Luis Silvio Cordova Rivadeneira / Mbed 2 deprecated Max7219_7LED_example

Ejemplo para ver com,unicacion SPI simple

Dependencies:   mbed Max7219

Ejemplo de blog en repositorio

https://os.mbed.com/media/uploads/lscordovar/whatsapp_image_2020-02-05_at_16.43.29.jpeg

ejemplo de imagen subida

main.cpp@1:81db1068fe7d, 2020-02-05 (annotated)

Committer:
lscordovar
Date:
Wed Feb 05 21:58:22 2020 +0000
Revision:
1:81db1068fe7d
Parent:
0:d50f30be8280 
ejemplo de SPI; 7 segmentos

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hotchpotch 0:d50f30be8280 1 #include "mbed.h"
hotchpotch 0:d50f30be8280 2 #include "Max7219.hpp"
hotchpotch 0:d50f30be8280 3
hotchpotch 0:d50f30be8280 4 int main() {
lscordovar 1:81db1068fe7d 5 SPI spi(PB_5 /* MOSI */, PB_4, PB_3 /* SCK */);
lscordovar 1:81db1068fe7d 6 MAX7219 max7219(spi, PD_7 /* CS */);
hotchpotch 0:d50f30be8280 7 max7219.begin();
hotchpotch 0:d50f30be8280 8 max7219.print("-1234.567");
hotchpotch 0:d50f30be8280 9
hotchpotch 0:d50f30be8280 10 wait(5);
hotchpotch 0:d50f30be8280 11 double counter = 0.0f;
hotchpotch 0:d50f30be8280 12 char num_str[10];
hotchpotch 0:d50f30be8280 13
hotchpotch 0:d50f30be8280 14 while(1) {
hotchpotch 0:d50f30be8280 15 counter += 0.01;
hotchpotch 0:d50f30be8280 16 sprintf(num_str, "%9.2f", counter);
hotchpotch 0:d50f30be8280 17 max7219.print(num_str);
hotchpotch 0:d50f30be8280 18 }
hotchpotch 0:d50f30be8280 19 }