[参考译文] TMS320F28379D：从内核(CPU2)的 CPU 定时器0未被处理

您好、Sumit、

[引用 userid="502559" URL"~/support/microcontrollers/c2000-microcontrollers-group/c2000/f/C2000-microcontrollers-forume/1059228/tms320f28379d-cpu-timer-0-for-slave-core-cpu2-not getting-service 命令"]我看到它始终启动 TIMER0[并启用了全局报价函数0中断]

您能提供更多背景信息吗？ 主题行指出 CPU2上的计时器0不被处理、但您在这里表示为 TIMER0输入 ISR。 是否在您启动计时器后而不是在计时器计数完成后调用 ISR？

此致、

Marlyn

您好、Marlyn、

抱歉、我的主题行不正确。 是的、您答对了、ISR 会在计时器启动后立即调用。

此致、

Sumit Panse

您好、Sumit、

感谢您的澄清！ 您是否使用 driverlib 或位字段代码？

我修改了 C2000Ware 中的'IPC_ex1_GPIO_toggle'示例、以便在 CPU1/CPU2中同时启动 timer0。 每次计时器完成时应发生中断：C：\ti\c2000\C2000Ware_4_00_00\device_support\f2837xd\examples\dual\ipc_gpio_toggle

如果您使用的是位域、请尝试此操作吗？ 如果不是、请告诉我、我可以在 driverlib 中生成一些内容。

CPU1：

//
// Included Files
//
#include "F28x_Project.h"
#include "F2837xD_Ipc_drivers.h"

__interrupt void cpu_timer0_isr(void);
//
// Main
//
void main(void)
{
//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xD_SysCtrl.c file.
//
    InitSysCtrl();

#ifdef _STANDALONE
#ifdef _FLASH
    //
    // Send boot command to allow the CPU2 application to begin execution
    //
    IPCBootCPU2(C1C2_BROM_BOOTMODE_BOOT_FROM_FLASH);
#else
    //
    // Send boot command to allow the CPU2 application to begin execution
    //
    IPCBootCPU2(C1C2_BROM_BOOTMODE_BOOT_FROM_RAM);
#endif
#endif

//
// Clear all __interrupts and initialize PIE vector table:
//
   DINT;

//
// Initialize the PIE control registers to their default state.
// The default state is all PIE __interrupts disabled and flags
// are cleared.
// This function is found in the F2837xD_PieCtrl.c file.
//
   InitPieCtrl();

//
// Disable CPU __interrupts and clear all CPU __interrupt flags:
//
   IER = 0x0000;
   IFR = 0x0000;

//
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the __interrupt
// is not used in this example.  This is useful for debug purposes.
// The shell ISR routines are found in F2837xD_DefaultIsr.c.
// This function is found in F2837xD_PieVect.c.
//
   InitPieVectTable();

//
// Interrupts that are used in this example are re-mapped to
// ISR functions found within this file.
//
   EALLOW;  // This is needed to write to EALLOW protected registers
   PieVectTable.TIMER0_INT = &cpu_timer0_isr;
   EDIS;    // This is needed to disable write to EALLOW protected registers

//
// Initialize the Device Peripheral. This function can be
//         found in F2837xD_CpuTimers.c
//
   InitCpuTimers();   // For this example, only initialize the Cpu Timers

//
// Configure CPU-Timer 0 to __interrupt every 500 milliseconds:
// 60MHz CPU Freq, 50 millisecond Period (in uSeconds)
//
   ConfigCpuTimer(&CpuTimer0, 60, 500000);

//
// To ensure precise timing, use write-only instructions to write to the entire
// register. Therefore, if any of the configuration bits are changed in
// ConfigCpuTimer and InitCpuTimers (in F2837xD_cputimervars.h), the below
// settings must also be updated.
//
   //CpuTimer0Regs.TCR.all = 0x4001;

//
// Enable CPU INT1 which is connected to CPU-Timer 0:
//
   IER |= M_INT1;

//
// Enable TINT0 in the PIE: Group 1 __interrupt 7
//
   PieCtrlRegs.PIEIER1.bit.INTx7 = 1;

//
// Enable global Interrupts and higher priority real-time debug events:
//
   EINT;   // Enable Global __interrupt INTM
   ERTM;   // Enable Global realtime __interrupt DBGM

   while (IpcRegs.IPCSTS.bit.IPC17 == 0);
   IpcRegs.IPCACK.bit.IPC17 = 1;
   CpuTimer0Regs.TCR.bit.TSS   = 0;

//
// Step 6. IDLE loop. Just sit and loop forever (optional):
//
   for(;;);
}

//
// cpu_timer0_isr - CPU Timer0 ISR that toggles GPIO32 once per 500ms
//
__interrupt void cpu_timer0_isr(void)
{
   CpuTimer0.InterruptCount++;

   //
   // Acknowledge this __interrupt to receive more __interrupts from group 1
   //
   PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
}

//
// End of file
//

CPU2：

//
// Included Files
//
#include "F28x_Project.h"
#include "F2837xD_Ipc_drivers.h"

__interrupt void cpu_timer0_isr(void);

//
// Main
//
void main(void)
{
//
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xD_SysCtrl.c file.
//
   // InitSysCtrl();


    //
    // Clear all __interrupts and initialize PIE vector table:
    //
       DINT;

    //
    // Initialize the PIE control registers to their default state.
    // The default state is all PIE __interrupts disabled and flags
    // are cleared.
    // This function is found in the F2837xD_PieCtrl.c file.
    //
       InitPieCtrl();

    //
    // Disable CPU __interrupts and clear all CPU __interrupt flags:
    //
       IER = 0x0000;
       IFR = 0x0000;

    //
    // Initialize the PIE vector table with pointers to the shell Interrupt
    // Service Routines (ISR).
    // This will populate the entire table, even if the __interrupt
    // is not used in this example.  This is useful for debug purposes.
    // The shell ISR routines are found in F2837xD_DefaultIsr.c.
    // This function is found in F2837xD_PieVect.c.
    //
       InitPieVectTable();

    //
    // Interrupts that are used in this example are re-mapped to
    // ISR functions found within this file.
    //
       EALLOW;  // This is needed to write to EALLOW protected registers
       PieVectTable.TIMER0_INT = &cpu_timer0_isr;
       EDIS;    // This is needed to disable write to EALLOW protected registers

    //
    // Initialize the Device Peripheral. This function can be
    //         found in F2837xD_CpuTimers.c
    //
       InitCpuTimers();   // For this example, only initialize the Cpu Timers

    //
    // Configure CPU-Timer 0 to __interrupt every 500 milliseconds:
    // 60MHz CPU Freq, 50 millisecond Period (in uSeconds)
    //
       ConfigCpuTimer(&CpuTimer0, 60, 500000);

    //
    // To ensure precise timing, use write-only instructions to write to the entire
    // register. Therefore, if any of the configuration bits are changed in
    // ConfigCpuTimer and InitCpuTimers (in F2837xD_cputimervars.h), the below
    // settings must also be updated.
    //
       //CpuTimer0Regs.TCR.all = 0x4001;

    //
    // Enable CPU INT1 which is connected to CPU-Timer 0:
    //
       IER |= M_INT1;

    //
    // Enable TINT0 in the PIE: Group 1 __interrupt 7
    //
       PieCtrlRegs.PIEIER1.bit.INTx7 = 1;

    //
    // Enable global Interrupts and higher priority real-time debug events:
    //
       EINT;   // Enable Global __interrupt INTM
       ERTM;   // Enable Global realtime __interrupt DBGM

    IpcRegs.IPCSET.bit.IPC17    = 1;
    CpuTimer0Regs.TCR.bit.TSS   = 0;
    //
    // Step 6. IDLE loop. Just sit and loop forever (optional):
    //
       for(;;);
    }

    //
    // cpu_timer0_isr - CPU Timer0 ISR that toggles GPIO32 once per 500ms
    //
    __interrupt void cpu_timer0_isr(void)
    {
       CpuTimer0.InterruptCount++;

       //
       // Acknowledge this __interrupt to receive more __interrupts from group 1
       //
       PieCtrlRegs.PIEACK.all = PIEACK_GROUP1;
    }

此致、

Marlyn