24 lines
1.2 KiB
Markdown
24 lines
1.2 KiB
Markdown
# PicoCalc "southbridge" custom BIOS
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This is my personnal rewrite of the [original](https://github.com/clockworkpi/PicoCalc/tree/master/Code/picocalc_keyboard)
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PicoCalc STM32F103R8T6 firmware.
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## Features differences
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The main differences with the original firmware are the followings:
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- drastic reduction in the STM32's electricity consumption when running (~3.5 mA),
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- clean up (in progress) to reduce binary size (~25 KB) and allow more features to be implemented,
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- removed stm32duino dependencies (use STM32HAL instead, maybe I'll switch to libopencm3 someday...),
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- added configuration saving solution (using internal flash, including backlight option),
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- rewriten or added some debug UART interface message,
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- lighten AXP2101 PMIC driver.
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## Compile
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This source code can be compiled using ARM gcc toolchain (using v13) in path and using make program.
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## Credits
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- STM32-HAL: [link](https://github.com/STMicroelectronics/stm32f1xx-hal-driver)
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- STM32-CMSIS: [link](https://github.com/STMicroelectronics/cmsis-device-f1)
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- X-PowersLib: [link](https://github.com/lewisxhe/XPowersLib)
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- Emulated EEPROM: [link](https://github.com/ScorpionX5/STM32F1XX-EEPROM-Emulation-Library/tree/master/V2.0)
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