I want a program related to the msp430f5529 light or rain sensor.

fish001

I want a program related to the msp430f5529 light or rain sensor. [Copy link]

/*********************************************************** File name: iic.c Author: czhang Description: Subroutine of iic bus. Version: 1.0, October 11, 2003 **********************************************************************************************/ #include  
#include "BH1750.h" #include "iic.h" #include "general.h" /**************************************************************************** Initialize IIC ***************************************************************************/ void InitIIC() { IIC_DIR |= IIC_SCL; //SCL pin is output IIC_DIR &= ~IIC_SDA; //SDA pin is input C_SCL; Stop(); } /******************************************************************************* There is a short delay because the speed of MSP430 is relatively fast. The user can adjust the delay length according to the clock frequency********************************************************************/ void delay() { unsigned char q0; for(q0=0;q0<20;q0++) { _NOP(); } } /******************************************************************************* Start IIC bus***************************************************************************/ void Start() { SDA_OUT; S_SDA; delay(); S_SCL; delay(); C_SDA; delay(); C_SCL; delay(); } /******************************************************************************* Stop operation, release IIC bus***********************************************************************/ void Stop() { SDA_OUT; C_SCL; delay(); C_SDA; delay(); S_SCL; delay(); S_SDA; delay(); } /*************************************************************************** IIC bus response***********************************************************************/ void Ack() { SDA_OUT; C_SDA; delay(); S_SCL; delay(); C_SCL; delay(); S_SDA; } /******************************************************************************* IIC bus no response***************************************************************************/ void NoAck() { SDA_OUT; S_SDA; delay(); S_SCL; delay(); C_SCL; delay(); } /******************************************************************************* IIC bus test response return value: IIC response bit value 0: response 1: no response ******************************************************************************/ unsigned char TestAck() { unsigned char ack; S_SCL; delay(); SDA_IN; delay(); ack=READ_SDA; delay(); C_SCL; delay(); return(ack); } /*********************************************************************** IIC bus write 8-bit data input: 8-bit data to be written***********************************************************************/ void Write8Bit(unsigned int input) { unsigned char temp,q0; SDA_OUT; for(temp=8;temp!=0;temp--) { q0=input&0x80; if(q0==0x80) S_SDA; else C_SDA; delay(); S_SCL; delay(); C_SCL; delay(); input=input<<1; } } /******************************************************************************* IIC bus reads 8-bit data Return value: read 8-bit data **********************************************************************/ unsigned char Read8Bit() { unsigned char temp,q0,rbyte=0; SDA_IN; for(temp=8;temp!=0;temp--) { S_SCL; delay(); rbyte=rbyte<<1; SDA_IN; q0=READ_SDA; if(q0==IIC_SDA) rbyte=rbyte|0x1; delay(); C_SCL; delay(); } return(rbyte); } Have you used it before, feel it~?

littleshrimp

Isn't the light sensor just an ADC? Does it sample? Use a voltage divider resistor externally. If the rainwater is a capacitor type, you can look for a Zhangchi oscillation circuit made by TI using an MSP430 comparator to measure capacitance.

alan000345

What littleshrimp said is quite right, just do it as he said.

电容器

Just write it yourself.

Jacktang

There seems to be a problem with the IIC bus reading program

tiankai001

Is there something wrong with the program? Or do I not know how to use the light and rain sensors?