dengfeng li / Mbed 2 deprecated dac_subsystem

dac subsystem

Dependencies:   mbed MCP4725

DAC/DAC.h@1:8056d0c97ee2, 2014-04-01 (annotated)

Committer:
dzl5187
Date:
Tue Apr 01 04:47:27 2014 +0000
Revision:
1:8056d0c97ee2
Parent:
0:c7adfe979a5b 
first commit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dzl5187 0:c7adfe979a5b 1
dzl5187 0:c7adfe979a5b 2 #ifndef DAC_H
dzl5187 0:c7adfe979a5b 3 #define DAC_H
dzl5187 0:c7adfe979a5b 4
dzl5187 0:c7adfe979a5b 5 #include "mbed.h"
dzl5187 0:c7adfe979a5b 6 #include "mcp4725.h"
dzl5187 0:c7adfe979a5b 7
dzl5187 0:c7adfe979a5b 8 //pins for connection
dzl5187 0:c7adfe979a5b 9 #define PIN_SDA p9
dzl5187 0:c7adfe979a5b 10 #define PIN_SCL p10
dzl5187 0:c7adfe979a5b 11 #define DEVICE_ADDR_BIT 0
dzl5187 0:c7adfe979a5b 12 //ref voltage
dzl5187 0:c7adfe979a5b 13 #define VDD_VOLTAGE 5.04
dzl5187 0:c7adfe979a5b 14
dzl5187 0:c7adfe979a5b 15 enum FREQ { FREQ_10HZ, FREQ_1HZ};
dzl5187 0:c7adfe979a5b 16 enum FORM { FORM_SQUARE, FORM_SIN};
dzl5187 0:c7adfe979a5b 17
dzl5187 0:c7adfe979a5b 18 /**
dzl5187 0:c7adfe979a5b 19 Funciton: DAC_start
dzl5187 0:c7adfe979a5b 20 Description: start generating the analog signal
dzl5187 0:c7adfe979a5b 21 */
dzl5187 0:c7adfe979a5b 22 void DAC_start();
dzl5187 0:c7adfe979a5b 23 /**
dzl5187 0:c7adfe979a5b 24 Funciton: DAC_stop
dzl5187 0:c7adfe979a5b 25 Description: stop generating the analog signal
dzl5187 0:c7adfe979a5b 26 */
dzl5187 0:c7adfe979a5b 27 void DAC_stop();
dzl5187 0:c7adfe979a5b 28 /**
dzl5187 0:c7adfe979a5b 29 Funciton: DAC_generate
dzl5187 0:c7adfe979a5b 30 Description: calculate the Vout accoding to the configuration and send command to DAC chip
dzl5187 0:c7adfe979a5b 31 */
dzl5187 0:c7adfe979a5b 32 void DAC_generate();
dzl5187 0:c7adfe979a5b 33 /**
dzl5187 0:c7adfe979a5b 34 Funciton: DAC_set
dzl5187 0:c7adfe979a5b 35 Description: set the configuration( amplitude, frequency and form of the signal)
dzl5187 0:c7adfe979a5b 36 */
dzl5187 0:c7adfe979a5b 37 void DAC_set(float range, enum FREQ freq, enum FORM form);
dzl5187 0:c7adfe979a5b 38
dzl5187 0:c7adfe979a5b 39 #endif