Difference between revisions of "BakeBit - OLED 128x64"
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=== Hardware Setup === | === Hardware Setup === | ||
| − | Connect the OLED module to the NanoHat | + | Connect the OLED module to the NanoHat Hub's I2C interface: |
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import time | import time | ||
import bakebit | import bakebit | ||
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* Released English version | * Released English version | ||
| − | ===Jan-19- | + | ===Jan-19-2017=== |
* Renamed "NEO-Hub" to "NanoHat-Hub" | * Renamed "NEO-Hub" to "NanoHat-Hub" | ||
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| + | ===Jan-20-2017=== | ||
| + | * Renamed "NanoHat-Hub" to "NanoHat Hub" | ||
Latest revision as of 00:10, 2 May 2017
Contents
1 Introduction
- The BakeBit - OLED is a monochromatic OLED module. The OLED is 0.96" and its resoltuion is 128 x 64. Its interface is I2C.
- Users can set the I2C's address to either 0X3C or 0X3D and place two OLED modules on one I2C bus.
2 Hardware Spec
- Standard 2.0mm pitch 4-Pin BakeBit I2C Interface
- Resolution: 128 x 64
- Color: blue
- I2C's address configurable
- PCB dimension(mm): 24 x 42
- Pin Description:
| Pin | Description |
| GND | Ground |
| 5V | 5V Supply Voltage |
| SDA | I2C-SDA |
| SCL | I2C-SCL |
3 Code Sample(1): Display System Info
When you run this code sample the system’s information will be listed on the OLED.
3.1 Hardware Setup
Connect the OLED module to the NanoHat Hub's I2C interface:
3.2 Source Code
import time import bakebit import os import psutil from math import log import multiprocessing import platform import socket import bakebit_128_64_oled as oled oled.init() #initialze SEEED OLED display oled.clearDisplay() #clear the screen and set start position to top left corner oled.setNormalDisplay() #Set display to normal mode (i.e non-inverse mode) oled.setPageMode() #Set addressing mode to Page Mode byteunits = ('B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB') def filesizeformat(value): exponent = int(log(value, 1024)) return "%.1f %s" % (float(value) / pow(1024, exponent), byteunits[exponent]) memUsage = psutil.phymem_usage() diskUsage = psutil.disk_usage('/') oled.setTextXY(0,0) oled.putString("%s" % socket.gethostbyname(socket.gethostname())) oled.setTextXY(0,1) oled.putString("Mem:%s" % filesizeformat(memUsage.total)) oled.setTextXY(0,2) oled.putString("Usage:%d%%" % memUsage.percent) oled.setTextXY(0,3) oled.putString("Disk:%s" % filesizeformat(diskUsage.total)) oled.setTextXY(0,4) oled.putString("Usage:%d%%" % diskUsage.percent) oled.setTextXY(0,5) oled.putString("CPU:%s" % platform.processor()) oled.setTextXY(0,6) oled.putString("Cores:%d" % multiprocessing.cpu_count()) with open("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq") as f: freq = int(f.readlines()[0])/1000 freqStr = "%d MHz" % freq if freq > 1000: freqStr = "%.1f GHz" % (float(freq)/1000.0) oled.setTextXY(0,7) oled.putString("Freq:%s" % freqStr) oled.setTextXY(0,2) oled.putString("Usage:%d%%" % memUsage.percent) oled.setTextXY(0,3) oled.putString("Disk:%s" % filesizeformat(diskUsage.total)) oled.setTextXY(0,4) oled.putString("Usage:%d%%" % diskUsage.percent) oled.setTextXY(0,5) oled.putString("CPU:%s" % platform.processor()) oled.setTextXY(0,6) oled.putString("Cores:%d" % multiprocessing.cpu_count()) with open("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq") as f: freq = int(f.readlines()[0])/1000 freqStr = "%d MHz" % freq if freq > 1000: freqStr = "%.1f GHz" % (float(freq)/1000.0) oled.setTextXY(0,7) oled.putString("Freq:%s" % freqStr)
3.3 Run Code Sample
Before you run the code sample you need to follow the steps in bakebit tutorial to install the BakeBit package.
Enter the "BakeBit/Software/Python" directory and run the "bakebit_prj_SystemInfo.py" program:
cd ~/BakeBit/Software/Python sudo python bakebit_prj_SystemInfo.py
3.4 Observation
This is what users expect to observe:
4 Code Sample(2): UI Control via Joystick
A BakeBit - JoyStick module is needed in this test case. For more details about the joystick refer to the BakeBit - JoyStick page.
5 Resources
- [Schematic](BakeBit - OLED 128x64.pdf)
- [Datasheet](BakeBit - OLED 128x64 Datasheet.pdf)
- [BakeBit Github Project Page](https://github.com/friendlyarm/BakeBit)
- [BakeBit Starter Kit User's Manual](http://wiki.friendlyarm.com/bakebit/bakebit_starter_kit_manual_en.pdf)
6 Update Log
6.1 December-14-2016
- Released English version
6.2 Jan-19-2017
- Renamed "NEO-Hub" to "NanoHat-Hub"
6.3 Jan-20-2017
- Renamed "NanoHat-Hub" to "NanoHat Hub"
