| /** | |
| * Copy <cs_Math> from bluenet repository and if not present add to it the following function. | |
| template<class T, class M, class U=int> | |
| constexpr inline decltype(auto) DecreaseMember(T& obj, M member, U diff=1) { | |
| obj.*member = SafeAdd(obj.*member, -diff); | |
| return obj.*member; | |
| } | |
| * Compile with g++ -I. main.cpp -o main |
Check the Sphinx documentation, heavily used within Python. This is a reStructedText doc: https://www.sphinx-doc.org/en/master/usage/restructuredtext/domains.html#python-signatures
.. py:function:: send_message(sender, recipient, message_body, [priority=1])
Send a message to a recipient
:param str sender: The person sending the message
| #!/usr/bin/env Rscript | |
| args = commandArgs(trailingOnly=TRUE) | |
| # Make sure the data is properly formatted. | |
| # It should be separated by tabs. It should start with non-white space. | |
| # It should have two columns: x, y. | |
| separator <- '\t' | |
| library(ggplot2) |
| Command line | |
| Force argument: interface=${1:? "usage"} | |
| Resize gnome-terminal: resize -s 50 140 | |
| Find file with wildcard: find . -name 'test*' | |
| Untar --extract --file: tar xf archive.x.y.z -C directory | |
| Unzip to directory: unzip archive.zip -d directory | |
| Zip directory: zip archive.zip -r directory | |
| Inline sed: sed -i '/Term/s/^/#/' | |
| Process substitution: meld <(xxd file1) <(xxd file2) <(xxd file3) | |
| Make Android screenshot: adb shell screencap -p | dos2unix > screen.png |
| #include <iostream> | |
| #include <iomanip> | |
| uint16_t crcTable[65536]; | |
| #define WIDTH (8 * sizeof(uint16_t)) | |
| #define TOPBIT (1 << (WIDTH - 1)) | |
| // Checked with https://www.lammertbies.nl/comm/info/crc-calculation | |
| // It is CRC-CCITT (XModem) |
| #include <iostream> | |
| #include <iomanip> | |
| uint16_t crcTable[256]; | |
| #define WIDTH (8 * sizeof(uint16_t)) | |
| #define TOPBIT (1 << (WIDTH - 1)) | |
| // Checked with https://www.lammertbies.nl/comm/info/crc-calculation | |
| // It is CRC-CCITT (XModem) |
The Crownstone dimming uses a trick to make sure the IGBTs are not turned on partly when the voltage at the input of the gate driver is not yet up to around 15V.
How this is done is to place a 8V2 Zener back-to-back with the 15V Zener to be able to generate a negative 8.2V (give or take a diode offset of 0.7V). Subsequently, there is a voltage divider R2, R4 which divides this by two. The voltage of around -4V is fed into a depletion mode n-mosfet. The latter will be conducting till its negative threshold has been reached (-2.8V typical). If this has been reached it will be off. At the moments before that it will regularly conduct and short the output of the IGBT driver.
| #include <stdio.h> | |
| #include <stdlib.h> | |
| #define N 16 | |
| __global__ void insertionsort(int n, const float *values, int *indices) { | |
| int key_i, j; | |
| for (int i = blockIdx.x; i < n; i += gridDim.x) { | |
| key_i = indices[i]; | |
| j = i - 1; |