#include
//------------------------------------------------------------
// Use PIC16F887 chip to output 50k Hz square wave with 50% duty cycle
//------------------------------------------------------------
//系统配置
//__CONFIG(HS&PWRTEN&BOREN&PROTECT&WDTDIS);
__CONFIG(INTIO & WDTDIS & PWRTEN & MCLRDIS & UNPROTECT & BORDIS & LVPDIS & IESODIS & FCMDIS);
//-------------中断服务程序------------------------------------
void interrupt isr()
{
if(TMR2IE==1&&TMR2IF==1)
{TMR2IF=0;
}
}
void SpwmInit()
{
OSCCON=0x7f;//using inner 8M osc
TRISC1=1;
TRISC2=1;
//TRISD = 0;
PR2=0x27;
CCP1CON=0x0f|0x00;
CCPR1L=0x14;
TMR2IF=0;
T2CON=0;
GIE=0;
TMR2IE=1;
PEIE=1;
TMR2ON=1;
}
main()
{ SpwmInit();
TRISC1=0;
TRISC2=0;
while(1)
{;}
}
Previous article：Implementing PIC16F5X asynchronous serial port with software
Next article：Key points and description of PIC24F EEPROM read and write interrupt event processing function
- Popular Resources
- Popular amplifiers
ADCMP564BRQZ
- Download from the Internet--ARM Getting Started NotesA brief introduction: From today on, the ARM notebook of the rookie is open, and it can be regarded as a place to store these notes. Why publish it? Maybe you are interested in it. In fact, the reason for these notes is ...
- Learn ARM development(22)Turning off and on interrupts Interrupts are an efficient dialogue mechanism, but sometimes you don't want to interrupt the program while it is running. For example, when you are printing something, the program suddenly interrupts and another ...
- Learn ARM development(21)First, declare the task pointer, because it will be used later. Task pointer volatile TASK_TCB* volatile g_pCurrentTask = NULL;volatile TASK_TCB* vol ...
- Learn ARM development(20)With the previous Tick interrupt, the basic task switching conditions are ready. However, this "easterly" is also difficult to understand. Only through continuous practice can we understand it. ...
- Learn ARM development(19)After many days of hard work, I finally got the interrupt working. But in order to allow RTOS to use timer interrupts, what kind of interrupts can be implemented in S3C44B0? There are two methods in S3C44B0. ...
- Learn ARM development(14)
- Learn ARM development(15)
- Learn ARM development(16)
- Learn ARM development(17)
Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.
- LED chemical incompatibility test to see which chemicals LEDs can be used with
- Application of ARM9 hardware coprocessor on WinCE embedded motherboard
- What are the key points for selecting rotor flowmeter?
- LM317 high power charger circuit
- A brief analysis of Embest's application and development of embedded medical devices
- Single-phase RC protection circuit
- stm32 PVD programmable voltage monitor
- Introduction and measurement of edge trigger and level trigger of 51 single chip microcomputer
- Improved design of Linux system software shell protection technology
- What to do if the ABB robot protection device stops
- Huawei's Strategic Department Director Gai Gang: The cumulative installed base of open source Euler operating system exceeds 10 million sets
- Download from the Internet--ARM Getting Started Notes
- Learn ARM development(22)
- Learn ARM development(21)
- Learn ARM development(20)
- Learn ARM development(19)
- Learn ARM development(14)
- Learn ARM development(15)
- Analysis of the application of several common contact parts in high-voltage connectors of new energy vehicles
- Wiring harness durability test and contact voltage drop test method
- TMS320F28335 IO Control Timing Operation
- What is red light plus green light?
- How to choose operating system for RK3399
- MYC-CZU3EG core board information
- Analyzing the temperature sensor sampling circuit
- STEVAL-IDB008V2 board connected to BlueNRG Navigator cannot download firmware
- 【DFRobot motor driver】+Received DFRobot Arduino driver board
- ART-Pi evaluates the GUI design framework in VNC mode,
- About the Common Program Framework of MSP430 MCU
- About Freescale programming environment KDS3.0 software issues
京公网安备 11010802033920号