FRA221_2017 / Mbed 2 deprecated MCP4922_Sinewave

สัญญาณ sine

Dependencies:   mbed

Fork of MCP4922_Sinewave by FRA221_2016

main.cpp@4:bf75b2a7d8b5, 2015-11-05 (annotated)

Committer:
PKnevermind
Date:
Thu Nov 05 08:06:13 2015 +0000
Revision:
4:bf75b2a7d8b5
Parent:
3:863a9b7d417a 
...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
soulx 2:2244c8986987 1
jf1vrr 0:5737b1972549 2 #include "mbed.h"
jf1vrr 0:5737b1972549 3 #include "MCP4922.h"
jf1vrr 0:5737b1972549 4
soulx 2:2244c8986987 5 MCP4922 MCP(SPI_MOSI, SPI_SCK,SPI_CS); // MOSI, SCLK, CS
jf1vrr 0:5737b1972549 6
jf1vrr 0:5737b1972549 7
jf1vrr 0:5737b1972549 8 /**** Main Function ***/
soulx 2:2244c8986987 9 int main(void)
soulx 2:2244c8986987 10 {
PKnevermind 4:bf75b2a7d8b5 11 MCP.frequency(10000000);
PKnevermind 4:bf75b2a7d8b5 12
PKnevermind 4:bf75b2a7d8b5 13 uint16_t i=0;
PKnevermind 4:bf75b2a7d8b5 14 uint8_t state=0;
soulx 2:2244c8986987 15 while(1) {
PKnevermind 4:bf75b2a7d8b5 16 if(i < 0x0FFF)
PKnevermind 4:bf75b2a7d8b5 17 {
PKnevermind 4:bf75b2a7d8b5 18 i++;
PKnevermind 4:bf75b2a7d8b5 19
PKnevermind 4:bf75b2a7d8b5 20 }
PKnevermind 4:bf75b2a7d8b5 21 else
PKnevermind 4:bf75b2a7d8b5 22 {
PKnevermind 4:bf75b2a7d8b5 23 i=0;
PKnevermind 4:bf75b2a7d8b5 24 state = ~state;
PKnevermind 4:bf75b2a7d8b5 25 }
PKnevermind 4:bf75b2a7d8b5 26
PKnevermind 4:bf75b2a7d8b5 27 if(state ==0)
PKnevermind 4:bf75b2a7d8b5 28 {
PKnevermind 4:bf75b2a7d8b5 29 MCP.writeA(i);
PKnevermind 4:bf75b2a7d8b5 30 }
PKnevermind 4:bf75b2a7d8b5 31 else{
PKnevermind 4:bf75b2a7d8b5 32 MCP.writeA( ((~i)+1)&0x0FFF);
PKnevermind 4:bf75b2a7d8b5 33 }
PKnevermind 4:bf75b2a7d8b5 34 wait_us(20);
soulx 2:2244c8986987 35 }
jf1vrr 0:5737b1972549 36 }