MCP3425 sample
Dependencies: AQM0802 MCP3425 mbed
See http://developer.mbed.org/users/yasuyuki/notebook/MCP3425/
Diff: main.cpp
- Revision:
- 0:5999cefe7380
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Wed Oct 15 14:40:22 2014 +0000 @@ -0,0 +1,61 @@ +//********************** +// A/D Converter +// MCP3425 sample for mbed +// +// Voltage=(Vin+)-(Vin-) +// Voltage Range:-2.048V to 2.048V +// Resolution:2.048V/0x7FFF=62.5uV, 16bits +// Sampling Per Second +// 240 SPS, 12bits +// 60 SPS, 14bits +// 15 SPS, 16bits (default) +// +// (C)Copyright 2014 All rights reserved by Y.Onodera +// http://einstlab.web.fc2.com +//********************** +#include "mbed.h" +#include "AQM0802.h" +#include "MCP3425.h" + +#if defined(TARGET_LPC1768) +I2C i2c(p28,p27); +#endif +// for TG-LPC11U35-501 +#if defined(TARGET_LPC11U35_501) +I2C i2c(P0_5,P0_4); +#endif +// for Nucleo +#if defined(TARGET_NUCLEO_F401RE) +I2C i2c(D14,D15); +#endif + +AQM0802 lcd(i2c); +MCP3425 mcp3425(i2c); + + +int main() { + + char msg[10]; + short a; + float v; + + sprintf(msg,"MCP3425"); + lcd.locate(0,0); + lcd.print(msg); + wait(1); + + while(1) { + + a = mcp3425.get(); + sprintf(msg,"dat=%X",(unsigned short)a); + lcd.locate(0,0); + lcd.print(msg); + v = (float)a*2.048/0x7FFF; + sprintf(msg,"%f",v); + lcd.locate(0,1); + lcd.print(msg); + wait(1); // Do not exceed 15SPS with 16bits + } + +} +