| http://blog.pagefault-limited.co.uk/wemos-lolin32-pinout-vs-wemos-lolin32-lite-pinout |
2017-03-03 fm4dd
The gcc compiler can optimize code by taking advantage of CPU specific features. Especially for ARM CPU's, this can have impact on application performance. ARM CPU's, even under the same architecture, could be implemented with different versions of floating point units (FPU). Utilizing full FPU potential improves performance of heavier operating systems such as full Linux distributions.
These flags can both be used to set the CPU type. Setting one or the other is sufficient.
| /*******************Demo for MQ-2 Gas Sensor Module V1.0***************************** | |
| Support: Tiequan Shao: support[at]sandboxelectronics.com | |
| Lisence: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) | |
| Note: This piece of source code is supposed to be used as a demostration ONLY. More | |
| sophisticated calibration is required for industrial field application. | |
| Sandbox Electronics 2011-04-25 | |
| ************************************************************************************/ |
| /****************************************************************************** | |
| MCP4725 Example Waveform Sketch | |
| Joel Bartlett | |
| SparkFun Electronics | |
| Sept. 11, 2014 | |
| https://github.com/sparkfun/MCP4725_Breakout | |
| This sketch takes data from a lookup table to provide | |
| waveforms to be generated by the MCP4725 DAC. |
| /* | |
| Steps: | |
| 1. Edit pcmConfig.h | |
| a: On Uno or non-mega boards, #define buffSize 128. May need to increase. | |
| b: Uncomment #define ENABLE_RECORDING and #define BLOCK_COUNT 10000UL | |
| 2. Usage is as below. See https://github.com/TMRh20/TMRpcm/wiki/Advanced-Features#wiki-recording-audio for | |
| additional informaiton. | |
| */ |
| /* | |
| * ISD1820 Arduino Voice Recorder | |
| * to record and playback sound using Arduino and ISD1820 Sound Recorder | |
| * Watch the video https://youtu.be/IfK8z_o5vbk | |
| * get this code from http://robojax.com/learn/arduino/ | |
| /* | |
| * ISD1820 Arduino Voice Recorder |
| //============================================================================== | |
| // ModbusRTU.cpp | |
| //============================================================================== | |
| /*------------------------------------------------------------------------------- | |
| MODBUS RTU COMMUNICATION | |
| Description: | |
| Partial implementation of the Modbus RTU communication protocol. |
| /* | |
| * REUK.co.uk February 2016 | |
| * Displaying two 1 or 2dp values less than 100 on a TM1638 module. | |
| * | |
| * An excellent starter guide to the TM1638 modules is available here: | |
| * http://tronixstuff.com/2012/03/11/arduino-and-tm1638-led-display-modules/ | |
| */ | |
| // include the TM1638 library (which you must first install to your Arduino IDE). | |
| #include <TM1638.h> |
| /* | |
| Example of Skip List source code for C: | |
| Skip Lists are a probabilistic alternative to balanced trees, as | |
| described in the June 1990 issue of CACM and were invented by | |
| William Pugh in 1987. | |
| This file contains source code to implement a dictionary using | |
| skip lists and a test driver to test the routines. |