kopia lustrzana https://github.com/peterhinch/micropython-samples
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peterhinch | 8790817f4b | |
Peter Hinch | 745178a1cc |
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@ -23,7 +23,7 @@ Please also see the [official examples](https://github.com/micropython/micropyth
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2.1 [ESP32](./README.md#21-esp32) Pinout and notes on the reference board
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2.2 [SSD1306](./README.md#22-ssd1306) Write large fonts to the SSD1306.
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2.3 [Pyboard D](./README.md#23-pyboard-d) Some information remains absent or hard to find in the docs.
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2.4 [DS3231 precision RTC](./README.md#24-ds3231-precision-rtc) Use cheap hardware to calibrate Pyboard RTC.
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2.4 [DS3231 MAX31328 precision RTC](./README.md#24-ds3231-max31328-precision-rtc) Use cheap hardware to calibrate Pyboard RTC.
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3. [Essays](./README.md#3-essays) General thoughts.
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3.1 [Resilient](./README.md#31-resilient) A guide to writing resilient WiFi code
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3.2 [Serialisation](./README.md#32-serialisation) Review of MicroPython's five serialisation libraries
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@ -125,12 +125,15 @@ be found as part of [this repository](https://github.com/peterhinch/micropython-
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Assorted [information](./pyboard_d/README.md) not yet in the official docs or
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hard to find.
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## 2.4 DS3231 precision RTC
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## 2.4 DS3231 MAX31328 precision RTC
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This is a low cost precision battery backed real time clock (RTC) accurate to
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+-2 minutes/year. Two drivers are provided, one portable across platforms and
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one which is Pyboard specific.
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This driver also supports the MAX31328 which is a 100% compatible chip from the
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same manufacturer.
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The Pyboard-specific driver provides a facility to calibrate the Pyboard's RTC
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from the DS3231. Calibration to high precision may be achieved in five minutes.
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