当前位置:首页 > 单片机 > 单片机
[导读]  In my previous blog "PIC32MZ tutorial -- Output Compare", I shows how to apply Output Compare without interrupt to generate PWM signal. I also tried the Output Compare interrupt. I selected OC to

  In my previous blog "PIC32MZ tutorial -- Output Compare", I shows how to apply Output Compare without interrupt to generate PWM signal. I also tried the Output Compare interrupt. I selected OC to be PWM mode without fault pin (OCM = "110") and enable its interrupt. Below is the initialization of OC.


void OC1_Init(void)

{

OC1CON = 0x0000;

//RPD1/RD1 -> OC1

RPD1R = 0xC;

IPC1SET = 0x1E000000;

IFS0CLR = 0x80;

IEC0SET = 0x80;

OC1RS = OC_MIN;

OC1R = OC_MIN;

OC1CON = 0x2E;

OC1CONSET = 0x8000; // Enable OC

}


  But the application run not properly. The symptom was the OC interrupt never happened ( I set a breakpoint in the OC interrupt service routine, never saw the application entry this interrupt service routine). I raised a support ticket for this issue to Microchip. And the fleedback was that PWM mode without fault pin would not generate interrupt. So I decided change the PWM mode to Continuous Pulses mode (OCM = "101") and enabled interrupt then retried. This time the whole application is like below, it runs very well.


#include

#include

#pragma config FMIIEN = ON // Ethernet RMII/MII Enable (MII Enabled) // need a 25MHz XTAL in MII mode, a 50MHz Clock in RMII mode.

#pragma config FETHIO = ON // Ethernet I/O Pin Select (Default Ethernet I/O)

#pragma config PGL1WAY = ON // Permission Group Lock One Way Configuration (Allow only one reconfiguration)

#pragma config PMDL1WAY = ON // Peripheral Module Disable Configuration (Allow only one reconfiguration)

#pragma config IOL1WAY = ON // Peripheral Pin Select Configuration (Allow only one reconfiguration)

#pragma config FUSBIDIO = OFF // USB USBID Selection (Controlled by Port Function)

// DEVCFG2  7FF9B11A

#pragma config FPLLIDIV = DIV_3 // System PLL Input Divider (3x Divider)

#pragma config FPLLRNG = RANGE_5_10_MHZ // System PLL Input Range (5-10 MHz Input)

#pragma config FPLLICLK = PLL_POSC // System PLL Input Clock Selection (POSC is input to the System PLL)

#pragma config FPLLMULT = MUL_50 // System PLL Multiplier (PLL Multiply by 50) //PLL must output between 350 and 700 MHz

#pragma config FPLLODIV = DIV_2 // System PLL Output Clock Divider (2x Divider)

#pragma config UPLLFSEL = FREQ_24MHZ // USB PLL Input Frequency Selection (USB PLL input is 24 MHz)

#pragma config UPLLEN = OFF // USB PLL Enable (USB PLL is disabled)

// DEVCFG1  7F7F3839

#pragma config FNOSC = SPLL // Oscillator Selection Bits (System PLL)

#pragma config DMTINTV = WIN_127_128 // DMT Count Window Interval (Window/Interval value is 127/128 counter value)

#pragma config FSOSCEN = OFF // Secondary Oscillator Enable (Disable SOSC)

#pragma config IESO = OFF // Internal/External Switch Over (Disabled)

#pragma config POSCMOD = EC // Primary Oscillator Configuration (External clock mode)

#pragma config OSCIOFNC = ON // CLKO Output Signal Active on the OSCO Pin (Enabled)

#pragma config FCKSM = CSDCMD // Clock Switching and Monitor Selection (Clock Switch Disabled, FSCM Disabled)

#pragma config WDTPS = PS1048576 // Watchdog Timer Postscaler (1:1048576)

#pragma config WDTSPGM = STOP // Watchdog Timer Stop During Flash Programming (WDT stops during Flash programming)

#pragma config WINDIS = NORMAL // Watchdog Timer Window Mode (Watchdog Timer is in non-Window mode)

#pragma config FWDTEN = OFF // Watchdog Timer Enable (WDT Disabled)

#pragma config FWDTWINSZ = WINSZ_25 // Watchdog Timer Window Size (Window size is 25%)

#pragma config DMTCNT = DMT31 // Deadman Timer Count Selection (2^31 (2147483648))

#pragma config FDMTEN = OFF // Deadman Timer Enable (Deadman Timer is disabled)

// DEVCFG0  FFFFFFF7

#pragma config DEBUG = OFF // Background Debugger Enable (Debugger is disabled)

#pragma config JTAGEN = ON // JTAG Enable (JTAG Port Enabled)

#pragma config ICESEL = ICS_PGx2 // ICE/ICD Comm Channel Select (Communicate on PGEC2/PGED2)

#pragma config TRCEN = ON // Trace Enable (Trace features in the CPU are enabled)

#pragma config BOOTISA = MIPS32 // Boot ISA Selection (Boot code and Exception code is MIPS32)

#pragma config FECCCON = OFF_UNLOCKED // Dynamic Flash ECC Configuration (ECC and Dynamic ECC are disabled (ECCCON bits are writable))

#pragma config FSLEEP = OFF // Flash Sleep Mode (Flash is powered down when the device is in Sleep mode)

#pragma config DBGPER = ALLOW_PG2 // Debug Mode CPU Access Permission (Allow CPU access to Permission Group 2 permission regions)

#pragma config EJTAGBEN = NORMAL // EJTAG Boot (Normal EJTAG functionality)

// DEVCP0

#pragma config CP = OFF // Code Protect (Protection Disabled)


#define Mvec_Interrupt() INTCONSET = 0x1000; asm volatile("ei");


#define OC1_VALUE (PORTD & 0x2)

#define OC_MAX (0x7A120)

#define OC_MIN (0x0)

#define STEP_VALUE (500)


#define LED_IOCTL() TRISHCLR = (1<<0)

#define LED_SETON() LATHSET = (1<<0)

#define LED_SETOFF() LATHCLR = (1<<0)

#define LED_ONOFF() LATHINV = (1<<0)

#define LED_OPEN() ANSELH &= 0xFFFFFFFE


typedef enum _eRUN_MODE

{

Stable1,

Welcome,

Stable2,

Goodbye,

} eRUN_MODE;

eRUN_MODE LED_RunMode;


void OC1_Init(void)

{

OC1CON = 0x0000;

//RPD1/RD1 -> OC1

RPD1R = 0xC;

IPC1SET = 0x1E000000;

IFS0CLR = 0x80;

IEC0SET = 0x80;

OC1RS = OC_MIN;

OC1R = OC_MIN;

OC1CON = 0x2D;

OC1CONSET = 0x8000; // Enable OC

}

void LED_Init(void)

{

LED_SETOFF();

LED_OPEN();

LED_IOCTL();

LED_RunMode = Stable1;

}


void T23_Init(void)

{

T2CON = 0x0;

T3CON = 0x0;

TMR2 = 0;

TMR3 = 0;

//IPC3SET = 0x50000;

IPC3SET = 0x120000;

IEC0SET = 0x4000;

IFS0CLR = 0x4000;

PR2 = 0xA120;

PR3 = 0x7;


T2CON = 0x0008;

T2CON |= 0x8000;

}

void T45_Init(void)

{

T4CON = 0;

T5CON = 0;

TMR4 = 0;

TMR5 = 0;

IPC6SET = 0x6;

IFS0CLR = 0x1000000;

IEC0SET = 0x1000000;

PR4 = 0xE100;

PR5 = 0x05F5;

T4CON = 0x0008;

T4CON |= 0x8000;

}


void __ISR(_OUTPUT_COMPARE_1_VECTOR,ipl7AUTO) OC1_Handler(void)

{

IFS0CLR = 0x80;

LED_SETOFF();

if (LED_RunMode == Stable1)

{

; // do nothing

}

else if (LED_RunMode == Stable2)

{

; // do nothing

}

else if (LED_RunMode == Welcome)

{

OC1RS = OC1RS + STEP_VALUE;

if (OC1RS >= OC_MAX)

{

T4CON = 0x0008;

TMR4 = 0;

TMR5 = 0;

PR4 = 0xE100;

PR5 = 0x05F5;

T4CON = 0x8008;

IFS0CLR = 0x1000000;

LED_RunMode = Stable2;

}

}

else // LED_RunMode == Goodbye

{

OC1RS = OC1RS - STEP_VALUE;

if (OC1RS == OC_MIN)

{

T4CON = 0x0008;

TMR4 = 0;

TMR5 = 0;

PR4 = 0xE100;

PR5 = 0x05F5;

T4CON = 0x8008;

IFS0CLR = 0x1000000;

LED_RunMode = Stable1;

}

}

Nop();

}


void __ISR(_TIMER_3_VECTOR,ipl4AUTO) T23_Handler(void)

{

LED_SETON();

TMR2 = 0;

TMR3 = 0;

IFS0CLR = 0x4000;

Nop();

}

void __ISR(_TIMER_5_VECTOR,ipl1AUTO) T45_Handler(void)

{

if (LED_RunMode == Stable1)

{

LED_RunMode = Welcome;

//PR5 = 0x98;

PR4 = 0x9680;

PR5 = 0x98;

}

else if (LED_RunMode == Welcome)

{

; // do nothing

}

else if (LED_RunMode == Stable2)

{

LED_RunMode = Goodbye;

//PR5 = 0x98;

PR4 = 0x9680;

PR5 = 0x98;

}

else // LED_RunMode == Goodbye

{

; // do nothing

}

TMR4 = 0;

TMR5 = 0;

IFS0CLR = 0x1000000;

Nop();

}

void main(void)

{

LED_Init();

OC1_Init();

T23_Init();

T45_Init();

Mvec_Interrupt();

while(1)

{

LED_Scheduler();

}

}


本站声明: 本文章由作者或相关机构授权发布,目的在于传递更多信息,并不代表本站赞同其观点,本站亦不保证或承诺内容真实性等。需要转载请联系该专栏作者,如若文章内容侵犯您的权益,请及时联系本站删除。
换一批
延伸阅读

9月2日消息,不造车的华为或将催生出更大的独角兽公司,随着阿维塔和赛力斯的入局,华为引望愈发显得引人瞩目。

关键字: 阿维塔 塞力斯 华为

加利福尼亚州圣克拉拉县2024年8月30日 /美通社/ -- 数字化转型技术解决方案公司Trianz今天宣布,该公司与Amazon Web Services (AWS)签订了...

关键字: AWS AN BSP 数字化

伦敦2024年8月29日 /美通社/ -- 英国汽车技术公司SODA.Auto推出其旗舰产品SODA V,这是全球首款涵盖汽车工程师从创意到认证的所有需求的工具,可用于创建软件定义汽车。 SODA V工具的开发耗时1.5...

关键字: 汽车 人工智能 智能驱动 BSP

北京2024年8月28日 /美通社/ -- 越来越多用户希望企业业务能7×24不间断运行,同时企业却面临越来越多业务中断的风险,如企业系统复杂性的增加,频繁的功能更新和发布等。如何确保业务连续性,提升韧性,成...

关键字: 亚马逊 解密 控制平面 BSP

8月30日消息,据媒体报道,腾讯和网易近期正在缩减他们对日本游戏市场的投资。

关键字: 腾讯 编码器 CPU

8月28日消息,今天上午,2024中国国际大数据产业博览会开幕式在贵阳举行,华为董事、质量流程IT总裁陶景文发表了演讲。

关键字: 华为 12nm EDA 半导体

8月28日消息,在2024中国国际大数据产业博览会上,华为常务董事、华为云CEO张平安发表演讲称,数字世界的话语权最终是由生态的繁荣决定的。

关键字: 华为 12nm 手机 卫星通信

要点: 有效应对环境变化,经营业绩稳中有升 落实提质增效举措,毛利润率延续升势 战略布局成效显著,战新业务引领增长 以科技创新为引领,提升企业核心竞争力 坚持高质量发展策略,塑强核心竞争优势...

关键字: 通信 BSP 电信运营商 数字经济

北京2024年8月27日 /美通社/ -- 8月21日,由中央广播电视总台与中国电影电视技术学会联合牵头组建的NVI技术创新联盟在BIRTV2024超高清全产业链发展研讨会上宣布正式成立。 活动现场 NVI技术创新联...

关键字: VI 传输协议 音频 BSP

北京2024年8月27日 /美通社/ -- 在8月23日举办的2024年长三角生态绿色一体化发展示范区联合招商会上,软通动力信息技术(集团)股份有限公司(以下简称"软通动力")与长三角投资(上海)有限...

关键字: BSP 信息技术
关闭
关闭