue_release). Select Build to build it; then Upload to upload the code to the chip using an STLinkV2.

For more info and other tools to upload it, please consult the PlatformIO info page for ST STM8.

Load the pre-built files

Since this project uses PlatformIO, a simple action can be added later to generate the .elf or .hex file for each pull request (or release) created for the ease of flashing a pre-compiled version.

Status

This is still not fully fledged as the original.

TODOs:

Linearize the ADC readings to get a precise value out of it.
Support the STM8S103F MCU (other variants of the same voltmeter).
... other stuff that will come out eventually.

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it-arzamas brunnels ksv-success suyog44 ezzzzzzzzzzzzzz alekc1975105 alexasf cnc4less demonic098 ozarchie devesh1995 passenger3e nateethon

vc288-alt-fw's Issues

Dynamic comma

если я правильно понял с запятой нужно работать здесь?

void set_segments(uint8_t data)
{
PA_ODR_ODR2 = data & 1; data >>= 1; // G
PC_ODR_ODR4 = data & 1; data >>= 1; // F
PC_ODR_ODR7 = data & 1; data >>= 1; // E
PC_ODR_ODR6 = data & 1; data >>= 1; // D
PC_ODR_ODR3 = data & 1; data >>= 1; // C
PA_ODR_ODR3 = data & 1; data >>= 1; // B
#ifndef SWIM_DEBUG_ENABLED
PD_ODR_ODR1 = data & 1; data >>= 1; // A (same pin of SWIM)
#else
data >>= 1;
#endif
PC_ODR_ODR5 = data & 1; data >>= 1; // Dp
}

void select_digit(uint8_t digit)
{
PD_ODR_ODR4 = digit != 0;
PD_ODR_ODR6 = digit != 1;
PD_ODR_ODR5 = digit != 2;

PB_ODR_ODR5 = digit != 3;
PB_ODR_ODR4 = digit != 4;
PA_ODR_ODR1 = digit != 5;

}

incorrect display of characters

Displays the letter A upside down and commas for 4 divisions 3 upper and one lower 2 more not lit at all... please help me. How to fix the normal display? to show everywhere 0 and commas only where necessary.

Alternative MCU ?

My vc288 board looks the same but MCU markings are totally scratched up. And i cannot write ROP Option Byte. Is it possible that i have different MCU?

How to calibrate

Please my friend tell me how to calibrate?, I connected 12 volts for measurement, it shows 319 volts and should show 12

Calibration

Привет всем. Столкнулся тоже с проблемой калибровки. Залил актуальную прошивку. Версия платы 1, при подаче питания 5в - показания 11,3
6в - 21,5
7в - 32.8
8в - 43,0
Резисторы перепроверил тестером и вроде соответствуют скетчу RV1,2 - 20k , R1-8k2 , R2-270k , R3-180k , R4-8k2
Подскажите правильное направление решения. Спасибо.
ENG
Hello everybody. I also ran into a calibration problem. Uploaded the current firmware. Board version 1, when the input power is 5V - display show 11.3
6v - 21.5
7v - 32.8
8v - 43.0
I checked the resistors with a tester and seem to correspond to the sketch RV1,2 - 20k, R1-8k2, R2-270k, R3-180k, R4-8k2
Prompt the right direction of the solution. Thank you.