Hugo Pristauz
Tutorial 2 - SOS: This is an embedded program which controls LED1 in order to show a blinking SOS pattern. The tutorial starts to organize helper functions like "morse" in a brick library which will grow and grow with each tutorial. Platform specifics are identified in "bricks/platform.h" by setting proper defines (like LED_INVERTED), which are used to achieve platform independent behaviour. The program has been tested on Nordic nRF51-DK and STM NUCLEO-F303K8, NUCLEO-F401RE and NUCLEO-L476RG.
Diff: Readme.md
- Revision:
- 1:10299215b49e
diff -r 9bbb539e0614 -r 10299215b49e Readme.md --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Readme.md Sat Dec 10 18:34:23 2016 +0000 @@ -0,0 +1,31 @@ +T02_SOS - Blinking LED according to Morse SOS pattern + +This demo program runs a repeated SOS morse pattern on LED1. +Helper function morse() is implemented as part of the bricks library (files +bricks/blink.cpp, bricks/blink.h and bricks/target.h. + +We need a special header target.h with platformtarget specific definitions. +For example on a NUCLEO board LED1 needs to be assigned with a value of 1 for ON +and 0 for OFF. On a nRF51 board it is exactly the oposite. + +In order to achieve opposite behavour the header target.h defines conditionally +the define LED_INVERTED (only if nRF51 platform board is selected), which is +processed in blink.cpp to proper definitions for LED_ON and LED_OFF. + +See blink.cpp: + +#ifndef LED_INVERTED +# define LED_ON 1 +# define LED_OFF 0 +#else +# define LED_ON 0 +# define LED_OFF 1 +#endif + +To make it running the libraries BLE_API and X_NUCLEO_IDB0XA1 have to be +updated (e.g. to be copied from a working NUCLEO BLE program). + +Tested Boards: + NUCLEO-L476RG, NUCLEO-F303K8, NUCLEO-F401RE + nRF51-DK + \ No newline at end of file